Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 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 that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person * Narayan Shruthi 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) President (Last) (First) (Middle) ONE PENUMBRA PLACE 3. Date of Earliest Transaction (Month/Day/Year) 08/17/2026 (Street) ALAMEDA, CA 94502 4. If Amendment, Date 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 (City) (State) (Zip) 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 08/17/2026 A 3,060(1) A $ 0 33,880(2)(3) D

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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 Underlying Securities (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 of Derivative Security: 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

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Narayan Shruthi ONE PENUMBRA PLACE ALAMEDA, CA 94502			President

Signatures

/s/ Johanna Roberts, as attorney-in-fact for Shruthi Narayan		08/19/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	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).
(1)	On August 17, 2026, the Reporting Person was granted 3,060 restricted stock units ("RSUs") under the Issuer's Amended and Restated 2014 Equity Incentive Plan, of which 1/4 of the RSUs (each, an "Equity Grant Tranche") will vest equally on an annual basis, beginning on August 15, 2027, subject to continued service by the Reporting Person on the applicable vesting date. Notwithstanding the foregoing, if the Closing (as defined in that certain Agreement and Plan of Merger, dated as of January 14, 2026, among the Issuer, Boston Scientific Corporation and Pinehurst Merger Sub, Inc.) occurs, the RSUs will vest as follows: the first two Equity Grant Tranches (to the extent not already vested) shall vest on the Closing, and the last two Equity Grant Tranches (to the extent not already vested) shall vest on the first and second anniversaries of the Closing, respectively, subject to continued service by the Reporting Person on the applicable vesting date.
(2)	A portion of these shares is subject to vesting.
(3)	Includes 65 shares purchased by the Reporting Person under the Issuer's Employee Stock Purchase Plan on May 19, 2026.

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