EXHIBIT 10.12 AMENDMENT NO. 1 TO INVESTMENT AGREEMENT (Series E Preferred Stock) This Amendment No. 1 to Investment Agreement (the "Amendment") dated as of --------- January 14, 2000 (the "Effective Date"), is entered into by and among Greenwich -------------- Technology Partners, Inc., a Delaware corporation (the "Corporation") and those ----------- parties executing the signature page hereto, representing at least 66 2/3% of the Corporation's outstanding Series E Preferred Stock, $0.01 par value per share (the "Series E Shares"). --------------- This Amendment amends that certain Investment Agreement (Series E Preferred Stock) dated September 10, 1999 (the "Original Agreement"). ------------------ Capitalized terms used herein and not otherwise defined, shall have the meanings set forth in the Original Agreement. NOW, THEREFORE, in accordance with Section 10.2 of the Original Agreement, the parties hereto agree that the Original Agreement shall be amended as follows: 1. Section 2.2(b) shall be deleted in its entirety and replaced with the following: "(b) One or more additional closings (each an "Additional Closing") ------------------ of the sale and purchase of up to an additional 4,265,402 of the Series E Shares under this Agreement shall take place at the offices of Testa, Hurwitz & Thibeault, LLP, 125 High Street, Boston, Massachusetts, 02110, at 1:00 p.m. on such date or dates as is mutually agreeable to the Additional Investors participating in such Additional Closing, and the Company." 2. Section 2.2(c) shall be deleted in its entirety and replaced with the following: "(c) The Initial Closing and the Additional Closings are each referred to herein as a "Closing"." ------- 3. Section 2.5 shall be deleted in its entirety and replaced with the following: "2.5 Counterpart Signature Pages. At each Additional Closing, the Additional Investors participating in such Additional Closing shall execute a counterpart signature page to this Agreement, the Shareholders' Agreement and the Registration Rights Agreement." 4. Exhibit A, Schedule of Investors shall be deleted in its entirety and --------- replaced with the attached Exhibit A hereto. --------- 5. All other provisions of the Original Agreement shall be unmodified and shall remain in full force and effect. 6. This Amendment may be signed in one or more counterparts, each of which shall be deemed to be an original and all of which shall be considered one and the same agreement and shall become effective when each of the parties has signed and delivered a counterpart to the other. 7. This Amendment shall be governed by and interpreted in accordance with the laws of the State of Delaware, but without giving effect to any Delaware choice of law provisions which might otherwise make the laws of a difference jurisdiction govern or apply. [Remainder of Page Left Blank Intentionally] IN WITNESS WHEREOF, this Amendment has been executed as of the date and year first above written. CORPORATION: GREENWICH TECHNOLOGY PARTNERS, INC. By: /s/ Dennis M. Goett --------------------------------------- Name: Dennis M. Goett Title: CFO INVESTORS: CHASE VENTURE CAPITAL ASSOCIATES, L.P. By: By: /s/ Michael R. Hannon --------------------------------------- Name: Michael R. Hannon Title: General Partner CREDIT SUISSE FIRST BOSTON VENTURE FUND I, L.P. By: QBB Management I, LLC, Its General Partner By: /s/ George Bourtos --------------------------------------- Name: George Bourtos Title: Member STV PARTNERS III, L.L.C. By: By: /s/ Jerome C. Silvey --------------------------------------- Name: Jerome C. Silvey Title: Managing Member FG-GTPF By: By: /s/ Kathleen E. Shepphird ---------------------------------------- Name: Kathleen E. Shepphird Title: Managing Director VANTAGEPOINT COMMUNICATIONS PARTNERS, LP By: By: /s/ William Jefferson Marshall ---------------------------------------- Name: William Jefferson Marshall Title: Managing Director VANTAGEPOINT VENTURE PARTNERS 1996, L.P. By: Vantagepoint Communications Associates, LLC, Its General Partner By: /s/ William Jefferson Marshall ---------------------------------------- Name: William Jefferson Marshall Title: Managing Director WHEATLEY PARTNERS II L.P. By: By: /s/ Irwin Lieber --------------------------------------- Name: Irwin Lieber Title: General Partner EXHIBIT A --------- Schedule of Investors --------------------- Initial Closing --------------- Aggregate Number of Series E Purchase Price Shares to be for Series E Name of Series E Investor Purchased Shares - ------------------------- --------- ------ Chase Venture Capital Associates, L.P. 4,739,337 $10,000,001.07 Credit Suisse First Boston Venture Fund I, L.P. 236,967 $ 500,000.37 STV Partners III, L.L.C. 473,934 $ 1,000,000.74 FG-GTPF 236,967 $ 500,000.37 Vantagepoint Communications Partners, LP 947,867 $ 1,999,999.37 Vantagepoint Venture Partners 1996, L.P. 473,934 $ 1,000,000.74 Wheatley Partners II L.P. 473,934 $ 1,000,000.74 TOTAL: 7,582,940 $16,000,003.40 First Additional Closing ------------------------ Aggregate Number of Series E Purchase Price Shares to be for Series E Name of Series E Investor Purchased Shares - ------------------------- --------- ------ Edwin J. O'Mara 7,108 14,997.88 John Stopper 23,696 49,998.56 Laurence Pinkus 4,739 9,999.29 Kevin Bock 50,236 105,997.96 James Tucci 59,241 124,998.51 Robert Berlin 11,848 24,999.28 John V. Wheeler 11,848 24,999.28 L. David Cardenas and Stacey J. Cardenas 2,369 4,998.59 Louis J. Mischianti 23,696 49,998.56 James A. Conroy 4,739 9,999.29 Emil A. Roymans 2,369 4,998.59 Paul A. Rubin 7,109 14,999.99 Scott M. Freeman 4,739 9,999.29 Michael J. Schmidtberger 4,739 9,999.29 Michael A. Grossman 5,924 12,499.64 Karl Frey 11,848 24,999.28 EPFL Partners 4,739 9,999.29 John D. Miller 11,848 24,999.28 Deborah A. Farrington 2,369 4,998.59 Gerard F. Becker and Christine B. Becker 11,848 24,999.28 Nils A. Johnson and Patricia A. Johnson 9,478 19,998.58 Clemente Family Trust 9,478 19,998.58 BMZ Investments 23,696 49,998.56 Richard J. Testa 9,952 20,998.72 Anthony M. Carvette 23,696 49,998.56 Greg Berger 5,924 12,499.64 Kevin J. Kitson 47,393 99,999.23 Brian J. Flynn 4,739 9,999.29 Angus M. Green 18,957 39,999.27 Joseph A. Cabrera 11,848 24,999.28 Clint Heiden 23,696 49,998.56 Stephen B. Seigel 47,393 99,999.23 David HW Turner 11,848 24,999.28 Dennis M. Goett 18,957 39,999.27 IRA FBO Dennis M. Goett 28,435 59,997.85 S. Elizabeth Press and Mark Andrew Mohn 10,000 21,100 Paul C. Carey 18,957 39,999.27 Samer Tawfik 142,180 299,999.80 Highwood Partners LLC 14,218 29,999.98 William C. Cox III and Beatrice I. Cox 9,478 19,998.58 Gregory W. Carney 11,848 24,999.28 Paul T. Goldman 7,109 14,999.99 Donald K. Bryan and Belinda B. Bryan 11,848 24,999.28 Edward Cettina 7,109 14,999.99 Elio Cettina 7,109 14,999.99 The CIT Group/Equity Investments, Inc. 473,934 1,000,000.74 Chase Venture Capital Associates, L.P. 473,933 999,998.63 VantagePoint Venture Partners 1996, L.P. 157,820 333,000.20 VantagePoint Communications Partners, L.P. 316,114 667,000.54 Total: 2,224,199 $4,693,059.89 Second Additional Closing ------------------------- Aggregate Number of Series E Purchase Price Shares to be for Series E Name of Series E Investor Purchased Shares ------------------------- --------- ------ Mark B. Templeton 11,848 24,999.28 Mark Wolfenberger 23,696 49,998.56 Frank P. Slattery 4,739 9,999.29 Jeffrey Wrona 4,739 9,999.29 Michael Ma 4,739 9,999.29 Kurt Weber 11,848 24,999.28 UGE Enterprises LLC 4,739 9,999.29 Edgell Street Partners 7,109 14,999.99 Dennis M. Goett 14,218 29,999.98 Jill Catania 4,739 9,999.29 Geryl Darington 11,848 24,999.28 Robert Garbarino 23,696 49,998.56 Donald Henderson 9,478 19,998.58 Bruce M. Tanis 11,848 24,999.28 Peter Cherasia 23,696 49,998.56 Michael Tunstall 35,545 74,999.95 Wayne A. Segal 23,696 49,998.56 Anthony Trousett 23,696 49,998.56 S. Elizabeth Press and Mark Andrew Mohn 20,000 42,200.00 Richard Haverly 100,000 211,000.00 Kevin Barry 4,739 9,999.29 High Street Investors 2000 47,393 99,999.23 TOTAL: 428,049 $903,183.39