[Form 4] Penumbra Inc Insider Trading Activity

Rhea-AI Filing Summary

Johanna Roberts, EVP, General Counsel & Secretary of Penumbra Inc (PEN), reported multiple open-market sales executed 10/01/2025 under a Rule 10b5-1 trading plan. The transactions total 600 shares sold in separate blocks at weighted-average prices reported per block (ranging across the disclosures). Following these disposals, Ms. Roberts' beneficial ownership is reported as 64,257 shares. The Form 4 is signed and dated 10/03/2025. The filing notes that a portion of the shares sold were subject to vesting and that the filer will provide trade-level details upon request.

Positive

• Sales executed under a Rule 10b5-1 plan, indicating a pre-established trading arrangement
• Reporting person disclosed intent to provide full trade-level details upon request

Negative

• Portion of shares sold were subject to vesting, indicating some disposals involved restricted holdings

Insights

Insider Transactions Analyst

Insider sold 600 shares under a 10b5-1 plan on 10/01/2025.

The filing documents systematic disposals by an officer using a pre-established Rule 10b5-1 plan, which provides an affirmative defense under insider trading rules. The total of the reported sales is 600 shares, executed in multiple trades with weighted-average prices disclosed per block.

This is a routine disclosure of an officer sale; the filer states some shares were subject to vesting, which clarifies that not all holdings were fully vested at time of sale.

Corporate Governance Specialist

Officer-level sale documented; remaining beneficial ownership = 64,257 shares.

The report confirms the reporting person’s role (EVP, Gen. Counsel & Secretary) and that the sales were executed pursuant to a written plan. The signature on 10/03/2025 completes the Section 16 disclosure obligations for these transactions.

Because the filing commits to provide detailed trade-level data on request, stakeholders can obtain exact per-trade prices and quantities from the filer or SEC staff if needed.

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
Estimated average burden
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).

X

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^*

Roberts Johanna

(Last) (First) (Middle)

ONE PENUMBRA PLACE

(Street)

ALAMEDA CA 94502

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Penumbra Inc [ PEN ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	EVP, Gen. Counsel & Secretary

3. Date of Earliest Transaction (Month/Day/Year)
10/01/2025

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	10/01/2025		S(1)		24	D	$243.61(2)	64,833(3)	D
Common Stock	10/01/2025		S(1)		32	D	$244.93(4)	64,801(3)	D
Common Stock	10/01/2025		S(1)		35	D	$245.68(5)	64,766(3)	D
Common Stock	10/01/2025		S(1)		35	D	$246.93(6)	64,731(3)	D
Common Stock	10/01/2025		S(1)		125	D	$247.79(7)	64,606(3)	D
Common Stock	10/01/2025		S(1)		23	D	$248.67(8)	64,583(3)	D
Common Stock	10/01/2025		S(1)		14	D	$249.71(9)	64,569(3)	D
Common Stock	10/01/2025		S(1)		66	D	$250.84(10)	64,503(3)	D
Common Stock	10/01/2025		S(1)		144	D	$251.81(11)	64,359(3)	D
Common Stock	10/01/2025		S(1)		41	D	$252.36(12)	64,318(3)	D
Common Stock	10/01/2025		S(1)		20	D	$254.05(13)	64,298(3)	D
Common Stock	10/01/2025		S(1)		36	D	$254.96(14)	64,262(3)	D
Common Stock	10/01/2025		S(1)		5	D	$256.63(15)	64,257(3)	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:

1. The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan.

2. This transaction was executed in multiple trades at prices ranging from $243.26 to $244.06. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the SEC staff, the Issuer or a security holder of the Issuer, upon request, full information regarding the number of shares and prices at which the transaction was effected.

3. A portion of these shares is subject to vesting.

4. This transaction was executed in multiple trades at prices ranging from $244.34 to $245.22. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the SEC staff, the Issuer or a security holder of the Issuer, upon request, full information regarding the number of shares and prices at which the transaction was effected.

5. This transaction was executed in multiple trades at prices ranging from $245.37 to $246.09. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the SEC staff, the Issuer or a security holder of the Issuer, upon request, full information regarding the number of shares and prices at which the transaction was effected.

6. This transaction was executed in multiple trades at prices ranging from $246.47 to $247.22. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the SEC staff, the Issuer or a security holder of the Issuer, upon request, full information regarding the number of shares and prices at which the transaction was effected.

7. This transaction was executed in multiple trades at prices ranging from $247.32 to $248.24. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the SEC staff, the Issuer or a security holder of the Issuer, upon request, full information regarding the number of shares and prices at which the transaction was effected.

8. This transaction was executed in multiple trades at prices ranging from $248.30 to $249.21. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the SEC staff, the Issuer or a security holder of the Issuer, upon request, full information regarding the number of shares and prices at which the transaction was effected.

9. This transaction was executed in multiple trades at prices ranging from $249.42 to $249.82. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the SEC staff, the Issuer or a security holder of the Issuer, upon request, full information regarding the number of shares and prices at which the transaction was effected.

10. This transaction was executed in multiple trades at prices ranging from $250.32 to $251.20. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the SEC staff, the Issuer or a security holder of the Issuer, upon request, full information regarding the number of shares and prices at which the transaction was effected.

11. This transaction was executed in multiple trades at prices ranging from $251.35 to $252.17. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the SEC staff, the Issuer or a security holder of the Issuer, upon request, full information regarding the number of shares and prices at which the transaction was effected.

12. This transaction was executed in multiple trades at prices ranging from $252.26 to $252.52. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the SEC staff, the Issuer or a security holder of the Issuer, upon request, full information regarding the number of shares and prices at which the transaction was effected.

13. This transaction was executed in multiple trades at prices ranging from $253.93 to $254.19. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the SEC staff, the Issuer or a security holder of the Issuer, upon request, full information regarding the number of shares and prices at which the transaction was effected.

14. This transaction was executed in multiple trades at prices ranging from $254.76 to $255.23. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the SEC staff, the Issuer or a security holder of the Issuer, upon request, full information regarding the number of shares and prices at which the transaction was effected.

15. This transaction was executed in multiple trades at prices ranging from $256.59 to $256.64. The price reported above reflects the weighted average sale price. The Reporting Person hereby undertakes to provide to the SEC staff, the Issuer or a security holder of the Issuer, upon request, full information regarding the number of shares and prices at which the transaction was effected.

Remarks:

	/s/ Johanna Roberts	10/03/2025
	** 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 did Penumbra insider Johanna Roberts sell (PEN)?

Ms. Roberts sold a total of 600 shares of Penumbra common stock in multiple transactions on 10/01/2025.

Were the sales made under a 10b5-1 plan?

Yes. The Form 4 states the sales were effected pursuant to the reporting person's Rule 10b5-1 trading plan.

How many shares does Johanna Roberts beneficially own after the trades?

The filing reports beneficial ownership of 64,257 shares following the reported transactions.

Are the exact per-trade prices and quantities available?

The Form 4 reports weighted-average prices per block and states the filer will provide full trade-level details to the SEC staff, issuer, or a security holder upon request.

What is Johanna Roberts' role at Penumbra?

She is reported as EVP, General Counsel & Secretary and is an officer of the company.