Penumbra (PEN) director Arani Bose discloses Rule 10b5-1 stock sales

Rhea-AI Filing Summary

Penumbra Inc. director Arani Bose reported multiple open-market sales of Penumbra common stock on 12/11/2025, carried out under a pre-arranged Rule 10b5-1 trading plan. The transactions, all coded as sales, were executed in several tranches, including 2,030 shares at a weighted average price of $305.19, 4,946 shares at $306.6, and 3,523 shares at $311.47, with other trades priced in the general range of $305–$312 per share.

Following one of the reported transactions, the filing shows 258,462 shares of Penumbra common stock beneficially owned indirectly through Bose Family Holdings II, LLC, and a portion of these shares is subject to vesting. The filing emphasizes that several trades were executed in multiple lots within stated price ranges, with the weighted average prices reported and full trade details available upon request.

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^*

Bose Arani

(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)
12/11/2025

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	12/11/2025		S(1)		2,030	D	$305.19(2)	271,432	I	By LLC(3)
Common Stock	12/11/2025		S(1)		4,946	D	$306.6(4)	266,486	I	By LLC(3)
Common Stock	12/11/2025		S(1)		520	D	$307.1(5)	265,966	I	By LLC(3)
Common Stock	12/11/2025		S(1)		4	D	$308	265,962	I	By LLC(3)
Common Stock	12/11/2025		S(1)		2,082	D	$310.5(6)	263,880	I	By LLC(3)
Common Stock	12/11/2025		S(1)		3,523	D	$311.47(7)	260,357	I	By LLC(3)
Common Stock	12/11/2025		S(1)		1,895	D	$312.2(8)	258,462	I	By LLC(3)
Common Stock								558(9)	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 $305.00 to $305.96. 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. Shares are held by Bose Family Holdings II, LLC.

4. This transaction was executed in multiple trades at prices ranging from $306.01 to $306.93. 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 $307.00 to $307.67. 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 $310.00 to $310.98. 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 $311.00 to $311.98. 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 $312.00 to $312.62. 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. A portion of these shares is subject to vesting.

Remarks:

	/s/ Johanna Roberts, as attorney-in-fact for Arani Bose	12/15/2025
	** 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.
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FAQ

What insider transaction did Penumbra (PEN) disclose in this filing?

The filing discloses that director Arani Bose reported multiple open-market sales of Penumbra common stock on 12/11/2025, all coded as sale transactions.

Were the Penumbra (PEN) insider sales made under a trading plan?

Yes. The filing states that the sales were effected pursuant to the reporting person's Rule 10b5-1 trading plan, and the related checkbox for a Rule 10b5-1 contract or plan is referenced.

What were some of the share amounts and prices in the Penumbra (PEN) insider sales?

The sales included several tranches, such as 2,030 shares at a weighted average price of $305.19, 4,946 shares at $306.6, 2,082 shares at $310.5, and 1,895 shares at $312.2. Other reported trades were within the approximate $305–$312 per-share range.

How many Penumbra (PEN) shares does the insider continue to hold after the reported transactions?

After one of the reported transactions, the form shows 258,462 shares of Penumbra common stock beneficially owned indirectly, held through Bose Family Holdings II, LLC.

What is the nature of the reporting person’s relationship to Penumbra (PEN)?

The reporting person is identified as a Director of Penumbra Inc., and the shares involved in the reported transactions are held indirectly through an LLC.

Are any of the Penumbra (PEN) shares referenced in the filing subject to vesting?

Yes. The explanation notes that a portion of these shares is subject to vesting, indicating that some of the reported holdings are not yet fully vested.

How were the reported Penumbra (PEN) sale prices calculated in the filing?

Several transactions were executed in multiple trades within stated price ranges, such as $305.00 to $305.96 or $311.00 to $311.98. The filing reports the weighted average sale price for each transaction and notes that detailed trade data is available upon request.