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EX-99.1 14 rrd252707_285744.htm JOINT FILER INFORMATION rrd252707_285744.html

Exhibit 99.1

FORM 3 JOINT FILER INFORMATION

Name of
"Reporting Persons": InterWest Partners IX, L.P. ("IW9")
InterWest Management Partners IX, LLC ("IMP9")

Harvey B. Cash
Philip T. Gianos
W. Stephen Holmes
Gilbert H. Kliman
Arnold L. Oronsky
Thomas L. Rosch
Michael B. Sweeney
Bruce A. Cleveland
Christopher B. Ehrlich
Linda S. Grais
Khaled A. Nasr
Douglas A. Pepper

Address: 2710 Sand Hill Road, Second Floor
Menlo Park, CA 94025

Designated Filer: InterWest Partners IX, L.P.

Issuer and Ticker Symbol: Trius Therapeutics, Inc. (TSRX)

Date of Event: August 2, 2010

Each of the following is a Joint Filer with InterWest Partners IX L.P. ("IW9") and may be deemed to share indirect beneficial
ownership in the securities set forth on the attached Form 3:

InterWest Management Partners IX, LLC ("IMP9") is the general partner of IW9 and has sole voting and investment control over the
shares owned by IW9. Harvey B. Cash, Philip T. Gianos, W. Stephen Holmes, Gilbert H. Kliman, Arnold L. Oronsky, Thomas L. Rosch,
and Michael B. Sweeney are Managing Directors of IMP9 and Bruce A. Cleveland, Christopher B. Ehrlich, Linda S. Grais, Nina
Kjellson, Khaled A. Nasr, and Douglas A. Pepper are Venture Members of IMP9. Nina Kjellson, a Venture Member of IMP9 is also a
Director of the Issuer, and has filed a separate Form 3 in her own name.

All Reporting Persons disclaim beneficial ownership of shares of Trius Therapeutics, Inc. stock held by IW9, except to the extent
of their respective pecuniary interest therein. The filing of this statement shall not be deemed an admission that, for purposes
of Section 16 of the Securities Exchange Act of 1934, or otherwise, any of the Reporting Persons are the beneficial owner of all
of the equity securities covered by this statement.

Each of the Reporting Persons listed above has designated InterWest Partners IX, L.P. as its designated filer of Forms 3, 4 and 5
in accordance with Section 16(a) of the Securities Exchange Act of 1934 and the rules thereunder. Each Reporting Person has
appointed InterWest Management Partners IX, LLC as its attorney in fact for the purpose of making reports relating to transaction
in Trius Therapeutics, Inc. Common Stock.

INTERWEST MANAGEMENT PARTNERS IX, L.L.C. Thomas L. Rosch, an individual
By: InterWest Management Partners IX, LLC,
as Attorney-in-Fact
By: /s/ W. Stephen Holmes
-----------------------
Stephen Holmes, Managing Director By: /s/ Karen A. Wilson
---------------------------------------
Karen A. Wilson, Power of Attorney

INTERWEST PARTNERS IX, LP Michael B. Sweeney, an individual
By: InterWest Management Partners IX, LLC,
By: InterWest Management Partners IX, LLC as Attorney-in-Fact
Its General Partner
By: /s/ Karen A. Wilson
---------------------------------------
Karen A. Wilson, Power of Attorney
By: /s/ W. Stephen Holmes
------------------------------------------------
W. Stephen Holmes, Managing Director

Harvey B. Cash, an individual Bruce A. Cleveland, an individual
By: InterWest Management Partners IX, LLC, By: InterWest Management Partners IX, LLC,
as Attorney-in-Fact as Attorney-in-Fact

By: /s/ Karen A. Wilson By: /s/ Karen A. Wilson
------------------------------------------------ ---------------------------------------
Karen A. Wilson, Power of Attorney Karen A. Wilson, Power of Attorney

Philip T. Gianos, an individual Christopher B. Ehrlich, an individual
By: InterWest Management Partners IX, LLC, By: InterWest Management Partners IX, LLC,
as Attorney-in-Fact as Attorney-in-Fact

W. Stephen Holmes, an individual Linda S. Grais, an individual
By: InterWest Management Partners IX, LLC, By: InterWest Management Partners IX, LLC,
as Attorney-in-Fact as Attorney-in-Fact

Gilbert H. Kliman, an individual Khaled A. Nasr, an individual
By: InterWest Management Partners IX, LLC, By: InterWest Management Partners IX, LLC,
as Attorney-in-Fact as Attorney-in-Fact

Arnold L. Oronsky, an individual Douglas A. Pepper, an individual
By: InterWest Management Partners IX, LLC, By: InterWest Management Partners IX, LLC,
as Attorney-in-Fact as Attorney-in-Fact