Statement of Changes in Beneficial Ownership (4)

FORM 4

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

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Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person * BUCKHOUT SCOTT A.	2. Issuer Name and Ticker or Trading Symbol CIRCOR INTERNATIONAL INC [ CIR ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director                    _____ 10% Owner __X__ Officer (give title below)    _____ Other (specify below) President and CEO
(Last)          (First)          (Middle) 30 CORPORATE DR., SUITE 200	3. Date of Earliest Transaction (MM/DD/YYYY) 3/5/2021
(Street) BURLINGTON, MA 01803-4238 (City)        (State)        (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	6. Individual or Joint/Group Filing (Check Applicable Line) _X _ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. Code (Instr. 8)		4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	3/5/2021		M		7301.00	A	(1)	60563.00	D
Common Stock	3/5/2021		F		3124.00	D	(1)	57439.00	D
Common Stock	3/5/2021		M		29057.00	A	(2)	86496.00	D
Common Stock	3/5/2021		F		12887.00	D	(2)	73609.00	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Unit (MSP)	$0.00	3/5/2021		M			7301.00	3/5/2021	3/5/2028	Common Stock	7301.00	(1)	0.00	D
Performance RSUs	$0.00	3/5/2021		M			29057.00	3/5/2021	3/5/2028	Common Stock	29057.00	(2)	0.00	D

Explanation of Responses:
(1)	The Restricted Stock Units (RSUs), the conversion of which are reported herein, were issued to the Reporting Person pursuant to issuers Management Stock Purchase Plan (MSPP) on 3/5/2018 utilizing a fair market value (FMV) of a share of the issuers stock of $42.62. RSUs are issued in whole units on the basis of a 33 percent discount from FMV of the issuers common stock on the date the underlying bonus is determined ($28.56 in this case) and generally vest 3 years from date of grant, at which time they convert into shares of common stock unless the executive has previously elected a longer deferral period. Acquisition price reflects the 33% discount to FMV of issuers stock on grant date. This report reflects the acquisition by the Reporting Person of the common stock underlying the RSUs minus sufficient shares withheld to pay income taxes.
(2)	The shares issued herein to the Reporting Person by the issuer are the result of actual achievement against the metrics associated with a Performance Based RSU grant made by the issuer on 3/5/2018. These metrics consisted of targets for 2018-2020 Average Return on Invested Capital and Average Adjusted Operating Margin with potential payouts ranging from 0% to 200%. This report reflects the acquisition of shares by the Reporting Person based on 103% achievement minus sufficient shares withheld to pay applicable income taxes.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
BUCKHOUT SCOTT A. 30 CORPORATE DR. SUITE 200 BURLINGTON, MA 01803-4238	X		President and CEO

Signatures
/s/ Tanya Dawkins, attorney-in-fact		3/8/2021
**Signature of Reporting Person		Date