PLEXUS CORP — Director's Dealing 2025

Nov 14, 2025

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: PLEXUS CORP (PLXS)
CIK: 0000785786
Period of Report: 2025-11-12

Reporting Person: Mihm Oliver K. (Exec VP & COO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-11-12	Common Stock, $.01 par value	M	5023	—	Acquired	24230	Direct
2025-11-12	Common Stock, $.01 par value	F	2361	$146.24	Disposed	21869	Direct
2025-11-12	Common Stock, $.01 par value	G	1100	—	Disposed	20769	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-11-12	Performance Stock Units	$	A	1383	Acquired		Common Stock, $.01 par value (1383)	Direct
2025-11-12	Performance Stock Units	$	M	5023	Disposed		Common Stock, $.01 par value (5023)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock, $.01 par value	981	Indirect

Footnotes

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.

F3: Shares of Plexus Corp. common stock were given as a bona fide gift.