Adam Elsesser - Sep 3, 2025 Form 4 Insider Report for Penumbra Inc (PEN)

Role
CEO, Director
Signature
/s/ Johanna Roberts, as attorney-in-fact for Adam Elsesser
Stock symbol
PEN
Transactions as of
Sep 3, 2025
Transactions value $
-$3,421,057
Form type
4
Date filed
9/4/2025, 07:36 PM
Previous filing
Aug 22, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Elsesser Adam CEO, Director ONE PENUMBRA PLACE, ALAMEDA /s/ Johanna Roberts, as attorney-in-fact for Adam Elsesser 2025-09-04 0001651323

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction PEN Common Stock Options Exercise $839K +28K +16.43% $30.00 198K Sep 3, 2025 Direct
transaction PEN Common Stock Sale -$631K -2.35K -1.19% $268.41 196K Sep 3, 2025 Direct F1, F2
transaction PEN Common Stock Sale -$1.26M -4.67K -2.39% $269.26 191K Sep 3, 2025 Direct F1, F3
transaction PEN Common Stock Sale -$2.05M -7.58K -3.96% $270.09 184K Sep 3, 2025 Direct F1, F4
transaction PEN Common Stock Sale -$325K -1.2K -0.65% $270.81 182K Sep 3, 2025 Direct F1, F5
holding PEN Common Stock 578K Sep 3, 2025 By Trust F6

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction PEN Stock Option (right to buy) Options Exercise $0 -28K -100% $0.00 0 Sep 3, 2025 Common Stock 28K $30.00 Direct F7
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

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).

Explanation of Responses:

Id Content
F1 The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan. The Reporting Person entered into the Rule 10b5-1 trading plan in connection with the expiration of certain stock options held by the Reporting Person and related sales of shares to satisfy the exercise price and tax withholding obligations upon the exercise of such stock options.
F2 This transaction was executed in multiple trades at prices ranging from $267.67 to $268.65. 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.
F3 This transaction was executed in multiple trades at prices ranging from $268.67 to $269.62. 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.
F4 This transaction was executed in multiple trades at prices ranging from $269.74 to $270.65. 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.
F5 This transaction was executed in multiple trades at prices ranging from $270.78 to $271.08. 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.
F6 Shares are held by the Siegel/Elsesser Revocable Trust.
F7 All shares are vested and exercisable.