Ownership Submission
FORM 3
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Wang Walter Charles
2. Date of Event Requiring Statement (Month/Day/Year)
09/17/2015
3. Issuer Name and Ticker or Trading Symbol
Penumbra Inc [PEN]
(Last)
(First)
(Middle)
ONE PENUMBRA PLACE, 1351 HARBOR BAY PARKWAY
4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

ALAMEDA, CA 94502
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 Beneficially Owned
1.Title of Security
(Instr. 4)
2. Amount of Securities Beneficially Owned
(Instr. 4)
3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)
4. Nature of Indirect Beneficial Ownership
(Instr. 5)
Common Stock 6,125
D
 
Common Stock 15,312
I
See Footnote (1)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)
2. Date Exercisable and Expiration Date
(Month/Day/Year)
3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)
4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)
6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Series B Preferred Stock   (2)   (2) Common Stock 122,500 (3) $ (3) D  
Series C Preferred Stock   (2)   (2) Common Stock 125,392 (3) $ (3) D  
Series D Preferred Stock   (2)   (2) Common Stock 157,791 (3) $ (3) D  
Series E Preferred Stock   (2)   (2) Common Stock 105,263 (3) $ (3) D  
Series B Preferred Stock   (2)   (2) Common Stock 306,250 (3) $ (3) I See Footnote (1)
Series C Preferred Stock   (2)   (2) Common Stock 313,480 (3) $ (3) I See Footnote (1)
Series D Preferred Stock   (2)   (2) Common Stock 197,239 (3) $ (3) I See Footnote (1)
Series E Preferred Stock   (2)   (2) Common Stock 131,579 (3) $ (3) I See Footnote (1)

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Wang Walter Charles
ONE PENUMBRA PLACE
1351 HARBOR BAY PARKWAY
ALAMEDA, CA 94502
  X      

Signatures

/s/ Sukhindra Mata, as attorney-in-fact for Walter Charles Wang 09/17/2015
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(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) Shares are held by Wang Ventures LLC, of which Mr. Wang is a Member. To the extent Mr. Wang is deemed to have beneficial ownership of any shares held by Wang Ventures LLC, he disclaims beneficial ownership except to the extent of his pecuniary interest therein.
(2) The securities are preferred stock of the Issuer. These securities are immediately convertible upon the closing of the Issuer's initial public offering and do not have an expiration date.
(3) Each share of preferred stock will automatically convert on a 1-for-1 basis into common stock upon the closing of the Issuer's initial public offering.

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