As filed with the Securities and Exchange Commission on May 18, 2005 UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 20-F/A ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2004 Commission file number: 001-117629 GPC Biotech AG (Exact name of Registrant as specified in its charter) Federal Republic of Germany (Jurisdiction of incorporation or organization) Fraunhoferstrasse 20, D-82152 Martinsried/Munich, Germany (Address of principal executive offices) Securities registered or to be registered pursuant to Section 12(b) of the Act: None. Securities registered or to be registered pursuant to Section 12(g) of the Act. - -------------------------------------------------------------------------------- Title: Ordinary Bearer Shares, without par value American Depository Shares (as evidenced by American Depository Receipts), each representing one Ordinary Bearer Share - -------------------------------------------------------------------------------- Securities for which there is a reporting obligation pursuant to Section 15(d) of the Act: None. As of December 31, 2004, 28,741,194 ordinary shares, of no par value, of GPC Biotech AG were outstanding. Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. X Yes No Indicate by check mark which financial statement item the registrant has elected to follow. Item 17 X Item 18 TABLE OF CONTENTS PART I Item 6: Directors, Senior Management & Employees. . . . . . . . . . . . . 2 PART III Item 19: Exhibits . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 CERTAIN DEFINITIONS In this Amendment No. 1 on Form 20-F/A ("Amendment No. 1") to the annual report of GPC Biotech AG on Form 20-F for the fiscal year ended December 31, 2004 (the "annual report"), unless otherwise provided, references to "GPC Biotech", "the company", "we", "us" and "our" refer to GPC Biotech AG and its wholly owned subsidiary, GPC Biotech Inc. EXPLANATORY NOTE This Amendment No. 1 is being filed solely for the purpose of including additional disclosure in Item 6 regarding our exemptions from certain corporate governance rules of Nasdaq. The disclosure in this Amendment No. 1 speaks as of December 31, 2004. Except for the inclusion of such disclosure in Item 6, this Amendment No. 1 does not purport to amend, update or restate the information in our annual report as filed on March 31, 2005, or reflect any events that have occurred after the date on which the annual report was filed. In connection with this Amendment No. 1, we are including the certifications required by Rule 13a-14(a) under the Securities Exchange Act of 1934, as amended. 1 PART 1 Item 6. Directors, Senior Management & Employees The following paragraphs are added to the disclosure under Item 6 of the Annual Report on Form 20-F for the fiscal year ended December 31, 2004. Marketplace Rules Exemptions Granted by Nasdaq In 2004, in connection with our listing of American Depository Shares representing our ordinary shares on the Nasdaq National Market, Nasdaq granted us two exemptions with respect its Marketplace Rules. Quorum Nasdaq granted us an exemption with respect to Marketplace Rule 4350(f), which requires issuers' by-laws to establish a minimum quorum of 33 1/3 % for any meeting of the holders of common stock. Neither German law nor the rules and regulations promulgated by the Frankfurt Stock Exchange, the primary market for our shares, require a specific quorum for annual general meetings; therefore, our Articles of Association do not provide for a quorum. The absence of a quorum requirement in the Company's Articles of Association is consistent with German law and such a requirement would be contrary to generally accepted business practice in Germany. Shareholder Approval of Stock Option Plans Nasdaq granted us an exemption with respect to Marketplace Rule 4350(i)(1)(A), which requires issuers to obtain shareholder approval prior to the establishment of, or material amendment to, certain stock option or purchase plans. The exact terms and conditions of our equity compensation plans are not the subject of a shareholder vote at the annual general meeting. Instead, our shareholders only vote on the creation of underlying capital to service the equity awards and certain other general terms prescribed by German law and authorize the Management Board or, in respect of awards to be made to the members of our Management Board, the Supervisory Board, to determine the details of our equity compensation plans. It is intended that all such plans be established within the policies and programs approved by our Compensation Committee. PART III Item 19. Exhibits Exhibit Number Description - ------- ----------- 12.3 Certification of the Principal Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. 12.4 Certification of the Principal Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. 2 SIGNATURES Pursuant to the requirements of the Securities Exchange Act, as amended, the registrant certifies that it meets all of the requirements for filing on Form 20-F/A and has duly caused this Amendment No. 1 to its annual report to be signed on its behalf by the undersigned, thereto duly authorized. GPC BIOTECH AG By: /s/ Bernd R. Seizinger --------------------------- Name: Bernd R. Seizinger Title: Chief Executive Officer By: /s/ Mirko Scherer --------------------------- Name: Mirko Scherer Title: Chief Financial Officer 3 May 18, 2005 EXHIBIT INDEX Exhibit Number Description - ------- ----------- 12.3 Certification of the Principal Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. 12.4 Certification of the Principal Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. 4