InterWest Partners IX SC 13D Beneficial ownership report

Exhibit A

JOINT FILING STATEMENT

I, the undersigned, hereby express my agreement that the attached Schedule 13D (and any amendments thereto) relating to the Common Stock of Ocera Therapeutics, Inc. is filed on behalf of each of the undersigned.

Date: July 29, 2013

INTERWEST PARTNERS IX, L.P.
By:	InterWest Management Partners IX, LLC
Its:	General Partner
By:	/s/ W. Stephen Holmes III
	W. STEPHEN HOLMES III
	Managing Director
INTERWEST MANAGEMENT PARTNERS IX, LLC
By:	/s/ W. Stephen Holmes III
	W. STEPHEN HOLMES III
	Managing Director
/s/ Karen A. Wilson
Karen A. Wilson, Attorney-in-Fact for Philip T. Gianos
/s/ W. Stephen Holmes III
W. Stephen Holmes III
/s/ Karen A. Wilson
Karen A. Wilson, Attorney-in-Fact for Gilbert H. Kliman
/s/ Karen A. Wilson
Karen A. Wilson, Attorney-in-Fact for Arnold L. Oronsky
/s/ Karen A. Wilson
Karen A. Wilson, Attorney-in-Fact for Nina Kjellson
/s/ Karen A. Wilson
Karen A. Wilson, Attorney-in-Fact for Douglas A. Pepper
/s/ Karen A. Wilson
Karen A. Wilson, Attorney-in-Fact for Bruce A. Cleveland
/s/ Karen A. Wilson
Karen A. Wilson, Attorney-in-Fact for Khaled A. Nasr

19.