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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1321732	Penumbra Inc	PEN	Surgical & Medical Instruments & Apparatus (3841)	000000000

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1651324	W. Don Kassing	One Penumbra Place Alameda CA 94502		Yes	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2018-01-29	800	$100.57	2,648	No	4	S	Direct
Common Stock	Disposition	2018-01-29	1,200	$101.18	1,448	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Direct
No	4	S	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	8,500	Indirect	By Trust

Footnotes

The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan.
This transaction was executed in multiple trades at prices ranging from $99.95 to $100.85. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.
This transaction was executed in multiple trades at prices ranging from $100.95 to $101.80. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.
Shares are held by The Kassing Family Trust.