Penumbra (PEN) director Harpreet Grewal reports 186-share 10b5-1 sale

Rhea-AI Filing Summary

Penumbra Inc. director Harpreet Grewal reported a small insider sale of common stock. On January 6, 2026, Grewal sold 186 shares of Penumbra common stock at a price of $312.64 per share under a pre-arranged Rule 10b5-1 trading plan. After this transaction, Grewal directly beneficially owned 8,230 shares of Penumbra common stock.

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^*

Grewal Harpreet

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
01/06/2026

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	01/06/2026		S(1)		186	D	$312.64	8,230	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.

Remarks:

	/s/ Johanna Roberts, as attorney-in-fact for Harpreet Grewal	01/08/2026
	** 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 insider stock transaction did Penumbra (PEN) disclose in this filing?

Penumbra (PEN) disclosed that director Harpreet Grewal sold 186 shares of the company’s common stock on January 6, 2026 at a price of $312.64 per share.

Who is the reporting person in this Penumbra (PEN) Form 4 filing?

The reporting person is Harpreet Grewal, who serves as a director of Penumbra Inc. and is not listed as an officer or 10% owner in this filing.

How many Penumbra (PEN) shares does Harpreet Grewal own after the reported sale?

Following the reported transaction, Harpreet Grewal beneficially owned 8,230 shares of Penumbra common stock, held with direct ownership.

Was the Penumbra (PEN) insider sale made under a Rule 10b5-1 trading plan?

Yes. The footnote states that the sales were effected pursuant to the reporting person’s Rule 10b5-1 trading plan, indicating they were made under a pre-established plan.

What type of security was involved in Harpreet Grewal’s Penumbra (PEN) transaction?

The transaction involved Penumbra Inc. common stock, as reported in Table I for non-derivative securities.

Is this Penumbra (PEN) filing a joint report by multiple insiders?

No. The filing indicates it is a Form filed by one reporting person, covering only the holdings and transaction of Harpreet Grewal.