Amendment No.2 on Schedule 13G

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

 

 

SCHEDULE 13G

Under the Securities Exchange Act of 1934

(AMENDMENT NO 2)*

 

 

 

    ARCA BIOPHARMA, INC.    

(Name of Issuer)

 

 

 

    Common Stock    

(Title of Class of Securities)

 

    00211Y100    

(CUSIP Number)

 

    December 31, 2011    

(Date of Event which Requires Filing of this Statement)

 

 

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

¨ Rule 13d-1(b)

¨ Rule 13d-1(c)

x Rule 13d-1(d)

 

*   The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

 

 

 


Cusip No. 00211Y100   13G    Page  2  of 19 Pages

 

   1   

NAME OF REPORTING PERSONS

 

InterWest Partners IX, LP

 

I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)

   2  

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

(a)  ¨        (b)  ¨

 

   3  

SEC USE ONLY

 

   4  

CITIZENSHIP OR PLACE OF ORGANIZATION

 

    California

NUMBER OF

SHARES

BENEFICIALLY

OWNED BY

REPORTING

PERSON

WITH

    5     

SOLE VOTING POWER

 

    30,015

    6    

SHARED VOTING POWER

 

    0

    7    

SOLE DISPOSITIVE POWER

 

    30,015

    8    

SHARED DISPOSITIVE POWER

 

    0

   9 

 

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

    30,015

 10 

 

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

 

    ¨

 11 

 

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

    0.2%

 12 

 

TYPE OF REPORTING PERSON

 

    PN

 

Page 2 of 19 Pages


Cusip No. 00211Y100   13G    Page  3  of 19 Pages

 

   1   

NAME OF REPORTING PERSONS

 

InterWest Management Partners IX, LLC (the General Partner of InterWest Partners IX, LP)

 

I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)

   2  

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

(a)  ¨        (b)  ¨

 

   3  

SEC USE ONLY

 

   4  

CITIZENSHIP OR PLACE OF ORGANIZATION

 

    California

NUMBER OF

SHARES

BENEFICIALLY

OWNED BY

REPORTING

PERSON

WITH

    5     

SOLE VOTING POWER

 

    30,015

    6    

SHARED VOTING POWER

 

    0

    7    

SOLE DISPOSITIVE POWER

 

    30,015

    8    

SHARED DISPOSITIVE POWER

 

    0

   9 

 

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

    30,015

 10 

 

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

 

    ¨

 11 

 

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

    0.2%

 12 

 

TYPE OF REPORTING PERSON

 

    OO

 

Page 3 of 19 Pages


Cusip No. 00211Y100   13G    Page  4  of 19 Pages

 

   1   

NAME OF REPORTING PERSONS

 

Harvey B. Cash (a Managing Director of InterWest Management Partners IX, LLC)

 

I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)

   2  

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

(a)  ¨        (b)  ¨

 

   3  

SEC USE ONLY

 

   4  

CITIZENSHIP OR PLACE OF ORGANIZATION

 

    United States

NUMBER OF

SHARES

BENEFICIALLY

OWNED BY

REPORTING

PERSON

WITH

    5     

SOLE VOTING POWER

 

    0

    6    

SHARED VOTING POWER

 

    30,015

    7    

SOLE DISPOSITIVE POWER

 

    0

    8    

SHARED DISPOSITIVE POWER

 

    30,015

   9 

 

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

    30,015

 10 

 

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

 

    ¨

 11 

 

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

    0.2%

 12 

 

TYPE OF REPORTING PERSON

 

    IN

Neither the filing of this statement on Schedule 13G nor any of its contents shall be deemed to constitute an admission by Harvey B. Cash that he is the beneficial owner of any of the Common Stock referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose, and such beneficial ownership is expressly disclaimed, except to the extent of his pecuniary interest.

 

Page 4 of 19 Pages


Cusip No. 00211Y100   13G    Page  5  of 19 Pages

 

   1   

NAME OF REPORTING PERSONS

 

Bruce A. Cleveland (a Venture Member of InterWest Management Partners IX, LLC)

 

I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)

   2  

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

(a)  ¨        (b)  ¨

 

   3  

SEC USE ONLY

 

   4  

CITIZENSHIP OR PLACE OF ORGANIZATION

 

    United States

NUMBER OF

SHARES

BENEFICIALLY

OWNED BY

REPORTING

PERSON

WITH

    5     

SOLE VOTING POWER

 

    0

    6    

SHARED VOTING POWER

 

    30,015

    7    

SOLE DISPOSITIVE POWER

 

    0

    8    

SHARED DISPOSITIVE POWER

 

    30,015

   9 

 

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

    30,015

 10 

 

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

 

    ¨

 11 

 

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

    0.2%

 12 

 

TYPE OF REPORTING PERSON

 

    IN

Neither the filing of this statement on Schedule 13G nor any of its contents shall be deemed to constitute an admission by Bruce A. Cleveland that he is the beneficial owner of any of the Common Stock referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose, and such beneficial ownership is expressly disclaimed, except to the extent of his pecuniary interest.

 

Page 5 of 19 Pages


Cusip No. 00211Y100   13G    Page  6  of 19 Pages

 

   1   

NAME OF REPORTING PERSONS

 

Christopher B. Ehrlich (a Venture Member of InterWest Management Partners IX, LLC)

 

I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)

   2  

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

(a)  ¨        (b)  ¨

 

   3  

SEC USE ONLY

 

   4  

CITIZENSHIP OR PLACE OF ORGANIZATION

 

    United States

NUMBER OF

SHARES

BENEFICIALLY

OWNED BY

REPORTING

PERSON

WITH

    5     

SOLE VOTING POWER

 

    0

    6    

SHARED VOTING POWER

 

    30,015

    7    

SOLE DISPOSITIVE POWER

 

    0

    8    

SHARED DISPOSITIVE POWER

 

    30,015

   9 

 

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

    30,015

 10 

 

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

 

    ¨

 11 

 

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

    0.2%

 12 

 

TYPE OF REPORTING PERSON

 

    IN

Neither the filing of this statement on Schedule 13G nor any of its contents shall be deemed to constitute an admission by Christopher B. Ehrlich that he is the beneficial owner of any of the Common Stock referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose, and such beneficial ownership is expressly disclaimed, except to the extent of his pecuniary interest.

 

Page 6 of 19 Pages


Cusip No. 00211Y100   13G    Page  7  of 19 Pages

 

   1   

NAME OF REPORTING PERSONS

 

Philip T. Gianos (a Managing Director of InterWest Management Partners IX, LLC)

 

I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)

   2  

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

(a)  ¨        (b)  ¨

 

   3  

SEC USE ONLY

 

   4  

CITIZENSHIP OR PLACE OF ORGANIZATION

 

    United States

NUMBER OF

SHARES

BENEFICIALLY

OWNED BY

REPORTING

PERSON

WITH

    5     

SOLE VOTING POWER

 

    0

    6    

SHARED VOTING POWER

 

    30,015

    7    

SOLE DISPOSITIVE POWER

 

    0

    8    

SHARED DISPOSITIVE POWER

 

    30,015

   9 

 

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

    30,015

 10 

 

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

 

    ¨

 11 

 

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

    0.2%

 12 

 

TYPE OF REPORTING PERSON

 

    IN

Neither the filing of this statement on Schedule 13G nor any of its contents shall be deemed to constitute an admission by Philip T. Gianos that he is the beneficial owner of any of the Common Stock referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose, and such beneficial ownership is expressly disclaimed, except to the extent of his pecuniary interest.

 

Page 7 of 19 Pages


Cusip No. 00211Y100   13G    Page  8  of 19 Pages

 

   1   

NAME OF REPORTING PERSONS

 

W. Stephen Holmes III (a Managing Director of InterWest Management Partners IX, LLC)

 

I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)

   2  

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

(a)  ¨        (b)  ¨

 

   3  

SEC USE ONLY

 

   4  

CITIZENSHIP OR PLACE OF ORGANIZATION

 

    United States

NUMBER OF

SHARES

BENEFICIALLY

OWNED BY

REPORTING

PERSON

WITH

    5     

SOLE VOTING POWER

 

    0

    6    

SHARED VOTING POWER

 

    30,015

    7    

SOLE DISPOSITIVE POWER

 

    0

    8    

SHARED DISPOSITIVE POWER

 

    30,015

   9 

 

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

    30,015

 10 

 

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

 

    ¨

 11 

 

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

    0.2%

 12 

 

TYPE OF REPORTING PERSON

 

    IN

Neither the filing of this statement on Schedule 13G nor any of its contents shall be deemed to constitute an admission by W. Stephen Holmes III that he is the beneficial owner of any of the Common Stock referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose, and such beneficial ownership is expressly disclaimed, except to the extent of his pecuniary interest.

 

Page 8 of 19 Pages


Cusip No. 00211Y100   13G    Page  9  of 19 Pages

 

   1   

NAME OF REPORTING PERSONS

 

Nina S. Kjellson (a Venture Member of InterWest Management Partners IX, LLC)

 

I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)

   2  

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

(a)  ¨        (b)  ¨

 

   3  

SEC USE ONLY

 

   4  

CITIZENSHIP OR PLACE OF ORGANIZATION

 

    United States

NUMBER OF

SHARES

BENEFICIALLY

OWNED BY

REPORTING

PERSON

WITH

    5     

SOLE VOTING POWER

 

    0

    6    

SHARED VOTING POWER

 

    30,015

    7    

SOLE DISPOSITIVE POWER

 

    0

    8    

SHARED DISPOSITIVE POWER

 

    30,015

   9 

 

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

    30,015

 10 

 

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

 

    ¨

 11 

 

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

    0.2%

 12 

 

TYPE OF REPORTING PERSON

 

    IN

Neither the filing of this statement on Schedule 13G nor any of its contents shall be deemed to constitute an admission by Nina S. Kjellson that she is the beneficial owner of any of the Common Stock referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose, and such beneficial ownership is expressly disclaimed, except to the extent of his pecuniary interest.

 

Page 9 of 19 Pages


Cusip No. 00211Y100   13G    Page  10  of 19 Pages

 

   1   

NAME OF REPORTING PERSONS

 

Gilbert H. Kliman (a Managing Director of InterWest Management Partners IX, LLC)

 

I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)

   2  

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

(a)  ¨        (b)  ¨

 

   3  

SEC USE ONLY

 

   4  

CITIZENSHIP OR PLACE OF ORGANIZATION

 

    United States

NUMBER OF

SHARES

BENEFICIALLY

OWNED BY

REPORTING

PERSON

WITH

    5     

SOLE VOTING POWER

 

    0

    6    

SHARED VOTING POWER

 

    30,015

    7    

SOLE DISPOSITIVE POWER

 

    0

    8    

SHARED DISPOSITIVE POWER

 

    30,015

   9 

 

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

    30,015

 10 

 

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

 

    ¨

 11 

 

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

    0.2%

 12 

 

TYPE OF REPORTING PERSON

 

    IN

Neither the filing of this statement on Schedule 13G nor any of its contents shall be deemed to constitute an admission by Gilbert H. Kliman that he is the beneficial owner of any of the Common Stock referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose, and such beneficial ownership is expressly disclaimed, except to the extent of his pecuniary interest.

 

Page 10 of 19 Pages


Cusip No. 00211Y100   13G    Page  11  of 19 Pages

 

   1   

NAME OF REPORTING PERSONS

 

Khaled A. Nasr (a Venture Member of InterWest Management Partners IX, LLC)

 

I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)

   2  

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

(a)  ¨        (b)  ¨

 

   3  

SEC USE ONLY

 

   4  

CITIZENSHIP OR PLACE OF ORGANIZATION

 

    United States

NUMBER OF

SHARES

BENEFICIALLY

OWNED BY

REPORTING

PERSON

WITH

    5     

SOLE VOTING POWER

 

    0

    6    

SHARED VOTING POWER

 

    30,015

    7    

SOLE DISPOSITIVE POWER

 

    0

    8    

SHARED DISPOSITIVE POWER

 

    30,015

   9 

 

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

    30,015

 10 

 

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

 

    ¨

 11 

 

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

    0.2%

 12 

 

TYPE OF REPORTING PERSON

 

    IN

Neither the filing of this statement on Schedule 13G nor any of its contents shall be deemed to constitute an admission by Khaled A. Nasr that he is the beneficial owner of any of the Common Stock referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose, and such beneficial ownership is expressly disclaimed, except to the extent of his pecuniary interest.

 

Page 11 of 19 Pages


Cusip No. 00211Y100   13G    Page  12  of 19 Pages

 

   1   

NAME OF REPORTING PERSONS

 

Arnold L. Oronsky (a Managing Director of InterWest Management Partners IX, LLC)

 

I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)

   2  

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

(a)  ¨        (b)  ¨

 

   3  

SEC USE ONLY

 

   4  

CITIZENSHIP OR PLACE OF ORGANIZATION

 

    United States

NUMBER OF

SHARES

BENEFICIALLY

OWNED BY

REPORTING

PERSON

WITH

    5     

SOLE VOTING POWER

 

    0

    6    

SHARED VOTING POWER

 

    30,015

    7    

SOLE DISPOSITIVE POWER

 

    0

    8    

SHARED DISPOSITIVE POWER

 

    30,015

   9 

 

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

    30,015

 10 

 

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

 

    ¨

 11 

 

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

    0.2%

 12 

 

TYPE OF REPORTING PERSON

 

    IN

Neither the filing of this statement on Schedule 13G nor any of its contents shall be deemed to constitute an admission by Arnold L. Oronsky that he is the beneficial owner of any of the Common Stock referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose, and such beneficial ownership is expressly disclaimed, except to the extent of his pecuniary interest.

 

Page 12 of 19 Pages


Cusip No. 00211Y100   13G    Page  13  of 19 Pages

 

   1   

NAME OF REPORTING PERSONS

 

Douglas A. Pepper (a Venture Member of InterWest Management Partners IX, LLC)

 

I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)

   2  

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

(a)  ¨        (b)  ¨

 

   3  

SEC USE ONLY

 

   4  

CITIZENSHIP OR PLACE OF ORGANIZATION

 

    United States

NUMBER OF

SHARES

BENEFICIALLY

OWNED BY

REPORTING

PERSON

WITH

    5     

SOLE VOTING POWER

 

    0

    6    

SHARED VOTING POWER

 

    30,015

    7    

SOLE DISPOSITIVE POWER

 

    0

    8    

SHARED DISPOSITIVE POWER

 

    30,015

   9 

 

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

    30,015

 10 

 

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

 

    ¨

 11 

 

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

    0.2%

 12 

 

TYPE OF REPORTING PERSON

 

    IN

Neither the filing of this statement on Schedule 13G nor any of its contents shall be deemed to constitute an admission by Douglas A. Pepper that he is the beneficial owner of any of the Common Stock referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose, and such beneficial ownership is expressly disclaimed, except to the extent of his pecuniary interest.

 

Page 13 of 19 Pages


Cusip No. 00211Y100   13G    Page  14  of 19 Pages

 

   1   

NAME OF REPORTING PERSONS

 

Thomas L. Rosch (a Managing Director of InterWest Management Partners IX, LLC)

 

I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)

   2  

CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP

(a)  ¨        (b)  ¨

 

   3  

SEC USE ONLY

 

   4  

CITIZENSHIP OR PLACE OF ORGANIZATION

 

    United States

NUMBER OF

SHARES

BENEFICIALLY

OWNED BY

REPORTING

PERSON

WITH

    5     

SOLE VOTING POWER

 

    0

    6    

SHARED VOTING POWER

 

    30,015

    7    

SOLE DISPOSITIVE POWER

 

    0

    8    

SHARED DISPOSITIVE POWER

 

    30,015

   9 

 

AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

 

    30,015

 10 

 

CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

 

    ¨

 11 

 

PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

 

    0.2%

 12 

 

TYPE OF REPORTING PERSON

 

    IN

Neither the filing of this statement on Schedule 13G nor any of its contents shall be deemed to constitute an admission by Thomas L. Rosch that he is the beneficial owner of any of the Common Stock referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose, and such beneficial ownership is expressly disclaimed, except to the extent of his pecuniary interest.

 

Page 14 of 19 Pages


ITEM 1.

 

(a) NAME OF ISSUER: ARCA biopharma, Inc.

 

(b) ADDRESS OF ISSUER’S PRINCIPAL EXECUTIVE OFFICE:

8001 Arista Place, Suite 200, Broomfield, CO 80021

ITEM 2.

 

(a) NAME OF PERSON(S) FILING:

InterWest Partners IX, LP (“IWP IX”)

InterWest Management Partners IX, LLC (“IMP IX”)

Harvey B. Cash (“Cash”)

Bruce A. Cleveland (“Cleveland”)

Christopher B. Ehrlich (“Ehrlich”)

Philip T. Gianos (“Gianos”)

W. Stephen Holmes III (“Holmes”)

Nina S. Kjellson (“Kjellson”)

Gilbert H. Kliman (“Kliman”)

Khaled A. Nasr (“Nasr”)

Arnold L. Oronsky (“Oronsky”)

Douglas A. Pepper (“Pepper”)

Thomas L. Rosch (“Rosch”)

 

(b) ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE:

2710 Sand Hill Road, Suite 200, Menlo Park, CA 94025

 

(c) CITIZENSHIP/PLACE OF ORGANIZATION:

 

IWP IX:    California
IMP IX:    California
Cash:    United States
Cleveland:    United States
Ehrlich:    United States
Gianos:    United States
Holmes:    United States
Kjellson:    United States
Kliman:    United States
Nasr:    United States
Oronsky:    United States
Pepper:    United States
Rosch:    United States

 

Page 15 of 19 Pages


(d) TITLE OF CLASS OF SECURITIES: Common Stock

 

(e) CUSIP NUMBER: 00211Y100

ITEM 3. NOT APPLICABLE.

ITEM 4. OWNERSHIP.

 

     IWP IX     IMP IX (1)     Cash (2)     Cleveland (2)     Ehrlich (2)  

Beneficial Ownership

     30,015        30,015        30,015        30,015        30,015   

Percentage of Class

     0.2     0.2     0.2     0.2     0.2

Sole Voting Power

     30,015        30,015        0        0        0   

Shared Voting Power

     0        0        30,015        30,015        30,015   

Sole Dispositive Power

     30,015        30,015        0        0        0   

Shared Dispositive Power

     0        0        30,015        30,015        30,015   

 

     Gianos (2)     Holmes (2)     Kjellson (2)     Kliman (2)     Nasr (2)  

Beneficial Ownership

     30,015        30,015        30,015        30,015        30,015   

Percentage of Class

     0.2     0.2     0.2     0.2     0.2

Sole Voting Power

     0        0        0        0        0   

Shared Voting Power

     30,015        30,015        30,015        30,015        30,015   

Sole Dispositive Power

     0        0        0        0        0   

Shared Dispositive Power

     30,015        30,015        30,015        30,015        30,015   

 

     Oronsky (2)     Pepper (2)     Rosch (2)  

Beneficial Ownership

     30,015        30,015        30,015   

Percentage of Class

     0.2     0.2     0.2

Sole Voting Power

     0        0        0   

Shared Voting Power

     30,015        30,015        30,015   

Sole Dispositive Power

     0        0        0   

Shared Dispositive Power

     30,015        30,015        30,015   

 

(1) IMP IX is the general partner of IWP IX.
(2) Cash, Gianos, Holmes, Kliman, Oronsky and Rosch are Managing Directors of IMP IX. Cleveland, Ehrlich, Kjellson, Nasr, and Pepper are Venture Members of IMP IX.

 

Page 16 of 19 Pages


ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS.

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following x

ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON.

Under certain circumstances set forth in the limited liability company operating agreement of IMP IX, the members of such limited liability company have the right to receive dividends from, or the proceeds from the sale of, the common stock of Issuer beneficially owned by such limited liability company.

ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY.

Not applicable.

ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP.

No reporting person is a member of a group as defined in section 240.13d-1(b)(1)(iii)(H) of the Act.

ITEM 9. NOTICE OF DISSOLUTION OF THE GROUP.

Not applicable.

ITEM 10. CERTIFICATION.

Not applicable.

EXHIBITS

Joint Filing Statement attached as Exhibit A.

 

Page 17 of 19 Pages


SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Date: February 14, 2012

 

      INTERWEST PARTNERS IX, LP
      By:   InterWest Management Partners IX, LLC
      its General Partner
      By:  

/s/ W. Stephen Holmes

By:  

/s/ Harvey B. Cash

      Managing Director
Name:   Harvey B. Cash      
      INTERWEST MANAGEMENT PARTNERS IX, LLC
By:  

/s/ Bruce A. Cleveland

     
Name:   Bruce A. Cleveland    

 

By:

 

 

/s/ W. Stephen Holmes

        Managing Director
By:  

/s/ Christopher B. Ehrlich

     
Name:   Christopher B. Ehrlich      
By:  

/s/ Philip T. Gianos

    By:  

/s/ Douglas A. Pepper

Name:   Philip T. Gianos     Name:   Douglas A. Pepper
By:  

/s/ W. Stephen Holmes

    By:  

/s/ Thomas L. Rosch

Name:   W. Stephen Holmes     Name:   Thomas L. Rosch
By:  

/s/ Nina S. Kjellson

     
Name:   Nina S. Kjellson      
By:  

/s/ Gilbert H. Kliman

     
Name:   Gilbert H. Kliman      
By:  

/s/ Khaled A. Nasr

     
Name:   Khaled A. Nasr      
By:  

/s/ Arnold L. Oronsky

     
Name:   Arnold L. Oronsky      

 

Page 18 of 19 Pages


EXHIBIT A

Joint Filing Statement

We, the undersigned, hereby express our agreement that the attached Schedule 13G is filed on behalf of each of us.

Date: February 14, 2012

 

      INTERWEST PARTNERS IX, LP
      By:   InterWest Management Partners IX, LLC
      its General Partner
      By:  

/s/ W. Stephen Holmes

By:  

/s/ Harvey B. Cash

      Managing Director
Name:   Harvey B. Cash      
      INTERWEST MANAGEMENT PARTNERS IX, LLC
By:  

/s/ Bruce A. Cleveland

     
Name:   Bruce A. Cleveland    

 

By:

 

 

/s/ W. Stephen Holmes

        Managing Director
By:  

/s/ Christopher B. Ehrlich

     
Name:   Christopher B. Ehrlich      
By:  

/s/ Philip T. Gianos

    By:  

/s/ Douglas A. Pepper

Name:   Philip T. Gianos     Name:   Douglas A. Pepper
By:  

/s/ W. Stephen Holmes

    By:  

/s/ Thomas L. Rosch

Name:   W. Stephen Holmes     Name:   Thomas L. Rosch
By:  

/s/ Nina S. Kjellson

     
Name:   Nina S. Kjellson      
By:  

/s/ Gilbert H. Kliman

     
Name:   Gilbert H. Kliman      
By:  

/s/ Khaled A. Nasr

     
Name:   Khaled A. Nasr      
By:  

/s/ Arnold L. Oronsky

     
Name:   Arnold L. Oronsky      

 

Page 19 of 19 Pages