-----BEGIN PRIVACY-ENHANCED MESSAGE----- Proc-Type: 2001,MIC-CLEAR Originator-Name: webmaster@www.sec.gov Originator-Key-Asymmetric: MFgwCgYEVQgBAQICAf8DSgAwRwJAW2sNKK9AVtBzYZmr6aGjlWyK3XmZv3dTINen TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB MIC-Info: RSA-MD5,RSA, Tf13wIWGcUTQt5OSRMLClTyoEa+fokYHHWejUpvKSK/RlsAMHwXt/rx3w3iWhP++ bl7l27UpOTtcKk26f6awdw== 0000899140-05-000909.txt : 20051006 0000899140-05-000909.hdr.sgml : 20051006 20051006171421 ACCESSION NUMBER: 0000899140-05-000909 CONFORMED SUBMISSION TYPE: SC 13D PUBLIC DOCUMENT COUNT: 3 FILED AS OF DATE: 20051006 DATE AS OF CHANGE: 20051006 GROUP MEMBERS: WARBURG PINCUS & CO. GROUP MEMBERS: WARBURG PINCUS LLC GROUP MEMBERS: WARBURG PINCUS PARTNERS LLC SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: SUNESIS PHARMACEUTICALS INC CENTRAL INDEX KEY: 0001061027 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 943295878 FILING VALUES: FORM TYPE: SC 13D SEC ACT: 1934 Act SEC FILE NUMBER: 005-81034 FILM NUMBER: 051127750 BUSINESS ADDRESS: STREET 1: 341 OYSTER POINT BOULEVARD CITY: SOUTH SAN FRANCISCO STATE: CA ZIP: 94080 BUSINESS PHONE: 650-266-3500 MAIL ADDRESS: STREET 1: 341 OYSTER POINT BOULEVARD CITY: SOUTH SAN FRANCISCO STATE: CA ZIP: 94080 FORMER COMPANY: FORMER CONFORMED NAME: MOSAIC PHARMACEUTICALS INC DATE OF NAME CHANGE: 19980709 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: WARBURG PINCUS EQUITY PARTNERS LP CENTRAL INDEX KEY: 0001075598 FILING VALUES: FORM TYPE: SC 13D BUSINESS ADDRESS: STREET 1: 466 LEXINGTON AVE. CITY: NEW YORK STATE: NY ZIP: 10017 BUSINESS PHONE: 2128780600 SC 13D 1 w3002432b.txt INITIAL FILING SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934* Sunesis Pharmaceuticals, Inc. - -------------------------------------------------------------------------------- (Name of Issuer) Common Stock, $0.0001 Par Value - -------------------------------------------------------------------------------- (Title of Class of Securities) 867328 50 2 - -------------------------------------------------------------------------------- (CUSIP Number) Scott A. Arenare, Esq. Managing Director and General Counsel Warburg Pincus LLC 466 Lexington Avenue New York, New York 10017 (212) 878-0600 - -------------------------------------------------------------------------------- (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) - -------------------------------------------------------------------------------- September 30, 2005 - -------------------------------------------------------------------------------- (Date of Event which Requires Filing of this Statement) If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of ss.ss. 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box: [ ] NOTE: Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See Rule 240.13d-7 for other parties to whom copies are to be sent. * 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 disclosures provided in a prior cover page. The information required on 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). SCHEDULE 13D - ------------------------------------------- ---------------------------- CUSIP No. 867328 50 2 Page 2 of 13 pages - -------------------------------------------- ---------------------------- - ------------- ------------------------------------------------------------------ 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (entities only) Warburg, Pincus Equity Partners, L.P. I.R.S. #13-3986317 - ------------- ------------------------------------------------------------------ 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) [ ] (b) [X] - ------------- ------------------------------------------------------------------ 3 SEC USE ONLY - ------------- ------------------------------------------------------------------ 4 SOURCE OF FUNDS (See Instructions) WC - ------------- ------------------------------------------------------------------ 5 CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) [ ] - ------------- ------------------------------------------------------------------ 6 CITIZENSHIP OR PLACE OF ORGANIZATION Delaware - ----------------------- ----------- -------------------------------------------- 7 SOLE VOTING POWER -0- NUMBER OF SHARES ----------- -------------------------------------------- BENEFICIALLY OWNED 8 SHARED VOTING POWER BY EACH REPORTING PERSON WITH 2,821,722 ----------- -------------------------------------------- 9 SOLE DISPOSITIVE POWER -0- ----------- ------------------------------------------- 10 SHARED DISPOSITIVE POWER 2,821,722 - ------------- ------------------------------------------------------------------ 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,821,722 - ------------- ------------------------------------------------------------------ 12 CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions) [ ] - ------------- ------------------------------------------------------------------ 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 13.2% - ------------- ------------------------------------------------------------------ 14 TYPE OF REPORTING PERSON (See Instructions) PN - ------------- ------------------------------------------------------------------ SCHEDULE 13D - ------------------------------------------- ---------------------------- CUSIP No. 867328 50 2 Page 3 of 13 pages - -------------------------------------------- ---------------------------- - ------------- ------------------------------------------------------------------ 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (entities only) Warburg Pincus & Co. I.R.S. #13-6358475 - ------------- ------------------------------------------------------------------ 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) [ ] (b) [X] - ------------- ------------------------------------------------------------------ 3 SEC USE ONLY - ------------- ------------------------------------------------------------------ 4 SOURCE OF FUNDS (See Instructions) N/A - ------------- ------------------------------------------------------------------ 5 CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) [ ] - ------------- ------------------------------------------------------------------ 6 CITIZENSHIP OR PLACE OF ORGANIZATION New York - ----------------------- ----------- -------------------------------------------- 7 SOLE VOTING POWER -0- NUMBER OF SHARES ----------- -------------------------------------------- BENEFICIALLY OWNED 8 SHARED VOTING POWER BY EACH REPORTING PERSON WITH 2,821,722 ----------- -------------------------------------------- 9 SOLE DISPOSITIVE POWER -0- ----------- ------------------------------------------- 10 SHARED DISPOSITIVE POWER 2,821,722 - ------------- ------------------------------------------------------------------ 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,821,722 - ------------- ------------------------------------------------------------------ 12 CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions) [ ] - ------------- ------------------------------------------------------------------ 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 13.2% - ------------- ------------------------------------------------------------------ 14 TYPE OF REPORTING PERSON (See Instructions) PN - ------------- ------------------------------------------------------------------ SCHEDULE 13D - ------------------------------------------- ---------------------------- CUSIP No. 867328 50 2 Page 4 of 13 pages - -------------------------------------------- ---------------------------- - ------------- ------------------------------------------------------------------ 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (entities only) Warburg Pincus LLC I.R.S. #13-3536050 - ------------- ------------------------------------------------------------------ 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) [ ] (b) [X] - ------------- ------------------------------------------------------------------ 3 SEC USE ONLY - ------------- ------------------------------------------------------------------ 4 SOURCE OF FUNDS (See Instructions) N/A - ------------- ------------------------------------------------------------------ 5 CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) [ ] - ------------- ------------------------------------------------------------------ 6 CITIZENSHIP OR PLACE OF ORGANIZATION New York - ----------------------- ----------- -------------------------------------------- 7 SOLE VOTING POWER -0- NUMBER OF SHARES ----------- -------------------------------------------- BENEFICIALLY OWNED 8 SHARED VOTING POWER BY EACH REPORTING PERSON WITH 2,821,722 ----------- -------------------------------------------- 9 SOLE DISPOSITIVE POWER -0- ----------- ------------------------------------------- 10 SHARED DISPOSITIVE POWER 2,821,722 - ------------- ------------------------------------------------------------------ 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,821,722 - ------------- ------------------------------------------------------------------ 12 CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions) [ ] - ------------- ------------------------------------------------------------------ 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 13.2% - ------------- ------------------------------------------------------------------ 14 TYPE OF REPORTING PERSON (See Instructions) OO - ------------- ------------------------------------------------------------------ SCHEDULE 13D - ------------------------------------------- ---------------------------- CUSIP No. 867328 50 2 Page 5 of 13 pages - -------------------------------------------- ---------------------------- - ------------- ------------------------------------------------------------------ 1 NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (entities only) Warburg Pincus Partners LLC I.R.S. #13-4069737 - ------------- ------------------------------------------------------------------ 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (See Instructions) (a) [ ] b) [X] - ------------- ------------------------------------------------------------------ 3 SEC USE ONLY - ------------- ------------------------------------------------------------------ 4 SOURCE OF FUNDS (See Instructions) N/A - ------------- ------------------------------------------------------------------ 5 CHECK IF DISCLOSURE OF LEGAL PROCEEDING IS REQUIRED PURSUANT TO ITEMS 2(d) or 2(e) [ ] - ------------- ------------------------------------------------------------------ 6 CITIZENSHIP OR PLACE OF ORGANIZATION New York - ----------------------- ----------- -------------------------------------------- 7 SOLE VOTING POWER -0- NUMBER OF SHARES ----------- -------------------------------------------- BENEFICIALLY OWNED 8 SHARED VOTING POWER BY EACH REPORTING PERSON WITH 2,821,722 ----------- -------------------------------------------- 9 SOLE DISPOSITIVE POWER -0- ----------- ------------------------------------------- 10 SHARED DISPOSITIVE POWER 2,821,722 - ------------- ------------------------------------------------------------------ 11 AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 2,821,722 - ------------- ------------------------------------------------------------------ 12 CHECK IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES (See Instructions) [ ] - ------------- ------------------------------------------------------------------ 13 PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 13.2% - ------------- ------------------------------------------------------------------ 14 TYPE OF REPORTING PERSON (See Instructions) OO - ------------- ------------------------------------------------------------------ This Schedule 13D is being filed on behalf of Warburg, Pincus Equity Partners, L.P., a Delaware limited partnership (together with two affiliated entities, "WPEP"), Warburg Pincus LLC, a New York limited liability company ("WP LLC"), Warburg Pincus & Co., a New York general partnership ("WP") and Warburg Pincus Partners LLC, a New York limited liability company and a subsidiary of WP ("WPP LLC"). The holdings of Common Stock of WPEP, WP LLC, WP and WPP LLC include certain shares of Common Stock which may be deemed to be beneficially owned by Warburg, Pincus Netherlands Equity Partners I, C.V. and Warburg, Pincus Netherlands Equity Partners III, C.V. WPEP, WP, WP LLC, WPP LLC are collectively referred to as the "Warburg Pincus Reporting Persons"). This Schedule 13D relates to the common stock, par value $0.0001 per share (the "Common Stock"), of Sunesis Pharmaceuticals, Inc., a Delaware corporation (the "Company"). The Warburg Pincus Reporting Persons are filing this Schedule 13D because they have acquired a significant ownership stake in the Company through a series of investments in the Company, and also in connection with the Company's initial public offering of Common Stock (the "IPO"). Item 1. Security and Issuer. This statement on Schedule 13D relates to the Common Stock and is being filed pursuant to Rule 13d-1 under the Securities Exchange Act of 1934, as amended. The address of the principal executive offices of the Company is 341 Oyster Point Boulevard, South San Francisco, California 94080. Item 2. Identity and Background. (a) This Schedule 13D is filed by the Warburg Pincus Reporting Persons. The general partner of WPEP is WPP LLC. WP is the managing member of WPP LLC. Page 6 of 13 Pages WP LLC manages WPEP. The general partners of WP and the members of WP LLC, and their respective business addresses and principal occupations are set forth on Schedule I hereto. (b) The address of the principal business and principal office of each of the Warburg Pincus Reporting Persons and those persons listed on Schedule I is c/o Warburg Pincus & Co., 466 Lexington Avenue, New York, New York 10017. (c) The principal business of WPEP is that of making private equity and related investments. The principal business of WPP LLC is acting as the general partner of WPEP and several other related partnerships. The principal business of WP is acting as the managing member of WPP LLC. The principal business of WP LLC is acting as manager of WPEP and several other related partnerships. (d) None of the Warburg Pincus Reporting Persons, nor, to the best of their knowledge, any of the directors, executive officers, control persons, general partners or members referred to in paragraph (a) above has, during the last five years, been convicted in a criminal proceeding (excluding traffic violations or similar misdemeanors). (e) None of the Warburg Pincus Reporting Persons, nor, to the best of their knowledge, any of the directors, executive officers, control persons, general partners or members referred to in paragraphs (a) and (d) above has, during the last five years, been a party to a civil proceeding of a judicial or administrative body of competent jurisdiction and as a result of such proceeding was or is subject to a judgment, decree or final order enjoining future violations of, or prohibiting or mandating activities subject to, federal or state securities laws or finding any violation with respect to such laws. Page 7 of 13 Pages (f) Except as otherwise indicated on Schedule I hereto, each of the individuals referred to in paragraphs (a) and (d) above is a United States citizen. Item 3. Source and Amount of Funds or Other Consideration. Prior to the IPO, the Warburg Pincus Reporting Persons acquired shares of Series B Convertible Preferred Stock (in 1999) and Series C Convertible Preferred Stock (in 2000) (collectively, the "Preferred Shares"), which, in connection with the IPO and after giving effect to the reverse stock split that occurred in connection with the IPO, converted into 2,376,722 shares of Common Stock. The Warburg Pincus Reporting Persons paid no additional consideration for the 2,376,722 shares of Common Stock. The Warburg Pincus Reporting Persons also purchased 445,000 shares of Common Stock in connection with the IPO at the per share initial public offering price of $7.00 for an aggregate purchase price of $3,115,000. All of the funds required to acquire the shares of Common Stock owned by the Warburg Pincus Reporting Persons were obtained from the working capital of the Warburg Pincus Reporting Persons. Of the shares of Common Stock acquired by the Warburg Pincus Reporting Persons, 2,376,722 shares converted upon the effectiveness of the IPO and 445,000 were purchased within the past sixty days. Item 4. Purpose of Transaction. The acquisition by the Warburg Pincus Reporting Persons of the Common Stock was effected because of the Warburg Pincus Reporting Persons' belief that the Common Stock represented, and continues to represent, an attractive investment. The Warburg Pincus Reporting Persons may from time to time acquire additional shares of Common Stock or engage in discussions with the Company concerning further acquisitions of shares of Common Stock or further investments in the Company. Such further Page 8 of 13 pages acquisitions or investments could be material. The Warburg Pincus Reporting Persons intend to review their investment in the Company on a continuing basis and, depending on the price and availability of shares of Common Stock, subsequent developments affecting the Company, the Company's business and prospects, other investments and business opportunities available to the Warburg Pincus Reporting Persons, general stock market and economic conditions, tax considerations and other factors considered relevant, may decide at any time to increase, or to decrease, the size of their investment in the Company. Pursuant to an Agreement, dated December 15, 2004, by and between the Warburg Pincus Reporting Persons and the representatives of the several underwriters of the IPO (the "Lock-up Agreement"), without the prior written consent of the representatives on behalf of the underwriters, the Warburg Pincus Reporting Persons have agreed, that they will not, directly or indirectly, (a) offer for sale, sell, pledge or otherwise dispose of (or enter into any transaction or device that is designed to, or could be expected to, result in the disposition by any person at any time in the future of) any shares of Common Stock (including, without limitation, shares of Common Stock that may be deemed to be beneficially owned by the Warburg Pincus Reporting Persons and shares of Common Stock that may be issued upon exercise of any option or warrant) or securities convertible into or exchangeable for Common Stock, or (b) enter into any swap or other derivatives transaction that transfers to another, in whole or in part, any of the economic benefits or risks of ownership of shares of Common Stock for a period of 180 days after September 27, 2005, subject to specified exceptions. A copy of the Lock-up Agreement is attached hereto as Exhibit A. Page 9 of 13 Pages Except as set forth in this statement, none of the Warburg Pincus Reporting Persons nor, to the best of their knowledge, any person listed on Schedule I hereto or in Item 1(a) or (d) above, has any plans or proposals that relate to or would result in: (a) the acquisition by any person of additional securities of the Company, or the disposition of securities of the Company; (b) an extraordinary corporate transaction, such as a merger, reorganization or liquidation, involving the Company or any of its subsidiaries; (c) a sale or transfer of a material amount of assets of the Company or any of its subsidiaries; (d) any change in the present Board of Directors or management of the Company, including any plans or proposals to change the number or term of directors or to fill any existing vacancies on the board; (e) any material change in the present capitalization or dividend policy of the Company; (f) any other material change in the Company's business or corporate structure; (g) changes in the Company's charter, by-laws or instruments corresponding thereto or other actions which may impede the acquisition of control of the Company by any person; (h) causing a class of securities of the Company to be delisted from a national securities exchange or to cease to be authorized to be quoted in an inter-dealer quotation system of a registered national securities association; (i) a class of equity securities of the Company becoming eligible for termination of registration pursuant to Section 12(g)(4) of the Exchange Act; or (j) any action similar to any of those enumerated above. Item 5. Interest in Securities of the Issuer. (a) As of September 27, 2005, each of the Warburg Pincus Reporting Persons may be deemed to beneficially own 2,821,722 shares of Common Stock, representing 13.2% of the outstanding Common Stock, based on the 21,455,801 shares of Common Stock outstanding as of September 27, 2005, the date of the Company's initial public Page 10 of 13 Pages offering, as represented by the Company in its Registration Statement on Form S-1 (File No. 333-121646), as amended, and as declared effective on September 27, 2005 (the "Registration Statement"). (b) Each of the Warburg Pincus Reporting Persons share the power to vote or to direct the vote and to dispose or to direct the disposition of the 2,821,722 shares of Common Stock it may be deemed to beneficially own. The Warburg Pincus Reporting Persons are making this single, joint filing because they may be deemed to constitute a "person" or "group" within the meaning of Section 13(d)(3) of the Exchange Act. The filing of this Schedule 13D shall not be construed as an admission of such beneficial ownership or that the Warburg Pincus Reporting Persons constitute a person or group. (c) In connection with the IPO, (i) the Preferred Shares held by the Warburg Pincus Reporting Persons converted into shares of Common Stock, and (ii) the Warburg Pincus Reporting Persons purchased 445,000 shares of Common Stock on September 30, 2005. No other transactions in the Common Stock were effected during the past sixty days by the Warburg Pincus Reporting Persons or any of the persons set forth on Schedule I hereto. (d) Not applicable (e) Not applicable. Item 6. Contracts, Arrangements, Understandings or Relationships with Respect to Securities of the Issuer. Pursuant to Rule 13d-1(k) promulgated under the Exchange Act, the Warburg Pincus Reporting Persons have entered into a Joint Filing Agreement attached hereto as Page 11 of 13 Pages Exhibit B, with respect to the joint filing of the Schedule 13D and any amendment or amendments thereto. The Company, WPEP and certain other investors in the Company entered into the Eighth Amended and Restated Investor Rights Agreement, dated August 30, 2004 (the "Investor Rights Agreement"), which gives WPEP and the other investors certain registration rights with respect to the Common Stock that they own. This description of certain provisions of the Investor Rights Agreement is qualified in its entirety by reference to the copy of the form of Investor Rights Agreement filed as Exhibit 10.17 to the Registration Statement, which is incorporated by reference in this Schedule 13D. Item 7. Material to Be Filed as Exhibits. Exhibit A. Agreement, dated December 15, 2004, by and among the Warburg Pincus Reporting Persons and the representatives of the several underwriters named therein. Exhibit B. Joint Filing Agreement, dated October 6, 2005, by and among the Warburg Pincus Reporting Persons. Page 12 of 13 Pages SIGNATURES After reasonable inquiry and to the best of our knowledge and belief, the undersigned certify that the information set forth in this statement is true, complete and correct. Dated: October 5, 2005 WARBURG, PINCUS EQUITY PARTNERS, L.P. By: Warburg Pincus Partners LLC, its General Partner By: Warburg Pincus & Co., its Managing Member By: /s/ Scott A. Arenare ------------------------------------ Name: Scott A. Arenare Title: Partner Dated: October 5, 2005 WARBURG PINCUS & CO. By: /s/ Scott A. Arenare ------------------------------------ Name: Scott A. Arenare Title: Partner Dated: October 5, 2005 WARBURG PINCUS LLC By: /s/ Scott A. Arenare ------------------------------------ Name: Scott A. Arenare Title: Member Dated: October 5, 2005 WARBURG PINCUS PARTNERS LLC By: Warburg Pincus & Co., its Managing Member By: /s/ Scott A. Arenare ------------------------------------ Name: Scott A. Arenare Title: Partner SCHEDULE I Set forth below is the name, position and present principal occupation of each of the general partners of Warburg Pincus & Co. ("WP") and members of Warburg Pincus LLC ("WP LLC"). The sole general partner of Warburg Pincus Private Equity IX, L.P. ("WP IX") is Warburg Pincus IX, LLC ("WP IX LLC"), an indirect subsidiary of WP. WP IX, WP IX LLC, WP and WP LLC are hereinafter collectively referred to as the "Reporting Entities". Except as otherwise indicated, the business address of each of such persons is 466 Lexington Avenue, New York, New York 10017, and each of such persons is a citizen of the United States. GENERAL PARTNERS OF WP
- ----------------------------------- -------------------------------------------------------------------------------------- PRESENT PRINCIPAL OCCUPATION IN ADDITION TO POSITION WITH WP, AND POSITIONS NAME WITH THE REPORTING ENTITIES - ----------------------------------- -------------------------------------------------------------------------------------- Joel Ackerman Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Scott A. Arenare Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Gregory Back Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- David Barr Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Larry Bettino Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Harold Brown Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Sean D. Carney Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Mark Colodny Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Timothy J. Curt Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- W. Bowman Cutter Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Cary J. Davis Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Michael Graff Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Patrick T. Hackett Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Jeffrey A. Harris Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Stewart J. Hen Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- William H. Janeway Partner of WP; Member and Vice Chairman of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Julie A. Johnson Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Chansoo Joung Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Peter R. Kagan Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Charles R. Kaye Managing General Partner of WP; Managing Member and Co-President of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Henry Kressel Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Joseph P. Landy Managing General Partner of WP; Managing Member and Co-President of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Sidney Lapidus Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Kewsong Lee Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Jonathan S. Leff Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Philip Mintz Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Rodman W. Moorhead III Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- James Neary Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Dalip Pathak Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Lionel I. Pincus Partner of WP; Member and Chairman of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Michael F. Profenius Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Stan Raatz Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Henry B. Schacht Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Steven G. Schneider Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Mimi Strouse Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Barry Taylor Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Christopher H. Turner Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- - ----------------------------------- -------------------------------------------------------------------------------------- John L. Vogelstein Partner of WP; Member and Vice Chairman of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- John R. Vrolyk Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Elizabeth H. Weatherman Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- David J. Wenstrup Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Rosanne Zimmerman Partner of WP; Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Pincus & Company LLC* - ----------------------------------- -------------------------------------------------------------------------------------- NL & Co.** - ----------------------------------- --------------------------------------------------------------------------------------
- --------------------- * New York limited liability company; primary activity is ownership interest in WP and WP LLC ** New York limited partnership; primary activity is ownership interest in WP. MEMBERS OF WP LLC
- ----------------------------------- -------------------------------------------------------------------------------------- PRESENT PRINCIPAL OCCUPATION IN ADDITION TO POSITION WITH WP LLC, AND POSITIONS NAME WITH THE REPORTING ENTITIES - ----------------------------------- -------------------------------------------------------------------------------------- Joel Ackerman Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Scott A. Arenare Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Gregory Back Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- David Barr Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Larry Bettino Member and Managing Director of WP LLC, Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Harold Brown Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Sean D. Carney Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Stephen John Coates (1) Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Mark Colodny Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Timothy J. Curt Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- W. Bowman Cutter Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Cary J. Davis Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Rajiv Ghatalia (2) Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Michael Graff Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Patrick T. Hackett Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Jeffrey A. Harris Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Stewart J. Hen Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Sung-Jin Hwang (3) Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- William H. Janeway Member and Vice Chairman of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Julie A. Johnson Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Chansoo Joung Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Peter R. Kagan Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Charles R. Kaye Managing Member and Co-President of WP LLC; Managing General Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Rajesh Khanna (2) Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Henry Kressel Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Joseph P. Landy Managing Member and Co-President of WP LLC; Managing General Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Sidney Lapidus Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Kewsong Lee Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Jonathan S. Leff Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- David Li (4) Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Nicholas J. Lowcock (1) Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- John W. MacIntosh (5) Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Philip Mintz Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Rodman W. Moorhead III Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- James Neary Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Bilge Ogut (6) Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Dalip Pathak Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Lionel I. Pincus Member and Chairman of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Pulak Chandan Prasad (2) Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Michael F. Profenius Member and Managing Director of WP LLC; Partner of WP Stan Raatz Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Henry B. Schacht Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Steven G. Schneider Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Joseph C. Schull (5) Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Mimi Strouse Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Chang Q. Sun (4) Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Barry Taylor Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Christopher H. Turner Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- John L. Vogelstein Member and Vice Chairman of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- John R. Vrolyk Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Elizabeth H. Weatherman Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- David J. Wenstrup Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Peter Wilson (1) Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Jeremy S. Young (1) Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Rosanne Zimmerman Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Pincus & Company LLC* - ----------------------------------- --------------------------------------------------------------------------------------
(1) Citizen of United Kingdom (2) Citizen of India (3) Citizen of Korea (4) Citizen of Hong Kong (5) Citizen of Canada (6) Citizen of Turkey * New York limited liability company; primary activity is ownership interest in WP and WP LLC As of October 1, 2005 MEMBERS OF WP LLC
- ----------------------------------- -------------------------------------------------------------------------------------- PRESENT PRINCIPAL OCCUPATION IN ADDITION TO POSITION WITH WP LLC, AND POSITIONS NAME WITH THE REPORTING ENTITIES - ----------------------------------- -------------------------------------------------------------------------------------- Joel Ackerman Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Scott A. Arenare Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Gregory Back Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- David Barr Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Larry Bettino Member and Managing Director of WP LLC, Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Harold Brown Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Sean D. Carney Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Stephen John Coates (1) Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Mark Colodny Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Timothy J. Curt Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- W. Bowman Cutter Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Cary J. Davis Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Oliver M. Goldstein Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Michael Graff Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Patrick T. Hackett Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Jeffrey A. Harris Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Stewart J. Hen Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Sung-Jin Hwang (2) Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- William H. Janeway Member and Vice Chairman of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Julie A. Johnson Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Peter R. Kagan Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Charles R. Kaye Managing Member and Co-President of WP LLC; Managing General Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Rajesh Khanna (3) Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Henry Kressel Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Joseph P. Landy Managing Member and Co-President of WP LLC; Managing General Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Sidney Lapidus Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Kewsong Lee Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Jonathan S. Leff Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Reuben S. Leibowitz Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- David Li (4) Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Nicholas J. Lowcock (1) Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- John W. MacIntosh (5) Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Rodman W. Moorhead III Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- James Neary Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Bilge Ogut (6) Member and Managing Director of WP LLC - ------------------------------------ ------------------------------------------------------------------------------------- Dalip Pathak Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- - ----------------------------------- -------------------------------------------------------------------------------------- Lionel I. Pincus Member and Chairman of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Pulak Chandan Prasad (3) Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Michael F. Profenius Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Stan Raatz Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Henry B. Schacht Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Steven G. Schneider Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Joseph C. Schull (5) Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Mimi Strouse Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Chang Q. Sun (4) Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Barry Taylor Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Christopher H. Turner Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- John L. Vogelstein Member and Vice Chairman of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- John R. Vrolyk Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Elizabeth H. Weatherman Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- David J. Wenstrup Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Peter Wilson (1) Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Jeremy S. Young (1) Member and Managing Director of WP LLC - ----------------------------------- -------------------------------------------------------------------------------------- Rosanne Zimmerman Member and Managing Director of WP LLC; Partner of WP - ----------------------------------- -------------------------------------------------------------------------------------- Pincus & Company LLC* - ----------------------------------- --------------------------------------------------------------------------------------
(7) Citizen of United Kingdom (8) Citizen of Korea (9) Citizen of India (10) Citizen of Hong Kong (11) Citizen of Canada (12) Citizen of Turkey * New York limited liability company; primary activity is ownership interest in WP and WP LLC EX-99.A 3 w3002432c.txt LOCK-UP LETTER AGREEMENT 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 York 10019 Ladies and Gentlemen: The undersigned understands that you and certain other firms (the "Underwriters") propose to enter into an Underwriting Agreement (the "Underwriting Agreement") providing for the purchase by the Underwriters of shares (the "Shares") of Common Stock, par value $0.001 per share (the "Common Stock"), of Sunesis Pharmaceuticals, Inc., a Delaware corporation (the "Company"), and that the Underwriters propose to reoffer the Shares to the public (the "Offering"). In consideration of the execution of the Underwriting Agreement by the Underwriters, and for other good and valuable consideration, the undersigned hereby irrevocably agrees that, without the prior written consent of Lehman Brothers Inc. and SG Cowen & Co., LLC, on behalf of the Underwriters, the undersigned will not, directly or indirectly, (1) offer for sale, sell, pledge, or otherwise dispose of (or enter into any transaction or device that is designed to, or could be expected to, result in the disposition by any person at any time in the future of) any shares of Common Stock (including, without limitation, shares of Common Stock that may be deemed to be beneficially owned by the undersigned in accordance with the rules and regulations of the Securities and Exchange Commission and shares of Common Stock that may be issued upon exercise of any option or warrant) or securities convertible into or exchangeable for Common Stock, or (2) enter into any swap or other derivatives transaction that transfers to another, in whole or in part, any of the economic benefits or risks of ownership of shares of Common Stock, whether any such transaction described in clause (1) or (2) above is to be settled by delivery of Common Stock or other securities, in cash or otherwise, for a period of 180 days after the date of the final prospectus relating to the Offering (such 180-day period, the "Lock-Up Period"). The foregoing paragraph shall not apply to (1) transfers of Common Stock or securities convertible into or exchangeable or exercisable for any shares of Common Stock made as a bona fide gift or gifts, provided that the donee or donees thereof agree in writing to be bound by the terms of this Lock-Up Letter Agreement prior to such transfer, (2) transfers of Common Stock or securities convertible into or exchangeable or exercisable for any shares of Common Stock to an immediate family member of the undersigned or to any trust for the direct or indirect benefit of the undersigned or an immediate family member of the undersigned, provided that the transferee agrees in writing to be bound by the terms of this Lock-Up Letter Agreement prior to such transfer and (3) distributions to partners, members, shareholders or affiliates of the undersigned, provided that the undersigned is a limited partnership, limited liability company or corporation and the distributees thereof agree in writing to be bound by the terms of this Lock-Up Letter Agreement prior to such distribution. Notwithstanding the foregoing, if (1) during the last 17 days of the Lock-Up Period, the Company issues an earnings release or material news or a material event relating to the Company occurs or (2) prior to the expiration of the Lock-Up Period, the Company announces that it will release earnings results during the 16-day period beginning on the last day of the Lock-Up Period, then the restrictions imposed by this Lock-Up Letter Agreement shall continue to apply until the expiration of the 18-day period beginning on the issuance of the earnings release or the announcement of the material news or the occurrence of the material event, unless Lehman Brothers Inc. and SG Cowen & Co., LLC waive, in writing, such extension. In furtherance of the foregoing, the Company and its transfer agent are hereby authorized to decline to make any transfer of securities if such transfer would constitute a violation or breach of this Lock-Up Letter Agreement. It is understood that, if the Company notifies the Underwriters that it does not intend to proceed with the Offering, if the Underwriting Agreement does not become effective, or if the Underwriting Agreement (other than the provisions thereof that survive termination) shall terminate or be terminated prior to payment for and delivery of the Shares, the undersigned shall have no further obligations under this Lock-Up Letter Agreement. The undersigned understands that the Company and the Underwriters will proceed with the Offering in reliance on this Lock-Up Letter Agreement. Whether or not the Offering actually occurs depends on a number of factors, including market conditions. Any Offering will only be made pursuant to an Underwriting Agreement, the terms of which are subject to negotiation between the Company and the Underwriters. The terms of this Lock-Up Letter Agreement shall be construed in accordance with the laws of the State of New York. [Signature Page Follows] -2- The undersigned hereby represents and warrants that the undersigned has full power and authority to enter into this Lock-Up Letter Agreement and that, upon request, the undersigned will execute any additional documents necessary in connection with the enforcement hereof. Any obligations of the undersigned shall be binding upon the heirs, personal representatives, successors and assigns of the undersigned. Very truly yours, WARBURG PINCUS EQUITY PARTNERS, L.P. By: WARBURG PINCUS & CO. It's General Partner ---------------------------------------- (Name of Stockholder - Please Print) /s/ Jonathan Leff ---------------------------------------- (Signature) Jonathan Leff ---------------------------------------- (Name of Signatory if Stockholder is an entity--Please Print) Partner ---------------------------------------- (Title of Signatory if Stockholder is an entity--Please Print) Dated: December 15, 2004 ----------------- -3- The undersigned hereby represents and warrants that the undersigned has full power and authority to enter into this Lock-Up Letter Agreement and that, upon request, the undersigned will execute any additional documents necessary in connection with the enforcement hereof. Any obligations of the undersigned shall be binding upon the heirs, personal representatives, successors and assigns of the undersigned. Very truly yours, WARBURG PINCUS NETHERLANDS EQUITY PARTNERS I, C.V. By: WARBURG PINCUS & CO. It's General Partner ---------------------------------------- (Name of Stockholder - Please Print) /s/ Jonathan Leff ---------------------------------------- (Signature) Jonathan Leff ---------------------------------------- (Name of Signatory if Stockholder is an entity--Please Print) Partner ---------------------------------------- (Title of Signatory if Stockholder is an entity--Please Print) Dated: December 15, 2004 ----------------- -4- The undersigned hereby represents and warrants that the undersigned has full power and authority to enter into this Lock-Up Letter Agreement and that, upon request, the undersigned will execute any additional documents necessary in connection with the enforcement hereof. Any obligations of the undersigned shall be binding upon the heirs, personal representatives, successors and assigns of the undersigned. Very truly yours, WARBURG PINCUS NETHERLANDS EQUITY PARTNERS II, C.V. By: WARBURG PINCUS & CO. It's General Partner ---------------------------------------- (Name of Stockholder - Please Print) /s/ Jonathan Leff ---------------------------------------- (Signature) Jonathan Leff ---------------------------------------- (Name of Signatory if Stockholder is an entity--Please Print) Partner ---------------------------------------- (Title of Signatory if Stockholder is an entity--Please Print) Dated: December 15, 2004 ----------------- -5- The undersigned hereby represents and warrants that the undersigned has full power and authority to enter into this Lock-Up Letter Agreement and that, upon request, the undersigned will execute any additional documents necessary in connection with the enforcement hereof. Any obligations of the undersigned shall be binding upon the heirs, personal representatives, successors and assigns of the undersigned. Very truly yours, WARBURG PINCUS NETHERLANDS EQUITY PARTNERS III, C.V. By: WARBURG PINCUS & CO. It's General Partner ---------------------------------------- (Name of Stockholder - Please Print) /s/ Jonathan Leff ---------------------------------------- (Signature) Jonathan Leff ---------------------------------------- (Name of Signatory if Stockholder is an entity--Please Print) Partner ---------------------------------------- (Title of Signatory if Stockholder is an entity--Please Print) Dated: December 15, 2004 ----------------- -6- EX-99.B 4 w3002432d.txt JOINT FILING AGREEMENT 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 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. Dated: October 6, 2005 WARBURG, PINCUS EQUITY PARTNERS, L.P. By: Warburg Pincus Partners LLC, its General Partner By: Warburg Pincus & Co., its Managing Member By: /s/ Scott A. Arenare ---------------------------------- Name: Scott A. Arenare Title: Partner Dated: October 6, 2005 WARBURG PINCUS & CO. By: /s/ Scott A. Arenare ---------------------------------- Name: Scott A. Arenare Title: Partner Dated: October 6, 2005 WARBURG PINCUS LLC By: /s/ Scott A. Arenare ---------------------------------- Name: Scott A. Arenare Title: Member Dated: October 6, 2005 WARBURG PINCUS PARTNERS LLC By: Warburg Pincus & Co., its Managing Member By: /s/ Scott A. Arenare ---------------------------------- Name: Scott A. Arenare Title: Partner -----END PRIVACY-ENHANCED MESSAGE-----