[Form 4] Plexus Corp Insider Trading Activity

Rhea-AI Filing Summary

Plexus Corp (PLXS) insider sale disclosed. Angelo M. Ninivaggi Jr., listed as Director and Executive Vice President/CAO/General Counsel & Secretary, sold 1,576 shares of Plexus common stock on 08/25/2025 at a price of $137.775 per share. After the transaction he beneficially owned 24,495 shares. The Form 4 was signed by an attorney-in-fact on 08/27/2025.

Positive

• Timely disclosure of the insider sale via Form 4 signed 08/27/2025
• Clear role identification showing the reporting person is a Director and company officer

Negative

• Insider disposition of 1,576 shares reduces the reporting person's direct ownership
• No information provided on whether the sale was under a Rule 10b5-1 plan or for other specified reason

Insights

Financial Analyst

TL;DR: Routine, disclosed sale by a senior executive; transaction is material only to insider ownership, not company operations.

The filing reports a single open-market sale of 1,576 shares at $137.775, leaving the reporting person with 24,495 shares. This is a standard Section 16 filing documenting an insider disposition. There are no derivative transactions or other compensatory grants disclosed. The size of the sale relative to total outstanding shares is not provided, so market impact cannot be assessed from this form alone.

Corporate Governance Expert

TL;DR: Timely compliance with Section 16 reporting; sale raises governance transparency but no governance red flags in form.

The Form 4 shows the reporting person identified roles and reported the sale with signature via attorney-in-fact, indicating procedural compliance. The disclosure does not show related-party transfers, option exercises, or unusual derivative activity. Without additional context on trading plans or blackout periods, the form itself reflects standard disclosure practice.

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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

OMB APPROVAL

OMB Number:			3235-0287
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hours per response:			0.5

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

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Ninivaggi Angelo Michael Jr

(Last) (First) (Middle)

ONE PLEXUS WAY

(Street)

NEENAH WI 54956

(City) (State) (Zip)

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

3. Date of Earliest Transaction (Month/Day/Year)
08/25/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

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. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction 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	08/25/2025		S		1,576	D	$137.775	24,495	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction 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 (Month/Day/Year)		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: 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

Explanation of Responses:

Remarks:

	/s/ Angelo M. Ninivaggi, by Kate A. Gitter, Attorney-in-Fact	08/27/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What transaction did Angelo M. Ninivaggi Jr. report on Form 4 for PLXS?

He reported a sale of 1,576 shares of Plexus common stock on 08/25/2025 at $137.775 per share.

How many Plexus (PLXS) shares does the reporting person own after the sale?

The Form 4 states the reporting person beneficially owned 24,495 shares following the reported transaction.

What positions does the reporting person hold at Plexus (PLXS)?

The filing lists the reporting person as a Director and an officer with titles: Executive Vice President, Chief Accounting Officer, General Counsel & Secretary.

When was the Form 4 signed and filed for this PLXS transaction?

The signature block shows the form was signed by an attorney-in-fact and dated 08/27/2025.

Does the Form 4 report any derivative transactions or option exercises for PLXS?

No. Table II (derivative securities) contains no reported transactions; only a non-derivative sale is disclosed.