Form 10-Q - Quarterly report [Sections 13 or 15(d)]

Share Name	Share Symbol	Market	Type
Charles River Laboratories International Inc	NYSE:CRL	NYSE	Common Stock

	Price Change	% Change	Share Price	High Price	Low Price	Open Price	Shares Traded	Last Trade
	-0.49	-0.26%	186.16	188.3176	184.76	185.67	514,777	01:00:00

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549


FORM 10-Q
(Mark One)
☑			QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

FOR THE QUARTERLY PERIOD ENDED June 29, 2024


OR
☐			TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934
FOR THE TRANSITION PERIOD FROM TO

Commission File No. 001-15943

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

(Exact Name of Registrant as Specified in Its Charter)

Delaware

06-1397316

(State or Other Jurisdiction of
Incorporation or Organization)

(I.R.S. Employer
Identification No.)

251 Ballardvale Street

Wilmington, Massachusetts 01887

(Address of Principal Executive Offices) (Zip Code)

(Registrant’s telephone number, including area code): (781) 222-6000


Securities registered pursuant to Section 12(b) of the Act:
Title of each class	Ticker symbol(s)	Name of each exchange on which registered
Common stock, $0.01 par value	CRL	New York Stock Exchange

Indicate by check mark whether the Registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the Registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes ☑ No ☐

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Yes ☑ No ☐

Indicate by check mark whether the Registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.


Large accelerated filer	☑	Accelerated filer	☐
Non-accelerated filer	☐	Smaller reporting company	☐
		Emerging growth company	☐

If an emerging growth company, indicate by a check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act). Yes ☐ No ☑

As of July 27, 2024, there were 51,630,726 shares of the Registrant’s common stock outstanding.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

QUARTERLY REPORT ON FORM 10-Q

FOR THE QUARTERLY PERIOD ENDED JUNE 29, 2024

TABLE OF CONTENTS


Item		Page
PART I - FINANCIAL INFORMATION
1	Financial Statements
	Condensed Consolidated Statements of Income (Unaudited) for the three and six months ended June 29, 2024 and July 1, 2023	3
	Condensed Consolidated Statements of Comprehensive Income (Unaudited) for the three and six months ended June 29, 2024 and July 1, 2023	4
	Condensed Consolidated Balance Sheets (Unaudited) as of June 29, 2024 and December 30, 2023	5
	Condensed Consolidated Statements of Cash Flows (Unaudited) for the six months ended June 29, 2024 and July 1, 2023	6
	Condensed Consolidated Statements of Changes in Equity and Redeemable Noncontrolling Interests (Unaudited) for the three and six months ended June 29, 2024 and July 1, 2023	7
	Notes to Unaudited Condensed Consolidated Financial Statements	9
2	Management’s Discussion and Analysis of Financial Condition and Results of Operations	27
	Overview	27
	Results of Operations	29
	Liquidity and Capital Resources	35
	Critical Accounting Policies and Estimates	38
	Recent Accounting Pronouncements	38
3	Quantitative and Qualitative Disclosure About Market Risk	38
4	Controls and Procedures	38
PART II - OTHER INFORMATION
1	Legal Proceedings	39
1A	Risk Factors	40
2	Unregistered Sales of Equity Securities and Use of Proceeds	40
5	Other Information	40
6	Exhibits	41

Signatures		42

Special Note on Factors Affecting Future Results

This Quarterly Report on Form 10-Q contains forward-looking statements regarding future events and the future results of Charles River Laboratories International, Inc. that are based on our current expectations, estimates, forecasts and projections about the industries in which we operate and the beliefs and assumptions of our management. Words such as “expect,” “anticipate,” “target,” “goal,” “project,” “intend,” “plan,” “believe,” “seek,” “estimate,” “will,” “likely,” “may,” “designed,” “would,” “future,” “can,” “could,” and other similar expressions which are predictions of, indicate future events and trends or which do not relate to historical matters, are intended to identify such forward-looking statements. These statements are based on our current expectations and beliefs and involve a number of risks, uncertainties and assumptions that are difficult to predict.

For example, we may use forward-looking statements when addressing topics such as: our expectations regarding the availability of non-human primates and our ability to diversify our non-human primate (NHP) supply chain; the outcome of (1) the U.S. government investigations and inquiries related to the NHP supply chain (including shipments of non-human primates from Cambodia received by the Company, (2) the putative securities class action lawsuit filed against us and certain current/former officers on May 19, 2023, (3) the derivative lawsuit filed against members of the Board of Directors and certain current/former officers on November 8, 2023, and (4) the derivative lawsuit filed against certain current/former members of the Board of Directors and certain current/former officers on August 2, 2024; the timing and impact of the development and implementation of enhanced procedures to reasonably ensure that non-human primates we source are purpose-bred; changes and uncertainties in the global economy and financial markets, including any changes in business, political, or economic conditions due to the November 16, 2022 announcement by the U.S. Department of Justice through the U.S. Attorney’s Office for the Southern District of Florida that a Cambodian non-human primate supplier and two Cambodian officials had been criminally charged in connection with illegally importing non-human primates into the United States; client demand, particularly future demand for drug discovery and development products and services, including the outsourcing of these services; our expectations with respect to our ability to meet financial targets; our expectations regarding stock repurchases, including the number of shares to be repurchased, expected timing and duration, the amount of capital that may be expended and the treatment of repurchased shares; our ability to successfully execute our business strategy; our ability to timely build infrastructure to satisfy capacity needs and support business growth, our ability to fund our operations for the foreseeable future, the impact of unauthorized access into our information systems, including the timing and effectiveness of any enhanced security and monitoring present spending trends and other cost reduction activities by our clients; future actions by our management; the outcome of contingencies; changes in our business strategy, business practices and methods of generating revenue; the development and performance of our services and products; market and industry conditions, including competitive and pricing trends and the impact of those conditions, including on our allowances for credit losses; our strategic relationships with leading pharmaceutical and biotechnology companies, venture capital investments, and opportunities for future similar arrangements; our cost structure; our expectations regarding our acquisitions and divestitures, including their impact and projected timing; our expectations with respect to revenue growth and operating synergies (including the impact of specific actions intended to cause related improvements, particularly with respect to our CDMO business); the nature, timing and impact of specific actions intended to improve overall operating efficiencies and profitability (and our ability to accommodate future demand with our infrastructure), including actions to optimize our global footprint, and gains and losses attributable to businesses we plan to close, consolidate, divest or repurpose and the impact of operations and restructuring actions (including as estimated on an annualized basis); our expectations with respect to our study cancellation rates and the impact of such cancellations; our expectations with respect to tax benefits; changes in our expectations regarding future stock option, restricted stock, performance share units and other equity grants to employees and directors; expectations with respect to foreign currency exchange; assessing (or changing our assessment of) our tax positions for financial statement purposes; our liquidity; and the impact of litigation, including our ability to successfully defend litigation against us. In addition, these statements include the impact of economic and market conditions on us and our clients, the effects of our cost-saving actions and the steps to optimize returns to shareholders on an effective and timely basis; and our ability to withstand the current market conditions.

Forward-looking statements are predictions and are subject to risks, uncertainties and assumptions that are difficult to predict. Therefore, actual results may differ materially and adversely from those expressed in any forward-looking statements. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this document, or in the case of statements incorporated by reference, on the date of the document incorporated by reference. Factors that might cause or contribute to such differences include, but are not limited to, those discussed in our Annual Report on Form 10-K for the year ended December 30, 2023, under the sections entitled “Our Strategy,” “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” and in this Quarterly Report on Form 10-Q, under the sections entitled “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and “Risk Factors,” in our press releases, and other financial filings with the Securities and Exchange Commission. We have no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events, or risks. New information, future events, or risks may cause the forward-looking events we discuss in this report not to occur.

PART I. FINANCIAL INFORMATION

Item 1. Financial Statements

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)

(in thousands, except per share amounts)


	Three Months Ended				Six Months Ended
	June 29, 2024		July 1, 2023		June 29, 2024		July 1, 2023
Service revenue	$	842,900	$	874,891	$	1,659,762	$	1,732,257
Product revenue	183,217		185,046		377,915		357,053
Total revenue	1,026,117		1,059,937		2,037,677		2,089,310
Costs and expenses:
Cost of services provided (excluding amortization of intangible assets)	577,383		578,099		1,155,547		1,143,576
Cost of products sold (excluding amortization of intangible assets)	95,021		82,861		183,574		169,103
Selling, general and administrative	169,791		199,758		356,082		374,604
Amortization of intangible assets	32,270		34,274		64,845		69,190
Operating income	151,652		164,945		277,629		332,837
Other income (expense):
Interest income	3,010		1,426		5,212		2,232
Interest expense	(32,769)		(35,044)		(67,770)		(69,424)
Other income (expense), net	(2,240)		(2,663)		3,593		(5,940)
Income before income taxes	119,653		128,664		218,664		259,705
Provision for income taxes	25,392		29,221		49,921		56,308
Net income	94,261		99,443		168,743		203,397
Less: Net income attributable to noncontrolling interests	180		2,423		1,702		3,246
Net income available to Charles River Laboratories International, Inc.	$	94,081	$	97,020	$	167,041	$	200,151

Calculation of net income per share attributable to common shareholders of Charles River Laboratories International, Inc.
Net income available to Charles River Laboratories International, Inc.	$	94,081	$	97,020	$	167,041	$	200,151
Less: Adjustment of redeemable noncontrolling interest	301		—		702		—
Less: Incremental dividends attributable to noncontrolling interest holders	3,792		—		9,022		—
Net income available to Charles River Laboratories International, Inc. common shareholders	$	89,988	$	97,020	$	157,317	$	200,151

Earnings per common share
Net income attributable to common shareholders:
Basic	$	1.75	$	1.89	$	3.06	$	3.91
Diluted	$	1.74	$	1.89	$	3.04	$	3.90

Weighted-average number of common shares outstanding:
Basic	51,551		51,216		51,494		51,157
Diluted	51,846		51,467		51,810		51,382

See Notes to Unaudited Condensed Consolidated Financial Statements.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED)

(in thousands)


	Three Months Ended				Six Months Ended
	June 29, 2024		July 1, 2023		June 29, 2024		July 1, 2023
Net income	$	94,261	$	99,443	$	168,743	$	203,397
Other comprehensive income (loss):
Foreign currency translation adjustment	(21,678)		23,227		(84,518)		46,540
Amortization of net loss, settlement losses, and prior service benefit included in total cost for pension and other post-retirement benefit plans	342		174		686		344
Unrealized gains (losses) on hedging instruments	(396)		6,046		372		4,644
Other comprehensive income (loss), before income taxes	(21,732)		29,447		(83,460)		51,528
Less: Income tax expense (benefit) related to items of other comprehensive income	(2,027)		937		(7,500)		(101)
Comprehensive income, net of income taxes	74,556		127,953		92,783		255,026
Less: Comprehensive income (loss) related to noncontrolling interests, net of income taxes	265		78		(976)		1,087
Comprehensive income attributable to Charles River Laboratories International, Inc., net of income taxes	$	74,291	$	127,875	$	93,759	$	253,939







See Notes to Unaudited Condensed Consolidated Financial Statements.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED)

(in thousands, except per share amounts)


	June 29, 2024		December 30, 2023
Assets
Current assets:
Cash and cash equivalents	$	179,213	$	276,771
Trade receivables and contract assets, net of allowances for credit losses of $24,951 and $25,722, respectively	762,221		780,375
Inventories	349,111		380,259
Prepaid assets	97,892		87,879
Other current assets	110,836		83,378
Total current assets	1,499,273		1,608,662
Property, plant and equipment, net	1,613,895		1,639,741
Venture capital and strategic equity investments	231,859		243,811
Operating lease right-of-use assets, net	386,147		394,029
Goodwill	3,079,693		3,095,045
Intangible assets, net	800,129		864,051
Deferred tax assets	36,109		40,279
Other assets	301,178		309,383
Total assets	$	7,948,283	$	8,195,001
Liabilities, Redeemable Noncontrolling Interests and Equity
Current liabilities:
Accounts payable	$	133,101	$	168,937
Accrued compensation	176,667		213,290
Deferred revenue	247,177		241,820
Accrued liabilities	192,156		227,825
Other current liabilities	198,418		203,210
Total current liabilities	947,519		1,055,082
Long-term debt, net and finance leases	2,409,380		2,647,147
Operating lease right-of-use liabilities	428,587		419,234
Deferred tax liabilities	165,183		191,349
Other long-term liabilities	224,520		223,191
Total liabilities	4,175,189		4,536,003
Commitments and contingencies (Notes 2, 11, 13, and 15)
Redeemable noncontrolling interest	46,076		56,722
Equity:
Preferred stock, $0.01 par value; 20,000 shares authorized; no shares issued and outstanding	—		—
Common stock, $0.01 par value; 120,000 shares authorized; 51,696 shares issued and 51,613 shares outstanding as of June 29, 2024, and 51,338 shares issued and outstanding as of December 30, 2023	517		513
Additional paid-in capital	1,956,629		1,905,578
Retained earnings	2,053,557		1,887,218
Treasury stock, at cost, 83 and zero shares, as of June 29, 2024 and December 30, 2023, respectively	(18,265)		—
Accumulated other comprehensive loss	(269,709)		(196,427)
Total Charles River Laboratories International, Inc. equity	3,722,729		3,596,882
Nonredeemable noncontrolling interests	4,289		5,394
Total equity	3,727,018		3,602,276
Total liabilities, noncontrolling interests and equity	$	7,948,283	$	8,195,001
See Notes to Unaudited Condensed Consolidated Financial Statements.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

(in thousands)


	Six Months Ended
	June 29, 2024		July 1, 2023
Cash flows relating to operating activities
Net income	$	168,743	$	203,397
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	171,439		154,740
Stock-based compensation	33,325		29,730

Deferred income taxes	(13,073)		(16,555)
Long-lived asset impairment charges	14,250		10,453
(Gain) loss on venture capital & strategic equity investments, net	(6,305)		5,176
Provision for credit losses	4,719		9,849
Loss on divestitures, net	659		563

Other, net	9,090		3,229
Changes in assets and liabilities:
Trade receivables and contract assets, net	1,072		(48,249)
Inventories	9,750		(32,671)
Accounts payable	(6,436)		(24,985)
Accrued compensation	(33,153)		(7,648)
Deferred revenue	8,151		(6,796)
Customer contract deposits	7,849		(17,519)
Other assets and liabilities, net	(46,657)		(5,209)
Net cash provided by operating activities	323,423		257,505
Cash flows relating to investing activities
Acquisition of businesses and assets, net of cash acquired	(5,479)		(50,166)
Capital expenditures	(118,630)		(174,258)
Purchases of investments and contributions to venture capital investments	(35,538)		(22,689)
Proceeds from sale of investments	12,359		2,943

Other, net	(370)		(1,057)
Net cash used in investing activities	(147,658)		(245,227)
Cash flows relating to financing activities
Proceeds from long-term debt and revolving credit facility	741,200		281,796
Proceeds from exercises of stock options	22,331		15,719
Payments on long-term debt, revolving credit facility, and finance lease obligations	(987,344)		(317,049)
Purchase of treasury stock	(18,265)		(23,978)
Payments of contingent consideration	—		(2,711)
Purchases of additional equity interests, net	(12,000)		—
Other, net	(13,434)		—
Net cash used in financing activities	(267,512)		(46,223)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	(11,729)		1,508
Net change in cash, cash equivalents, and restricted cash	(103,476)		(32,437)
Cash, cash equivalents, and restricted cash, beginning of period	284,480		241,214
Cash, cash equivalents, and restricted cash, end of period	$	181,004	$	208,777











See Notes to Unaudited Condensed Consolidated Financial Statements.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY AND REDEEMABLE NONCONTROLLING INTERESTS (UNAUDITED)

(in thousands)


	Redeemable Noncontrolling Interests		Common Stock			Additional Paid-In Capital		Retained Earnings		Accumulated Other Comprehensive Income (Loss)		Treasury Stock			Total Charles River Laboratories, Inc. Equity		Noncontrolling Interest		Total Equity
			Shares	Amount								Shares	Amount
December 30, 2023	$	56,722	51,338	$	513	$	1,905,578	$	1,887,218	$	(196,427)	—	$	—	$	3,596,882	$	5,394	$	3,602,276
Net income	1,201		—	—		—		72,960		—		—	—		72,960		321		73,281
Other comprehensive (loss), net of tax	(2,763)		—	—		—		—		(53,492)		—	—		(53,492)		—		(53,492)
Adjustment of redeemable noncontrolling interests to redemption value	4,807		—	—		(4,406)		(401)		—		—	—		(4,807)		—		(4,807)
Dividends to noncontrolling interests	(2,192)		—	—		—		—		—		—	—		—		—		—
Issuance of stock under employee compensation plans	—		214	2		21,503		—		—		—	—		21,505		—		21,505
Purchase of treasury shares	—		—	—		—		—		—		42	(9,351)		(9,351)		—		(9,351)
Stock-based compensation	—		—	—		16,738		—		—		—	—		16,738		—		16,738
March 30, 2024	57,775		51,552	515		1,939,413		1,959,777		(249,919)		42	(9,351)		3,640,435		5,715		3,646,150
Net income	(332)		—	—		—		94,081		—		—	—		94,081		512		94,593
Other comprehensive income (loss), net of tax	85		—	—		—		—		(19,790)		—	—		(19,790)		—		(19,790)
Adjustment of redeemable noncontrolling interest to redemption value	496		—	—		(195)		(301)		—		—	—		(496)		—		(496)
Dividends to noncontrolling interests	—		—	—		—		—		—		—	—		—		(1,938)		(1,938)
Purchase of remaining equity interest of other redeemable noncontrolling interest	(12,000)		—	—		—		—		—		—	—		—		—		—
Adjustment of purchase price of Noveprim redeemable noncontrolling interest	52		—	—		—		—		—		—	—		—		—		—
Issuance of stock under employee compensation plans	—		144	2		824		—		—		—	—		826		—		826
Purchase of treasury shares	—		—	—		—		—		—		41	(8,914)		(8,914)		—		(8,914)
Stock-based compensation	—		—	—		16,587		—		—		—	—		16,587		—		16,587
June 29, 2024	$	46,076	51,696	$	517	$	1,956,629	$	2,053,557	$	(269,709)	83	$	(18,265)	$	3,722,729	$	4,289	$	3,727,018









See Notes to Unaudited Condensed Consolidated Financial Statements.


	Redeemable Noncontrolling Interests		Common Stock			Additional Paid-In Capital		Retained Earnings		Accumulated Other Comprehensive Income (Loss)		Treasury Stock			Total Charles River Laboratories, Inc. Equity		Noncontrolling Interest		Total Equity
			Shares	Amount								Shares	Amount
December 31, 2022	$	42,427	50,944	$	509	$	1,804,940	$	1,432,901	$	(262,057)	—	$	—	$	2,976,293	$	4,785	$	2,981,078
Net income	322		—	—		—		103,131		—		—	—		103,131		501		103,632
Other comprehensive income, net of tax	186		—	—		—		—		22,933		—	—		22,933		—		22,933

Issuance of stock under employee compensation plans	—		316	3		11,789		—		—		—	—		11,792		—		11,792
Purchase of treasury shares	—		—	—		—		—		—		78	(19,012)		(19,012)		—		(19,012)
Stock-based compensation	—		—	—		13,460		—		—		—	—		13,460		—		13,460
April 1, 2023	42,935		51,260	512		1,830,189		1,536,032		(239,124)		78	(19,012)		3,108,597		5,286		3,113,883
Net income	1,857		—	—		—		97,020		—		—	—		97,020		566		97,586
Other comprehensive income, net of tax	(2,345)		—	—		—		—		30,855		—	—		30,855		—		30,855

Issuance of stock under employee compensation plans	—		110	1		3,926		—		—		—	—		3,927		—		3,927
Purchase of treasury shares	—		—	—		—		—		—		26	(4,966)		(4,966)		—		(4,966)
Stock-based compensation	—		—	—		16,270		—		—		—	—		16,270		—		16,270
July 1, 2023	$	42,447	51,370	$	513	$	1,850,385	$	1,633,052	$	(208,269)	104	$	(23,978)	$	3,251,703	$	5,852	$	3,257,555








See Notes to Unaudited Condensed Consolidated Financial Statements.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

1. BASIS OF PRESENTATION

The accompanying condensed consolidated financial statements are unaudited and have been prepared by Charles River Laboratories International, Inc. (the Company) in accordance with accounting principles generally accepted in the United States (U.S. GAAP) and pursuant to the rules and regulations of the Securities and Exchange Commission (SEC). The year-end condensed consolidated balance sheet data was derived from the Company’s audited consolidated financial statements, but does not include all disclosures required by U.S. GAAP. These unaudited condensed consolidated financial statements should be read in conjunction with the Company’s Annual Report on Form 10-K for fiscal year 2023 as filed with the SEC on February 14, 2024. Certain reclassifications of prior year amounts have been made to conform to the current year presentation. The unaudited condensed consolidated financial statements, in the opinion of management, reflect all normal and recurring adjustments necessary for a fair statement of the Company’s financial position and results of operations.

Use of Estimates

The preparation of unaudited condensed consolidated financial statements in accordance with U.S. GAAP requires that the Company make estimates and judgments that may affect the reported amounts of assets, liabilities, revenues, expenses and related disclosure of contingent assets and liabilities. On an on-going basis, the Company evaluates its estimates, judgments, and methodologies. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Actual results may differ from these estimates under different assumptions or conditions. Changes in estimates are reflected in reported results in the period in which they become known.

Newly Issued Accounting Pronouncements

In November 2023, the FASB issued ASU 2023-07, “Improvements to Reportable Segment Disclosures (Topic 280)”. ASU 2023-07 modifies reportable segment disclosure requirements, primarily through enhanced disclosures about segment expenses categorized as significant or regularly provided to the Chief Operating Decision Maker (CODM). In addition, the amendments enhance interim disclosure requirements, clarify circumstances in which an entity can disclose multiple segment measures of profit or loss, and contain other disclosure requirements. The purpose of the amendments is to enable investors to better understand an entity’s overall performance and assess potential future cash flows. This ASU is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted and the amendments in this update are required to be applied on a retrospective basis. The Company is currently evaluating the impact this new standard will have on the related disclosures in the annual consolidated financial statements, but does not believe there will be a material impact.

In December 2023, the FASB issued ASU 2023-09, “Improvements to Income Tax Disclosures (Topic 740)”. ASU 2023-09 requires enhanced disclosures on income taxes paid, adds disaggregation of continuing operations before income taxes between foreign and domestic earnings and defines specific categories for the reconciliation of jurisdictional tax rate to effective tax rate. This ASU is effective for fiscal years beginning after December 15, 2024, and can be applied on a prospective basis. The Company is currently evaluating the impact this new standard will have on the related disclosures on the consolidated financial statements.

Summary of Significant Accounting Policies

The Company’s significant accounting policies are described in Note 1, “Description of Business and Summary of Significant Accounting Policies” in the Company’s Annual Report on Form 10-K for fiscal year 2023 as filed with the SEC on February 14, 2024.

Consolidation

The Company’s unaudited condensed consolidated financial statements reflect its financial statements and those of its subsidiaries in which the Company holds a controlling financial interest. For consolidated entities in which the Company owns or is exposed to less than 100% of the economics, the Company records net income (loss) attributable to noncontrolling interests in its unaudited condensed consolidated statements of income equal to the percentage of the economic or ownership interest retained in such entities by the respective noncontrolling parties. Redeemable noncontrolling interests, where the noncontrolling interest holders have the ability to require the Company to purchase the remaining interests, are classified in the mezzanine section of the unaudited condensed consolidated balance sheets, which is presented above the equity section and below liabilities. Intercompany balances and transactions are eliminated in consolidation.

The Company’s fiscal year is typically based on 52-weeks, with each quarter composed of 13 weeks ending on the last Saturday on, or closest to, March 31, June 30, September 30, and December 31. A 53rd week in the fourth quarter of the fiscal year is occasionally necessary to align with a December 31 calendar year-end.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Segment Reporting

The Company reports its results in three reportable segments: Research Models and Services (RMS), Discovery and Safety Assessment (DSA), and Manufacturing Solutions (Manufacturing).

The Company’s RMS reportable segment includes the Research Models, Research Model Services, and Cell Solutions businesses. Research Models includes the commercial production and sale of small research models, as well as the supply of large research models. Research Model Services includes: Insourcing Solutions (IS), which provides colony management of clients’ research operations (including recruitment, training, staffing, and management services) within the clients’ facilities and utilizing the Charles River Accelerator and Development Lab (CRADL™) offering, which provides vivarium space to clients, Genetically Engineered Models and Services (GEMS), which performs contract breeding and other services associated with genetically engineered models, and Research Animal Diagnostic Services (RADS), which provides health monitoring and diagnostics services related to research models; and Cell Solutions, which supplies controlled, consistent, customized primary cells and blood components derived from normal and mobilized peripheral blood and bone marrow.

The Company’s DSA reportable segment includes two businesses: Discovery Services and Safety Assessment. The Company provides regulated and non-regulated DSA services to support the research, development, and regulatory-required safety testing of potential new drugs, including therapeutic discovery and optimization plus in vitro and in vivo studies, laboratory support services, and strategic non-clinical consulting and program management to support product development.

The Company’s Manufacturing reportable segment includes Microbial Solutions, which provides in vitro (non-animal) lot-release testing products, microbial detection products, and species identification services and Biologics Solutions (Biologics), which performs specialized testing of biologics (Biologics Testing Solutions) as well as contract development and manufacturing products and services (CDMO).

2. ACQUISITIONS AND DIVESTITURES

Fiscal 2023 Acquisition

Noveprim Group

On November 30, 2023, the Company completed the acquisition of an additional 41% equity interest of Noveprim Group (Noveprim), a leading supplier of non-human primates (NHPs) located in Mauritius, resulting in a 90% controlling interest. The Company had previously acquired a 49% equity interest in 2022 for $90.0 million plus additional contingent payments up to $5.0 million based on future performance. The total consideration allocable to the Noveprim acquisition is $392.4 million, which includes $144.6 million additional cash paid for the 41% equity interest, elimination of historical activity and intercompany balances of $209.5 million which includes a remeasurement gain on the 49% equity investment of $113.0 million, contingent consideration of $33.3 million, deferred purchase price of $12.0 million payable from 2024 through 2027, offset by estimated post-closing adjustments for working capital of $7.0 million. The purchase price reflected a preliminary agreement with seller on working capital and debt, which was adjusted from $13.8 million to $7.0 million during the quarter ended June 29, 2024. As a result of measurement period adjustments to the purchase price, goodwill and remeasurement gains on the previous 49% equity investment for the quarter ended June 29, 2024, were increased by $17.6 million and $9.8 million, respectively. The contingent consideration fair value is estimated using a Monte Carlo Simulation model and the maximum contingent contractual payments are up to $55.0 million based on future performance and milestone achievements in fiscal years 2023 through 2025. The Company has the call option right to purchase the remaining 10% equity interest up until one month after the sixth anniversary of closing the 41% equity interest. On the first anniversary of the expiration of the call option, a 12-month put option will be triggered giving the seller the right to require the Company to acquire the remaining shares of the seller. The redemption price for the call/put is fixed and ranges from $47.0 million to $54.0 million depending on when exercised. The noncontrolling interest is classified as a redeemable noncontrolling interest in the mezzanine section of the unaudited condensed consolidated balance sheet. The acquisition was funded through a combination of available cash and proceeds from the Company’s Credit Facility. This business is reported as part of the Company’s DSA reportable segment for NHPs vertically integrated into the DSA supply chain and the RMS reportable segment for those NHPs sold to third party customers. The Company incurred transaction and integration costs in connection with the acquisition of $0.7 million and $1.4 million for the three months ended June 29, 2024 and July 1, 2023, respectively, which was primarily included in Selling, general and administrative expenses within the unaudited condensed consolidated statements of income. The Company incurred transaction and integration costs in connection with the acquisition of $0.9 million and $2.2 million for six months ended June 29, 2024 and July 1, 2023, respectively, which was primarily included in Selling, general and administrative expenses within the unaudited condensed consolidated statements of income.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

SAMDI Tech, Inc.

On January 27, 2023, the Company acquired SAMDI Tech, Inc., (SAMDI), a leading provider of high-quality, label-free high-throughput screening (HTS) solutions for drug discovery research. The acquisition of SAMDI will provide clients with seamless access to the premier, label-free HTS MS platform and create a comprehensive, library of drug discovery solutions. The purchase price of SAMDI was $62.8 million, net of $0.4 million in cash, inclusive of a 20% strategic equity interest previously owned by the Company of $12.6 million. The acquisition was funded through a combination of available cash and proceeds from the Company’s Credit Facility. This business is reported as part of the Company’s DSA reportable segment. No significant transaction and integration costs were incurred with the acquisition for the three and six months ended June 29, 2024. The Company incurred transaction and integration costs in connection with the acquisition of $0.3 million for the three and six months ended July 1, 2023, respectively, which was primarily included in Selling, general and administrative expenses within the unaudited condensed consolidated statements of income.

Purchase price information

The purchase price allocation was as follows:


	Noveprim Group(1)		SAMDI Tech, Inc.
	November 30, 2023		January 27, 2023
	(in thousands)
Trade receivables	$	1,308	$	513
Inventories	66,500		—
Other current assets (excluding cash)	3,261		75
Property, plant and equipment	36,154		593
Operating lease right-of-use asset, net	104		—
Goodwill (2)	190,024		37,129
Definite-lived intangible assets	9,500		33,070
Other long-term assets (3)	167,907		6
Deferred revenue	—		(43)
Other current liabilities	(16,268)		(351)
Operating lease right-of-use liabilities (Long-term)	(97)		—
Deferred tax liabilities	(12,984)		(8,191)
Other long-term liabilities	(7,579)		—
Redeemable noncontrolling interest (4)	(45,426)		—
Total purchase price allocation	$	392,404	$	62,801

(1) Purchase price allocation is preliminary and subject to change as additional information becomes available concerning the fair value and tax basis of the assets acquired and liabilities assumed, including certain contracts, obligations, and finalization of any working capital adjustments. Any additional adjustments to the purchase price allocation will be made as soon as practicable but no later than one year from the date of acquisition.
(2) The goodwill resulting from these transactions is primarily attributable to the potential growth of the Company’s segments from new customers introduced to the acquired businesses or synergies to be realized from acquiring an internal supplier servicing the DSA business and the assembled workforce of the acquirees, thus is not deductible for tax purposes.
(3) Other long-term assets acquired from the Noveprim acquisition include $167.8 million of biological assets, which will be amortized over an estimated eight-year useful life.
(4) Refer to Note 12. Equity and Noncontrolling Interests for further a description of the 10% noncontrolling interest fair value.

The definite-lived intangible assets acquired were as follows:


	Noveprim Group		SAMDI Tech, Inc.
Definite-Lived Intangible Assets	(in thousands)
Client relationships	$	—	$	23,400
Other intangible assets	9,500		9,670
Total definite-lived intangible assets	$	9,500	$	33,070

Weighted Average Amortization Life	(in years)
Client relationships	—		15
Other intangible assets	7		7
Total definite-lived intangible assets	7		12

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

3. REVENUE FROM CONTRACTS WITH CUSTOMERS

Disaggregation of Revenue

The following table disaggregates the Company’s revenue by major business line and timing of transfer of products or services:


	Three Months Ended				Six Months Ended
	June 29, 2024		July 1, 2023		June 29, 2024		July 1, 2023
	(in thousands)
Timing of Revenue Recognition:
RMS
Services and products transferred over time	$	95,299	$	94,458	$	192,348	$	188,097
Services and products transferred at a point in time	111,090		115,490		234,948		221,617
Total RMS revenue	206,389		209,948		427,296		409,714
DSA
Services and products transferred over time	626,785		662,653		1,230,910		1,324,489
Services and products transferred at a point in time	634		804		1,961		1,321
Total DSA revenue	627,419		663,457		1,232,871		1,325,810
Manufacturing
Services and products transferred over time	104,481		100,460		204,539		186,546
Services and products transferred at a point in time	87,828		86,072		172,971		167,240
Total Manufacturing revenue	192,309		186,532		377,510		353,786
Total revenue	$	1,026,117	$	1,059,937	$	2,037,677	$	2,089,310

Contract Balances from Contracts with Customers

The following table provides information about client receivables, contract assets, and contract liabilities from contracts with customers:


	June 29, 2024		December 30, 2023
	(in thousands)
Assets from contracts with customers
Client receivables	$	568,283	$	578,077
Unbilled revenue	218,889		228,020
Total	787,172		806,097
Less: Allowance for credit losses	(24,951)		(25,722)
Trade receivables and contract assets, net	$	762,221	$	780,375

Liabilities from contracts with customers
Current deferred revenue	$	247,177	$	241,820
Long-term deferred revenue (included in Other long-term liabilities)	29,139		30,919
Customer contract deposits (included in Other current liabilities)	92,032		85,554

Approximately 85% of unbilled revenue as of December 30, 2023, which was $228 million, was billed during the six months ended June 29, 2024. Approximately 85% of unbilled revenue as of December 31, 2022, which was $204 million, was billed during the six months ended July 1, 2023.

Approximately 70% of contract liabilities as of December 30, 2023, which was $273 million, were recognized as revenue during the six months ended June 29, 2024. Approximately 75% of contract liabilities as of December 31, 2022, which was $290 million, were recognized as revenue during the six months ended July 1, 2023.

When the Company does not have the unconditional right to advanced billings, both advanced client payments and unpaid advanced client billings are excluded from deferred revenue, with the advanced billings also being excluded from client

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

receivables. The Company excluded approximately $46 million and $41 million of unpaid advanced client billings from both client receivables and deferred revenue in the accompanying unaudited condensed consolidated balance sheets as of June 29, 2024 and December 30, 2023, respectively.

Allowance for Credit Losses

The following is a summary of the activity of the Company’s allowance for credit losses:


	Six Months Ended
		June 29, 2024		July 1, 2023
		(in thousands)
Beginning balance		$	25,722	$	11,278
Provisions		4,719		9,849
Reductions		(5,490)		(3,087)
Ending balance		$	24,951	$	18,040

Net provision expenses were $4.1 million and $9.2 million during the six months ended June 29, 2024 and July 1, 2023, respectively and include recoveries of balances previously written off, which are excluded from the table above.

Transaction Price Allocated to Future Performance Obligations

The Company discloses the aggregate amount of transaction price that is allocated to performance obligations that have not yet been satisfied as of June 29, 2024. Excluded from the disclosure is the value of unsatisfied performance obligations for contracts with an original expected length of one year or less, contracts for which revenue is recognized at the amount to which the Company has the right to invoice for services performed, and service revenue recognized in accordance with ASC 842, “Leases”. The aggregate amount of transaction price allocated to the remaining performance obligations for all open customer contracts as of June 29, 2024 was $856.6 million. The Company will recognize revenues for these performance obligations as they are satisfied, approximately 50% of which is expected to occur within the next twelve months and the remainder recognized thereafter during the remaining contract term.

Other Performance Obligations

As part of the Company’s service offerings, the Company has identified performance obligations related to leasing Company owned assets. In certain arrangements, customers obtain substantially all of the economic benefits of the identified assets, which may include manufacturing suites and related equipment, and have the right to direct the assets’ use over the term of the contract. The associated revenue is recognized on a straight-line basis over the term of the lease, which is generally less than one year.


	Three Months Ended				Six Months Ended
	June 29, 2024		July 1, 2023		June 29, 2024		July 1, 2023
	(in thousands)								Affected Line Item in the Unaudited Condensed Consolidated Statements of Income
Lease revenue	$	16,716	$	23,891	$	37,690	$	47,981	Service revenue

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

4. SEGMENT AND GEOGRAPHIC INFORMATION

The Company operates in three reportable segments, RMS, DSA and Manufacturing. Asset information on a reportable segment basis is not disclosed as this information is not separately identified and internally reported to the Company’s Chief Operating Decision Maker (CODM). The following table presents the results of operations by reportable segment:


	Three Months Ended				Six Months Ended
	June 29, 2024		July 1, 2023		June 29, 2024		July 1, 2023
	(in thousands)
RMS
Revenue	$	206,389	$	209,948	$	427,296	$	409,714
Cost of revenue (excluding amortization of intangible assets)	142,942		127,888		283,867		254,692
Selling, general and administrative	27,597		27,653		58,490		54,711
Amortization of intangible assets	5,902		5,489		11,842		10,984
Operating income	$	29,948	$	48,918	$	73,097	$	89,327


DSA
Revenue	$	627,419	$	663,457	$	1,232,871	$	1,325,810
Cost of revenue (excluding amortization of intangible assets)	418,964		420,551		836,876		832,074
Selling, general and administrative	54,479		63,709		111,338		125,707
Amortization of intangible assets	15,600		17,659		31,442		35,060
Operating income	$	138,376	$	161,538	$	253,215	$	332,969


Manufacturing
Revenue	$	192,309	$	186,532	$	377,510	$	353,786
Cost of revenue (excluding amortization of intangible assets)	110,498		112,522		218,378		225,914
Selling, general and administrative	33,813		38,481		66,660		78,218
Amortization of intangible assets	10,768		11,126		21,561		23,145
Operating income	$	37,230	$	24,403	$	70,911	$	26,509


Unallocated Corporate
Selling, general and administrative	$	53,902	$	69,914	$	119,594	$	115,968
Operating income (1)	$	(53,902)	$	(69,914)	$	(119,594)	$	(115,968)

Consolidated
Revenue	$	1,026,117	$	1,059,937	$	2,037,677	$	2,089,310
Cost of revenue (excluding amortization of intangible assets)	672,404		660,960		1,339,121		1,312,679
Selling, general and administrative	169,791		199,758		356,082		374,604
Amortization of intangible assets	32,270		34,274		64,845		69,190
Operating income	$	151,652	$	164,945	$	277,629	$	332,837


(1) Operating income for unallocated corporate consists of costs associated with departments such as senior executives, corporate accounting, legal, tax, human resources, treasury, and investor relations.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Capital expenditures and depreciation and amortization (related to both intangible assets and certain assets acquired in business combinations) by reportable segment are as follows:


	RMS		DSA		Manufacturing		Unallocated Corporate		Consolidated
	(in thousands)
Capital Expenditures
Three Months Ended:
June 29, 2024	$	9,313	$	19,444	$	10,583	$	146	$	39,486
July 1, 2023	7,493		48,326		10,862		702		67,383
Six Months Ended:
June 29, 2024	$	29,357	$	68,403	$	19,445	$	1,425	$	118,630
July 1, 2023	26,577		113,510		32,600		1,571		174,258

Depreciation and amortization
Three Months Ended:
June 29, 2024	$	16,538	$	47,729	$	20,073	$	1,742	$	86,082
July 1, 2023	13,949		43,124		19,523		1,075		77,671
Six Months Ended:
June 29, 2024	$	34,661	$	93,518	$	39,878	$	3,382	$	171,439
July 1, 2023	27,438		85,574		39,607		2,121		154,740

Revenue by geographic area is as follows:


	U.S.		Europe		Canada		Asia Pacific		Other		Consolidated
	(in thousands)
Three Months Ended:
June 29, 2024	$	571,427	$	271,377	$	125,244	$	50,387	$	7,682	$	1,026,117
July 1, 2023	606,775		272,976		117,647		59,864		2,675		1,059,937

Six Months Ended:
June 29, 2024	$	1,133,744	$	547,696	$	235,645	$	96,159	$	24,433	$	2,037,677
July 1, 2023	1,212,216		540,679		228,253		102,677		5,485		2,089,310

Included in the Other category above are operations located in Brazil, Israel, and Mauritius. Revenue represents sales originating in entities physically located in the identified geographic area.

Long-lived assets by geographic area are as follows:


	U.S.		Europe		Canada		Asia Pacific		Other		Consolidated
	(in thousands)
Long-lived assets
June 29, 2024	$	950,254	$	405,429	$	153,945	$	68,868	$	35,399	$	1,613,895
December 30, 2023	964,176		407,375		157,483		74,605		36,102		1,639,741

Long-lived assets consist of property, plant, and equipment, net.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

5. SUPPLEMENTAL CASH FLOW INFORMATION


	Six Months Ended
	June 29, 2024		July 1, 2023
	(in thousands)
Cash paid for income taxes	$	71,722	$	61,816
Cash paid for interest	65,630		66,563
Non-cash investing activities:
Purchases of Property, plant and equipment included in Accounts payable and Accrued liabilities	$	25,278	$	47,850
Assets acquired under finance leases	3,159		154

Cash, cash equivalents and restricted cash is included in the accompanying unaudited balance sheet as follows:


	June 29, 2024		December 30, 2023
	(in thousands)
Supplemental cash flow information:
Cash and cash equivalents	$	179,213	$	276,771

Restricted cash included in Other current assets	325		5,803
Restricted cash included in Other assets	1,466		1,906
Cash, cash equivalents, and restricted cash, end of period	$	181,004	$	284,480

6. INVENTORY

Inventories

The composition of inventories is as follows:


	June 29, 2024		December 30, 2023
	(in thousands)
Raw materials and supplies	$	43,238	$	42,296
Work in process	57,923		59,727
Finished products	247,950		278,236
Inventories	$	349,111	$	380,259

Inventory step up amortization expense incurred for the three and six months ended June 29, 2024 was $3.5 million and $10.6 million, respectively.

7. PROPERTY, PLANT AND EQUIPMENT, NET

The composition of property, plant and equipment, net is as follows:


	June 29, 2024		December 30, 2023
	(in thousands)
Land	$	78,812	$	79,546
Buildings (1)	1,061,408		1,053,915
Machinery and equipment (1)	1,007,210		984,867
Leasehold improvements	381,879		366,556
Furniture and fixtures	32,060		31,284
Computer hardware and software (1)	259,889		254,413
Vehicles (1)	7,149		6,746
Construction in progress	182,823		197,723
Total	3,011,230		2,975,050
Less: Accumulated depreciation	(1,397,335)		(1,335,309)
Property, plant and equipment, net	$	1,613,895	$	1,639,741

(1) These balances include assets under finance leases.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Depreciation expense in the three months ended June 29, 2024 and July 1, 2023 was $47.6 million and $43.4 million, respectively. Depreciation expense in the six months ended June 29, 2024 and July 1, 2023 was $93.3 million and $85.5 million, respectively.

8. VENTURE CAPITAL AND STRATEGIC EQUITY INVESTMENTS

Venture capital investments are summarized below:


	Six Months Ended
	June 29, 2024		July 1, 2023
	(in thousands)
Beginning balance	$	121,158	$	129,012
Capital contributions	6,479		8,702
Distributions	(16,100)		(9,679)
Gains (losses)	1,789		(8,429)
Foreign currency translation	(249)		466
Ending balance	$	113,077	$	120,072

The Company also invests, with minority positions, directly in equity of predominantly privately held companies. Strategic investments are summarized below:


	Six Months Ended
	June 29, 2024		July 1, 2023
	(in thousands)
Beginning balance	$	122,653	$	182,590
Purchase of investments	2,140		13,710
Distributions	—		(4,146)
Gain (loss)	(5,265)		3,253
Reduction for acquisition of entity (1)	—		(12,635)
Foreign currency translation	(746)		(2,563)
Ending balance	$	118,782	$	180,209

(1) Refer to Note 2. Acquisitions for further discussion on the acquisition of SAMDI.

9. FAIR VALUE

Assets and liabilities measured at fair value on a recurring basis are summarized below:


	June 29, 2024
	Level 1		Level 2		Level 3		Total
Current assets measured at fair value:	(in thousands)
Cash equivalents	$	—	$	7,257	$	—	$	7,257
Term deposit	—		26,983		—		26,983
Other assets:
Life insurance policies	—		45,210		—		45,210
Interest rate swap	—		1,338		—		1,338
Total assets measured at fair value	$	—	$	80,788	$	—	$	80,788



Other long-term liabilities measured at fair value:
Contingent consideration	$	—	$	—	$	38,335	$	38,335

Total liabilities measured at fair value	$	—	$	—	$	38,335	$	38,335

The Company recognizes transfers between levels within the fair value hierarchy, if any, at the end of each quarter. During the six months ended June 29, 2024, there were no transfers between levels.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS


	December 30, 2023
	Level 1		Level 2		Level 3		Total
Current assets measured at fair value:	(in thousands)
Cash equivalents	$	—	$	29	$	—	$	29
Other assets:
Life insurance policies	—		40,912		—		40,912
Interest rate swap	—		966		—		966
Total assets measured at fair value	$	—	$	41,907	$	—	$	41,907

Other long-term liabilities measured at fair value
Contingent consideration	$	—	$	—	$	33,265	$	33,265

Total liabilities measured at fair value	$	—	$	—	$	33,265	$	33,265

During the year ended December 30, 2023, there were no transfers between levels.

Contingent Consideration

The following table provides a rollforward of the contingent consideration related to the Company’s acquisitions.


	Six Months Ended
	June 29, 2024		July 1, 2023
	(in thousands)
Beginning balance	$	33,265	$	13,431

Payments	—		(15,130)
Total gains or losses (realized/unrealized):
Adjustment of previously recorded contingent liability	5,070		1,810
Foreign currency translation	—		(111)
Ending balance	$	38,335	$	—

The Company estimates the fair value of contingent consideration obligations through valuation models, such as probability-weighted and option pricing models, which incorporate probability adjusted assumptions and simulations related to the achievement of the milestones and the likelihood of making related payments. The unobservable inputs used in the fair value measurements include the probabilities of successful achievement of certain financial targets, forecasted results or targets, volatility, and discount rates. The remaining maximum potential payments are approximately $55 million, of which the value accrued as of June 29, 2024 is $38 million as the probability of achieving the maximum target is estimated to be 70%. The volatility and weighted average cost of capital is approximately 5% and 8%, respectively. Increases or decreases in these assumptions may result in a higher or lower fair value measurement, respectively.

Cash Flow Hedge

The Company is exposed to market fluctuations in interest rates as well as variability in foreign exchange rates. The Company has an interest rate swap with a notional amount of $500 million maturing November 2, 2024 to manage interest rate fluctuation related to floating rate borrowings under the Credit Facility, at a fixed rate of 4.65%.

Debt Instruments

The book value of the Company’s revolving loans, which are variable rate loans carried at amortized cost, approximates the fair value based on current market pricing of similar debt. As the fair value is based on significant other observable inputs, including current interest and foreign currency exchange rates, it is deemed to be Level 2 within the fair value hierarchy.

The book value of the Company’s Senior Notes are fixed rate obligations carried at amortized cost. Fair value is based on quoted market prices as well as borrowing rates available to the Company. As the fair value is based on significant other

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

observable outputs, it is deemed to be Level 2 within the fair value hierarchy. The book value and fair value of the Company’s Senior Notes is summarized below:


	June 29, 2024				December 30, 2023
	Book Value		Fair Value		Book Value		Fair Value
	(in thousands)
4.25% Senior Notes due 2028	$	500,000	$	468,750	$	500,000	$	478,100
3.75% Senior Notes due 2029	500,000		453,750		500,000		458,100
4.00% Senior Notes due 2031	500,000		445,000		500,000		449,350

10. GOODWILL AND INTANGIBLE ASSETS

Goodwill

The following table provides a rollforward of the Company’s goodwill:


	RMS		DSA (1)		Manufacturing		Total
	(in thousands)
December 30, 2023	$	497,474	$	1,662,434	$	935,137	$	3,095,045
Acquisitions	—		17,675		—		17,675

Foreign exchange	(536)		(29,251)		(3,240)		(33,027)
June 29, 2024	$	496,938	$	1,650,858	$	931,897	$	3,079,693
(1) DSA includes accumulated impairment losses of $1 billion, which were recognized in fiscal years 2008 and 2010.

The decrease in goodwill during the six months ended June 29, 2024 is related to foreign exchange in the DSA and Manufacturing reportable segments, partially offset by measurement period adjustments related to the acquisition of Noveprim in the DSA reportable segment.

Intangible Assets, Net

The following table displays intangible assets, net by major class:


	June 29, 2024						December 30, 2023
	Gross		Accumulated Amortization		Net		Gross		Accumulated Amortization		Net
	(in thousands)
Client relationships	$	1,518,194	$	(766,261)	$	751,933	$	1,528,780	$	(721,322)	$	807,458
Technology	140,737		(114,410)		26,327		142,190		(111,764)		30,426
Trademarks and trade names	11,849		(5,098)		6,751		11,878		(4,568)		7,310
Backlog	3,100		(2,792)		308		3,100		(2,177)		923
Other	42,866		(28,056)		14,810		43,611		(25,677)		17,934
Intangible assets	$	1,716,746	$	(916,617)	$	800,129	$	1,729,559	$	(865,508)	$	864,051

The decrease in intangible assets, net during the six months ended June 29, 2024 related to normal amortization over the useful lives.

Amortization expense of definite-lived intangible assets for three months ended June 29, 2024 and July 1, 2023 was $32.3 million and $34.3 million, respectively. Amortization expense of definite-lived intangible assets for six months ended June 29, 2024 and July 1, 2023 was $64.8 million and $69.2 million, respectively.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

11. DEBT AND OTHER FINANCING ARRANGEMENTS

Long-term debt, net and finance leases consists of the following:


	June 29, 2024		December 30, 2023
	(in thousands)
Revolving facility	$	879,498	$	1,129,243
4.25% Senior Notes due 2028	500,000		500,000
3.75% Senior Notes due 2029	500,000		500,000
4.00% Senior Notes due 2031	500,000		500,000
Other debt	16,125		9,575
Finance leases	29,637		28,550
Total debt and finance leases	2,425,260		2,667,368
Less:
Current portion of long-term debt	435		3,172
Current portion of finance leases	2,778		2,398
Current portion of long-term debt and finance leases	3,213		5,570
Long-term debt and finance leases	2,422,047		2,661,798
Debt discount and debt issuance costs	(12,667)		(14,651)
Long-term debt, net and finance leases	$	2,409,380	$	2,647,147

As of June 29, 2024 and December 30, 2023, the weighted average interest rate on the Company’s debt was 4.64% and 4.93%, respectively.

Letters of Credit

As of June 29, 2024 and December 30, 2023, the Company had $21.2 million and $21.6 million, respectively, in outstanding letters of credit.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

12. EQUITY AND NONCONTROLLING INTERESTS

Earnings Per Share

The following table reconciles the numerator and denominator in the computations of basic and diluted earnings per share:


	Three Months Ended				Six Months Ended
	June 29, 2024		July 1, 2023		June 29, 2024		July 1, 2023
	(in thousands)
Numerator:
Net income	$	94,261	$	99,443	$	168,743	$	203,397
Less: Net income attributable to noncontrolling interests	180		2,423		1,702		3,246
Net income available to Charles River Laboratories International, Inc.	94,081		97,020		167,041		200,151

Calculation of net income per share attributable to common shareholders of Charles River Laboratories International, Inc.
Net income available to Charles River Laboratories International, Inc.	$	94,081	$	97,020	$	167,041	$	200,151
Less: Adjustment of redeemable noncontrolling interest (1)	301		—		702		—
Less: Incremental dividends attributable to noncontrolling interest holders (2)	3,792		—		9,022		—
Net income available to Charles River Laboratories International, Inc. common shareholders	$	89,988	$	97,020	$	157,317	$	200,151

Denominator:
Weighted-average shares outstanding - Basic	51,551		51,216		51,494		51,157
Effect of dilutive securities:
Stock options, restricted stock units and performance share units	295		251		316		225
Weighted-average shares outstanding - Diluted	51,846		51,467		51,810		51,382

Anti-dilutive common stock equivalents (3)	506		594		482		589

(1) Represents adjustments of redeemable noncontrolling interest that impact retained earnings.
(2) Represents incremental undeclared dividends attributable to Noveprim noncontrolling interest holders who are entitled to preferential dividends for fiscal year 2024.
(3) These common stock equivalents were outstanding for the periods presented, but were not included in the computation of diluted EPS for those periods because their inclusion would have had an anti-dilutive effect.

Treasury Shares

The Company’s Board of Directors had authorized a $1.3 billion stock repurchase program. As of June 29, 2024, the Company had $129.1 million remaining on the authorized stock repurchase program.

On August 2, 2024, the Company’s Board of Directors approved a new stock repurchase authorization of $1.0 billion. This new authorization replaces the prior stock repurchase authorization of $1.3 billion that had $129.1 million remaining on the plan when it was terminated.

The Company’s stock-based compensation plans permit the netting of common stock upon vesting of RSUs and PSUs in order to satisfy individual statutory tax withholding requirements. The Company acquired shares of approximately 0.1 million in the six months ended June 29, 2024 and six months ended July 1, 2023, for $18.3 million and $24.0 million, respectively, from such netting.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Accumulated Other Comprehensive Income (Loss)

Changes to each component of accumulated other comprehensive income (loss), net of income taxes, are as follows:


	Foreign Currency Translation Adjustment and Other		Pension and Other Post-Retirement Benefit Plans		Net Unrealized (Loss) Gain on Cash Flow Hedge		Total
	(in thousands)
December 30, 2023	$	(149,999)	$	(47,167)	$	739	$	(196,427)
Other comprehensive income (loss) before reclassifications	(81,840)		686		372		(80,782)

Net current period other comprehensive income (loss)	(81,840)		686		372		(80,782)
Income tax expense (benefit)	(7,759)		170		89		(7,500)
June 29, 2024	$	(224,080)	$	(46,651)	$	1,022	$	(269,709)

Redeemable Noncontrolling Interests

Through June 29, 2024, the Company holds several redeemable noncontrolling interests. Since the Company has the right to purchase, and the noncontrolling interest holders have the right to require the Company to purchase the remaining interest, which represents a derivative embedded within the equity instrument, the noncontrolling interest is classified in the mezzanine section of the unaudited condensed consolidated balance sheets, which is presented above the equity section and below liabilities.

The redeemable noncontrolling interests are measured at the greater of (i) the redemption amount or (ii) the historical value resulting from the original acquisition date fair value, increased or decreased for the noncontrolling interest’s share of net income (loss), equity capital contributions and distributions. The fair value of the redeemable noncontrolling interest is determined using the income approach, with key assumptions being projected cash flows and discount rates based on market participant’s weighted average cost of capital. To the extent redemption value exceeds carrying value, adjustments are recorded to additional paid-in capital, with any cumulative excess of redemption value over fair value recorded in retained earnings, which impacts net income available to common shareholders used in the calculation of earnings per common share.

Noveprim

The Company holds a 90% ownership interest in Noveprim. The Company has the right to purchase, and the noncontrolling interest holders have the right to sell, the remaining 10% equity interest at a fixed redemption value that ranges from $47.0 million to $54.0 million depending on when exercised. The Company has the call option right to purchase the remaining 10% equity up until one month after the sixth anniversary of closing the 41% equity stake (December 2029). On the first anniversary of the expiration of the call option (December 2030), a 12-month put option will be triggered giving the seller the right to require the Company to acquire the remaining shares of the seller for $54.0 million. Additionally, during fiscal year 2024 the 10% noncontrolling interest holders may receive a dividend disproportionate to their equity ownership, of which the fair value of $8.0 million as of the acquisition date was recorded within the redeemable noncontrolling interest. Through June 29, 2024, incremental dividends based on Noveprim statutory net income attributed to the redeemable noncontrolling interest holders of $9.0 million reduced net income available to common shareholders used in the calculation of earnings per common share. The redemption value is accreted to the put purchase price of $54.0 million using the interest method through December 2030. As of June 29, 2024, the redemption value of $46.1 million exceeded both the carrying value and fair value, resulting in both an adjustment to additional paid in capital of $1.8 million and an adjustment to retained earnings of $0.7 million, respectively.

Other redeemable noncontrolling interest

In 2019, the Company acquired an 80% equity interest in a subsidiary, which included a 20% redeemable noncontrolling interest. In June 2022, the Company purchased an additional 10% interest in the subsidiary for $15.0 million, resulting in a remaining noncontrolling interest of 10%. Beginning in 2024, the Company has the right to purchase, and the noncontrolling interest holders have the right to sell, the remaining 10% equity interest at its appraised value. The redemption value is measured at the greater of the appraised value or a predetermined floor. The amount that the Company could be required to pay to purchase the remaining 10% equity interest is not limited. As of March 30, 2024, the redemption value of $12.0 million exceeded the carrying value, resulting in an adjustment to additional paid in capital of $2.8 million. During the second quarter of fiscal 2024, the Company acquired the remaining 10% for $12.0 million.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Vital River

The Company held a 92% ownership interest in Vital River, a commercial provider of research models and related services in China as of December 31, 2022. The Company had the right to purchase, and the noncontrolling interest holders had the right to sell, the remaining 8% equity interest at a contractually defined redemption value, subject to a redemption floor. The amount that the Company could be required to pay to purchase the remaining 8% equity interest was not limited. During the fourth quarter of fiscal 2023, the Company acquired the remaining 8% and paid $4.8 million of the total $24.4 million due. The remaining purchase price payable was included in Accrued liabilities within the Company’s unaudited condensed consolidated balance sheet as of June 29, 2024 and December 30, 2023 and is expected to be paid during fiscal year 2024.

Nonredeemable Noncontrolling Interest

The Company has an investment in an entity whose financial results are consolidated in the Company’s unaudited condensed consolidated financial statements, as it has the ability to exercise control over this entity. The interest of the noncontrolling party in this entity has been recorded as nonredeemable noncontrolling interest within Equity in the accompanying unaudited condensed consolidated balance sheets. The activity within the nonredeemable noncontrolling interest was not material during the three and six months ended June 29, 2024 and July 1, 2023.

13. INCOME TAXES

The Company’s effective tax rates for the three months ended June 29, 2024 and July 1, 2023 were 21.2% and 22.7%, respectively. The decrease in the effective tax rate for the three months ended June 29, 2024 compared to the corresponding prior year period was primarily attributable to non-taxable remeasurement gains on previous equity investment in Noveprim during the three months ended June 29, 2024.

The Company’s effective tax rates for the six months ended June 29, 2024 and July 1, 2023 were 22.8% and 21.7%, respectively. The increase in the effective tax rate for the six months ended June 29, 2024 compared to the same prior year is primarily attributable to decreased tax benefit from stock-based compensation deductions in the six months ended June 29, 2024.

For the three months ended June 29, 2024, the Company’s unrecognized tax benefits increased by $0.6 million to $24.0 million, primarily due to increases in research and development tax credit reserves. For the three months ended June 29, 2024, the amount of unrecognized income tax benefits that would impact the effective tax rate increased by $0.4 million to $21.1 million for the same reasons discussed above. The accrued interest on unrecognized tax benefits was $1.6 million as of June 29, 2024. The Company estimates that it is reasonably possible that the unrecognized tax benefits will decrease by approximately $5 million over the next twelve-month period, primarily due to audit settlements and expiring statutes of limitations.

The Company’s prepaid and accrued tax positions are as follows:


	June 29, 2024		December 30, 2023		Affected Line Item in the Unaudited Condensed Consolidated Balance Sheets
	(in thousands)
Prepaid income tax	$	71,242	$	59,715	Other current assets
Accrued income taxes	35,126		38,819		Other current liabilities

The Company conducts business in a number of tax jurisdictions. As a result, it is subject to tax audits on a regular basis including, but not limited to, such major jurisdictions as the U.S., the U.K., China, France, Germany, and Canada. With few exceptions, the Company is no longer subject to U.S. and international income tax examinations for years before 2020.

The Company and certain of its subsidiaries have ongoing tax controversies in the U.S., Canada, and India. The Company does not anticipate resolution of these audits will have a material impact on its unaudited condensed consolidated financial statements.

14. RESTRUCTURING AND ASSET IMPAIRMENTS

The Company has undertaken restructuring actions impacting the reportable segments at various locations across North America, Europe and Asia. This includes workforce right-sizing actions resulting in severance and transition costs; and costs related to the consolidation of facilities resulting in asset impairment and accelerated depreciation charges. Generally, these actions are considered to be short-term in nature in response to recent macroeconomic impacts on the Company. During fiscal year 2023, the Company began to take restructuring actions as a result of these emerging business trends. The Company incurred restructuring charges of $18.0 million and $35.0 million during the three and six months ended June 29, 2024, respectively and approximately $65 million throughout fiscal year 2023 through June 29, 2024.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

The following table presents restructuring costs by reportable segment:


	Three Months Ended				Six Months Ended
	June 29, 2024		July 1, 2023		June 29, 2024		July 1, 2023
	(in thousands)
RMS	$	10,228	$	—	$	17,615	$	—
DSA	3,766		—		10,257		(2)
Manufacturing	2,657		2,699		4,288		6,187
Unallocated corporate	1,304		—		2,794		—
Total	$	17,955	$	2,699	$	34,954	$	6,185

The following table presents restructuring costs as included within the Company’s unaudited condensed consolidated statements of income:


	June 29, 2024						July 1, 2023
	Severance and Transition Costs		Asset Impairments and Other Costs		Total		Severance and Transition Costs		Asset Impairments and Other Costs		Total
	(in thousands)
Three Months Ended
Cost of services provided (excluding amortization of intangible assets)	$	2,870	$	1,926	$	4,796	$	2,361	$	—	$	2,361
Cost of products sold (excluding amortization of intangible assets)	69		9,154		9,223		36		182		218
Selling, general and administrative	2,958		978		3,936		120		—		120
Total restructuring costs	$	5,897	$	12,058	$	17,955	$	2,517	$	182	$	2,699

Six Months Ended
Cost of services provided (excluding amortization of intangible assets)	$	7,680	$	3,034	$	10,714	$	2,928	$	—	$	2,928
Cost of products sold (excluding amortization of intangible assets)	747		10,484		11,231		54		2,746		2,800
Selling, general and administrative	6,507		6,502		13,009		449		8		457
Total restructuring costs	$	14,934	$	20,020	$	34,954	$	3,431	$	2,754	$	6,185

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Rollforward of Restructuring Activities

The following table provides a rollforward for the Company’s accrued restructuring costs related to all restructuring activities:


	Severance and Transition Costs		Asset Impairments		Other Costs		Total
	(in thousands)
Six Months Ended June 29, 2024
Beginning balance	$	4,175	$	—	$	875	$	5,050
Expense	14,934		14,181		5,839		34,954
Payments / utilization	(9,323)		—		(5,067)		(14,390)
Other non-cash adjustments	—		(14,181)		(772)		(14,953)
Foreign currency adjustments	(57)		—		—		(57)
Ending Balance	$	9,729	$	—	$	875	$	10,604

Six Months Ended July 1, 2023
Beginning balance	$	356	$	—	$	944	$	1,300
Expense	3,431		2,479		275		6,185
Payments / utilization	(811)		—		(303)		(1,114)
Other non-cash adjustments	—		(2,479)		—		(2,479)
Foreign currency adjustments	9		—		—		9
Ending Balance	$	2,985	$	—	$	916	$	3,901

As of June 29, 2024 and December 30, 2023, $10.6 million and $5.1 million, respectively, of severance and other personnel related costs liabilities were included in accrued compensation and accrued liabilities within the Company’s unaudited condensed consolidated balance sheets.

15. COMMITMENTS AND CONTINGENCIES

Litigation

On February 16, 2023, the Company was informed by the U.S. Department of Justice (DOJ) that in conjunction with the U.S. Fish and Wildlife Service (USFWS), it had commenced an investigation into the Company’s conduct regarding several shipments of non-human primates from Cambodia. On February 17, 2023 the Company received a grand jury subpoena requesting certain documents related to such investigation. The Company is aware of a parallel civil investigation being undertaken by the DOJ and USFWS. The Company is cooperating with the DOJ and the USFWS and believes that the concerns raised with respect to the Company’s conduct are without merit. The Company maintains a global supplier onboarding and oversight program incorporating risk-based due diligence, auditing, and monitoring practices to help ensure the quality of our supplier relationships and compliance with applicable U.S. and international laws and regulations, and has operated under the belief that all shipments of non-human primates it received satisfied the material requirements, documentation and related processes and procedures of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) documentation and related processes and procedures, which guides the release of each import by USFWS. Notwithstanding our efforts and good-faith belief, in connection with the civil investigation, the Company has voluntarily suspended future shipments of non-human primates from Cambodia to the United States until such time that the Company and USFWS can agree upon and implement additional procedures to reasonably ensure that non-human primates imported from Cambodia are purpose-bred. The Company continues to care for the Cambodia-sourced non-human primates from certain shipments in the United States. The carrying value of the inventory related to these shipments was approximately $27 million as of June 29, 2024, which reflects the value of the shipments in accordance with the Company’s inventory accounting policy. On May 16, 2023, the Company received an inquiry from the Enforcement Division of the U.S. Securities and Exchange Commission (SEC) requesting it to voluntarily provide information, subsequently augmented with a document subpoena and additional inquiries, primarily related to the sourcing of non-human primates and related disclosures, and the Company is cooperating with these requests. The Company is not able to predict what action, if any, might be taken in the future by the DOJ, USFWS, SEC or other governmental authorities as a result of the investigations. None of the DOJ, USFWS or SEC has provided the Company with any specific timeline or indication as to when these investigations or, specific to the DOJ and USFWS, discussions regarding future processes and procedures, will be concluded or resolved. The Company cannot predict the timing, outcome or possible impact of the investigations, including without limitation any potential fines, penalties or liabilities.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

NOTES TO UNAUDITED CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Financial Officer as defendants along with the Company. The amended complaint asserts claims under §§ 10(b) and 20(a) of the Securities Exchange Act of 1934 (the "Exchange Act") on behalf of a putative class of purchasers of Company securities from May 5, 2020 through February 21, 2023, alleging that certain of the Company’s disclosures about its practices with respect to the importation of non-human primates made during the putative class period were materially false or misleading. On July 1, 2024, the court dismissed the complaint, denied the plaintiff’s informal request for leave to amend, and entered judgment for defendants. On July 30, 2024 the plaintiff filed a notice of appeal. While the Company cannot predict the final outcome of this matter, it believes the class action to be without merit and plans to vigorously defend against it. The Company cannot reasonably estimate the maximum potential exposure or the range of possible loss in association with this matter.

On November 8, 2023, a stockholder filed a derivative lawsuit in the U.S. District Court of the District of Delaware asserting claims on the Company’s behalf against the members of the Company’s Board of Directors and certain of the Company’s current/former officers (James Foster, the Chief Executive Officer; David R. Smith, the former Chief Financial Officer; and Flavia Pease, the current Chief Financial Officer). The complaint alleges that the defendants breached their fiduciary duties to the Company and its stockholders because certain of the Company’s disclosures about its practices with respect to the importation of non-human primates were materially false or misleading. The complaint also alleges that the defendants breached their fiduciary duties by causing the Company to fail to maintain adequate internal controls over securities disclosure and compliance with applicable law and by failing to comply with the company’s Code of Business Conduct and Ethics. The lawsuit is currently stayed by agreement of the parties pending further developments in the Securities Class Action pending in the United States District Court for the District of Massachusetts. On August 2, 2024, a different stockholder filed a lawsuit in the U.S. District Court of Delaware asserting similar derivative claims on the Company’s behalf against members of the Company’s current and former Board of Directors and the same current/former officers based on similar allegations of purportedly misleading disclosures and non-compliance with legal rules and ethics standards in respect of the importation of non-human primates, as well as insider-trading claims against certain of the defendants. While the Company cannot predict the outcome of these matters, it believes the derivative lawsuits to be without merit and plans to vigorously defend against them. The Company cannot reasonably estimate the maximum potential exposure or the range of possible loss in association with these matters.

Aside from the matters above, the Company believes there are no other matters pending against the Company that could have a material impact on the Company’s business, financial condition, or results of operations.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The following discussion should be read in conjunction with our unaudited condensed consolidated financial statements and related notes of this Quarterly Report on Form 10-Q and our audited consolidated financial statements and related notes included in our Annual Report on Form 10-K for fiscal year 2023 as filed with the SEC on February 14, 2024. The following discussion contains forward-looking statements. Actual results may differ significantly from those projected in the forward-looking statements. Factors that might cause future results to differ materially from those projected in the forward-looking statements include, but are not limited to, those discussed in Item 1A, “Risk Factors” included elsewhere within this Form 10-Q. Certain percentage changes may not recalculate due to rounding.

Overview

We are a leading, non-clinical global drug development partner with a mission to create healthier lives. For over 75 years, we have been in the business of providing the research models required in the research and development of new drugs, devices, and therapies. Over this time, we have built upon our original core competency of laboratory animal medicine and science (research model technologies) to develop a diverse portfolio of discovery and safety assessment services, both Good Laboratory Practice (GLP) and non-GLP, that supports our clients from target identification through non-clinical development. We also provide a suite of products and services to support our clients’ manufacturing activities. Utilizing our broad portfolio of products and services enables our clients to create a more efficient and flexible drug development model, which reduces their costs, enhances their productivity and effectiveness, and increases speed to market.

Our client base includes major global pharmaceutical companies, many biotechnology companies; agricultural and industrial chemical, life science, veterinary medicine, medical device, diagnostic and consumer product companies; contract research and contract manufacturing organizations; and other commercial entities, as well as leading hospitals, academic institutions, and government agencies around the world.

Segment Reporting

Our three reportable segments are Research Models and Services (RMS), Discovery and Safety Assessment (DSA), and Manufacturing Solutions (Manufacturing).

Our RMS reportable segment includes the Research Models, Research Model Services, and Cell Solutions businesses. Research Models includes the commercial production and sale of small research models, as well as the supply of large research models. Research Model Services includes: Insourcing Solutions (IS), which provides colony management of our clients’ research operations (including recruitment, training, staffing, and management services) within our clients’ facilities as well as our own vivarium space, utilizing our Charles River Accelerator and Development Lab (CRADL), Genetically Engineered Models and Services (GEMS), which performs contract breeding and other services associated with genetically engineered models; and Research Animal Diagnostic Services (RADS), which provides health monitoring and diagnostics services related to research models; and Cell Solutions provides controlled, consistent, customized primary cells and blood components derived from normal and mobilized peripheral blood and bone marrow.

Our DSA segment is comprised of two businesses: Discovery Services and Safety Assessment. We provide regulated and non-regulated DSA services to support the research, development, and regulatory-required safety testing of potential new drugs, including therapeutic discovery and optimization plus in vitro (non-animal) and in vivo (in research models) studies, laboratory support services, and strategic non-clinical consulting and program management to support product development.

Our Manufacturing reportable segment includes Microbial Solutions, which provides in vitro lot-release testing products, microbial detection products, and species identification services and Biologics Solutions (Biologics), which performs specialized testing of biologics (Biologics Testing Solutions) as well as contract development and manufacturing products and services (CDMO).

U.S. Government Investigations into the Non-Human Primate Supply Chain

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

efforts and good-faith belief, in connection with the civil investigation, the Company has voluntarily suspended future shipments of non-human primates from Cambodia to the United States until such time that the Company and USFWS can agree upon and implement additional procedures to reasonably ensure that non-human primates imported from Cambodia are purpose-bred. The Company continues to care for the Cambodia-sourced non-human primates from certain shipments in the United States. The carrying value of the inventory related to these shipments is approximately $27 million as of June 29, 2024, which reflects the value of the shipments in accordance with our inventory accounting policy. On May 16, 2023, the Company received an inquiry from the Enforcement Division of the U.S. Securities and Exchange Commission (SEC) requesting it to voluntarily provide information, subsequently augmented with a document subpoena and additional inquiries, primarily related to the sourcing of non-human primates and related disclosures, and the Company is cooperating with these requests. We are not able to predict what action, if any, might be taken in the future by the DOJ, USFWS, SEC or other governmental authorities as a result of the investigations. None of the DOJ, USFWS or SEC has provided the Company with any specific timeline or indication as to when these investigations or, specific to the DOJ and USFWS, discussions regarding future processes and procedures, will be concluded or resolved. The Company cannot predict the timing, outcome or possible impact of the investigations, including without limitation any potential fines, penalties or liabilities. For our assessment of risk factors surrounding the aforementioned matter refer to Item 1A, “Risk Factors” and Item 3, “Legal Proceedings” of our Annual Report on Form 10-K for fiscal year 2023.

Recent Acquisitions

Our strategy is to augment internal growth of existing businesses with complementary acquisitions. Our recent acquisitions are described below.

Fiscal Year 2023 Acquisitions

On November 30, 2023, we completed our acquisition of an additional 41% equity interest of Noveprim Group (“Noveprim”), a leading provider of non-human primates (“NHPs”) used for biomedical, pharmaceutical and toxicological research purposes, resulting in a 90% controlling interest. The acquisition strengthens and diversifies the supply chain for our DSA segment. We had previously acquired a 49% equity stake in 2022 for $90.0 million up-front and additional future contingent payments up to $5.0 million based on future performance. The total preliminary purchase price for the Noveprim acquisition is $392.4 million, which includes $144.6 million additional cash paid for the 41% equity interest, elimination of historical activity and intercompany balances of $209.5 million which includes a remeasurement gain on the 49% equity investment of $113.0 million, contingent consideration of $33.3 million, deferred purchase price of $12.0 million payable from 2024 through 2027, offset by estimated post-closing adjustments for working capital of $7.0 million. The purchase price reflected a preliminary agreement with seller on working capital and debt, which was adjusted from $13.8 million to $7.0 million during the quarter ended June 29, 2024. As a result of measurement period adjustments to the purchase price, goodwill and remeasurement gains on the previous 49% equity investment for the quarter ended June 29, 2024, were increased by $17.6 million and $9.8 million, respectively. The acquisition was funded through a combination of available cash and proceeds from our Credit Facility. This business is reported as part of our DSA reportable segment for NHPs vertically integrated into our Safety Assessment supply chain and the RMS reportable segment for NHPs sold to third party customers.

On January 27, 2023, we acquired SAMDI Tech, Inc., (SAMDI), a leading provider of high-quality, label-free high-throughput screening (HTS) solutions for drug discovery research. The acquisition of SAMDI will provide clients with seamless access to the premier, label-free HTS MS platform and create a comprehensive, library of drug discovery solutions. The purchase price of SAMDI was $62.8 million, inclusive of a 20% strategic equity interest previously owned by us. The acquisition was funded through a combination of available cash and proceeds from our Credit Facility. This business is reported as part of our DSA reportable segment.

Fiscal Quarters

Our fiscal year is typically based on 52-weeks, with each quarter composed of 13 weeks ending on the last Saturday on, or closest to, March 31, June 30, September 30, and December 31. A 53rd week in the fourth quarter of the fiscal year is occasionally necessary to align with a December 31 calendar year-end.

Global Market Environment

We are seeing a more cautious spending environment from our client base, principally global biopharmaceutical and biotechnology clients within our DSA segment, as they reassess their budgets, reprioritize their drug pipelines, and manage their cost structures. DSA backlog decreased to $2.2 billion as of June 29, 2024 from $2.5 billion as of December 30, 2023. We will continue to monitor the market trends carefully for potential impacts to our operating and financial results.

In response to recent trends observed, we have undertaken and will continue to implement restructuring actions at various locations across North America, Europe and Asia. This includes workforce right-sizing actions, resulting in severance and transition costs; and costs related to the consolidation of facilities, resulting in asset impairment, accelerated depreciation, and other site consolidation charges.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

During fiscal year 2023, we began taking restructuring actions as a result of these emerging business trends. We incurred restructuring charges of $18.0 million and $35.0 million during the three and six months ended June 29, 2024, and approximately $65 million during fiscal year 2023 through June 29, 2024. We expect that these effectuated actions as well as other upcoming planned actions will result in excess of $150 million of cost savings on an annualized basis, of which approximately $100 million impact fiscal year 2024. Future initiatives beyond these actions are expected to include a multi-year strategy to optimize our global footprint to drive greater operating efficiency. These future initiatives are in the process of being finalized and quantified and the associated costs and savings associated are not included in the above totals.

Results of Operations

Consolidated Results of Operations and Liquidity

Revenue for three months ended June 29, 2024 decreased $33.8 million, or 3.2%, to $1,026.1 million compared to $1,059.9 million in the corresponding period in 2023. Revenue for the six months ended June 29, 2024 decreased $51.6 million, or 2.5%, to $2,037.7 million compared to $2,089.3 million in the corresponding period in 2023. The decreases in revenue were primarily due to our DSA business which experienced lower volume; partially offset by higher revenue within our Manufacturing businesses and the recent acquisition of Noveprim when compared to the corresponding periods in 2023.

In the three months ended June 29, 2024, our operating income and operating income margin were $151.7 million and 14.8% respectively, compared with $164.9 million and 15.6% respectively, in the corresponding period of 2023. In the six months ended June 29, 2024, our operating income and operating income margin were $277.6 million and 13.6% respectively, compared with $332.8 million and 15.9%, respectively, in the corresponding period of 2023. The decrease in operating income and operating income margin for the three and six months ended June 29, 2024 was primarily due to lower revenue described above, higher operating costs across all businesses, and charges related to recent restructuring activities, including severance, asset impairments, and other site consolidation costs.

Net income attributable to common shareholders decreased to $90.0 million in the three months ended June 29, 2024, from $97.0 million in the corresponding period of 2023. Net income attributable to common shareholders decreased to $157.3 million in the six months ended June 29, 2024, from $200.2 million in the corresponding period of 2023. The decreases in net income attributable to common shareholders was due principally to the decreases in operating income described above.

During the six months ended June 29, 2024, our cash flows from operations was $323.4 million compared with $257.5 million for the same period in 2023. The increase was driven by improvements across our revenue related accounts, including trade receivables, deferred revenue, and customer deposits; reduced inventory purchases supporting our Safety Assessment business, and timing of vendor and supplier payments compared to the same period in 2023.

Three Months Ended June 29, 2024 Compared to the Three Months Ended July 1, 2023

Revenue and Operating Income

The following tables present consolidated revenue by type and by reportable segment:


	Three Months Ended
	June 29, 2024		July 1, 2023		$ change		% change
	(in thousands, except percentages)
Service revenue	$	842,900	$	874,891	$	(31,991)	(3.7)	%
Product revenue	183,217		185,046		(1,829)		(1.0)	%
Total revenue	$	1,026,117	$	1,059,937	$	(33,820)	(3.2)	%


	Three Months Ended
	June 29, 2024		July 1, 2023		$ change		% change		Impact of FX
	(in thousands, except percentages)
RMS	$	206,389	$	209,948	$	(3,559)	(1.7)	%	(0.5)	%
DSA	627,419		663,457		(36,038)		(5.4)	%	(0.1)	%
Manufacturing	192,309		186,532		5,777		3.1	%	(0.6)	%
Total revenue	$	1,026,117	$	1,059,937	$	(33,820)	(3.2)	%	(0.3)	%

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

The following table presents operating income by reportable segment:


	Three Months Ended
	June 29, 2024			July 1, 2023			$ change		% change		Impact of FX
	(in thousands, except percentages)
RMS	$	29,948		$	48,918		$	(18,970)	(38.8)	%	(0.7)	%
DSA	138,376			161,538			(23,162)		(14.3)	%	0.7	%
Manufacturing	37,230			24,403			12,827		52.6	%	(1.6)	%
Unallocated corporate	(53,902)			(69,914)			16,012		(22.9)	%	(0.1)	%
Total operating income	$	151,652		$	164,945		$	(13,293)	(8.1)	%	0.2	%
Operating income % of revenue	14.8		%	15.6		%			(80) bps

The following presents and discusses our consolidated financial results by each of our reportable segments:

RMS


	Three Months Ended
	June 29, 2024			July 1, 2023			$ change		% change		Impact of FX
	(in thousands, except percentages)
Revenue	$	206,389		$	209,948		$	(3,559)	(1.7)	%	(0.5)	%
Cost of revenue (excluding amortization of intangible assets)	142,942			127,888			15,054		11.8	%
Selling, general and administrative	27,597			27,653			(56)		(0.2)	%
Amortization of intangible assets	5,902			5,489			413		7.5	%
Operating income	$	29,948		$	48,918		$	(18,970)	(38.8)	%	(0.7)	%
Operating income % of revenue	14.5		%	23.3		%			(880) bps

RMS revenue decreased $3.6 million due primarily to the combination of lower volume from Cell Solutions product revenue, Insourcing Solutions services revenue, and large research models product revenue in China, and the effect of changes in foreign currency exchange rates; partially offset by higher small research model product revenue in all geographic regions and the recent acquisition of Noveprim, which contributed $5.8 million to large research model product revenue.

RMS operating income decreased $19.0 million compared to the corresponding period in 2023. RMS operating income as a percentage of revenue for the three months ended June 29, 2024 was 14.5%, a decrease of 880 bps from 23.3% for the corresponding period in 2023. Operating income and operating income as a percentage of revenue decreased primarily due to the lower revenue described above, higher amortization related to acquisitions, including an inventory step up recorded in cost of revenue from the Noveprim acquisition, and higher site consolidation and asset impairment charges related to recent restructuring activities.

DSA


	Three Months Ended
	June 29, 2024			July 1, 2023			$ change		% change		Impact of FX
	(in thousands, except percentages)
Revenue	$	627,419		$	663,457		$	(36,038)	(5.4)	%	(0.1)	%
Cost of revenue (excluding amortization of intangible assets)	418,964			420,551			(1,587)		(0.4)	%
Selling, general and administrative	54,479			63,709			(9,230)		(14.5)	%
Amortization of intangible assets	15,600			17,659			(2,059)		(11.7)	%
Operating income	$	138,376		$	161,538		$	(23,162)	(14.3)	%	0.7	%
Operating income % of revenue	22.1		%	24.3		%			(220) bps

DSA revenue decreased $36.0 million due primarily to decreased revenue in our Safety Assessment and Discovery Services businesses due to decreased volume, the impact of a recently divested site related to our Safety Assessment business, which decreased revenue by $2.3 million, and the effect of changes in foreign currency exchange rates.

DSA operating income decreased $23.2 million during the three months ended June 29, 2024 compared to the corresponding period in 2023. DSA operating income as a percentage of revenue for the three months ended June 29, 2024 was 22.1%, a

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

decrease of 220 bps from 24.3% for the corresponding period in 2023. Operating income and operating income as a percentage of revenue decreased primarily due to the lower revenue described above, an adjustment to contingent consideration related to the acquisition of Noveprim, and higher severance, site consolidation, and asset impairment charges related to recent restructuring activities.

Manufacturing


	Three Months Ended
	June 29, 2024			July 1, 2023			$ change		% change		Impact of FX
	(in thousands, except percentages)
Revenue	$	192,309		$	186,532		$	5,777	3.1	%	(0.6)	%
Cost of revenue (excluding amortization of intangible assets)	110,498			112,522			(2,024)		(1.8)	%
Selling, general and administrative	33,813			38,481			(4,668)		(12.1)	%
Amortization of intangible assets	10,768			11,126			(358)		(3.2)	%
Operating income	$	37,230		$	24,403		$	12,827	52.6	%	(1.6)%
Operating income % of revenue	19.4		%	13.1		%			630 bps

Manufacturing revenue increased $5.8 million due primarily to increased revenue in both our Biologics Solutions and Microbial Solutions businesses, driven by increased demand for Biologics Testing, and CDMO services, and higher Microbial Solutions endotoxin product revenue; partially offset by the effect of changes in foreign currency exchange rates.

Manufacturing operating income increased $12.8 million during the three months ended June 29, 2024 compared to the corresponding period in 2023. Manufacturing operating income as a percentage of revenue for the three months ended June 29, 2024 was 19.4%, an increase of 630 bps from 13.1% for the corresponding period in 2023. Operating income and operating income as a percentage of revenue increased primarily due to the higher revenue described above, improved operating leverage, and the absence of legal costs from an environmental litigation related to the Microbial Solutions business incurred during the three months ended July 1, 2023.

Unallocated Corporate


	Three Months Ended
	June 29, 2024			July 1, 2023			$ change		% change		Impact of FX
	(in thousands, except percentages)
Unallocated corporate	$	53,902		$	69,914		$	(16,012)	(22.9)	%	(0.1)	%
Unallocated corporate % of revenue	5.3		%	6.6		%			(130) bps

Unallocated corporate costs consist of selling, general and administrative expenses that are not directly related or allocated to the reportable segments. The decrease in unallocated corporate costs of $16.0 million, or 22.9%, compared to the corresponding period in 2023 is primarily related to reduction in compensation expenses, timing of digital investments and acquisition related costs. Costs as a percentage of revenue for the three months ended June 29, 2024 was 5.3%, a decrease of 130 bps from 6.6% for the corresponding period in 2023.

Other Income (Expense)











	Three Months Ended
	June 29, 2024		July 1, 2023		$ change		% change
	(in thousands, except percentages)
Other income (expense):
Interest income	$	3,010	$	1,426	$	1,584	111.1	%
Interest expense	(32,769)		(35,044)		2,275		(6.5)	%
Other income (expense), net	(2,240)		(2,663)		423		(15.9)	%
Total other expense, net	$	(31,999)	$	(36,281)	$	4,282	(11.8)	%

Interest income for the three months ended June 29, 2024 was $3.0 million, an increase of $1.6 million, or 111.1%, driven primarily from higher interest rates and interest earning asset balances.

Interest expense for the three months ended June 29, 2024 was $32.8 million, a decrease of $2.3 million, or 6.5%, compared to $35.0 million in the corresponding period in 2023. The decrease was due primarily to lower debt balances as we continue to pay down on our revolving credit facility.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

Income Taxes


	Three Months Ended
	June 29, 2024			July 1, 2023			$ change		% change
	(in thousands, except percentages)
Provision for income taxes	$	25,392		$	29,221		$	(3,829)	(13.1)	%
Effective tax rate	21.2		%	22.7		%			(150) bps

Income tax expense for the three months ended June 29, 2024 was $25.4 million, a decrease of $3.8 million compared to $29.2 million for the corresponding period in 2023. Our effective tax rate was 21.2% for the three months ended June 29, 2024 compared to 22.7% for the corresponding period in 2023. The decrease was primarily attributable to an increase in non-taxable remeasurement gains on previous equity investment in Noveprim.

Six Months Ended June 29, 2024 Compared to Six Months Ended July 1, 2023

Revenue and Operating Income

The following tables present consolidated revenue by type and by reportable segment:


	Six Months Ended
	June 29, 2024		July 1, 2023		$ change		% change
	(in thousands, except percentages)
Service revenue	$	1,659,762	$	1,732,257	$	(72,495)	(4.2)	%
Product revenue	377,915		357,053		20,862		5.8	%
Total revenue	$	2,037,677	$	2,089,310	$	(51,633)	(2.5)	%


	Six Months Ended
	June 29, 2024		July 1, 2023		$ change		% change		Impact of FX
	(in thousands, except percentages)
RMS	$	427,296	$	409,714	$	17,582	4.3	%	(0.4)	%
DSA	1,232,871		1,325,810		(92,939)		(7.0)	%	0.3	%
Manufacturing	377,510		353,786		23,724		6.7	%	(0.2)	%
Total revenue	$	2,037,677	$	2,089,310	$	(51,633)	(2.5)	%	0.0	%

The following table presents operating income by reportable segment:


	Six Months Ended
	June 29, 2024			July 1, 2023			$ change		% change		Impact of FX
	(in thousands, except percentages)
RMS	$	73,097		$	89,327		$	(16,230)	(18.2)	%	(0.7)	%
DSA	253,215			332,969			(79,754)		(24.0)	%	0.3	%
Manufacturing	70,911			26,509			44,402		167.5	%	(1.1)	%
Unallocated corporate	(119,594)			(115,968)			(3,626)		3.1	%	0.1	%
Total operating income	$	277,629		$	332,837		$	(55,208)	(16.6)	%	—	%
Operating income % of revenue	13.6		%	15.9		%			(230) bps

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

The following presents and discusses our consolidated financial results by each of our reportable segments:

RMS


	Six Months Ended
	June 29, 2024			July 1, 2023			$ change		% change		Impact of FX
	(in thousands, except percentages)
Revenue	$	427,296		$	409,714		$	17,582	4.3	%	(0.4)	%
Cost of revenue (excluding amortization of intangible assets)	283,867			254,692			29,175		11.5	%
Selling, general and administrative	58,490			54,711			3,779		6.9	%
Amortization of intangible assets	11,842			10,984			858		7.8	%
Operating income	$	73,097		$	89,327		$	(16,230)	(18.2)	%	(0.7)	%
Operating income % of revenue	17.1		%	21.8		%			(470) bps

RMS revenue increased $17.6 million due primarily to the recent acquisition of Noveprim, which contributed $20.1 million to large research product revenue, and higher small research models product revenues; partially offset by lower Cell Solutions product revenue and large research models product revenue in China, and the effect of changes in foreign currency exchange rates.

RMS operating income decreased $16.2 million compared to the corresponding period in 2023. RMS operating income as a percentage of revenue for the six months ended June 29, 2024 was 17.1%, a decrease of 470 bps from 21.8% for the corresponding period in 2023. Operating income and operating income as a percentage of revenue decreased principally due to higher severance, site consolidation and asset impairment charges related to recent restructuring activities, and higher amortization related to acquisitions, including an inventory step up recorded in cost of revenue from the Noveprim acquisition.

DSA


	Six Months Ended
	June 29, 2024			July 1, 2023			$ change		% change		Impact of FX
	(in thousands, except percentages)
Revenue	$	1,232,871		$	1,325,810		$	(92,939)	(7.0)	%	0.3	%
Cost of revenue (excluding amortization of intangible assets)	836,876			832,074			4,802		0.6	%
Selling, general and administrative	111,338			125,707			(14,369)		(11.4)	%
Amortization of intangible assets	31,442			35,060			(3,618)		(10.3)	%
Operating income	$	253,215		$	332,969		$	(79,754)	(24.0)	%	0.3	%
Operating income % of revenue	20.5		%	25.1		%			(460) bps

DSA revenue decreased $92.9 million due primarily to decreased revenue in our Safety Assessment and Discovery Services businesses due to decreased volume, as well as the impact of a recently divested site related to our Safety Assessment business, which decreased revenue by $5.2 million; partially offset by the effect of changes in foreign currency exchange rates.

DSA operating income decreased $79.8 million compared to the corresponding period in 2023. DSA operating income as a percentage of revenue for the six months ended June 29, 2024 was 20.5%, a decrease of 460 bps from 25.1% for the corresponding period in 2023. Operating income and operating income as a percentage of revenue decreased primarily due to the lower revenue described above, higher operating and staffing costs, an adjustment to contingent consideration related to the acquisition of Noveprim, and higher severance, site consolidation, and asset impairment costs related to recent restructuring activities.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

Manufacturing


	Six Months Ended
	June 29, 2024			July 1, 2023			$ change		% change		Impact of FX
	(in thousands, except percentages)
Revenue	$	377,510		$	353,786		$	23,724	6.7	%	(0.2)	%
Cost of revenue (excluding amortization of intangible assets)	218,378			225,914			(7,536)		(3.3)	%
Selling, general and administrative	66,660			78,218			(11,558)		(14.8)	%
Amortization of intangible assets	21,561			23,145			(1,584)		(6.8)	%
Operating income	$	70,911		$	26,509		$	44,402	167.5	%	(1.1)	%
Operating income % of revenue	18.8		%	7.5		%			1,130 bps

Manufacturing revenue increased $23.7 million due primarily to increased revenue in both our Biologics Solutions and Microbial Solutions businesses, driven by increased demand for Biologics Testing and CDMO services, and higher Microbial Solutions endotoxin product revenue; partially offset by the effect of changes in foreign currency exchange rates.

Manufacturing operating income increased $44.4 million compared to the corresponding period in 2023. Manufacturing operating income as a percentage of revenue for the six months ended June 29, 2024 was 18.8%, an increase of 1,130 bps from 7.5% for the corresponding period in 2023. Operating income and operating income as a percentage of revenue increased primarily due to the higher revenue described above, along with improved operating leverage, and the absence of legal costs from an environmental litigation related to the Microbial Solutions business incurred during the six months ended July 1, 2023.

Unallocated Corporate


	Six Months Ended
	June 29, 2024			July 1, 2023			$ change		% change		Impact of FX
	(in thousands, except percentages)
Unallocated corporate	$	119,594		$	115,968		$	3,626	3.1	%	0.1	%
Unallocated corporate % of revenue	5.9		%	5.6		%			30 bps

Unallocated corporate costs consist of selling, general and administrative expenses that are not directly related or allocated to the reportable segments. The increase in unallocated corporate costs of $3.6 million, or 3.1%, compared to the corresponding period in 2023 is primarily related to higher compensation related expenses, including employee fringe related costs and severance costs, partially offset by lower acquisition related expenses. Costs as a percentage of revenue for the six months ended June 29, 2024 were 5.9%, an increase of 30 bps from 5.6% for the corresponding period in 2023.

Other Income (Expense)











	Six Months Ended
	June 29, 2024		July 1, 2023		$ change		% change
	(in thousands, except percentages)
Other income (expense):
Interest income	$	5,212	$	2,232	$	2,980	133.5	%
Interest expense	(67,770)		(69,424)		1,654		(2.4)	%
Other income (expense), net	3,593		(5,940)		9,533		(160.5)	%
Total other expense, net	$	(58,965)	$	(73,132)	$	14,167	(19.4)	%

Interest income for the six months ended June 29, 2024 was $5.2 million, an increase of $3.0 million, or 133.5%, driven primarily from higher interest rates.

Interest expense for the six months ended June 29, 2024 was $67.8 million, a decrease of $1.7 million, or 2.4%, compared to $69.4 million in the corresponding period in 2023. The decrease was due primarily to lower debt balances as we continue to pay down our revolving credit facility.

Other income, net for the six months ended June 29, 2024 was $3.6 million, an increase of $9.5 million, or 160.5%, compared to Other expense, net of $5.9 million for the corresponding period in 2023. The increase was due primarily to venture capital investment gains of $1.8 million as compared to losses of $8.4 million in the corresponding period in 2023.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

Income Taxes


	Six Months Ended
	June 29, 2024			July 1, 2023			$ change		% change
	(in thousands, except percentages)
Provision for income taxes	$	49,921		$	56,308		$	(6,387)	(11.3)	%
Effective tax rate	22.8		%	21.7		%			110 bps

Income tax expense for the six months ended June 29, 2024 was $49.9 million, a decrease of $6.4 million compared to $56.3 million for the corresponding period in 2023. Our effective tax rate was 22.8% for the six months ended June 29, 2024 compared to 21.7% for the corresponding period in 2023. The increase in our effective tax rate in the six months ended June 29, 2024 compared to the corresponding period in 2023 was primarily attributable to decreased tax benefits from stock-based compensation deductions in the six months ended June 29, 2024.

Our global operations make the effective tax rate sensitive to significant tax law changes. Several countries where we operate have enacted legislation implementing the Organization for Economic Cooperation and Development’s (OECD) international tax framework, including the Pillar II global minimum tax rate with effect from January 1, 2024 or later. We continue to monitor future legislation on Pillar II, however, the Pillar II associated tax expense accrued for the six months ended June 29, 2024, is not material to the unaudited consolidated financial statements.

Liquidity and Capital Resources

Liquidity and Cash Flows

We currently require cash to fund our working capital needs, capital expansion, acquisitions, debt payments, lease, venture capital investment, restructuring initiatives, and pension obligations. Our principal sources of liquidity have been our cash flows from operations, supplemented by long-term borrowings. Based on our current business plan, we believe that our existing funds, when combined with cash generated from operations and our access to financing resources, are sufficient to fund our operations for the foreseeable future.

The following table presents our cash, cash equivalents and short-term investments:


	June 29, 2024		December 30, 2023
	(in thousands)
Cash and cash equivalents:
Held in U.S. entities	$	5,190	$	2,234
Held in non-U.S. entities	174,023		274,537
Total cash and cash equivalents	179,213		276,771
Short-term investments:
Held in non-U.S. entities	26,709		68
Total cash, cash equivalents and short-term investments	$	205,922	$	276,839

The following table presents our net cash provided by operating activities:


	Six Months Ended
	June 29, 2024		July 1, 2023
	(in thousands)
Net income	$	168,743	$	203,397
Adjustments to reconcile net income to net cash provided by operating activities	214,104		197,185
Changes in assets and liabilities	(59,424)		(143,077)
Net cash provided by operating activities	$	323,423	$	257,505

Net cash provided by cash flows from operating activities represents the cash receipts and disbursements related to all of our activities other than investing and financing activities. Operating cash flow is derived by adjusting our net income for (1) non-cash operating items such as depreciation and amortization, stock-based compensation, and other financing costs, deferred income taxes, gains and/or losses on venture capital and strategic equity investments, gains and/or losses on divestitures, contingent consideration, as well as (2) changes in operating assets and liabilities, which reflect timing differences between the receipt and payment of cash associated with transactions and when they are recognized in our results of operations. For the six months ended June 29, 2024, compared to the six months ended July 1, 2023, the increase in net cash provided by operating activities was primarily driven by improvements across our revenue related accounts, including trade receivables, deferred

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

revenue, and customer deposits; reduced inventory purchases supporting our Safety Assessment business, and timing of vendor and supplier payments compared to the same period in 2023.

The following table presents our net cash used in investing activities:


	Six Months Ended
	June 29, 2024		July 1, 2023
	(in thousands)
Acquisition of businesses and assets, net of cash acquired	$	(5,479)	$	(50,166)
Capital expenditures	(118,630)		(174,258)
Investments, net	(23,179)		(19,746)

Other, net	(370)		(1,057)
Net cash used in investing activities	$	(147,658)	$	(245,227)

For the six months ended June 29, 2024, the primary use of cash used in investing activities related to capital expenditures to support the growth of the business, an immaterial asset acquisition, and investments in certain venture capital and strategic equity investments.

For the six months ended July 1, 2023, the primary use of cash used in investing activities related to capital expenditures to support the growth of the business, the acquisition of SAMDI, and investments in certain venture capital and strategic equity investments.

The following table presents our net cash used in financing activities:


	Six Months Ended
	June 29, 2024		July 1, 2023
	(in thousands)
Proceeds from long-term debt and revolving credit facility	$	741,200	$	281,796
Proceeds from exercises of stock options	22,331		15,719
Payments on long-term debt, revolving credit facility, and finance lease obligations	(987,344)		(317,049)
Purchase of treasury stock	(18,265)		(23,978)

Purchases of additional equity interests, net	(12,000)		—
Payment of contingent considerations	—		(2,711)
Other, net	(13,434)		—
Net cash used in financing activities	$	(267,512)	$	(46,223)

For the six months ended June 29, 2024, net cash used in financing activities was primarily driven by the following activity:

•Net repayments of $252.4 million from our Credit Facility

•Net proceeds from exercises of employee stock options of $22.3 million

•Treasury stock purchases of $18.3 million made due to the netting of common stock upon vesting of stock-based awards in order to satisfy individual statutory tax withholding requirements

For the six months ended July 1, 2023, net cash used in financing activities was primarily driven by the following activity:

•Net repayments of $33 million from our Credit Facility

•Net proceeds from exercises of employee stock options of $15.7 million

•Treasury stock purchases of $24.0 million made due to the netting of common stock upon vesting of stock-based awards in order to satisfy individual statutory tax withholding requirements, and

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

Financing and Market Risk

We are exposed to market risk from changes in interest rates and currency exchange rates, which could affect our future results of operations and financial condition. We manage our exposure to these risks through our regular operating and financing activities.

Amounts outstanding under our Credit Facility and our Senior Notes were as follows:


	June 29, 2024		December 30, 2023
	(in thousands)
Revolving facility	$	879,498	$	1,129,243
4.25% Senior Notes due 2028	500,000		500,000
3.75% Senior Notes due 2029	500,000		500,000
4.00% Senior Notes due 2031	500,000		500,000
Total	$	2,379,498	$	2,629,243

The Credit Facility has a maturity date of April 2026, with no required scheduled payment before that date. The interest rates applicable to the Credit Facility are equal to (A) for revolving loans denominated in U.S. dollars, at our option, either the base rate (which is the higher of (1) the prime rate, (2) the federal funds rate plus 0.50%, or (3) the one-month adjusted term SOFR rate plus 1%) or the adjusted term SOFR rate, (B) for revolving loans denominated in euros, the adjusted EURIBOR rate and (C) for revolving loans denominated in sterling, the daily simple SONIA rate, in each case, plus an interest rate margin based upon our leverage ratio.

We have an interest rate swap with a notional amount of $500 million to manage interest rate fluctuation related to our floating rate borrowings under the Credit Facility, at a fixed rate of 4.65% on our swap maturing November 2, 2024.

Our off-balance sheet commitments related to our outstanding letters of credit as of June 29, 2024 and December 30, 2023 were $21.2 million and $21.6 million, respectively.

Foreign Currency Exchange Rate Risk

We operate on a global basis and have exposure to foreign currency exchange rate fluctuations for our financial position, results of operations, and cash flows.

While the financial results of our global activities are reported in U.S. dollars, our foreign subsidiaries typically conduct their operations in their respective local currency. The principal functional currencies of the Company’s foreign subsidiaries are the Euro, British Pound and Canadian Dollar. During the six months ended June 29, 2024, the most significant drivers of foreign currency translation adjustment the Company recorded as part of Other comprehensive income (loss) were the Euro, Mauritian Rupee, Canadian Dollar, and Swedish Krona.

Fluctuations in the foreign currency exchange rates of the countries in which we do business will affect our financial position, results of operations, and cash flows. As the U.S. dollar strengthens against other currencies, the value of our non-U.S. revenue, expenses, assets, liabilities, and cash flows will generally decline when reported in U.S. dollars. The impact to net income as a result of a U.S. dollar strengthening will be partially mitigated by the value of non-U.S. expenses, which will decline when reported in U.S. dollars. As the U.S. dollar weakens versus other currencies, the value of the non-U.S. revenue, expenses, assets, liabilities, and cash flows will generally increase when reported in U.S. dollars. For the six months ended June 29, 2024, our revenue would have decreased by $65.2 million, and our operating income would have decreased by $3.6 million, if the U.S. dollar exchange rate had strengthened by 10%, with all other variables held constant.

We attempt to minimize this exposure by using certain financial instruments in accordance with our overall risk management and our hedge policy. We do not enter into speculative derivative agreements.

Repurchases of Common Stock

During the six months ended June 29, 2024, we did not repurchase any shares under our authorized stock repurchase program. As of June 29, 2024, we had $129.1 million remaining on the authorized $1.3 billion stock repurchase program. On August 2, 2024, our Board of Directors approved a new stock repurchase authorization of $1.0 billion. This new authorization replaces a prior stock repurchase authorization of $1.3 billion that had $129.1 million remaining on the plan when it was terminated.

Additionally, our stock-based compensation plans permit the netting of common stock upon vesting of restricted stock, restricted stock units, and performance share units in order to satisfy individual statutory tax withholding requirements. During the six months ended June 29, 2024, we acquired 0.1 million shares for $18.3 million through such netting.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

Critical Accounting Policies and Estimates

Our discussion and analysis of our financial condition and results of operations is based upon our consolidated financial statements prepared in accordance with generally accepted accounting principles in the U.S. The preparation of these financial statements requires us to make certain estimates and assumptions that may affect the reported amounts of assets and liabilities, the reported amounts of revenues and expenses during the reported periods, and the related disclosures. These estimates and assumptions are monitored and analyzed by us for changes in facts and circumstances, and material changes in these estimates could occur in the future. We base our estimates on our historical experience, trends in the industry, and various other factors that are believed to be reasonable under the circumstances. Actual results may differ from our estimates under different assumptions or conditions.

We believe that the application of our accounting policies, each of which require significant judgments and estimates on the part of management, are the most critical to aid in fully understanding and evaluating our reported financial results. Our significant accounting policies are more fully described in Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations” of our Annual Report on Form 10-K for fiscal year 2023 as filed with the SEC on February 14, 2024. There have been no changes in the Company’s critical accounting policies during the six months ended June 29, 2024.

Recent Accounting Pronouncements

For a discussion of recent accounting pronouncements please refer to Note 1, “Basis of Presentation,” in this Quarterly Report on Form 10-Q. Other than as discussed in Note 1, “Basis of Presentation,” we did not adopt any other new accounting pronouncements during the six months ended June 29, 2024 that had a significant effect on our unaudited condensed consolidated financial statements included in this Quarterly Report on Form 10-Q.

Item 3. Quantitative and Qualitative Disclosures about Market Risk

The Company’s exposure to market risk from changes in interest rates and currency exchange rates has not changed materially from its exposure discussed in the Company’s Annual Report on Form 10-K for the fiscal year ended December 30, 2023 as filed with the SEC on February 14, 2024. Our interest rate and currency exchange rate risks are fully described in Item 7, “Management’s Discussion and Analysis of Financial Condition and Results of Operations - Liquidity and Capital Resources” of our Annual Report on Form 10-K for fiscal year 2023 and in Item 2, “Management’s Discussion and Analysis of Financial Condition and Results of Operations - Liquidity and Capital Resources” herein.

Item 4. Controls and Procedures

(a) Evaluation of Disclosure Controls and Procedures

Based on their evaluation, required by paragraph (b) of Rules 13a-15 or 15d-15, promulgated by the Securities Exchange Act of 1934, as amended (Exchange Act), the Company’s principal executive officer and principal financial officer have concluded that the Company’s disclosure controls and procedures, as defined in Rules 13a-15(e) and 15d-15(e) of the Exchange Act, are effective, at a reasonable assurance level, as of June 29, 2024, to ensure that information required to be disclosed by the Company in reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in Securities and Exchange Commission rules and forms. Disclosure controls and procedures include, without limitation, controls and procedures designed to ensure that information required to be disclosed by the Company in the reports that it files or submits under the Exchange Act is accumulated and communicated to the Company’s management, including its principal executive and principal financial officers, or persons performing similar functions, as appropriate to allow timely decisions regarding required disclosure. In designing and evaluating the disclosure controls and procedures, our management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurances of achieving the desired control objectives, and management necessarily was required to apply its judgment in designing and evaluating the controls and procedures.

(b) Changes in Internal Controls Over Financial Reporting

There were no material changes in the Company’s internal control over financial reporting identified in connection with the evaluation required by paragraph (d) of the Exchange Act Rules 13a-15 or 15d-15 that occurred during the quarter ended June 29, 2024 that materially affected, or were reasonably likely to materially affect, the Company’s internal control over financial reporting.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

PART II. OTHER INFORMATION

Item 1. Legal Proceedings

On February 16, 2023, the Company was informed by the U.S. Department of Justice (DOJ) that in conjunction with the U.S. Fish and Wildlife Service (USFWS), it had commenced an investigation into the Company’s conduct regarding several shipments of non-human primates from Cambodia. On February 17, 2023 the Company received a grand jury subpoena requesting certain documents related to such investigation. The Company is aware of a parallel civil investigation being undertaken by the DOJ and USFWS. The Company is cooperating with the DOJ and the USFWS and believes that the concerns raised with respect to the Company’s conduct are without merit. The Company maintains a global supplier onboarding and oversight program incorporating risk-based due diligence, auditing, and monitoring practices to help ensure the quality of our supplier relationships and compliance with applicable U.S. and international laws and regulations, and has operated under the belief that all shipments of non-human primates it received satisfied the material requirements, documentation and related processes and procedures of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) documentation and related processes and procedures, which guides the release of each import by USFWS. Notwithstanding our efforts and good-faith belief, in connection with the civil investigation, the Company has voluntarily suspended future shipments of non-human primates from Cambodia to the United States until such time that the Company and USFWS can agree upon and implement additional procedures to reasonably ensure that non-human primates imported from Cambodia are purpose-bred. The Company continues to care for the Cambodia-sourced non-human primates from certain shipments in the United States. The carrying value of the inventory related to these shipments is approximately $27 million as of June 29, 2024, which reflects the value of the shipments in accordance with the Company’s inventory accounting policy. On May 16, 2023, the Company received an inquiry from the Enforcement Division of the U.S. Securities and Exchange Commission (SEC) requesting it to voluntarily provide information, subsequently augmented with a document subpoena and additional inquiries, primarily related to the sourcing of non-human primates and related disclosures, and the Company is cooperating with these requests. We are not able to predict what action, if any, might be taken in the future by the DOJ, USFWS, SEC or other governmental authorities as a result of the investigations. None of the DOJ, USFWS or SEC has provided the Company with any specific timeline or indication as to when these investigations or, specific to the DOJ and USFWS, discussions regarding future processes and procedures, will be concluded or resolved. The Company cannot predict the timing, outcome or possible impact of the investigations, including without limitation any potential fines, penalties or liabilities.

A putative securities class action (Securities Class Action) was filed on May 19, 2023 against the Company and a number of its current/former officers in the United States District Court for the District of Massachusetts. On August 31, 2023, the court appointed the State Teachers Retirement System of Ohio as lead plaintiff. An amended complaint was filed on November 14, 2023 that, among other things, included only James Foster, the Chief Executive Officer and David R. Smith, the former Chief Financial Officer as defendants along with the Company. The amended complaint asserts claims under §§ 10(b) and 20(a) of the Securities Exchange Act of 1934 (the Exchange Act) on behalf of a putative class of purchasers of Company securities from May 5, 2020 through February 21, 2023, alleging that certain of the Company’s disclosures about its practices with respect to the importation of non-human primates made during the putative class period were materially false or misleading. On July 1, 2024, the court dismissed the complaint, denied the plaintiff’s informal request for leave to amend, and entered judgment for defendants. On July 30, 2024 the plaintiff filed a notice of appeal. While the Company cannot predict the final outcome of this matter, it believes the class action to be without merit and plans to vigorously defend against it. The Company cannot reasonably estimate the maximum potential exposure or the range of possible loss in association with this matter.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

Item 1A. Risk Factors

In addition to the other information set forth in this report, you should carefully consider the factors discussed in Part I, “Item 1A. Risk Factors” in our Annual Report on Form 10-K for fiscal year 2023, which could materially affect our business, financial condition, and/or future results. The risks described in our Annual Report on Form 10-K are not the only risks we face. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial also may materially adversely affect our business, financial condition, and/or operating results. There have been no material changes to the risk factors set forth in our Annual Report on Form 10-K for fiscal year 2023 as filed with the SEC on February 14, 2024.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

The following table provides information relating to the purchases of shares of our common stock during the three months ended June 29, 2024.


	Total Number of Shares Purchased	Average Price Paid per Share		Total Number of Shares Purchased as Part of Publicly Announced Plans or Programs	Approximate Dollar Value of Shares That May Yet Be Purchased Under the Plans or Programs
					(in thousands)
March 31, 2024 to April 27, 2024	18	$	270.95	—	$	129,105
April 28, 2024 to May 25, 2024	923	232.69		—	129,105
May 26, 2024 to June 29, 2024	40,595	216.56		—	129,105
Total	41,536			—

Through June 29, 2024 our Board of Directors had authorized up to an aggregate amount of $1.3 billion for our stock repurchase program. During the three months ended June 29, 2024, we did not repurchase any shares of common stock under our stock repurchase program or in open market trading. As of June 29, 2024, we had $129.1 million remaining on the authorized stock repurchase program.

On August 2, 2024, our Board of Directors approved a new stock repurchase authorization of $1.0 billion. This new authorization replaces a prior stock repurchase authorization of $1.3 billion that had $129.1 million remaining on the plan when it was terminated.

Item 5. Other Information

During the quarter ended June 29, 2024, none of our officers or directors adopted or terminated any contract, instruction, or written plan for the purchase or sale of our securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act or any “non-Rule 10b5-1 trading arrangement” as defined in Item 408(c) of Regulation S-K.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

Item 6. Exhibits


(a) Exhibits			Description of Exhibits
31.1			Rule 13a-14(a)/15d-14(a) Certification of Chief Executive Officer
31.2			Rule 13a-14(a)/15d-14(a) Certification of Chief Financial Officer
32.1+			Certification of the Principal Executive Officer and the Principal Financial Officer required by Rule 13a-14(a) of 15d-14(a) of the Exchange Act
101.INS			eXtensible Business Reporting Language (XBRL) Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document
101.SCH			XBRL Taxonomy Extension Schema Document
101.CAL			XBRL Taxonomy Calculation Linkbase Document
101.DEF			XBRL Taxonomy Definition Linkbase Document
101.LAB			XBRL Taxonomy Label Linkbase Document
101.PRE			XBRL Taxonomy Presentation Linkbase Document

+ Furnished herein.

CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.


						CHARLES RIVER LABORATORIES INTERNATIONAL, INC.

			August 7, 2024			/s/ JAMES C. FOSTER
						James C. Foster Chairman, President and Chief Executive Officer

			August 7, 2024			/s/ FLAVIA H. PEASE
						Flavia H. Pease Corporate Executive Vice President and Chief Financial Officer

Exhibit 31.1

CERTIFICATION PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

AND RULE 13a-14(a)/15d-14(a) OF THE EXCHANGE ACT OF 1934

I, James C. Foster, Chairman, President and Chief Executive Officer of Charles River Laboratories International, Inc. (the registrant) certify that:

1. I have reviewed this quarterly report on Form 10-Q for the quarter ended June 29, 2024 of the registrant;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant's other certifying officers and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

a. designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

b. designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

c. evaluated the effectiveness of the registrant's disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures as of the end of the period covered by this report based on such evaluation; and

d. disclosed in this report any change in the registrant's internal control over financial reporting that occurred during the registrant's most recent fiscal quarter (the registrant's fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant's internal control over financial reporting; and

5. The registrant's other certifying officers and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant's auditors and the audit committee of the registrant's board of directors (or persons performing the equivalent functions):

a. all significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant's ability to record, process, summarize and report financial information; and

b. any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.


									/s/ James C. Foster
			August 7, 2024						James C. Foster Chairman, President and Chief Executive Officer Charles River Laboratories International, Inc.

Exhibit 31.2

CERTIFICATION PURSUANT TO

SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

AND RULE 13a-14(a)/15d-14(a) OF THE EXCHANGE ACT OF 1934

I, Flavia H. Pease, Corporate Executive Vice President and Chief Financial Officer of Charles River Laboratories International, Inc. (the registrant) certify that:

1. I have reviewed this quarterly report on Form 10-Q for the quarter ended June 29, 2024 of the registrant;

b. any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant's internal control over financial reporting.


									/s/ Flavia H. Pease
			August 7, 2024						Flavia H. Pease Corporate Executive Vice President and Chief Financial Officer Charles River Laboratories International, Inc.

Exhibit 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350,

AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the quarterly report on Form 10-Q for the quarter ended June 29, 2024 of Charles River Laboratories International, Inc. (the “Company”) as filed with the Securities and Exchange Commission on the date hereof (the “Report”), the undersigned, James C. Foster, Chairman, President and Chief Executive Officer of the Company, and Flavia H. Pease, Corporate Executive Vice President and Chief Financial Officer of the Company, each hereby certifies, to the best of his knowledge and pursuant to 18 U.S.C. Section 1350, that:

(1) the Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934 (the “Exchange Act”); and

(2) the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

/s/ James C. Foster

August 7, 2024

James C. Foster

Chairman, President and Chief Executive Officer

Charles River Laboratories International, Inc.

/s/ Flavia H. Pease

August 7, 2024

Flavia H. Pease

Corporate Executive Vice President and Chief Financial Officer

Charles River Laboratories International, Inc.

This certification shall not be deemed "filed" for any purpose, nor shall it be deemed to be incorporated by reference into any filing under the Securities Act of 1933 or the Exchange Act.

Cover Page - shares	6 Months Ended
Cover Page - shares	Jun. 29, 2024	Jul. 27, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 29, 2024
Document Transition Report	false
Entity File Number	001-15943
Entity Registrant Name	CHARLES RIVER LABORATORIES INTERNATIONAL, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	06-1397316
Entity Address, Address Line One	251 Ballardvale Street
Entity Address, City or Town	Wilmington
Entity Address, State or Province	MA
Entity Address, Postal Zip Code	01887
City Area Code	781
Local Phone Number	222-6000
Title of 12(b) Security	Common stock, $0.01 par value
Trading Symbol	CRL
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Smaller Reporting Company	false
Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		51,630,726
Entity Central Index Key	0001100682
Current Fiscal Year End Date	--12-28
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q2
Amendment Flag	false

CONDENSED CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Total revenue	$ 1,026,117	$ 1,059,937	$ 2,037,677	$ 2,089,310
Costs and expenses:
Cost of revenue (excluding amortization of intangible assets)	672,404	660,960	1,339,121	1,312,679
Selling, general and administrative	169,791	199,758	356,082	374,604
Amortization of intangible assets	32,270	34,274	64,845	69,190
Operating income	151,652	164,945	277,629	332,837
Other income (expense):
Interest income	3,010	1,426	5,212	2,232
Interest expense	(32,769)	(35,044)	(67,770)	(69,424)
Other income (expense), net	(2,240)	(2,663)	3,593	(5,940)
Income before income taxes	119,653	128,664	218,664	259,705
Provision for income taxes	25,392	29,221	49,921	56,308
Net income	94,261	99,443	168,743	203,397
Less: Net income attributable to noncontrolling interests	180	2,423	1,702	3,246
Net income available to Charles River Laboratories International, Inc.	94,081	97,020	167,041	200,151
Calculation of net income per share attributable to common shareholders of Charles River Laboratories International, Inc.
Net income available to Charles River Laboratories International, Inc.	94,081	97,020	167,041	200,151
Less: Adjustment of redeemable noncontrolling interest	301	0	702	0
Less: Incremental dividends attributable to noncontrolling interest holders	3,792	0	9,022	0
Net income available to Charles River Laboratories International, Inc. common shareholders	$ 89,988	$ 97,020	$ 157,317	$ 200,151
Net income attributable to common shareholders:
Basic (in dollars per share)	$ 1.75	$ 1.89	$ 3.06	$ 3.91
Diluted (in dollars per share)	$ 1.74	$ 1.89	$ 3.04	$ 3.90
Weighted-average number of common shares outstanding:
Basic (in shares)	51,551	51,216	51,494	51,157
Diluted (in shares)	51,846	51,467	51,810	51,382
Service
Total revenue	$ 842,900	$ 874,891	$ 1,659,762	$ 1,732,257
Costs and expenses:
Cost of revenue (excluding amortization of intangible assets)	577,383	578,099	1,155,547	1,143,576
Product
Total revenue	183,217	185,046	377,915	357,053
Costs and expenses:
Cost of revenue (excluding amortization of intangible assets)	$ 95,021	$ 82,861	$ 183,574	$ 169,103

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 94,261	$ 99,443	$ 168,743	$ 203,397
Other comprehensive income (loss):
Foreign currency translation adjustment	(21,678)	23,227	(84,518)	46,540
Amortization of net loss, settlement losses, and prior service benefit included in total cost for pension and other post-retirement benefit plans	342	174	686	344
Unrealized gains (losses) on hedging instruments	(396)	6,046	372	4,644
Other comprehensive income (loss), before income taxes	(21,732)	29,447	(83,460)	51,528
Less: Income tax expense (benefit) related to items of other comprehensive income	(2,027)	937	(7,500)	(101)
Comprehensive income, net of income taxes	74,556	127,953	92,783	255,026
Less: Comprehensive income (loss) related to noncontrolling interests, net of income taxes	265	78	(976)	1,087
Comprehensive income attributable to Charles River Laboratories International, Inc., net of income taxes	$ 74,291	$ 127,875	$ 93,759	$ 253,939

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) - USD ($) $ in Thousands	Jun. 29, 2024	Dec. 30, 2023
Current assets:
Cash and cash equivalents	$ 179,213	$ 276,771
Trade receivables and contract assets, net of allowances for credit losses of $24,951 and $25,722, respectively	762,221	780,375
Inventories	349,111	380,259
Prepaid assets	97,892	87,879
Other current assets	110,836	83,378
Total current assets	1,499,273	1,608,662
Property, plant and equipment, net	1,613,895	1,639,741
Venture capital and strategic equity investments	231,859	243,811
Operating lease right-of-use assets, net	386,147	394,029
Goodwill	3,079,693	3,095,045
Intangible assets, net	800,129	864,051
Deferred tax assets	36,109	40,279
Other assets	301,178	309,383
Total assets	7,948,283	8,195,001
Current liabilities:
Accounts payable	133,101	168,937
Accrued compensation	176,667	213,290
Deferred revenue	247,177	241,820
Accrued liabilities	192,156	227,825
Other current liabilities	198,418	203,210
Total current liabilities	947,519	1,055,082
Long-term debt, net and finance leases	2,409,380	2,647,147
Operating lease right-of-use liabilities	428,587	419,234
Deferred tax liabilities	165,183	191,349
Other long-term liabilities	224,520	223,191
Total liabilities	4,175,189	4,536,003
Commitments and contingencies (Notes 2, 11, 13, and 15)
Redeemable noncontrolling interest	46,076	56,722
Equity:
Preferred stock, $0.01 par value; 20,000 shares authorized; no shares issued and outstanding	0	0
Common stock, $0.01 par value; 120,000 shares authorized; 51,696 shares issued and 51,613 shares outstanding as of June 29, 2024, and 51,338 shares issued and outstanding as of December 30, 2023	517	513
Additional paid-in capital	1,956,629	1,905,578
Retained earnings	2,053,557	1,887,218
Treasury stock, at cost, 83 and zero shares, as of June 29, 2024 and December 30, 2023, respectively	(18,265)	0
Accumulated other comprehensive loss	(269,709)	(196,427)
Total Charles River Laboratories International, Inc. equity	3,722,729	3,596,882
Nonredeemable noncontrolling interests	4,289	5,394
Total equity	3,727,018	3,602,276
Total liabilities, noncontrolling interests and equity	$ 7,948,283	$ 8,195,001

CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - USD ($) $ in Thousands	Jun. 29, 2024	Dec. 30, 2023
Statement of Financial Position [Abstract]
Less: Allowance for credit losses	$ 24,951	$ 25,722
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares authorized (in shares)	20,000,000	20,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	120,000,000	120,000,000
Common stock, shares issued (in shares)	51,696,000	51,338,000
Common stock, shares outstanding (in shares)	51,613,000	51,338,000
Treasury stock, shares (in shares)	83,000	0

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023
Cash flows relating to operating activities
Net income	$ 168,743	$ 203,397
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	171,439	154,740
Stock-based compensation	33,325	29,730
Deferred income taxes	(13,073)	(16,555)
Long-lived asset impairment charges	14,250	10,453
(Gain) loss on venture capital & strategic equity investments, net	(6,305)	5,176
Provision for credit losses	4,719	9,849
Loss on divestitures, net	659	563
Other, net	9,090	3,229
Changes in assets and liabilities:
Trade receivables and contract assets, net	1,072	(48,249)
Inventories	9,750	(32,671)
Accounts payable	(6,436)	(24,985)
Accrued compensation	(33,153)	(7,648)
Deferred revenue	8,151	(6,796)
Customer contract deposits	7,849	(17,519)
Other assets and liabilities, net	(46,657)	(5,209)
Net cash provided by operating activities	323,423	257,505
Cash flows relating to investing activities
Acquisition of businesses and assets, net of cash acquired	(5,479)	(50,166)
Capital expenditures	(118,630)	(174,258)
Purchases of investments and contributions to venture capital investments	(35,538)	(22,689)
Proceeds from sale of investments	12,359	2,943
Other, net	(370)	(1,057)
Net cash used in investing activities	(147,658)	(245,227)
Cash flows relating to financing activities
Proceeds from long-term debt and revolving credit facility	741,200	281,796
Proceeds from exercises of stock options	22,331	15,719
Payments on long-term debt, revolving credit facility, and finance lease obligations	(987,344)	(317,049)
Purchase of treasury stock	(18,265)	(23,978)
Payments of contingent consideration	0	(2,711)
Purchases of additional equity interests, net	(12,000)	0
Other, net	(13,434)	0
Net cash used in financing activities	(267,512)	(46,223)
Effect of exchange rate changes on cash, cash equivalents, and restricted cash	(11,729)	1,508
Net change in cash, cash equivalents, and restricted cash	(103,476)	(32,437)
Cash, cash equivalents, and restricted cash, beginning of period	284,480	241,214
Cash, cash equivalents, and restricted cash, end of period	$ 181,004	$ 208,777

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY AND REDEEMABLE NONCONTROLLING INTERESTS (UNAUDITED) - USD ($) shares in Thousands, $ in Thousands	Total	Total Charles River Laboratories, Inc. Equity	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Treasury Stock	Noncontrolling Interest
Beginning balance at Dec. 31, 2022	$ 42,427
Increase (Decrease) in Temporary Equity
Net income	322
Other comprehensive (loss), net of tax	186
Ending balance at Apr. 01, 2023	42,935
Beginning balance (in shares) at Dec. 31, 2022			50,944
Beginning balance at Dec. 31, 2022	2,981,078	$ 2,976,293	$ 509	$ 1,804,940	$ 1,432,901	$ (262,057)	$ 0	$ 4,785
Beginning balance (in shares) at Dec. 31, 2022							0
Increase (Decrease) in Stockholders' Equity
Net income	103,632	103,131			103,131			501
Other comprehensive (loss), net of tax	22,933	22,933				22,933
Issuance of stock under employee compensation plans (in shares)			316
Issuance of stock under employee compensation plans	11,792	11,792	$ 3	11,789
Purchase of treasury shares (in shares)							78
Purchase of treasury shares	(19,012)	(19,012)					$ (19,012)
Stock-based compensation	13,460	13,460		13,460
Ending balance (in shares) at Apr. 01, 2023			51,260
Ending balance at Apr. 01, 2023	3,113,883	3,108,597	$ 512	1,830,189	1,536,032	(239,124)	$ (19,012)	5,286
Ending balance (in shares) at Apr. 01, 2023							78
Increase (Decrease) in Temporary Equity
Net income	1,857
Other comprehensive (loss), net of tax	(2,345)
Ending balance at Jul. 01, 2023	42,447
Increase (Decrease) in Stockholders' Equity
Net income	97,586	97,020			97,020			566
Other comprehensive (loss), net of tax	30,855	30,855				30,855
Issuance of stock under employee compensation plans (in shares)			110
Issuance of stock under employee compensation plans	3,927	3,927	$ 1	3,926
Purchase of treasury shares (in shares)							26
Purchase of treasury shares	(4,966)	(4,966)					$ (4,966)
Stock-based compensation	16,270	16,270		16,270
Ending balance (in shares) at Jul. 01, 2023			51,370
Ending balance at Jul. 01, 2023	3,257,555	3,251,703	$ 513	1,850,385	1,633,052	(208,269)	$ (23,978)	5,852
Ending balance (in shares) at Jul. 01, 2023							104
Beginning balance at Dec. 30, 2023	56,722
Increase (Decrease) in Temporary Equity
Net income	1,201
Other comprehensive (loss), net of tax	(2,763)
Adjustment of redeemable noncontrolling interests to redemption value	4,807
Dividends to noncontrolling interests	(2,192)
Ending balance at Mar. 30, 2024	$ 57,775
Beginning balance (in shares) at Dec. 30, 2023	51,338		51,338
Beginning balance at Dec. 30, 2023	$ 3,602,276	3,596,882	$ 513	1,905,578	1,887,218	(196,427)	$ 0	5,394
Beginning balance (in shares) at Dec. 30, 2023	0						0
Increase (Decrease) in Stockholders' Equity
Net income	$ 73,281	72,960			72,960			321
Other comprehensive (loss), net of tax	(53,492)	(53,492)				(53,492)
Adjustment of redeemable noncontrolling interests to redemption value	(4,807)	(4,807)		(4,406)	(401)
Dividends to noncontrolling interests	0
Issuance of stock under employee compensation plans (in shares)			214
Issuance of stock under employee compensation plans	21,505	21,505	$ 2	21,503
Purchase of treasury shares (in shares)							42
Purchase of treasury shares	(9,351)	(9,351)					$ (9,351)
Stock-based compensation	16,738	16,738		16,738
Ending balance (in shares) at Mar. 30, 2024			51,552
Ending balance at Mar. 30, 2024	3,646,150	3,640,435	$ 515	1,939,413	1,959,777	(249,919)	$ (9,351)	5,715
Ending balance (in shares) at Mar. 30, 2024							42
Beginning balance at Dec. 30, 2023	56,722
Ending balance at Jun. 29, 2024	$ 46,076
Beginning balance (in shares) at Dec. 30, 2023	51,338		51,338
Beginning balance at Dec. 30, 2023	$ 3,602,276	3,596,882	$ 513	1,905,578	1,887,218	(196,427)	$ 0	5,394
Beginning balance (in shares) at Dec. 30, 2023	0						0
Ending balance (in shares) at Jun. 29, 2024	51,613		51,696
Ending balance at Jun. 29, 2024	$ 3,727,018	3,722,729	$ 517	1,956,629	2,053,557	(269,709)	$ (18,265)	4,289
Ending balance (in shares) at Jun. 29, 2024	83						83
Beginning balance at Mar. 30, 2024	$ 57,775
Increase (Decrease) in Temporary Equity
Net income	(332)
Other comprehensive (loss), net of tax	85
Adjustment of redeemable noncontrolling interests to redemption value	496
Dividends to noncontrolling interests	0
Purchase of remaining equity interest of other redeemable noncontrolling interest	(12,000)
Adjustment of purchase price of Noveprim redeemable noncontrolling interest	52
Ending balance at Jun. 29, 2024	46,076
Beginning balance (in shares) at Mar. 30, 2024			51,552
Beginning balance at Mar. 30, 2024	3,646,150	3,640,435	$ 515	1,939,413	1,959,777	(249,919)	$ (9,351)	5,715
Beginning balance (in shares) at Mar. 30, 2024							42
Increase (Decrease) in Stockholders' Equity
Net income	94,593	94,081			94,081			512
Other comprehensive (loss), net of tax	(19,790)	(19,790)				(19,790)
Adjustment of redeemable noncontrolling interests to redemption value	(496)	(496)		(195)	(301)
Dividends to noncontrolling interests	(1,938)							(1,938)
Issuance of stock under employee compensation plans (in shares)			144
Issuance of stock under employee compensation plans	826	826	$ 2	824
Purchase of treasury shares (in shares)							41
Purchase of treasury shares	(8,914)	(8,914)					$ (8,914)
Stock-based compensation	$ 16,587	16,587		16,587
Ending balance (in shares) at Jun. 29, 2024	51,613		51,696
Ending balance at Jun. 29, 2024	$ 3,727,018	$ 3,722,729	$ 517	$ 1,956,629	$ 2,053,557	$ (269,709)	$ (18,265)	$ 4,289
Ending balance (in shares) at Jun. 29, 2024	83						83

BASIS OF PRESENTATION	6 Months Ended
BASIS OF PRESENTATION	Jun. 29, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
BASIS OF PRESENTATION	BASIS OF PRESENTATION The accompanying condensed consolidated financial statements are unaudited and have been prepared by Charles River Laboratories International, Inc. (the Company) in accordance with accounting principles generally accepted in the United States (U.S. GAAP) and pursuant to the rules and regulations of the Securities and Exchange Commission (SEC). The year-end condensed consolidated balance sheet data was derived from the Company’s audited consolidated financial statements, but does not include all disclosures required by U.S. GAAP. These unaudited condensed consolidated financial statements should be read in conjunction with the Company’s Annual Report on Form 10-K for fiscal year 2023 as filed with the SEC on February 14, 2024. Certain reclassifications of prior year amounts have been made to conform to the current year presentation. The unaudited condensed consolidated financial statements, in the opinion of management, reflect all normal and recurring adjustments necessary for a fair statement of the Company’s financial position and results of operations. Use of Estimates The preparation of unaudited condensed consolidated financial statements in accordance with U.S. GAAP requires that the Company make estimates and judgments that may affect the reported amounts of assets, liabilities, revenues, expenses and related disclosure of contingent assets and liabilities. On an on-going basis, the Company evaluates its estimates, judgments, and methodologies. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Actual results may differ from these estimates under different assumptions or conditions. Changes in estimates are reflected in reported results in the period in which they become known. Newly Issued Accounting Pronouncements In November 2023, the FASB issued ASU 2023-07, “Improvements to Reportable Segment Disclosures (Topic 280)”. ASU 2023-07 modifies reportable segment disclosure requirements, primarily through enhanced disclosures about segment expenses categorized as significant or regularly provided to the Chief Operating Decision Maker (CODM). In addition, the amendments enhance interim disclosure requirements, clarify circumstances in which an entity can disclose multiple segment measures of profit or loss, and contain other disclosure requirements. The purpose of the amendments is to enable investors to better understand an entity’s overall performance and assess potential future cash flows. This ASU is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted and the amendments in this update are required to be applied on a retrospective basis. The Company is currently evaluating the impact this new standard will have on the related disclosures in the annual consolidated financial statements, but does not believe there will be a material impact. In December 2023, the FASB issued ASU 2023-09, “Improvements to Income Tax Disclosures (Topic 740)”. ASU 2023-09 requires enhanced disclosures on income taxes paid, adds disaggregation of continuing operations before income taxes between foreign and domestic earnings and defines specific categories for the reconciliation of jurisdictional tax rate to effective tax rate. This ASU is effective for fiscal years beginning after December 15, 2024, and can be applied on a prospective basis. The Company is currently evaluating the impact this new standard will have on the related disclosures on the consolidated financial statements. Summary of Significant Accounting Policies The Company’s significant accounting policies are described in Note 1, “Description of Business and Summary of Significant Accounting Policies” in the Company’s Annual Report on Form 10-K for fiscal year 2023 as filed with the SEC on February 14, 2024. Consolidation The Company’s unaudited condensed consolidated financial statements reflect its financial statements and those of its subsidiaries in which the Company holds a controlling financial interest. For consolidated entities in which the Company owns or is exposed to less than 100% of the economics, the Company records net income (loss) attributable to noncontrolling interests in its unaudited condensed consolidated statements of income equal to the percentage of the economic or ownership interest retained in such entities by the respective noncontrolling parties. Redeemable noncontrolling interests, where the noncontrolling interest holders have the ability to require the Company to purchase the remaining interests, are classified in the mezzanine section of the unaudited condensed consolidated balance sheets, which is presented above the equity section and below liabilities. Intercompany balances and transactions are eliminated in consolidation. The Company’s fiscal year is typically based on 52-weeks, with each quarter composed of 13 weeks ending on the last Saturday on, or closest to, March 31, June 30, September 30, and December 31. A 53rd week in the fourth quarter of the fiscal year is occasionally necessary to align with a December 31 calendar year-end. Segment Reporting The Company reports its results in three reportable segments: Research Models and Services (RMS), Discovery and Safety Assessment (DSA), and Manufacturing Solutions (Manufacturing). The Company’s RMS reportable segment includes the Research Models, Research Model Services, and Cell Solutions businesses. Research Models includes the commercial production and sale of small research models, as well as the supply of large research models. Research Model Services includes: Insourcing Solutions (IS), which provides colony management of clients’ research operations (including recruitment, training, staffing, and management services) within the clients’ facilities and utilizing the Charles River Accelerator and Development Lab (CRADL™) offering, which provides vivarium space to clients, Genetically Engineered Models and Services (GEMS), which performs contract breeding and other services associated with genetically engineered models, and Research Animal Diagnostic Services (RADS), which provides health monitoring and diagnostics services related to research models; and Cell Solutions, which supplies controlled, consistent, customized primary cells and blood components derived from normal and mobilized peripheral blood and bone marrow. The Company’s DSA reportable segment includes two businesses: Discovery Services and Safety Assessment. The Company provides regulated and non-regulated DSA services to support the research, development, and regulatory-required safety testing of potential new drugs, including therapeutic discovery and optimization plus in vitro and in vivo studies, laboratory support services, and strategic non-clinical consulting and program management to support product development. The Company’s Manufacturing reportable segment includes Microbial Solutions, which provides in vitro (non-animal) lot-release testing products, microbial detection products, and species identification services and Biologics Solutions (Biologics), which performs specialized testing of biologics (Biologics Testing Solutions) as well as contract development and manufacturing products and services (CDMO).

ACQUISITIONS AND DIVESTITURES

6 Months Ended

Jun. 29, 2024

Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]

ACQUISITIONS AND DIVESTITURES

Fiscal 2023 Acquisition

Noveprim Group

SAMDI Tech, Inc.

Purchase price information

The purchase price allocation was as follows:


	Noveprim Group(1)		SAMDI Tech, Inc.
	November 30, 2023		January 27, 2023
	(in thousands)
Trade receivables	$	1,308	$	513
Inventories	66,500		—
Other current assets (excluding cash)	3,261		75
Property, plant and equipment	36,154		593
Operating lease right-of-use asset, net	104		—
Goodwill (2)	190,024		37,129
Definite-lived intangible assets	9,500		33,070
Other long-term assets (3)	167,907		6
Deferred revenue	—		(43)
Other current liabilities	(16,268)		(351)
Operating lease right-of-use liabilities (Long-term)	(97)		—
Deferred tax liabilities	(12,984)		(8,191)
Other long-term liabilities	(7,579)		—
Redeemable noncontrolling interest (4)	(45,426)		—
Total purchase price allocation	$	392,404	$	62,801

(1) Purchase price allocation is preliminary and subject to change as additional information becomes available concerning the fair value and tax basis of the assets acquired and liabilities assumed, including certain contracts, obligations, and finalization of any working capital adjustments. Any additional adjustments to the purchase price allocation will be made as soon as practicable but no later than one year from the date of acquisition.
(2) The goodwill resulting from these transactions is primarily attributable to the potential growth of the Company’s segments from new customers introduced to the acquired businesses or synergies to be realized from acquiring an internal supplier servicing the DSA business and the assembled workforce of the acquirees, thus is not deductible for tax purposes.
(3) Other long-term assets acquired from the Noveprim acquisition include $167.8 million of biological assets, which will be amortized over an estimated eight-year useful life.
(4) Refer to Note 12. Equity and Noncontrolling Interests for further a description of the 10% noncontrolling interest fair value.

The definite-lived intangible assets acquired were as follows:


	Noveprim Group		SAMDI Tech, Inc.
Definite-Lived Intangible Assets	(in thousands)
Client relationships	$	—	$	23,400
Other intangible assets	9,500		9,670
Total definite-lived intangible assets	$	9,500	$	33,070

Weighted Average Amortization Life	(in years)
Client relationships	—		15
Other intangible assets	7		7
Total definite-lived intangible assets	7		12

REVENUE FROM CONTRACTS WITH CUSTOMERS

6 Months Ended

Jun. 29, 2024

Revenue from Contract with Customer [Abstract]

REVENUE FROM CONTRACTS WITH CUSTOMERS

Disaggregation of Revenue

The following table disaggregates the Company’s revenue by major business line and timing of transfer of products or services:


	Three Months Ended				Six Months Ended
	June 29, 2024		July 1, 2023		June 29, 2024		July 1, 2023
	(in thousands)
Timing of Revenue Recognition:
RMS
Services and products transferred over time	$	95,299	$	94,458	$	192,348	$	188,097
Services and products transferred at a point in time	111,090		115,490		234,948		221,617
Total RMS revenue	206,389		209,948		427,296		409,714
DSA
Services and products transferred over time	626,785		662,653		1,230,910		1,324,489
Services and products transferred at a point in time	634		804		1,961		1,321
Total DSA revenue	627,419		663,457		1,232,871		1,325,810
Manufacturing
Services and products transferred over time	104,481		100,460		204,539		186,546
Services and products transferred at a point in time	87,828		86,072		172,971		167,240
Total Manufacturing revenue	192,309		186,532		377,510		353,786
Total revenue	$	1,026,117	$	1,059,937	$	2,037,677	$	2,089,310

Contract Balances from Contracts with Customers

The following table provides information about client receivables, contract assets, and contract liabilities from contracts with customers:


	June 29, 2024		December 30, 2023
	(in thousands)
Assets from contracts with customers
Client receivables	$	568,283	$	578,077
Unbilled revenue	218,889		228,020
Total	787,172		806,097
Less: Allowance for credit losses	(24,951)		(25,722)
Trade receivables and contract assets, net	$	762,221	$	780,375

Liabilities from contracts with customers
Current deferred revenue	$	247,177	$	241,820
Long-term deferred revenue (included in Other long-term liabilities)	29,139		30,919
Customer contract deposits (included in Other current liabilities)	92,032		85,554

Allowance for Credit Losses

The following is a summary of the activity of the Company’s allowance for credit losses:


	Six Months Ended
		June 29, 2024		July 1, 2023
		(in thousands)
Beginning balance		$	25,722	$	11,278
Provisions		4,719		9,849
Reductions		(5,490)		(3,087)
Ending balance		$	24,951	$	18,040

Transaction Price Allocated to Future Performance Obligations

Other Performance Obligations


	Three Months Ended				Six Months Ended
	June 29, 2024		July 1, 2023		June 29, 2024		July 1, 2023
	(in thousands)								Affected Line Item in the Unaudited Condensed Consolidated Statements of Income
Lease revenue	$	16,716	$	23,891	$	37,690	$	47,981	Service revenue

SEGMENT AND GEOGRAPHIC INFORMATION

6 Months Ended

Jun. 29, 2024

Segment Reporting [Abstract]

SEGMENT AND GEOGRAPHIC INFORMATION


	Three Months Ended				Six Months Ended
	June 29, 2024		July 1, 2023		June 29, 2024		July 1, 2023
	(in thousands)
RMS
Revenue	$	206,389	$	209,948	$	427,296	$	409,714
Cost of revenue (excluding amortization of intangible assets)	142,942		127,888		283,867		254,692
Selling, general and administrative	27,597		27,653		58,490		54,711
Amortization of intangible assets	5,902		5,489		11,842		10,984
Operating income	$	29,948	$	48,918	$	73,097	$	89,327


DSA
Revenue	$	627,419	$	663,457	$	1,232,871	$	1,325,810
Cost of revenue (excluding amortization of intangible assets)	418,964		420,551		836,876		832,074
Selling, general and administrative	54,479		63,709		111,338		125,707
Amortization of intangible assets	15,600		17,659		31,442		35,060
Operating income	$	138,376	$	161,538	$	253,215	$	332,969


Manufacturing
Revenue	$	192,309	$	186,532	$	377,510	$	353,786
Cost of revenue (excluding amortization of intangible assets)	110,498		112,522		218,378		225,914
Selling, general and administrative	33,813		38,481		66,660		78,218
Amortization of intangible assets	10,768		11,126		21,561		23,145
Operating income	$	37,230	$	24,403	$	70,911	$	26,509


Unallocated Corporate
Selling, general and administrative	$	53,902	$	69,914	$	119,594	$	115,968
Operating income (1)	$	(53,902)	$	(69,914)	$	(119,594)	$	(115,968)

Consolidated
Revenue	$	1,026,117	$	1,059,937	$	2,037,677	$	2,089,310
Cost of revenue (excluding amortization of intangible assets)	672,404		660,960		1,339,121		1,312,679
Selling, general and administrative	169,791		199,758		356,082		374,604
Amortization of intangible assets	32,270		34,274		64,845		69,190
Operating income	$	151,652	$	164,945	$	277,629	$	332,837


(1) Operating income for unallocated corporate consists of costs associated with departments such as senior executives, corporate accounting, legal, tax, human resources, treasury, and investor relations.

Capital expenditures and depreciation and amortization (related to both intangible assets and certain assets acquired in business combinations) by reportable segment are as follows:


	RMS		DSA		Manufacturing		Unallocated Corporate		Consolidated
	(in thousands)
Capital Expenditures
Three Months Ended:
June 29, 2024	$	9,313	$	19,444	$	10,583	$	146	$	39,486
July 1, 2023	7,493		48,326		10,862		702		67,383
Six Months Ended:
June 29, 2024	$	29,357	$	68,403	$	19,445	$	1,425	$	118,630
July 1, 2023	26,577		113,510		32,600		1,571		174,258

Depreciation and amortization
Three Months Ended:
June 29, 2024	$	16,538	$	47,729	$	20,073	$	1,742	$	86,082
July 1, 2023	13,949		43,124		19,523		1,075		77,671
Six Months Ended:
June 29, 2024	$	34,661	$	93,518	$	39,878	$	3,382	$	171,439
July 1, 2023	27,438		85,574		39,607		2,121		154,740

Revenue by geographic area is as follows:


	U.S.		Europe		Canada		Asia Pacific		Other		Consolidated
	(in thousands)
Three Months Ended:
June 29, 2024	$	571,427	$	271,377	$	125,244	$	50,387	$	7,682	$	1,026,117
July 1, 2023	606,775		272,976		117,647		59,864		2,675		1,059,937

Six Months Ended:
June 29, 2024	$	1,133,744	$	547,696	$	235,645	$	96,159	$	24,433	$	2,037,677
July 1, 2023	1,212,216		540,679		228,253		102,677		5,485		2,089,310

Included in the Other category above are operations located in Brazil, Israel, and Mauritius. Revenue represents sales originating in entities physically located in the identified geographic area.

Long-lived assets by geographic area are as follows:


	U.S.		Europe		Canada		Asia Pacific		Other		Consolidated
	(in thousands)
Long-lived assets
June 29, 2024	$	950,254	$	405,429	$	153,945	$	68,868	$	35,399	$	1,613,895
December 30, 2023	964,176		407,375		157,483		74,605		36,102		1,639,741

Long-lived assets consist of property, plant, and equipment, net.

SUPPLEMENTAL CASH FLOW INFORMATION

6 Months Ended

Jun. 29, 2024

Supplemental Cash Flow Information [Abstract]

SUPPLEMENTAL CASH FLOW INFORMATION


	Six Months Ended
	June 29, 2024		July 1, 2023
	(in thousands)
Cash paid for income taxes	$	71,722	$	61,816
Cash paid for interest	65,630		66,563
Non-cash investing activities:
Purchases of Property, plant and equipment included in Accounts payable and Accrued liabilities	$	25,278	$	47,850
Assets acquired under finance leases	3,159		154

Cash, cash equivalents and restricted cash is included in the accompanying unaudited balance sheet as follows:


	June 29, 2024		December 30, 2023
	(in thousands)
Supplemental cash flow information:
Cash and cash equivalents	$	179,213	$	276,771

Restricted cash included in Other current assets	325		5,803
Restricted cash included in Other assets	1,466		1,906
Cash, cash equivalents, and restricted cash, end of period	$	181,004	$	284,480

INVENTORY

6 Months Ended

Jun. 29, 2024

Inventory Disclosure [Abstract]

INVENTORY

Inventories

The composition of inventories is as follows:


	June 29, 2024		December 30, 2023
	(in thousands)
Raw materials and supplies	$	43,238	$	42,296
Work in process	57,923		59,727
Finished products	247,950		278,236
Inventories	$	349,111	$	380,259

Inventory step up amortization expense incurred for the three and six months ended June 29, 2024 was $3.5 million and $10.6 million, respectively.

PROPERTY, PLANT AND EQUIPMENT, NET

6 Months Ended

Jun. 29, 2024

Property, Plant and Equipment [Abstract]

PROPERTY, PLANT AND EQUIPMENT, NET

The composition of property, plant and equipment, net is as follows:


	June 29, 2024		December 30, 2023
	(in thousands)
Land	$	78,812	$	79,546
Buildings (1)	1,061,408		1,053,915
Machinery and equipment (1)	1,007,210		984,867
Leasehold improvements	381,879		366,556
Furniture and fixtures	32,060		31,284
Computer hardware and software (1)	259,889		254,413
Vehicles (1)	7,149		6,746
Construction in progress	182,823		197,723
Total	3,011,230		2,975,050
Less: Accumulated depreciation	(1,397,335)		(1,335,309)
Property, plant and equipment, net	$	1,613,895	$	1,639,741

(1) These balances include assets under finance leases.

VENTURE CAPITAL AND STRATEGIC EQUITY INVESTMENTS

6 Months Ended

Jun. 29, 2024

Equity Method Investments and Joint Ventures [Abstract]

VENTURE CAPITAL AND STRATEGIC EQUITY INVESTMENTS

Venture capital investments are summarized below:


	Six Months Ended
	June 29, 2024		July 1, 2023
	(in thousands)
Beginning balance	$	121,158	$	129,012
Capital contributions	6,479		8,702
Distributions	(16,100)		(9,679)
Gains (losses)	1,789		(8,429)
Foreign currency translation	(249)		466
Ending balance	$	113,077	$	120,072

The Company also invests, with minority positions, directly in equity of predominantly privately held companies. Strategic investments are summarized below:


	Six Months Ended
	June 29, 2024		July 1, 2023
	(in thousands)
Beginning balance	$	122,653	$	182,590
Purchase of investments	2,140		13,710
Distributions	—		(4,146)
Gain (loss)	(5,265)		3,253
Reduction for acquisition of entity (1)	—		(12,635)
Foreign currency translation	(746)		(2,563)
Ending balance	$	118,782	$	180,209

(1) Refer to Note 2. Acquisitions for further discussion on the acquisition of SAMDI.

FAIR VALUE

6 Months Ended

Jun. 29, 2024

Fair Value Disclosures [Abstract]

FAIR VALUE

Assets and liabilities measured at fair value on a recurring basis are summarized below:


	June 29, 2024
	Level 1		Level 2		Level 3		Total
Current assets measured at fair value:	(in thousands)
Cash equivalents	$	—	$	7,257	$	—	$	7,257
Term deposit	—		26,983		—		26,983
Other assets:
Life insurance policies	—		45,210		—		45,210
Interest rate swap	—		1,338		—		1,338
Total assets measured at fair value	$	—	$	80,788	$	—	$	80,788



Other long-term liabilities measured at fair value:
Contingent consideration	$	—	$	—	$	38,335	$	38,335

Total liabilities measured at fair value	$	—	$	—	$	38,335	$	38,335

The Company recognizes transfers between levels within the fair value hierarchy, if any, at the end of each quarter. During the six months ended June 29, 2024, there were no transfers between levels.


	December 30, 2023
	Level 1		Level 2		Level 3		Total
Current assets measured at fair value:	(in thousands)
Cash equivalents	$	—	$	29	$	—	$	29
Other assets:
Life insurance policies	—		40,912		—		40,912
Interest rate swap	—		966		—		966
Total assets measured at fair value	$	—	$	41,907	$	—	$	41,907

Other long-term liabilities measured at fair value
Contingent consideration	$	—	$	—	$	33,265	$	33,265

Total liabilities measured at fair value	$	—	$	—	$	33,265	$	33,265

During the year ended December 30, 2023, there were no transfers between levels.

Contingent Consideration

The following table provides a rollforward of the contingent consideration related to the Company’s acquisitions.


	Six Months Ended
	June 29, 2024		July 1, 2023
	(in thousands)
Beginning balance	$	33,265	$	13,431

Payments	—		(15,130)
Total gains or losses (realized/unrealized):
Adjustment of previously recorded contingent liability	5,070		1,810
Foreign currency translation	—		(111)
Ending balance	$	38,335	$	—

Cash Flow Hedge

Debt Instruments

observable outputs, it is deemed to be Level 2 within the fair value hierarchy. The book value and fair value of the Company’s Senior Notes is summarized below:


	June 29, 2024				December 30, 2023
	Book Value		Fair Value		Book Value		Fair Value
	(in thousands)
4.25% Senior Notes due 2028	$	500,000	$	468,750	$	500,000	$	478,100
3.75% Senior Notes due 2029	500,000		453,750		500,000		458,100
4.00% Senior Notes due 2031	500,000		445,000		500,000		449,350

GOODWILL AND INTANGIBLE ASSETS

6 Months Ended

Jun. 29, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

GOODWILL AND INTANGIBLE ASSETS

Goodwill

The following table provides a rollforward of the Company’s goodwill:


	RMS		DSA (1)		Manufacturing		Total
	(in thousands)
December 30, 2023	$	497,474	$	1,662,434	$	935,137	$	3,095,045
Acquisitions	—		17,675		—		17,675

Foreign exchange	(536)		(29,251)		(3,240)		(33,027)
June 29, 2024	$	496,938	$	1,650,858	$	931,897	$	3,079,693
(1) DSA includes accumulated impairment losses of $1 billion, which were recognized in fiscal years 2008 and 2010.

Intangible Assets, Net

The following table displays intangible assets, net by major class:


	June 29, 2024						December 30, 2023
	Gross		Accumulated Amortization		Net		Gross		Accumulated Amortization		Net
	(in thousands)
Client relationships	$	1,518,194	$	(766,261)	$	751,933	$	1,528,780	$	(721,322)	$	807,458
Technology	140,737		(114,410)		26,327		142,190		(111,764)		30,426
Trademarks and trade names	11,849		(5,098)		6,751		11,878		(4,568)		7,310
Backlog	3,100		(2,792)		308		3,100		(2,177)		923
Other	42,866		(28,056)		14,810		43,611		(25,677)		17,934
Intangible assets	$	1,716,746	$	(916,617)	$	800,129	$	1,729,559	$	(865,508)	$	864,051

The decrease in intangible assets, net during the six months ended June 29, 2024 related to normal amortization over the useful lives.

DEBT AND OTHER FINANCING ARRANGEMENTS

6 Months Ended

Jun. 29, 2024

Debt Disclosure [Abstract]

DEBT AND OTHER FINANCING ARRANGEMENTS

Long-term debt, net and finance leases consists of the following:


	June 29, 2024		December 30, 2023
	(in thousands)
Revolving facility	$	879,498	$	1,129,243
4.25% Senior Notes due 2028	500,000		500,000
3.75% Senior Notes due 2029	500,000		500,000
4.00% Senior Notes due 2031	500,000		500,000
Other debt	16,125		9,575
Finance leases	29,637		28,550
Total debt and finance leases	2,425,260		2,667,368
Less:
Current portion of long-term debt	435		3,172
Current portion of finance leases	2,778		2,398
Current portion of long-term debt and finance leases	3,213		5,570
Long-term debt and finance leases	2,422,047		2,661,798
Debt discount and debt issuance costs	(12,667)		(14,651)
Long-term debt, net and finance leases	$	2,409,380	$	2,647,147

As of June 29, 2024 and December 30, 2023, the weighted average interest rate on the Company’s debt was 4.64% and 4.93%, respectively.

Letters of Credit

As of June 29, 2024 and December 30, 2023, the Company had $21.2 million and $21.6 million, respectively, in outstanding letters of credit.

EQUITY AND NONCONTROLLING INTERESTS

6 Months Ended

Jun. 29, 2024

Equity [Abstract]

EQUITY AND NONCONTROLLING INTERESTS

Earnings Per Share

The following table reconciles the numerator and denominator in the computations of basic and diluted earnings per share:


	Three Months Ended				Six Months Ended
	June 29, 2024		July 1, 2023		June 29, 2024		July 1, 2023
	(in thousands)
Numerator:
Net income	$	94,261	$	99,443	$	168,743	$	203,397
Less: Net income attributable to noncontrolling interests	180		2,423		1,702		3,246
Net income available to Charles River Laboratories International, Inc.	94,081		97,020		167,041		200,151

Calculation of net income per share attributable to common shareholders of Charles River Laboratories International, Inc.
Net income available to Charles River Laboratories International, Inc.	$	94,081	$	97,020	$	167,041	$	200,151
Less: Adjustment of redeemable noncontrolling interest (1)	301		—		702		—
Less: Incremental dividends attributable to noncontrolling interest holders (2)	3,792		—		9,022		—
Net income available to Charles River Laboratories International, Inc. common shareholders	$	89,988	$	97,020	$	157,317	$	200,151

Denominator:
Weighted-average shares outstanding - Basic	51,551		51,216		51,494		51,157
Effect of dilutive securities:
Stock options, restricted stock units and performance share units	295		251		316		225
Weighted-average shares outstanding - Diluted	51,846		51,467		51,810		51,382

Anti-dilutive common stock equivalents (3)	506		594		482		589

(1) Represents adjustments of redeemable noncontrolling interest that impact retained earnings.
(2) Represents incremental undeclared dividends attributable to Noveprim noncontrolling interest holders who are entitled to preferential dividends for fiscal year 2024.
(3) These common stock equivalents were outstanding for the periods presented, but were not included in the computation of diluted EPS for those periods because their inclusion would have had an anti-dilutive effect.

Treasury Shares

The Company’s Board of Directors had authorized a $1.3 billion stock repurchase program. As of June 29, 2024, the Company had $129.1 million remaining on the authorized stock repurchase program.

Accumulated Other Comprehensive Income (Loss)

Changes to each component of accumulated other comprehensive income (loss), net of income taxes, are as follows:


	Foreign Currency Translation Adjustment and Other		Pension and Other Post-Retirement Benefit Plans		Net Unrealized (Loss) Gain on Cash Flow Hedge		Total
	(in thousands)
December 30, 2023	$	(149,999)	$	(47,167)	$	739	$	(196,427)
Other comprehensive income (loss) before reclassifications	(81,840)		686		372		(80,782)

Net current period other comprehensive income (loss)	(81,840)		686		372		(80,782)
Income tax expense (benefit)	(7,759)		170		89		(7,500)
June 29, 2024	$	(224,080)	$	(46,651)	$	1,022	$	(269,709)

Redeemable Noncontrolling Interests

Noveprim

Other redeemable noncontrolling interest

Vital River

Nonredeemable Noncontrolling Interest

INCOME TAXES

6 Months Ended

Jun. 29, 2024

Income Tax Disclosure [Abstract]

INCOME TAXES

The Company’s prepaid and accrued tax positions are as follows:


	June 29, 2024		December 30, 2023		Affected Line Item in the Unaudited Condensed Consolidated Balance Sheets
	(in thousands)
Prepaid income tax	$	71,242	$	59,715	Other current assets
Accrued income taxes	35,126		38,819		Other current liabilities

RESTRUCTURING AND ASSET IMPAIRMENTS

6 Months Ended

Jun. 29, 2024

Restructuring and Related Activities [Abstract]

RESTRUCTURING AND ASSET IMPAIRMENTS

The following table presents restructuring costs by reportable segment:


	Three Months Ended				Six Months Ended
	June 29, 2024		July 1, 2023		June 29, 2024		July 1, 2023
	(in thousands)
RMS	$	10,228	$	—	$	17,615	$	—
DSA	3,766		—		10,257		(2)
Manufacturing	2,657		2,699		4,288		6,187
Unallocated corporate	1,304		—		2,794		—
Total	$	17,955	$	2,699	$	34,954	$	6,185

The following table presents restructuring costs as included within the Company’s unaudited condensed consolidated statements of income:


	June 29, 2024						July 1, 2023
	Severance and Transition Costs		Asset Impairments and Other Costs		Total		Severance and Transition Costs		Asset Impairments and Other Costs		Total
	(in thousands)
Three Months Ended
Cost of services provided (excluding amortization of intangible assets)	$	2,870	$	1,926	$	4,796	$	2,361	$	—	$	2,361
Cost of products sold (excluding amortization of intangible assets)	69		9,154		9,223		36		182		218
Selling, general and administrative	2,958		978		3,936		120		—		120
Total restructuring costs	$	5,897	$	12,058	$	17,955	$	2,517	$	182	$	2,699

Six Months Ended
Cost of services provided (excluding amortization of intangible assets)	$	7,680	$	3,034	$	10,714	$	2,928	$	—	$	2,928
Cost of products sold (excluding amortization of intangible assets)	747		10,484		11,231		54		2,746		2,800
Selling, general and administrative	6,507		6,502		13,009		449		8		457
Total restructuring costs	$	14,934	$	20,020	$	34,954	$	3,431	$	2,754	$	6,185

Rollforward of Restructuring Activities

The following table provides a rollforward for the Company’s accrued restructuring costs related to all restructuring activities:


	Severance and Transition Costs		Asset Impairments		Other Costs		Total
	(in thousands)
Six Months Ended June 29, 2024
Beginning balance	$	4,175	$	—	$	875	$	5,050
Expense	14,934		14,181		5,839		34,954
Payments / utilization	(9,323)		—		(5,067)		(14,390)
Other non-cash adjustments	—		(14,181)		(772)		(14,953)
Foreign currency adjustments	(57)		—		—		(57)
Ending Balance	$	9,729	$	—	$	875	$	10,604

Six Months Ended July 1, 2023
Beginning balance	$	356	$	—	$	944	$	1,300
Expense	3,431		2,479		275		6,185
Payments / utilization	(811)		—		(303)		(1,114)
Other non-cash adjustments	—		(2,479)		—		(2,479)
Foreign currency adjustments	9		—		—		9
Ending Balance	$	2,985	$	—	$	916	$	3,901

COMMITMENTS AND CONTINGENCIES	6 Months Ended
COMMITMENTS AND CONTINGENCIES	Jun. 29, 2024
Commitments and Contingencies Disclosure [Abstract]
COMMITMENTS AND CONTINGENCIES	COMMITMENTS AND CONTINGENCIES Litigation On February 16, 2023, the Company was informed by the U.S. Department of Justice (DOJ) that in conjunction with the U.S. Fish and Wildlife Service (USFWS), it had commenced an investigation into the Company’s conduct regarding several shipments of non-human primates from Cambodia. On February 17, 2023 the Company received a grand jury subpoena requesting certain documents related to such investigation. The Company is aware of a parallel civil investigation being undertaken by the DOJ and USFWS. The Company is cooperating with the DOJ and the USFWS and believes that the concerns raised with respect to the Company’s conduct are without merit. The Company maintains a global supplier onboarding and oversight program incorporating risk-based due diligence, auditing, and monitoring practices to help ensure the quality of our supplier relationships and compliance with applicable U.S. and international laws and regulations, and has operated under the belief that all shipments of non-human primates it received satisfied the material requirements, documentation and related processes and procedures of the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) documentation and related processes and procedures, which guides the release of each import by USFWS. Notwithstanding our efforts and good-faith belief, in connection with the civil investigation, the Company has voluntarily suspended future shipments of non-human primates from Cambodia to the United States until such time that the Company and USFWS can agree upon and implement additional procedures to reasonably ensure that non-human primates imported from Cambodia are purpose-bred. The Company continues to care for the Cambodia-sourced non-human primates from certain shipments in the United States. The carrying value of the inventory related to these shipments was approximately $27 million as of June 29, 2024, which reflects the value of the shipments in accordance with the Company’s inventory accounting policy. On May 16, 2023, the Company received an inquiry from the Enforcement Division of the U.S. Securities and Exchange Commission (SEC) requesting it to voluntarily provide information, subsequently augmented with a document subpoena and additional inquiries, primarily related to the sourcing of non-human primates and related disclosures, and the Company is cooperating with these requests. The Company is not able to predict what action, if any, might be taken in the future by the DOJ, USFWS, SEC or other governmental authorities as a result of the investigations. None of the DOJ, USFWS or SEC has provided the Company with any specific timeline or indication as to when these investigations or, specific to the DOJ and USFWS, discussions regarding future processes and procedures, will be concluded or resolved. The Company cannot predict the timing, outcome or possible impact of the investigations, including without limitation any potential fines, penalties or liabilities. A putative securities class action (Securities Class Action) was filed on May 19, 2023 against the Company and a number of its current/former officers in the United States District Court for the District of Massachusetts. On August 31, 2023, the court appointed the State Teachers Retirement System of Ohio as lead plaintiff. An amended complaint was filed on November 14, 2023 that, among other things, included only James Foster, the Chief Executive Officer and David R. Smith, the former Chief Financial Officer as defendants along with the Company. The amended complaint asserts claims under §§ 10(b) and 20(a) of the Securities Exchange Act of 1934 (the "Exchange Act") on behalf of a putative class of purchasers of Company securities from May 5, 2020 through February 21, 2023, alleging that certain of the Company’s disclosures about its practices with respect to the importation of non-human primates made during the putative class period were materially false or misleading. On July 1, 2024, the court dismissed the complaint, denied the plaintiff’s informal request for leave to amend, and entered judgment for defendants. On July 30, 2024 the plaintiff filed a notice of appeal. While the Company cannot predict the final outcome of this matter, it believes the class action to be without merit and plans to vigorously defend against it. The Company cannot reasonably estimate the maximum potential exposure or the range of possible loss in association with this matter. On November 8, 2023, a stockholder filed a derivative lawsuit in the U.S. District Court of the District of Delaware asserting claims on the Company’s behalf against the members of the Company’s Board of Directors and certain of the Company’s current/former officers (James Foster, the Chief Executive Officer; David R. Smith, the former Chief Financial Officer; and Flavia Pease, the current Chief Financial Officer). The complaint alleges that the defendants breached their fiduciary duties to the Company and its stockholders because certain of the Company’s disclosures about its practices with respect to the importation of non-human primates were materially false or misleading. The complaint also alleges that the defendants breached their fiduciary duties by causing the Company to fail to maintain adequate internal controls over securities disclosure and compliance with applicable law and by failing to comply with the company’s Code of Business Conduct and Ethics. The lawsuit is currently stayed by agreement of the parties pending further developments in the Securities Class Action pending in the United States District Court for the District of Massachusetts. On August 2, 2024, a different stockholder filed a lawsuit in the U.S. District Court of Delaware asserting similar derivative claims on the Company’s behalf against members of the Company’s current and former Board of Directors and the same current/former officers based on similar allegations of purportedly misleading disclosures and non-compliance with legal rules and ethics standards in respect of the importation of non-human primates, as well as insider-trading claims against certain of the defendants. While the Company cannot predict the outcome of these matters, it believes the derivative lawsuits to be without merit and plans to vigorously defend against them. The Company cannot reasonably estimate the maximum potential exposure or the range of possible loss in association with these matters. Aside from the matters above, the Company believes there are no other matters pending against the Company that could have a material impact on the Company’s business, financial condition, or results of operations.

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Thousands	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Pay vs Performance Disclosure
Net income available to Charles River Laboratories International, Inc.	$ 94,081	$ 97,020	$ 167,041	$ 200,151

Insider Trading Arrangements	3 Months Ended
Insider Trading Arrangements	Jun. 29, 2024
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

BASIS OF PRESENTATION (Policies)	6 Months Ended
BASIS OF PRESENTATION (Policies)	Jun. 29, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	The accompanying condensed consolidated financial statements are unaudited and have been prepared by Charles River Laboratories International, Inc. (the Company) in accordance with accounting principles generally accepted in the United States (U.S. GAAP) and pursuant to the rules and regulations of the Securities and Exchange Commission (SEC). The year-end condensed consolidated balance sheet data was derived from the Company’s audited consolidated financial statements, but does not include all disclosures required by U.S. GAAP. These unaudited condensed consolidated financial statements should be read in conjunction with the Company’s Annual Report on Form 10-K for fiscal year 2023 as filed with the SEC on February 14, 2024. Certain reclassifications of prior year amounts have been made to conform to the current year presentation. The unaudited condensed consolidated financial statements, in the opinion of management, reflect all normal and recurring adjustments necessary for a fair statement of the Company’s financial position and results of operations.
Use of Estimates	Use of Estimates The preparation of unaudited condensed consolidated financial statements in accordance with U.S. GAAP requires that the Company make estimates and judgments that may affect the reported amounts of assets, liabilities, revenues, expenses and related disclosure of contingent assets and liabilities. On an on-going basis, the Company evaluates its estimates, judgments, and methodologies. The Company bases its estimates on historical experience and on various other assumptions that are believed to be reasonable, the results of which form the basis for making judgments about the carrying values of assets and liabilities. Actual results may differ from these estimates under different assumptions or conditions. Changes in estimates are reflected in reported results in the period in which they become known.
Newly Issued Accounting Pronouncements	Newly Issued Accounting Pronouncements In November 2023, the FASB issued ASU 2023-07, “Improvements to Reportable Segment Disclosures (Topic 280)”. ASU 2023-07 modifies reportable segment disclosure requirements, primarily through enhanced disclosures about segment expenses categorized as significant or regularly provided to the Chief Operating Decision Maker (CODM). In addition, the amendments enhance interim disclosure requirements, clarify circumstances in which an entity can disclose multiple segment measures of profit or loss, and contain other disclosure requirements. The purpose of the amendments is to enable investors to better understand an entity’s overall performance and assess potential future cash flows. This ASU is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted and the amendments in this update are required to be applied on a retrospective basis. The Company is currently evaluating the impact this new standard will have on the related disclosures in the annual consolidated financial statements, but does not believe there will be a material impact. In December 2023, the FASB issued ASU 2023-09, “Improvements to Income Tax Disclosures (Topic 740)”. ASU 2023-09 requires enhanced disclosures on income taxes paid, adds disaggregation of continuing operations before income taxes between foreign and domestic earnings and defines specific categories for the reconciliation of jurisdictional tax rate to effective tax rate. This ASU is effective for fiscal years beginning after December 15, 2024, and can be applied on a prospective basis. The Company is currently evaluating the impact this new standard will have on the related disclosures on the consolidated financial statements.
Consolidation	Consolidation The Company’s unaudited condensed consolidated financial statements reflect its financial statements and those of its subsidiaries in which the Company holds a controlling financial interest. For consolidated entities in which the Company owns or is exposed to less than 100% of the economics, the Company records net income (loss) attributable to noncontrolling interests in its unaudited condensed consolidated statements of income equal to the percentage of the economic or ownership interest retained in such entities by the respective noncontrolling parties. Redeemable noncontrolling interests, where the noncontrolling interest holders have the ability to require the Company to purchase the remaining interests, are classified in the mezzanine section of the unaudited condensed consolidated balance sheets, which is presented above the equity section and below liabilities. Intercompany balances and transactions are eliminated in consolidation. The Company’s fiscal year is typically based on 52-weeks, with each quarter composed of 13 weeks ending on the last Saturday on, or closest to, March 31, June 30, September 30, and December 31. A 53rd week in the fourth quarter of the fiscal year is occasionally necessary to align with a December 31 calendar year-end.
Segment Reporting	Segment Reporting The Company reports its results in three reportable segments: Research Models and Services (RMS), Discovery and Safety Assessment (DSA), and Manufacturing Solutions (Manufacturing). The Company’s RMS reportable segment includes the Research Models, Research Model Services, and Cell Solutions businesses. Research Models includes the commercial production and sale of small research models, as well as the supply of large research models. Research Model Services includes: Insourcing Solutions (IS), which provides colony management of clients’ research operations (including recruitment, training, staffing, and management services) within the clients’ facilities and utilizing the Charles River Accelerator and Development Lab (CRADL™) offering, which provides vivarium space to clients, Genetically Engineered Models and Services (GEMS), which performs contract breeding and other services associated with genetically engineered models, and Research Animal Diagnostic Services (RADS), which provides health monitoring and diagnostics services related to research models; and Cell Solutions, which supplies controlled, consistent, customized primary cells and blood components derived from normal and mobilized peripheral blood and bone marrow. The Company’s DSA reportable segment includes two businesses: Discovery Services and Safety Assessment. The Company provides regulated and non-regulated DSA services to support the research, development, and regulatory-required safety testing of potential new drugs, including therapeutic discovery and optimization plus in vitro and in vivo studies, laboratory support services, and strategic non-clinical consulting and program management to support product development. The Company’s Manufacturing reportable segment includes Microbial Solutions, which provides in vitro (non-animal) lot-release testing products, microbial detection products, and species identification services and Biologics Solutions (Biologics), which performs specialized testing of biologics (Biologics Testing Solutions) as well as contract development and manufacturing products and services (CDMO).

ACQUISITIONS AND DIVESTITURES (Tables)

6 Months Ended

Jun. 29, 2024

Business Combination, Asset Acquisition, and Joint Venture Formation [Abstract]

Schedule of Purchase Price Allocation and Transaction and Integration Costs

The purchase price allocation was as follows:


	Noveprim Group(1)		SAMDI Tech, Inc.
	November 30, 2023		January 27, 2023
	(in thousands)
Trade receivables	$	1,308	$	513
Inventories	66,500		—
Other current assets (excluding cash)	3,261		75
Property, plant and equipment	36,154		593
Operating lease right-of-use asset, net	104		—
Goodwill (2)	190,024		37,129
Definite-lived intangible assets	9,500		33,070
Other long-term assets (3)	167,907		6
Deferred revenue	—		(43)
Other current liabilities	(16,268)		(351)
Operating lease right-of-use liabilities (Long-term)	(97)		—
Deferred tax liabilities	(12,984)		(8,191)
Other long-term liabilities	(7,579)		—
Redeemable noncontrolling interest (4)	(45,426)		—
Total purchase price allocation	$	392,404	$	62,801

(1) Purchase price allocation is preliminary and subject to change as additional information becomes available concerning the fair value and tax basis of the assets acquired and liabilities assumed, including certain contracts, obligations, and finalization of any working capital adjustments. Any additional adjustments to the purchase price allocation will be made as soon as practicable but no later than one year from the date of acquisition.
(2) The goodwill resulting from these transactions is primarily attributable to the potential growth of the Company’s segments from new customers introduced to the acquired businesses or synergies to be realized from acquiring an internal supplier servicing the DSA business and the assembled workforce of the acquirees, thus is not deductible for tax purposes.
(3) Other long-term assets acquired from the Noveprim acquisition include $167.8 million of biological assets, which will be amortized over an estimated eight-year useful life.
(4) Refer to Note 12. Equity and Noncontrolling Interests for further a description of the 10% noncontrolling interest fair value.

Schedule of Definite-Lived Intangible Assets Acquired as Part of Business Combination

The definite-lived intangible assets acquired were as follows:


	Noveprim Group		SAMDI Tech, Inc.
Definite-Lived Intangible Assets	(in thousands)
Client relationships	$	—	$	23,400
Other intangible assets	9,500		9,670
Total definite-lived intangible assets	$	9,500	$	33,070

Weighted Average Amortization Life	(in years)
Client relationships	—		15
Other intangible assets	7		7
Total definite-lived intangible assets	7		12

REVENUE FROM CONTRACTS WITH CUSTOMERS (Tables)

6 Months Ended

Jun. 29, 2024

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue

The following table disaggregates the Company’s revenue by major business line and timing of transfer of products or services:


	Three Months Ended				Six Months Ended
	June 29, 2024		July 1, 2023		June 29, 2024		July 1, 2023
	(in thousands)
Timing of Revenue Recognition:
RMS
Services and products transferred over time	$	95,299	$	94,458	$	192,348	$	188,097
Services and products transferred at a point in time	111,090		115,490		234,948		221,617
Total RMS revenue	206,389		209,948		427,296		409,714
DSA
Services and products transferred over time	626,785		662,653		1,230,910		1,324,489
Services and products transferred at a point in time	634		804		1,961		1,321
Total DSA revenue	627,419		663,457		1,232,871		1,325,810
Manufacturing
Services and products transferred over time	104,481		100,460		204,539		186,546
Services and products transferred at a point in time	87,828		86,072		172,971		167,240
Total Manufacturing revenue	192,309		186,532		377,510		353,786
Total revenue	$	1,026,117	$	1,059,937	$	2,037,677	$	2,089,310

Revenue by geographic area is as follows:


	U.S.		Europe		Canada		Asia Pacific		Other		Consolidated
	(in thousands)
Three Months Ended:
June 29, 2024	$	571,427	$	271,377	$	125,244	$	50,387	$	7,682	$	1,026,117
July 1, 2023	606,775		272,976		117,647		59,864		2,675		1,059,937

Six Months Ended:
June 29, 2024	$	1,133,744	$	547,696	$	235,645	$	96,159	$	24,433	$	2,037,677
July 1, 2023	1,212,216		540,679		228,253		102,677		5,485		2,089,310

Schedule of Client Receivables, Contract Assets and Contract Liabilities

The following table provides information about client receivables, contract assets, and contract liabilities from contracts with customers:


	June 29, 2024		December 30, 2023
	(in thousands)
Assets from contracts with customers
Client receivables	$	568,283	$	578,077
Unbilled revenue	218,889		228,020
Total	787,172		806,097
Less: Allowance for credit losses	(24,951)		(25,722)
Trade receivables and contract assets, net	$	762,221	$	780,375

Liabilities from contracts with customers
Current deferred revenue	$	247,177	$	241,820
Long-term deferred revenue (included in Other long-term liabilities)	29,139		30,919
Customer contract deposits (included in Other current liabilities)	92,032		85,554

The associated revenue is recognized on a straight-line basis over the term of the lease, which is generally less than one year.


	Three Months Ended				Six Months Ended
	June 29, 2024		July 1, 2023		June 29, 2024		July 1, 2023
	(in thousands)								Affected Line Item in the Unaudited Condensed Consolidated Statements of Income
Lease revenue	$	16,716	$	23,891	$	37,690	$	47,981	Service revenue

Schedule of Allowance for Credit Losses

The following is a summary of the activity of the Company’s allowance for credit losses:


	Six Months Ended
		June 29, 2024		July 1, 2023
		(in thousands)
Beginning balance		$	25,722	$	11,278
Provisions		4,719		9,849
Reductions		(5,490)		(3,087)
Ending balance		$	24,951	$	18,040

SEGMENT AND GEOGRAPHIC INFORMATION (Tables)

6 Months Ended

Jun. 29, 2024

Segment Reporting [Abstract]

Schedule of Revenue and Other Financial Information by Business Segment

The following table presents the results of operations by reportable segment:


	Three Months Ended				Six Months Ended
	June 29, 2024		July 1, 2023		June 29, 2024		July 1, 2023
	(in thousands)
RMS
Revenue	$	206,389	$	209,948	$	427,296	$	409,714
Cost of revenue (excluding amortization of intangible assets)	142,942		127,888		283,867		254,692
Selling, general and administrative	27,597		27,653		58,490		54,711
Amortization of intangible assets	5,902		5,489		11,842		10,984
Operating income	$	29,948	$	48,918	$	73,097	$	89,327


DSA
Revenue	$	627,419	$	663,457	$	1,232,871	$	1,325,810
Cost of revenue (excluding amortization of intangible assets)	418,964		420,551		836,876		832,074
Selling, general and administrative	54,479		63,709		111,338		125,707
Amortization of intangible assets	15,600		17,659		31,442		35,060
Operating income	$	138,376	$	161,538	$	253,215	$	332,969


Manufacturing
Revenue	$	192,309	$	186,532	$	377,510	$	353,786
Cost of revenue (excluding amortization of intangible assets)	110,498		112,522		218,378		225,914
Selling, general and administrative	33,813		38,481		66,660		78,218
Amortization of intangible assets	10,768		11,126		21,561		23,145
Operating income	$	37,230	$	24,403	$	70,911	$	26,509


Unallocated Corporate
Selling, general and administrative	$	53,902	$	69,914	$	119,594	$	115,968
Operating income (1)	$	(53,902)	$	(69,914)	$	(119,594)	$	(115,968)

Consolidated
Revenue	$	1,026,117	$	1,059,937	$	2,037,677	$	2,089,310
Cost of revenue (excluding amortization of intangible assets)	672,404		660,960		1,339,121		1,312,679
Selling, general and administrative	169,791		199,758		356,082		374,604
Amortization of intangible assets	32,270		34,274		64,845		69,190
Operating income	$	151,652	$	164,945	$	277,629	$	332,837


(1) Operating income for unallocated corporate consists of costs associated with departments such as senior executives, corporate accounting, legal, tax, human resources, treasury, and investor relations.

Capital expenditures and depreciation and amortization (related to both intangible assets and certain assets acquired in business combinations) by reportable segment are as follows:


	RMS		DSA		Manufacturing		Unallocated Corporate		Consolidated
	(in thousands)
Capital Expenditures
Three Months Ended:
June 29, 2024	$	9,313	$	19,444	$	10,583	$	146	$	39,486
July 1, 2023	7,493		48,326		10,862		702		67,383
Six Months Ended:
June 29, 2024	$	29,357	$	68,403	$	19,445	$	1,425	$	118,630
July 1, 2023	26,577		113,510		32,600		1,571		174,258

Depreciation and amortization
Three Months Ended:
June 29, 2024	$	16,538	$	47,729	$	20,073	$	1,742	$	86,082
July 1, 2023	13,949		43,124		19,523		1,075		77,671
Six Months Ended:
June 29, 2024	$	34,661	$	93,518	$	39,878	$	3,382	$	171,439
July 1, 2023	27,438		85,574		39,607		2,121		154,740

Schedule of Revenue by Geographic Area

The following table disaggregates the Company’s revenue by major business line and timing of transfer of products or services:


	Three Months Ended				Six Months Ended
	June 29, 2024		July 1, 2023		June 29, 2024		July 1, 2023
	(in thousands)
Timing of Revenue Recognition:
RMS
Services and products transferred over time	$	95,299	$	94,458	$	192,348	$	188,097
Services and products transferred at a point in time	111,090		115,490		234,948		221,617
Total RMS revenue	206,389		209,948		427,296		409,714
DSA
Services and products transferred over time	626,785		662,653		1,230,910		1,324,489
Services and products transferred at a point in time	634		804		1,961		1,321
Total DSA revenue	627,419		663,457		1,232,871		1,325,810
Manufacturing
Services and products transferred over time	104,481		100,460		204,539		186,546
Services and products transferred at a point in time	87,828		86,072		172,971		167,240
Total Manufacturing revenue	192,309		186,532		377,510		353,786
Total revenue	$	1,026,117	$	1,059,937	$	2,037,677	$	2,089,310

Revenue by geographic area is as follows:


	U.S.		Europe		Canada		Asia Pacific		Other		Consolidated
	(in thousands)
Three Months Ended:
June 29, 2024	$	571,427	$	271,377	$	125,244	$	50,387	$	7,682	$	1,026,117
July 1, 2023	606,775		272,976		117,647		59,864		2,675		1,059,937

Six Months Ended:
June 29, 2024	$	1,133,744	$	547,696	$	235,645	$	96,159	$	24,433	$	2,037,677
July 1, 2023	1,212,216		540,679		228,253		102,677		5,485		2,089,310

Schedule of Long-Lived Assets by Geographic Area

Long-lived assets by geographic area are as follows:


	U.S.		Europe		Canada		Asia Pacific		Other		Consolidated
	(in thousands)
Long-lived assets
June 29, 2024	$	950,254	$	405,429	$	153,945	$	68,868	$	35,399	$	1,613,895
December 30, 2023	964,176		407,375		157,483		74,605		36,102		1,639,741

SUPPLEMENTAL CASH FLOW INFORMATION (Tables)

6 Months Ended

Jun. 29, 2024

Supplemental Cash Flow Information [Abstract]

Schedule of Supplemental Cash Flow Information


	Six Months Ended
	June 29, 2024		July 1, 2023
	(in thousands)
Cash paid for income taxes	$	71,722	$	61,816
Cash paid for interest	65,630		66,563
Non-cash investing activities:
Purchases of Property, plant and equipment included in Accounts payable and Accrued liabilities	$	25,278	$	47,850
Assets acquired under finance leases	3,159		154

Cash, cash equivalents and restricted cash is included in the accompanying unaudited balance sheet as follows:


	June 29, 2024		December 30, 2023
	(in thousands)
Supplemental cash flow information:
Cash and cash equivalents	$	179,213	$	276,771

Restricted cash included in Other current assets	325		5,803
Restricted cash included in Other assets	1,466		1,906
Cash, cash equivalents, and restricted cash, end of period	$	181,004	$	284,480

INVENTORY (Tables)

6 Months Ended

Jun. 29, 2024

Inventory Disclosure [Abstract]

Schedule of Composition of Inventories

The composition of inventories is as follows:


	June 29, 2024		December 30, 2023
	(in thousands)
Raw materials and supplies	$	43,238	$	42,296
Work in process	57,923		59,727
Finished products	247,950		278,236
Inventories	$	349,111	$	380,259

PROPERTY, PLANT AND EQUIPMENT, NET (Tables)

6 Months Ended

Jun. 29, 2024

Property, Plant and Equipment [Abstract]

Schedule of Composition of Property, Plant and Equipment, Net

The composition of property, plant and equipment, net is as follows:


	June 29, 2024		December 30, 2023
	(in thousands)
Land	$	78,812	$	79,546
Buildings (1)	1,061,408		1,053,915
Machinery and equipment (1)	1,007,210		984,867
Leasehold improvements	381,879		366,556
Furniture and fixtures	32,060		31,284
Computer hardware and software (1)	259,889		254,413
Vehicles (1)	7,149		6,746
Construction in progress	182,823		197,723
Total	3,011,230		2,975,050
Less: Accumulated depreciation	(1,397,335)		(1,335,309)
Property, plant and equipment, net	$	1,613,895	$	1,639,741

(1) These balances include assets under finance leases.

VENTURE CAPITAL AND STRATEGIC EQUITY INVESTMENTS - (Tables)

6 Months Ended

Jun. 29, 2024

Equity Method Investments and Joint Ventures [Abstract]

Schedule of Equity Method Investments

Venture capital investments are summarized below:


	Six Months Ended
	June 29, 2024		July 1, 2023
	(in thousands)
Beginning balance	$	121,158	$	129,012
Capital contributions	6,479		8,702
Distributions	(16,100)		(9,679)
Gains (losses)	1,789		(8,429)
Foreign currency translation	(249)		466
Ending balance	$	113,077	$	120,072

The Company also invests, with minority positions, directly in equity of predominantly privately held companies. Strategic investments are summarized below:


	Six Months Ended
	June 29, 2024		July 1, 2023
	(in thousands)
Beginning balance	$	122,653	$	182,590
Purchase of investments	2,140		13,710
Distributions	—		(4,146)
Gain (loss)	(5,265)		3,253
Reduction for acquisition of entity (1)	—		(12,635)
Foreign currency translation	(746)		(2,563)
Ending balance	$	118,782	$	180,209

(1) Refer to Note 2. Acquisitions for further discussion on the acquisition of SAMDI.

FAIR VALUE (Tables)

6 Months Ended

Jun. 29, 2024

Fair Value Disclosures [Abstract]

Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis

Assets and liabilities measured at fair value on a recurring basis are summarized below:


	June 29, 2024
	Level 1		Level 2		Level 3		Total
Current assets measured at fair value:	(in thousands)
Cash equivalents	$	—	$	7,257	$	—	$	7,257
Term deposit	—		26,983		—		26,983
Other assets:
Life insurance policies	—		45,210		—		45,210
Interest rate swap	—		1,338		—		1,338
Total assets measured at fair value	$	—	$	80,788	$	—	$	80,788



Other long-term liabilities measured at fair value:
Contingent consideration	$	—	$	—	$	38,335	$	38,335

Total liabilities measured at fair value	$	—	$	—	$	38,335	$	38,335


	December 30, 2023
	Level 1		Level 2		Level 3		Total
Current assets measured at fair value:	(in thousands)
Cash equivalents	$	—	$	29	$	—	$	29
Other assets:
Life insurance policies	—		40,912		—		40,912
Interest rate swap	—		966		—		966
Total assets measured at fair value	$	—	$	41,907	$	—	$	41,907

Other long-term liabilities measured at fair value
Contingent consideration	$	—	$	—	$	33,265	$	33,265

Total liabilities measured at fair value	$	—	$	—	$	33,265	$	33,265

The book value and fair value of the Company’s Senior Notes is summarized below:


	June 29, 2024				December 30, 2023
	Book Value		Fair Value		Book Value		Fair Value
	(in thousands)
4.25% Senior Notes due 2028	$	500,000	$	468,750	$	500,000	$	478,100
3.75% Senior Notes due 2029	500,000		453,750		500,000		458,100
4.00% Senior Notes due 2031	500,000		445,000		500,000		449,350

Schedule of Rollforward of Contingent Consideration Related to Previous Acquisitions

The following table provides a rollforward of the contingent consideration related to the Company’s acquisitions.


	Six Months Ended
	June 29, 2024		July 1, 2023
	(in thousands)
Beginning balance	$	33,265	$	13,431

Payments	—		(15,130)
Total gains or losses (realized/unrealized):
Adjustment of previously recorded contingent liability	5,070		1,810
Foreign currency translation	—		(111)
Ending balance	$	38,335	$	—

GOODWILL AND INTANGIBLE ASSETS (Tables)

6 Months Ended

Jun. 29, 2024

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

The following table provides a rollforward of the Company’s goodwill:


	RMS		DSA (1)		Manufacturing		Total
	(in thousands)
December 30, 2023	$	497,474	$	1,662,434	$	935,137	$	3,095,045
Acquisitions	—		17,675		—		17,675

Foreign exchange	(536)		(29,251)		(3,240)		(33,027)
June 29, 2024	$	496,938	$	1,650,858	$	931,897	$	3,079,693
(1) DSA includes accumulated impairment losses of $1 billion, which were recognized in fiscal years 2008 and 2010.

Schedule of Intangible Assets

The following table displays intangible assets, net by major class:


	June 29, 2024						December 30, 2023
	Gross		Accumulated Amortization		Net		Gross		Accumulated Amortization		Net
	(in thousands)
Client relationships	$	1,518,194	$	(766,261)	$	751,933	$	1,528,780	$	(721,322)	$	807,458
Technology	140,737		(114,410)		26,327		142,190		(111,764)		30,426
Trademarks and trade names	11,849		(5,098)		6,751		11,878		(4,568)		7,310
Backlog	3,100		(2,792)		308		3,100		(2,177)		923
Other	42,866		(28,056)		14,810		43,611		(25,677)		17,934
Intangible assets	$	1,716,746	$	(916,617)	$	800,129	$	1,729,559	$	(865,508)	$	864,051

DEBT AND OTHER FINANCING ARRANGEMENTS (Tables)

6 Months Ended

Jun. 29, 2024

Debt Disclosure [Abstract]

Schedule of Long-term Debt and Finance Lease Obligations

Long-term debt, net and finance leases consists of the following:


	June 29, 2024		December 30, 2023
	(in thousands)
Revolving facility	$	879,498	$	1,129,243
4.25% Senior Notes due 2028	500,000		500,000
3.75% Senior Notes due 2029	500,000		500,000
4.00% Senior Notes due 2031	500,000		500,000
Other debt	16,125		9,575
Finance leases	29,637		28,550
Total debt and finance leases	2,425,260		2,667,368
Less:
Current portion of long-term debt	435		3,172
Current portion of finance leases	2,778		2,398
Current portion of long-term debt and finance leases	3,213		5,570
Long-term debt and finance leases	2,422,047		2,661,798
Debt discount and debt issuance costs	(12,667)		(14,651)
Long-term debt, net and finance leases	$	2,409,380	$	2,647,147

EQUITY AND NONCONTROLLING INTERESTS (Tables)

6 Months Ended

Jun. 29, 2024

Equity [Abstract]

Schedule of Reconciliation of the Numerator and Denominator in the Computations of the Basic and Diluted Earnings Per Share

The following table reconciles the numerator and denominator in the computations of basic and diluted earnings per share:


	Three Months Ended				Six Months Ended
	June 29, 2024		July 1, 2023		June 29, 2024		July 1, 2023
	(in thousands)
Numerator:
Net income	$	94,261	$	99,443	$	168,743	$	203,397
Less: Net income attributable to noncontrolling interests	180		2,423		1,702		3,246
Net income available to Charles River Laboratories International, Inc.	94,081		97,020		167,041		200,151

Calculation of net income per share attributable to common shareholders of Charles River Laboratories International, Inc.
Net income available to Charles River Laboratories International, Inc.	$	94,081	$	97,020	$	167,041	$	200,151
Less: Adjustment of redeemable noncontrolling interest (1)	301		—		702		—
Less: Incremental dividends attributable to noncontrolling interest holders (2)	3,792		—		9,022		—
Net income available to Charles River Laboratories International, Inc. common shareholders	$	89,988	$	97,020	$	157,317	$	200,151

Denominator:
Weighted-average shares outstanding - Basic	51,551		51,216		51,494		51,157
Effect of dilutive securities:
Stock options, restricted stock units and performance share units	295		251		316		225
Weighted-average shares outstanding - Diluted	51,846		51,467		51,810		51,382

Anti-dilutive common stock equivalents (3)	506		594		482		589

(1) Represents adjustments of redeemable noncontrolling interest that impact retained earnings.
(2) Represents incremental undeclared dividends attributable to Noveprim noncontrolling interest holders who are entitled to preferential dividends for fiscal year 2024.
(3) These common stock equivalents were outstanding for the periods presented, but were not included in the computation of diluted EPS for those periods because their inclusion would have had an anti-dilutive effect.

Schedule of Accumulated Other Comprehensive Income (Loss)

Changes to each component of accumulated other comprehensive income (loss), net of income taxes, are as follows:


	Foreign Currency Translation Adjustment and Other		Pension and Other Post-Retirement Benefit Plans		Net Unrealized (Loss) Gain on Cash Flow Hedge		Total
	(in thousands)
December 30, 2023	$	(149,999)	$	(47,167)	$	739	$	(196,427)
Other comprehensive income (loss) before reclassifications	(81,840)		686		372		(80,782)

Net current period other comprehensive income (loss)	(81,840)		686		372		(80,782)
Income tax expense (benefit)	(7,759)		170		89		(7,500)
June 29, 2024	$	(224,080)	$	(46,651)	$	1,022	$	(269,709)

INCOME TAXES (Tables)

6 Months Ended

Jun. 29, 2024

Income Tax Disclosure [Abstract]

Schedule of Prepaid and Accrued Tax Positions

The Company’s prepaid and accrued tax positions are as follows:


	June 29, 2024		December 30, 2023		Affected Line Item in the Unaudited Condensed Consolidated Balance Sheets
	(in thousands)
Prepaid income tax	$	71,242	$	59,715	Other current assets
Accrued income taxes	35,126		38,819		Other current liabilities

RESTRUCTURING AND ASSET IMPAIRMENTS (Tables)

6 Months Ended

Jun. 29, 2024

Restructuring and Related Activities [Abstract]

Schedule of Restructuring Costs

The following table presents restructuring costs by reportable segment:


	Three Months Ended				Six Months Ended
	June 29, 2024		July 1, 2023		June 29, 2024		July 1, 2023
	(in thousands)
RMS	$	10,228	$	—	$	17,615	$	—
DSA	3,766		—		10,257		(2)
Manufacturing	2,657		2,699		4,288		6,187
Unallocated corporate	1,304		—		2,794		—
Total	$	17,955	$	2,699	$	34,954	$	6,185

The following table presents restructuring costs as included within the Company’s unaudited condensed consolidated statements of income:


	June 29, 2024						July 1, 2023
	Severance and Transition Costs		Asset Impairments and Other Costs		Total		Severance and Transition Costs		Asset Impairments and Other Costs		Total
	(in thousands)
Three Months Ended
Cost of services provided (excluding amortization of intangible assets)	$	2,870	$	1,926	$	4,796	$	2,361	$	—	$	2,361
Cost of products sold (excluding amortization of intangible assets)	69		9,154		9,223		36		182		218
Selling, general and administrative	2,958		978		3,936		120		—		120
Total restructuring costs	$	5,897	$	12,058	$	17,955	$	2,517	$	182	$	2,699

Six Months Ended
Cost of services provided (excluding amortization of intangible assets)	$	7,680	$	3,034	$	10,714	$	2,928	$	—	$	2,928
Cost of products sold (excluding amortization of intangible assets)	747		10,484		11,231		54		2,746		2,800
Selling, general and administrative	6,507		6,502		13,009		449		8		457
Total restructuring costs	$	14,934	$	20,020	$	34,954	$	3,431	$	2,754	$	6,185

Schedule of Rollforward of Company's Severance and Retention Costs Liability

The following table provides a rollforward for the Company’s accrued restructuring costs related to all restructuring activities:


	Severance and Transition Costs		Asset Impairments		Other Costs		Total
	(in thousands)
Six Months Ended June 29, 2024
Beginning balance	$	4,175	$	—	$	875	$	5,050
Expense	14,934		14,181		5,839		34,954
Payments / utilization	(9,323)		—		(5,067)		(14,390)
Other non-cash adjustments	—		(14,181)		(772)		(14,953)
Foreign currency adjustments	(57)		—		—		(57)
Ending Balance	$	9,729	$	—	$	875	$	10,604

Six Months Ended July 1, 2023
Beginning balance	$	356	$	—	$	944	$	1,300
Expense	3,431		2,479		275		6,185
Payments / utilization	(811)		—		(303)		(1,114)
Other non-cash adjustments	—		(2,479)		—		(2,479)
Foreign currency adjustments	9		—		—		9
Ending Balance	$	2,985	$	—	$	916	$	3,901

BASIS OF PRESENTATION (Details)	6 Months Ended
BASIS OF PRESENTATION (Details)	Jun. 29, 2024 subsegment segment
Number of reportable segments \| segment	3
Discover and Safety Assessment Segment
Number of businesses in reportable segment \| subsegment	2

ACQUISITIONS AND DIVESTITURES - Narrative (Details) - USD ($)		3 Months Ended		6 Months Ended		12 Months Ended	23 Months Ended
	Jan. 27, 2023	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023	Dec. 31, 2022	Nov. 30, 2023
Business Acquisition [Line Items]
Cash portion of consideration transferred				$ 5,479,000	$ 50,166,000
Noveprim Group
Business Acquisition [Line Items]
Percentage of voting interests acquired							41.00%
Equity interest acquired							90.00%
Business combination, equity stake percentage						49.00%
Purchases of additional equity interests, net						$ 90,000,000.0
Contingent liability						$ 5,000,000
Purchase price							$ 392,400,000
Additional cash paid							144,600,000
Business combination, consideration transferred, other							209,500,000
Gain in equity equal to the excess fair value of additional equity interest purchased		$ 9,800,000					113,000,000.0
Contingent consideration							33,300,000
Business combination deferred purchase price							12,000,000.0
Adjustments for working capital/debt		7,000,000.0		7,000,000.0			13,800,000
Goodwill, purchase accounting adjustments		17,600,000
Consideration contingent upon future performance							$ 55,000,000.0
Business combination, remaining equity to purchase							10.00%
Call option term, period after sixth anniversary							1 month
Put option term, period after first anniversary							12 months
Transaction and integration costs		700,000	$ 1,400,000	900,000	2,200,000
Noveprim Group \| Minimum
Business Acquisition [Line Items]
Business combination, redemption price							$ 47,000,000.0
Noveprim Group \| Maximum
Business Acquisition [Line Items]
Business combination, redemption price							$ 54,000,000.0
SAMDI Tech, Inc.
Business Acquisition [Line Items]
Business combination, equity stake percentage	20.00%
Transaction and integration costs		$ 0	$ 300,000	$ 0	$ 300,000
Cash portion of consideration transferred	$ 62,800,000
Cash acquired	400,000
Value of previously owned interest in acquiree	$ 12,600,000

ACQUISITIONS AND DIVESTITURES - Schedule of Purchase Price Allocation (Details) - USD ($) $ in Thousands	Jun. 29, 2024	Dec. 30, 2023	Nov. 30, 2023	Jan. 27, 2023
Business Acquisition [Line Items]
Goodwill	$ 3,079,693	$ 3,095,045
Noveprim Group
Business Acquisition [Line Items]
Trade receivables			$ 1,308
Inventories			66,500
Other current assets (excluding cash)			3,261
Property, plant and equipment			36,154
Operating lease right-of-use asset, net			104
Goodwill			190,024
Definite-lived intangible assets			9,500
Other long-term assets			167,907
Deferred revenue			0
Other current liabilities			(16,268)
Operating lease right-of-use liabilities (Long-term)			(97)
Deferred tax liabilities			(12,984)
Other long-term liabilities			(7,579)
Redeemable noncontrolling interest			(45,426)
Total purchase price allocation			392,404
Biological assets			$ 167,800
Biological assets, useful life			8 years
Business combination, remaining equity to purchase			10.00%
SAMDI Tech, Inc.
Business Acquisition [Line Items]
Trade receivables				$ 513
Inventories				0
Other current assets (excluding cash)				75
Property, plant and equipment				593
Operating lease right-of-use asset, net				0
Goodwill				37,129
Definite-lived intangible assets				33,070
Other long-term assets				6
Deferred revenue				(43)
Other current liabilities				(351)
Operating lease right-of-use liabilities (Long-term)				0
Deferred tax liabilities				(8,191)
Other long-term liabilities				0
Redeemable noncontrolling interest				0
Total purchase price allocation				$ 62,801

ACQUISITIONS AND DIVESTITURES - Schedule of Definite-Lived Intangible Assets (Details) - USD ($) $ in Thousands	Nov. 30, 2023	Jan. 27, 2023
Noveprim Group
Business Acquisition [Line Items]
Definite-Lived Intangible Assets	$ 9,500
Weighted Average Amortization Life	7 years
SAMDI Tech, Inc.
Business Acquisition [Line Items]
Definite-Lived Intangible Assets		$ 33,070
Weighted Average Amortization Life		12 years
Client relationships \| Noveprim Group
Business Acquisition [Line Items]
Definite-Lived Intangible Assets	$ 0
Weighted Average Amortization Life	0 years
Client relationships \| SAMDI Tech, Inc.
Business Acquisition [Line Items]
Definite-Lived Intangible Assets		$ 23,400
Weighted Average Amortization Life		15 years
Other intangible assets \| Noveprim Group
Business Acquisition [Line Items]
Definite-Lived Intangible Assets	$ 9,500
Weighted Average Amortization Life	7 years
Other intangible assets \| SAMDI Tech, Inc.
Business Acquisition [Line Items]
Definite-Lived Intangible Assets		$ 9,670
Weighted Average Amortization Life		7 years

REVENUE FROM CONTRACTS WITH CUSTOMERS - Schedule of Disaggregation of Revenues by Major Business Line (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Disaggregation of Revenue [Line Items]
Total revenue	$ 1,026,117	$ 1,059,937	$ 2,037,677	$ 2,089,310
RMS
Disaggregation of Revenue [Line Items]
Total revenue	206,389	209,948	427,296	409,714
RMS \| Services and products transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	95,299	94,458	192,348	188,097
RMS \| Services and products transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	111,090	115,490	234,948	221,617
DSA
Disaggregation of Revenue [Line Items]
Total revenue	627,419	663,457	1,232,871	1,325,810
DSA \| Services and products transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	626,785	662,653	1,230,910	1,324,489
DSA \| Services and products transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	634	804	1,961	1,321
Manufacturing
Disaggregation of Revenue [Line Items]
Total revenue	192,309	186,532	377,510	353,786
Manufacturing \| Services and products transferred over time
Disaggregation of Revenue [Line Items]
Total revenue	104,481	100,460	204,539	186,546
Manufacturing \| Services and products transferred at a point in time
Disaggregation of Revenue [Line Items]
Total revenue	$ 87,828	$ 86,072	$ 172,971	$ 167,240

REVENUE FROM CONTRACTS WITH CUSTOMERS - Schedule of Client Receivables, Contract Assets and Contract Liabilities (Details) - USD ($) $ in Thousands	Jun. 29, 2024	Dec. 30, 2023	Dec. 31, 2022
Revenue from Contract with Customer [Abstract]
Client receivables	$ 568,283	$ 578,077
Unbilled revenue	218,889	228,020	$ 204,000
Total	787,172	806,097
Less: Allowance for credit losses	(24,951)	(25,722)
Trade receivables and contract assets, net	762,221	780,375
Current deferred revenue	247,177	241,820
Long-term deferred revenue (included in Other long-term liabilities)	29,139	30,919
Customer contract deposits (included in Other current liabilities)	$ 92,032	$ 85,554

REVENUE FROM CONTRACTS WITH CUSTOMERS - Narrative (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Dec. 30, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Percentage of unbilled revenue billed during period	85.00%	85.00%
Unbilled revenue	$ 218,889		$ 228,020	$ 204,000
Percentage of contract liabilities recognized as revenue during period	70.00%	75.00%
Contract liabilities			273,000	$ 290,000
Unpaid advanced client billings	$ 46,000		$ 41,000
Net provision expense	4,100	$ 9,200
Performance obligations expected to be satisfied	$ 856,600
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2024-06-30
Disaggregation of Revenue [Line Items]
Revenue, remaining performance obligation, percentage	50.00%
Performance obligations expected to be satisfied, expected timing	12 months

REVENUE FROM CONTRACTS WITH CUSTOMERS - Schedule of Allowance for Credit Losses (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 25,722	$ 11,278
Provisions	4,719	9,849
Reductions	(5,490)	(3,087)
Ending balance	$ 24,951	$ 18,040

REVENUE FROM CONTRACTS WITH CUSTOMERS - Schedule of Lease Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Revenue from Contract with Customer [Abstract]
Lease revenue	$ 16,716	$ 23,891	$ 37,690	$ 47,981

SEGMENT AND GEOGRAPHIC INFORMATION - Schedule of Revenue and Other Financial Information by Reportable Segment (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024 USD ($)	Jul. 01, 2023 USD ($)	Jun. 29, 2024 USD ($) segment	Jul. 01, 2023 USD ($)
Segment Reporting [Abstract]
Number of reportable segments \| segment			3
Segment Reporting Information [Line Items]
Revenue	$ 1,026,117	$ 1,059,937	$ 2,037,677	$ 2,089,310
Cost of revenue (excluding amortization of intangible assets)	672,404	660,960	1,339,121	1,312,679
Selling, general and administrative	169,791	199,758	356,082	374,604
Amortization of intangible assets	32,270	34,274	64,845	69,190
Operating income	151,652	164,945	277,629	332,837
Capital Expenditures	39,486	67,383	118,630	174,258
Depreciation and amortization	86,082	77,671	171,439	154,740
Unallocated corporate
Segment Reporting Information [Line Items]
Selling, general and administrative	53,902	69,914	119,594	115,968
Operating income	(53,902)	(69,914)	(119,594)	(115,968)
Capital Expenditures	146	702	1,425	1,571
Depreciation and amortization	1,742	1,075	3,382	2,121
RMS
Segment Reporting Information [Line Items]
Revenue	206,389	209,948	427,296	409,714
RMS \| Operating Segments
Segment Reporting Information [Line Items]
Revenue	206,389	209,948	427,296	409,714
Cost of revenue (excluding amortization of intangible assets)	142,942	127,888	283,867	254,692
Selling, general and administrative	27,597	27,653	58,490	54,711
Amortization of intangible assets	5,902	5,489	11,842	10,984
Operating income	29,948	48,918	73,097	89,327
Capital Expenditures	9,313	7,493	29,357	26,577
Depreciation and amortization	16,538	13,949	34,661	27,438
DSA
Segment Reporting Information [Line Items]
Revenue	627,419	663,457	1,232,871	1,325,810
DSA \| Operating Segments
Segment Reporting Information [Line Items]
Revenue	627,419	663,457	1,232,871	1,325,810
Cost of revenue (excluding amortization of intangible assets)	418,964	420,551	836,876	832,074
Selling, general and administrative	54,479	63,709	111,338	125,707
Amortization of intangible assets	15,600	17,659	31,442	35,060
Operating income	138,376	161,538	253,215	332,969
Capital Expenditures	19,444	48,326	68,403	113,510
Depreciation and amortization	47,729	43,124	93,518	85,574
Manufacturing
Segment Reporting Information [Line Items]
Revenue	192,309	186,532	377,510	353,786
Manufacturing \| Operating Segments
Segment Reporting Information [Line Items]
Revenue	192,309	186,532	377,510	353,786
Cost of revenue (excluding amortization of intangible assets)	110,498	112,522	218,378	225,914
Selling, general and administrative	33,813	38,481	66,660	78,218
Amortization of intangible assets	10,768	11,126	21,561	23,145
Operating income	37,230	24,403	70,911	26,509
Capital Expenditures	10,583	10,862	19,445	32,600
Depreciation and amortization	$ 20,073	$ 19,523	$ 39,878	$ 39,607

SEGMENT AND GEOGRAPHIC INFORMATION - Schedule of Revenue and Long-Lived Assets by Geographic Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023	Dec. 30, 2023
Segment Reporting Information [Line Items]
Revenue	$ 1,026,117	$ 1,059,937	$ 2,037,677	$ 2,089,310
Long-lived assets	1,613,895		1,613,895		$ 1,639,741
U.S.
Segment Reporting Information [Line Items]
Revenue	571,427	606,775	1,133,744	1,212,216
Long-lived assets	950,254		950,254		964,176
Europe
Segment Reporting Information [Line Items]
Revenue	271,377	272,976	547,696	540,679
Long-lived assets	405,429		405,429		407,375
Canada
Segment Reporting Information [Line Items]
Revenue	125,244	117,647	235,645	228,253
Long-lived assets	153,945		153,945		157,483
Asia Pacific
Segment Reporting Information [Line Items]
Revenue	50,387	59,864	96,159	102,677
Long-lived assets	68,868		68,868		74,605
Other
Segment Reporting Information [Line Items]
Revenue	7,682	$ 2,675	24,433	$ 5,485
Long-lived assets	$ 35,399		$ 35,399		$ 36,102

SUPPLEMENTAL CASH FLOW INFORMATION - Schedule of Non-Cash Investing Activities (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023
Supplemental Cash Flow Information [Abstract]
Cash paid for income taxes	$ 71,722	$ 61,816
Cash paid for interest	65,630	66,563
Purchases of Property, plant and equipment included in Accounts payable and Accrued liabilities	25,278	47,850
Assets acquired under finance leases	$ 3,159	$ 154

SUPPLEMENTAL CASH FLOW INFORMATION - Schedule of Cash, Cash Equivalents and Restricted Cash (Details) - USD ($) $ in Thousands	Jun. 29, 2024	Dec. 30, 2023	Jul. 01, 2023	Dec. 31, 2022
Supplemental Cash Flow Information [Abstract]
Cash and cash equivalents	$ 179,213	$ 276,771
Restricted cash included in Other current assets	325	5,803
Restricted cash included in Other assets	1,466	1,906
Cash, cash equivalents, and restricted cash, end of period	$ 181,004	$ 284,480	$ 208,777	$ 241,214

INVENTORY (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
INVENTORY (Details) - USD ($) $ in Thousands	Jun. 29, 2024	Jun. 29, 2024	Dec. 30, 2023
Inventory Disclosure [Abstract]
Raw materials and supplies	$ 43,238	$ 43,238	$ 42,296
Work in process	57,923	57,923	59,727
Finished products	247,950	247,950	278,236
Inventories	349,111	349,111	$ 380,259
Amortization of inventory step up	$ 3,500	$ 10,600

PROPERTY, PLANT AND EQUIPMENT, NET (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023	Dec. 30, 2023
Property, Plant and Equipment [Line Items]
Total	$ 3,011,230		$ 3,011,230		$ 2,975,050
Less: Accumulated depreciation	(1,397,335)		(1,397,335)		(1,335,309)
Property, plant and equipment, net	1,613,895		1,613,895		1,639,741
Depreciation	47,600	$ 43,400	93,300	$ 85,500
Land
Property, Plant and Equipment [Line Items]
Total	78,812		78,812		79,546
Buildings
Property, Plant and Equipment [Line Items]
Total	1,061,408		1,061,408		1,053,915
Machinery and equipment
Property, Plant and Equipment [Line Items]
Total	1,007,210		1,007,210		984,867
Leasehold improvements
Property, Plant and Equipment [Line Items]
Total	381,879		381,879		366,556
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Total	32,060		32,060		31,284
Computer hardware and software
Property, Plant and Equipment [Line Items]
Total	259,889		259,889		254,413
Vehicles
Property, Plant and Equipment [Line Items]
Total	7,149		7,149		6,746
Construction in progress
Property, Plant and Equipment [Line Items]
Total	$ 182,823		$ 182,823		$ 197,723

VENTURE CAPITAL AND STRATEGIC EQUITY INVESTMENTS (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023
Schedule of Equity Method Investments [Roll Forward]
Beginning balance	$ 243,811
Ending balance	231,859
Venture Capital Funds
Schedule of Equity Method Investments [Roll Forward]
Beginning balance	121,158	$ 129,012
Capital contributions	6,479	8,702
Distributions	(16,100)	(9,679)
Gains (losses)	1,789	(8,429)
Foreign currency translation	(249)	466
Ending balance	113,077	120,072
Strategic Investments
Schedule of Equity Method Investments [Roll Forward]
Beginning balance	122,653	182,590
Purchase of investments	2,140	13,710
Distributions	0	(4,146)
Gains (losses)	(5,265)	3,253
Reduction for acquisition of entity	0	(12,635)
Foreign currency translation	(746)	(2,563)
Ending balance	$ 118,782	$ 180,209

FAIR VALUE - Schedule of Fair Value of Assets and Liabilities (Details) - Fair Value, Recurring - USD ($) $ in Thousands	Jun. 29, 2024	Dec. 30, 2023
Current assets measured at fair value:
Cash equivalents	$ 7,257	$ 29
Term deposit	26,983
Other assets:
Life insurance policies	45,210	40,912
Interest rate swap	1,338	966
Total assets measured at fair value	80,788	41,907
Other long-term liabilities measured at fair value:
Contingent consideration	38,335	33,265
Total liabilities measured at fair value	38,335	33,265
Level 1
Current assets measured at fair value:
Cash equivalents	0	0
Term deposit	0
Other assets:
Life insurance policies	0	0
Interest rate swap	0	0
Total assets measured at fair value	0	0
Other long-term liabilities measured at fair value:
Contingent consideration	0	0
Total liabilities measured at fair value	0	0
Level 2
Current assets measured at fair value:
Cash equivalents	7,257	29
Term deposit	26,983
Other assets:
Life insurance policies	45,210	40,912
Interest rate swap	1,338	966
Total assets measured at fair value	80,788	41,907
Other long-term liabilities measured at fair value:
Contingent consideration	0	0
Total liabilities measured at fair value	0	0
Level 3
Current assets measured at fair value:
Cash equivalents	0	0
Term deposit	0
Other assets:
Life insurance policies	0	0
Interest rate swap	0	0
Total assets measured at fair value	0	0
Other long-term liabilities measured at fair value:
Contingent consideration	38,335	33,265
Total liabilities measured at fair value	$ 38,335	$ 33,265

FAIR VALUE - Schedule of Contingent Consideration (Details) - Contingent Consideration - Level 3 - USD ($) $ in Thousands	6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 33,265	$ 13,431
Payments	0	(15,130)
Adjustment of previously recorded contingent liability	5,070	1,810
Foreign currency translation	0	(111)
Ending balance	$ 38,335	$ 0

FAIR VALUE - Narrative (Details) - USD ($) $ in Thousands	Jun. 29, 2024	Dec. 30, 2023	Jul. 01, 2023	Dec. 31, 2022
Designated as Hedging Instrument \| Interest Rate Swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Notional amount	$ 500,000
Derivative, fixed interest rate	4.65%
Level 3 \| Contingent Consideration
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of contingent consideration	$ 38,335	$ 33,265	$ 0	$ 13,431
Weighted average probability percentage of achieving maximum target	70.00%
Level 3 \| Average Volatility \| Contingent Consideration
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, measurement input	0.05
Level 3 \| Weighted Average Cost of Capital \| Contingent Consideration
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration, measurement input	0.08
Level 3 \| Maximum \| Contingent Consideration
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of contingent consideration	$ 55,000

FAIR VALUE - Schedule of Fair Value of Debt (Details) - Senior Notes - USD ($) $ in Thousands	Jun. 29, 2024	Dec. 30, 2023
4.25% Senior Notes due 2028
Debt Instrument [Line Items]
Stated interest rate	4.25%	4.25%
4.25% Senior Notes due 2028 \| Book Value
Debt Instrument [Line Items]
Debt instrument value	$ 500,000	$ 500,000
4.25% Senior Notes due 2028 \| Fair Value
Debt Instrument [Line Items]
Debt instrument value	$ 468,750	$ 478,100
3.75% Senior Notes due 2029
Debt Instrument [Line Items]
Stated interest rate	3.75%	3.75%
3.75% Senior Notes due 2029 \| Book Value
Debt Instrument [Line Items]
Debt instrument value	$ 500,000	$ 500,000
3.75% Senior Notes due 2029 \| Fair Value
Debt Instrument [Line Items]
Debt instrument value	$ 453,750	$ 458,100
4.00% Senior Notes due 2031
Debt Instrument [Line Items]
Stated interest rate	4.00%	4.00%
4.00% Senior Notes due 2031 \| Book Value
Debt Instrument [Line Items]
Debt instrument value	$ 500,000	$ 500,000
4.00% Senior Notes due 2031 \| Fair Value
Debt Instrument [Line Items]
Debt instrument value	$ 445,000	$ 449,350

GOODWILL AND INTANGIBLE ASSETS - Schedule of Rollforward of Goodwill (Details) $ in Thousands	6 Months Ended
	Jun. 29, 2024 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 3,095,045
Acquisitions	17,675
Foreign exchange	(33,027)
Ending balance	3,079,693
RMS
Goodwill [Roll Forward]
Beginning balance	497,474
Acquisitions	0
Foreign exchange	(536)
Ending balance	496,938
DSA
Goodwill [Roll Forward]
Beginning balance	1,662,434
Acquisitions	17,675
Foreign exchange	(29,251)
Ending balance	1,650,858
Goodwill, impaired, accumulated impairment loss	1,000,000
Manufacturing
Goodwill [Roll Forward]
Beginning balance	935,137
Acquisitions	0
Foreign exchange	(3,240)
Ending balance	$ 931,897

GOODWILL AND INTANGIBLE ASSETS - Schedule of Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 29, 2024	Dec. 30, 2023
Other intangible assets
Gross	$ 1,716,746	$ 1,729,559
Accumulated Amortization	(916,617)	(865,508)
Net	800,129	864,051
Client relationships
Other intangible assets
Gross	1,518,194	1,528,780
Accumulated Amortization	(766,261)	(721,322)
Net	751,933	807,458
Technology
Other intangible assets
Gross	140,737	142,190
Accumulated Amortization	(114,410)	(111,764)
Net	26,327	30,426
Trademarks and trade names
Other intangible assets
Gross	11,849	11,878
Accumulated Amortization	(5,098)	(4,568)
Net	6,751	7,310
Backlog
Other intangible assets
Gross	3,100	3,100
Accumulated Amortization	(2,792)	(2,177)
Net	308	923
Other
Other intangible assets
Gross	42,866	43,611
Accumulated Amortization	(28,056)	(25,677)
Net	$ 14,810	$ 17,934

GOODWILL AND INTANGIBLE ASSETS - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Goodwill and Intangible Assets Disclosure [Abstract]
Amortization of intangible assets	$ 32,270	$ 34,274	$ 64,845	$ 69,190

DEBT AND OTHER FINANCING ARRANGEMENTS - Schedule of Long-Term Debt (Details) - USD ($) $ in Thousands	Jun. 29, 2024	Dec. 30, 2023
Debt Instrument [Line Items]
Finance leases	$ 29,637	$ 28,550
Total debt and finance leases	2,425,260	2,667,368
Current portion of long-term debt	435	3,172
Current portion of finance leases	2,778	2,398
Current portion of long-term debt and finance leases	3,213	5,570
Long-term debt and finance leases	2,422,047	2,661,798
Debt discount and debt issuance costs	(12,667)	(14,651)
Long-term debt, net and finance leases	2,409,380	2,647,147
Revolving Facility
Debt Instrument [Line Items]
Long-term debt, gross	$ 879,498	$ 1,129,243
Senior Notes \| 4.25% Senior Notes due 2028
Debt Instrument [Line Items]
Stated interest rate	4.25%	4.25%
Long-term debt, gross	$ 500,000	$ 500,000
Senior Notes \| 3.75% Senior Notes due 2029
Debt Instrument [Line Items]
Stated interest rate	3.75%	3.75%
Long-term debt, gross	$ 500,000	$ 500,000
Senior Notes \| 4.00% Senior Notes due 2031
Debt Instrument [Line Items]
Stated interest rate	4.00%	4.00%
Long-term debt, gross	$ 500,000	$ 500,000
Other Debt
Debt Instrument [Line Items]
Long-term debt, gross	$ 16,125	$ 9,575

DEBT AND OTHER FINANCING ARRANGEMENTS - Narrative (Details) - USD ($) $ in Millions	Jun. 29, 2024	Dec. 30, 2023
Debt Instrument [Line Items]
Weighted average interest rate	4.64%	4.93%
Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding	$ 21.2	$ 21.6

EQUITY AND NONCONTROLLING INTERESTS - Schedule of Earnings Per Share (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Numerator:
Net income	$ 94,261	$ 99,443	$ 168,743	$ 203,397
Less: Net income attributable to noncontrolling interests	180	2,423	1,702	3,246
Net income available to Charles River Laboratories International, Inc.	94,081	97,020	167,041	200,151
Calculation of net income per share attributable to common shareholders of Charles River Laboratories International, Inc.
Net income available to Charles River Laboratories International, Inc.	94,081	97,020	167,041	200,151
Less: Adjustment of redeemable noncontrolling interest	301	0	702	0
Less: Incremental dividends attributable to noncontrolling interest holders	3,792	0	9,022	0
Net income available to Charles River Laboratories International, Inc. common shareholders	$ 89,988	$ 97,020	$ 157,317	$ 200,151
Denominator:
Weighted-average shares outstanding - Basic (in shares)	51,551	51,216	51,494	51,157
Effect of dilutive securities:
Stock options, restricted stock units and performance share units (in shares)	295	251	316	225
Weighted-average shares outstanding - Diluted (in shares)	51,846	51,467	51,810	51,382
Anti-dilutive common stock equivalents (in shares)	506	594	482	589

EQUITY AND NONCONTROLLING INTERESTS - Narrative (Details) - USD ($) shares in Millions	6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Aug. 02, 2024
Treasury Shares and Accelerated Stock Repurchase Program (ASR) [Line Items]
Shares acquired to satisfy minimum individual statutory tax withholdings for vesting of equity instruments (in shares)	0.1	0.1
Shares acquired to satisfy minimum individual statutory tax withholdings for vesting of equity instruments	$ 18,300,000	$ 24,000,000.0
Authorized Share Repurchase Program
Treasury Shares and Accelerated Stock Repurchase Program (ASR) [Line Items]
Aggregate authorization of share repurchase program	1,300,000,000
Remaining authorized repurchase amount	$ 129,100,000
New Stock Repurchase Authorization \| Subsequent Event
Treasury Shares and Accelerated Stock Repurchase Program (ASR) [Line Items]
Aggregate authorization of share repurchase program			$ 1,000,000,000

EQUITY AND NONCONTROLLING INTERESTS - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Accumulated Other Comprehensive Income (Loss), before Tax [Roll Forward]
Beginning balance	$ 3,646,150	$ 3,113,883	$ 3,602,276	$ 2,981,078
Income tax expense (benefit)	(2,027)	937	(7,500)	(101)
Ending balance	3,727,018	3,257,555	3,727,018	3,257,555
Foreign Currency Translation Adjustment and Other
Accumulated Other Comprehensive Income (Loss), before Tax [Roll Forward]
Beginning balance			(149,999)
Other comprehensive income (loss) before reclassifications			(81,840)
Net current period other comprehensive income (loss)			(81,840)
Income tax expense (benefit)			(7,759)
Ending balance	(224,080)		(224,080)
Pension and Other Post-Retirement Benefit Plans
Accumulated Other Comprehensive Income (Loss), before Tax [Roll Forward]
Beginning balance			(47,167)
Other comprehensive income (loss) before reclassifications			686
Net current period other comprehensive income (loss)			686
Income tax expense (benefit)			170
Ending balance	(46,651)		(46,651)
Net Unrealized (Loss) Gain on Cash Flow Hedge
Accumulated Other Comprehensive Income (Loss), before Tax [Roll Forward]
Beginning balance			739
Other comprehensive income (loss) before reclassifications			372
Net current period other comprehensive income (loss)			372
Income tax expense (benefit)			89
Ending balance	1,022		1,022
Total
Accumulated Other Comprehensive Income (Loss), before Tax [Roll Forward]
Beginning balance	(249,919)	(239,124)	(196,427)	(262,057)
Other comprehensive income (loss) before reclassifications			(80,782)
Net current period other comprehensive income (loss)			(80,782)
Income tax expense (benefit)			(7,500)
Ending balance	$ (269,709)	$ (208,269)	$ (269,709)	$ (208,269)

EQUITY AND NONCONTROLLING INTERESTS - Nonredeemable and Redeemable Noncontrolling Interest - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended				6 Months Ended
	Jun. 30, 2022	Jun. 29, 2024	Mar. 30, 2024	Dec. 30, 2023	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023	Nov. 30, 2023	Dec. 31, 2022	Dec. 28, 2019
Schedule of Investments [Line Items]
Incremental dividends attributed to noncontrolling interest holders		$ 3,792			$ 0	$ 9,022	$ 0
Adjustment of redeemable noncontrolling interests to redemption value		496	$ 4,807
Additional Paid-In Capital
Schedule of Investments [Line Items]
Adjustment of redeemable noncontrolling interests to redemption value		195	4,406
Retained Earnings
Schedule of Investments [Line Items]
Adjustment of redeemable noncontrolling interests to redemption value		$ 301	401
Noveprim Group
Schedule of Investments [Line Items]
Percentage of voting interests acquired								41.00%
Noveprim Group
Schedule of Investments [Line Items]
Equity interest		90.00%				90.00%
Noncontrolling interest ownership percentage		10.00%				10.00%
Contractually defined redemption value		$ 46,100				$ 46,100
Dividend fair value		8,000				8,000
Incremental dividends attributed to noncontrolling interest holders						9,000
Noveprim Group \| Additional Paid-In Capital
Schedule of Investments [Line Items]
Adjustment of redeemable noncontrolling interests to redemption value						1,800
Noveprim Group \| Retained Earnings
Schedule of Investments [Line Items]
Adjustment of redeemable noncontrolling interests to redemption value						700
Noveprim Group \| Minimum
Schedule of Investments [Line Items]
Contractually defined redemption value		47,000				47,000
Noveprim Group \| Maximum
Schedule of Investments [Line Items]
Contractually defined redemption value		54,000				$ 54,000
Supplier
Schedule of Investments [Line Items]
Equity interest										80.00%
Noncontrolling interest ownership percentage	10.00%									20.00%
Contractually defined redemption value			12,000
Additional ownership percentage acquired by parent	10.00%
Purchase of additional equity interest	$ 15,000	$ 12,000
Supplier \| Additional Paid-In Capital
Schedule of Investments [Line Items]
Adjustment of redeemable noncontrolling interests to redemption value			$ 2,800
Vital River
Schedule of Investments [Line Items]
Equity interest									92.00%
Noncontrolling interest ownership percentage				8.00%
Payments for repurchase of redeemable noncontrolling interest				$ 4,800
Redeemable noncontrolling interest, purchase price payable				$ 24,400

INCOME TAXES - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
INCOME TAXES - Narrative (Details) - USD ($) $ in Millions	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Income Tax Disclosure [Abstract]
Effective tax rate	21.20%	22.70%	22.80%	21.70%
Increase in unrecognized tax benefits	$ 0.6
Unrecognized tax benefits	24.0		$ 24.0
Increase in unrecognized tax benefits that would impact effective tax rate	0.4
Unrecognized tax benefits that would impact effective tax rate	21.1		21.1
Accrued interest on unrecognized tax benefits	1.6		1.6
Decrease in unrecognized tax benefits that are reasonably possibly over the next twelve-month period	$ 5.0		$ 5.0

INCOME TAXES - Schedule of Prepaid and Accrued Tax Positions (Details) - USD ($) $ in Thousands	Jun. 29, 2024	Dec. 30, 2023
Income Tax Disclosure [Abstract]
Prepaid income tax	$ 71,242	$ 59,715
Accrued income taxes	$ 35,126	$ 38,819

RESTRUCTURING AND ASSET IMPAIRMENTS - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023	Dec. 30, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Restructuring charges	$ 17,955	$ 2,699	$ 34,954	$ 6,185
Restructuring and related cost, cost incurred	65,000		65,000
Restructuring reserve	10,604	3,901	10,604	3,901	$ 5,050	$ 1,300
Severance and Transition Costs
Segment Reporting Information [Line Items]
Restructuring charges			14,934	3,431
Restructuring reserve	9,729	$ 2,985	9,729	$ 2,985	4,175	$ 356
Accrued Compensation \| Severance and Transition Costs
Segment Reporting Information [Line Items]
Restructuring reserve	$ 10,600		$ 10,600		$ 5,100

RESTRUCTURING AND ASSET IMPAIRMENTS - Schedule of Restructuring Costs by Reportable Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Segment Reporting Information [Line Items]
Total	$ 17,955	$ 2,699	$ 34,954	$ 6,185
Operating Segments \| RMS
Segment Reporting Information [Line Items]
Total	10,228	0	17,615	0
Operating Segments \| DSA
Segment Reporting Information [Line Items]
Total	3,766	0	10,257	(2)
Operating Segments \| Manufacturing
Segment Reporting Information [Line Items]
Total	2,657	2,699	4,288	6,187
Unallocated corporate
Segment Reporting Information [Line Items]
Total	$ 1,304	$ 0	$ 2,794	$ 0

RESTRUCTURING AND ASSET IMPAIRMENTS - Schedule of Restructuring Costs for Productivity Improvement (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Restructuring Cost and Reserve [Line Items]
Severance and Transition Costs	$ 5,897	$ 2,517	$ 14,934	$ 3,431
Asset Impairments and Other Costs	12,058	182	20,020	2,754
Total	17,955	2,699	34,954	6,185
Cost of services provided (excluding amortization of intangible assets)
Restructuring Cost and Reserve [Line Items]
Severance and Transition Costs	2,870	2,361	7,680	2,928
Asset Impairments and Other Costs	1,926	0	3,034	0
Total	4,796	2,361	10,714	2,928
Cost of products sold (excluding amortization of intangible assets)
Restructuring Cost and Reserve [Line Items]
Severance and Transition Costs	69	36	747	54
Asset Impairments and Other Costs	9,154	182	10,484	2,746
Total	9,223	218	11,231	2,800
Selling, general and administrative
Restructuring Cost and Reserve [Line Items]
Severance and Transition Costs	2,958	120	6,507	449
Asset Impairments and Other Costs	978	0	6,502	8
Total	$ 3,936	$ 120	$ 13,009	$ 457

RESTRUCTURING AND ASSET IMPAIRMENTS - Schedule of Rollforward of Severance and Transition and Lease Obligation Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jun. 29, 2024	Jul. 01, 2023
Restructuring Reserve [Roll Forward]
Beginning balance			$ 5,050	$ 1,300
Expense	$ 17,955	$ 2,699	34,954	6,185
Payments / utilization			(14,390)	(1,114)
Other non-cash adjustments			(14,953)	(2,479)
Foreign currency adjustments			(57)	9
Ending Balance	10,604	3,901	10,604	3,901
Severance and Transition Costs
Restructuring Reserve [Roll Forward]
Beginning balance			4,175	356
Expense			14,934	3,431
Payments / utilization			(9,323)	(811)
Other non-cash adjustments			0	0
Foreign currency adjustments			(57)	9
Ending Balance	9,729	2,985	9,729	2,985
Asset Impairments
Restructuring Reserve [Roll Forward]
Beginning balance			0	0
Expense			14,181	2,479
Payments / utilization			0	0
Other non-cash adjustments			(14,181)	(2,479)
Foreign currency adjustments			0	0
Ending Balance	0	0	0	0
Other Costs
Restructuring Reserve [Roll Forward]
Beginning balance			875	944
Expense			5,839	275
Payments / utilization			(5,067)	(303)
Other non-cash adjustments			(772)	0
Foreign currency adjustments			0	0
Ending Balance	$ 875	$ 916	$ 875	$ 916

COMMITMENTS AND CONTINGENCIES (Details) $ in Millions	Jun. 29, 2024 USD ($)
US Fish and Wildlife Service \| Pending Litigation
Loss Contingencies [Line Items]
Inventory, non-human primates	$ 27

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CRL Charles River Laboratories International Inc