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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3235-0287

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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 * Ninivaggi Angelo Michael Jr	2. Issuer Name and Ticker or Trading Symbol PLEXUS CORP [ PLXS ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director                    _____ 10% Owner __X__ Officer (give title below)    _____ Other (specify below) Exec VP, CAO, Gen Coun & Secy
(Last)          (First)          (Middle) ONE PLEXUS WAY	3. Date of Earliest Transaction (MM/DD/YYYY) 5/8/2020
(Street) NEENAH, WI 54956 (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, $.01 par value								1456	I	401(k) (1)
Common Stock, $.01 par value	5/8/2020		M		3800	A	$45.35	45455	D
Common Stock, $.01 par value	5/8/2020		M		3800	A	$45.445	49255	D
Common Stock, $.01 par value	5/8/2020		S		7600	D	$63.4122 (2)	41655	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
Options to Buy	$45.35	5/8/2020		M			3800	(3)	7/25/2026	Common Stock	3800	$0.00	0	D
Options to Buy	$45.445	5/8/2020		M			3800	(3)	10/31/2026	Common Stock	3800	$0.00	0	D

Explanation of Responses:
(1)	Shares of Plexus Corp. common stock held in the Plexus Corp. 401(k) Retirement Plan as of the last report from the Plan's trustee.
(2)	This transaction was executed in multiple trades at prices ranging from $63.00 to $63.80 per share. The reported price reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.
(3)	Options granted under the Plexus Corp. 2016 Omnibus Incentive Plan, or a predecessor plan, which qualifies under Rule 16b-3; now fully vested.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Ninivaggi Angelo Michael Jr ONE PLEXUS WAY NEENAH, WI 54956			Exec VP, CAO, Gen Coun & Secy

Signatures
Angelo M. Ninivaggi, by Kate A. Gitter, Attorney-in-Fact		5/12/2020
**Signature of Reporting Person		Date