Patrick John Jermain - 11 Nov 2025 Form 4 Insider Report for PLEXUS CORP (PLXS)

Role: Exec. VP & CFO
Signature: /s/ Patrick J. Jermain, by Kate A. Gitter, Attorney-in-Fact
Issuer symbol: PLXS
Transactions as of: 11 Nov 2025
Net transactions value: -$731,055
Form type: 4
Filing time: 13 Nov 2025, 16:59:37 UTC
Previous filing: 29 Oct 2025
Next filing: 03 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Jermain Patrick John	Exec. VP & CFO	ONE PLEXUS WAY, NEENAH	/s/ Patrick J. Jermain, by Kate A. Gitter, Attorney-in-Fact	13 Nov 2025	0001607273

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	PLXS	Common Stock, $.01 par value	Sale	$287,070	-2,000	-11%	$143.54	16,961	11 Nov 2025	Direct
transaction	PLXS	Common Stock, $.01 par value	Options Exercise		+6,458	+38%		23,419	12 Nov 2025	Direct	F2
transaction	PLXS	Common Stock, $.01 par value	Tax liability	$443,985	-3,036	-13%	$146.24	20,383	12 Nov 2025	Direct
holding	PLXS	Common Stock, $.01 par value						3,719	11 Nov 2025	401(k)	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	PLXS	Performance Stock Units	Award		+1,778	+21%		10,398	12 Nov 2025	Common Stock, $.01 par value	1,778		Direct	F2
transaction	PLXS	Performance Stock Units	Options Exercise		-6,458	-62%		3,940	12 Nov 2025	Common Stock, $.01 par value	6,458		Direct	F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	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.
F2	Based on Company performance during the three-year performance period, 138% of the portion of the Performance Stock Units ("PSUs") granted in fiscal 2023 related to economic return goals vested. The three-year performance period for the portion of the PSUs that vests based on the relative total shareholder return ("TSR") of the Company's common stock as compared to companies in the S&P 400 Index has yet to conclude. As previously disclosed, the reporting person had the opportunity to earn up to 200% of the targeted amount based on ER originally reported and has the opportunity to earn up to 150% of the targeted amount based on TSR originally reported.

Content

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.

Based on Company performance during the three-year performance period, 138% of the portion of the Performance Stock Units ("PSUs") granted in fiscal 2023 related to economic return goals vested. The three-year performance period for the portion of the PSUs that vests based on the relative total shareholder return ("TSR") of the Company's common stock as compared to companies in the S&P 400 Index has yet to conclude. As previously disclosed, the reporting person had the opportunity to earn up to 200% of the targeted amount based on ER originally reported and has the opportunity to earn up to 150% of the targeted amount based on TSR originally reported.