Exhibit B JOINT FILING AGREEMENT The undersigned hereby agree that the statement on Schedule 13D with respect to the common stock, par value $0.0001 per share, of Sunesis Pharmaceuticals, Inc., a Delaware corporation, is, and any amendment thereto...Joint Filing Agreement • October 6th, 2005 • Warburg Pincus Equity Partners Lp • Pharmaceutical preparations
The undersigned hereby agree that the statement on Schedule 13D with respect to the common stock, par value $0.0001 per share, of Sunesis Pharmaceuticals, Inc., a Delaware corporation, is, and any amendment thereto signed by each of the undersigned shall be, filed on behalf of each undersigned pursuant to and in accordance with the provisions of 13d-1(k) under the Securities Exchange Act of 1934, as amended.
Exhibit A LOCK-UP LETTER AGREEMENT LEHMAN BROTHERS INC. SG COWEN & CO., LLC PIPER JAFFRAY & CO. NEEDHAM & COMPANY, INC. As Representative(s) of the several Underwriters named in Schedule 1, c/o Lehman Brothers Inc. 745 Seventh Avenue New York, New...Letter Agreement • October 6th, 2005 • Warburg Pincus Equity Partners Lp • Pharmaceutical preparations • New York
LEHMAN BROTHERS INC. SG COWEN & CO., LLC PIPER JAFFRAY & CO. NEEDHAM & COMPANY, INC. As Representative(s) of the several Underwriters named in Schedule 1, c/o Lehman Brothers Inc. 745 Seventh Avenue New York, New York 10019
