Penumbra Inc — Director's Dealing 2017

Feb 9, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Penumbra Inc (PEN)
CIK: 0001321732
Period of Report: 2017-02-07

Reporting Person: Bose Arani (Director, Chief Innovator)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-02-07	Common Stock	M	4000	$1.26	Acquired	736191	Direct
2017-02-07	Common Stock	S	3396	$68.99	Disposed	732795	Direct
2017-02-07	Common Stock	S	604	$69.57	Disposed	732191	Direct
2017-02-08	Common Stock	M	9300	—	Acquired	741491	Direct
2017-02-08	Common Stock	S	1701	$68.60	Disposed	739790	Direct
2017-02-08	Common Stock	S	4199	$69.82	Disposed	735591	Direct
2017-02-08	Common Stock	S	3400	$70.17	Disposed	732191	Direct
2017-02-09	Common Stock	M	9000	$1.26	Acquired	741191	Direct
2017-02-09	Common Stock	S	100	$68.95	Disposed	741091	Direct
2017-02-09	Common Stock	S	1200	$70.35	Disposed	739891	Direct
2017-02-09	Common Stock	S	1380	$71.61	Disposed	738511	Direct
2017-02-09	Common Stock	S	6320	$72.14	Disposed	732191	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-02-07	Stock Option (right to buy)	$1.26	M	4000	Disposed	2017-09-30	Common Stock (4000.0)	Direct
2017-02-08	Stock Option (right to buy)	$1.26	M	9300	Disposed	2017-09-30	Common Stock (9300.0)	Direct
2017-02-09	Stock Option (right to buy)	$1.26	M	9000	Disposed	2017-09-30	Common Stock (9000.0)	Direct

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	250000	Indirect
Common Stock	250000	Indirect

Footnotes

F1: The sales were effected pursuant to the Reporting Person's Rule 10b5-1 trading plan.

F2: This transaction was executed in multiple trades at prices ranging from $68.35 to $69.25. 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.

F3: This transaction was executed in multiple trades at prices ranging from $69.40 to $69.80. 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.

F4: This transaction was executed in multiple trades at prices ranging from $68.10 to $69.05. 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.

F5: This transaction was executed in multiple trades at prices ranging from $69.10 to $70.08. 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.

F6: This transaction was executed in multiple trades at prices ranging from $70.10 to $70.23. 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.

F7: This transaction was executed in multiple trades at prices ranging from $70.00 to $70.80. 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.

F8: This transaction was executed in multiple trades at prices ranging from $71.05 to $71.90. 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.

F9: This transaction was executed in multiple trades at prices ranging from $71.95 to $72.28. 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.

F10: Shares are held by the Arani Bose 2009 Family Trust.

F11: Shares are held by the Shumita Bose 2009 Family Trust.

F12: All shares are vested and exercisable.