UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant [X] Filed by a Party other than the Registrant [ ] Check the appropriate box: [ ] Preliminary Proxy Statement [ ] Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) [ ] Definitive Proxy Statement [X] Definitive Additional Materials [ ] Soliciting Material Pursuant to Section 240.14a-12 ImClone Systems Incorporated - -------------------------------------------------------------------------------- (Name of Registrant as Specified In Its Charter) ------------------------------------------------------------------------------- (Name of Person(s) Filing Proxy Statement if other than the Registrant) Payment of Filing Fee (Check the appropriate box): [X] No fee required. [ ] Fee computed on table below per Exchange Act Rules 14a-6(i)(1)and 0-11. (1) Title of each class of securities to which transaction applies: -------------------------------------------------------------------------- (2) Aggregate number of securities to which transaction applies: -------------------------------------------------------------------------- (3) Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined): -------------------------------------------------------------------------- (4) Proposed maximum aggregate value of transaction: -------------------------------------------------------------------------- (5) Total fee paid: -------------------------------------------------------------------------- [ ] Fee paid previously with preliminary materials. [ ] Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing. (1) Amount Previously Paid: -------------------------------------------------------------------------- (2) Form, Schedule or Registration Statement No.: -------------------------------------------------------------------------- (3) Filing Party: -------------------------------------------------------------------------- (4) Date Filed: -------------------------------------------------------------------------- IMCLONE SYSTEMS INCORPORATED 180 Varick Street New York, NY 10014 (212) 645-1405 On May 22, 2002, ImClone Systems Incorporated (the "Company") announced that Samuel D. Waksal, Ph.D., ("Dr. Samuel Waksal") voluntarily resigned from his positions as President, Chief Executive Officer and Director of the Company and that Harlan W. Waksal, M.D., previously Executive Vice President and Chief Operating Officer of the Company, would succeed him in the positions of President and Chief Executive Officer. As a result of his resignation, Dr. Samuel Waksal is not available to stand for election to the Board of Directors of the Company. The Board of Directors has elected not to propose a substitute nominee. Accordingly, ten, rather than eleven, directors will be elected at the Company's Annual Meeting of Stockholders (the "Annual Meeting"). The Annual Meeting was initially convened on May 23, 2002 and was adjourned until June 11, 2002. Details regarding the adjourned Annual Meeting are set forth in the attached press release. IMCLONE SYSTEMS INCORPORATED /s/ Daniel S. Lynch ----------------------------- By: Daniel S. Lynch Secretary New York, New York June 4, 2002 Contact: Andrea F. Rabney Stefania A. Bethlen Vice President Manager Corporate Communications Corporate Communications ImClone Systems Incorporated ImClone Systems Incorporated (646) 638-5058 (646) 638-5046 For Immediate Release - --------------------- IMCLONE SYSTEMS CONFIRMS 2002 ANNUAL MEETING New York, NY - June 4, 2002 -- ImClone Systems Incorporated (Nasdaq: IMCL) confirmed today that its annual meeting of shareholders will take place on June 11, 2002 at 10:00 A.M. E.T. at the Company's facility at 33 Chubb Way, Somerville, New Jersey. Shareholders may call (646) 638-6402 for directions to the meeting. ImClone Systems Incorporated is committed to advancing oncology care by developing a portfolio of targeted biologic treatments, designed to address the medical needs of patients with a variety of cancers. The Company's three programs include growth factor blockers, cancer vaccines and angiogenesis inhibitors. ImClone Systems' strategy is to become a fully integrated biopharmaceutical company, taking its development programs from the research stage to the market. ImClone Systems is headquartered in New York with additional administration and manufacturing facilities in Somerville, New Jersey. The matters discussed in this news release may include forward-looking statements which involve potential risks and uncertainties. Important factors that may cause actual results to differ materially include, but are not limited to, the risks and uncertainties associated with completing preclinical and clinical trials of the Company's compounds that demonstrate such compounds' safety and effectiveness; obtaining additional financing to support the Company's operations; obtaining and maintaining regulatory approval for such compounds and complying with other governmental regulations applicable to the Company's business; obtaining the raw materials necessary in the development of such compounds; consummating collaborative arrangements with corporate partners for product development; achieving milestones under collaborative arrangements with corporate partners; developing the capacity to manufacture, market and sell the Company's products, either directly or with collaborative partners; developing market demand for and acceptance of such products; competing effectively with other pharmaceutical and biotechnological products; obtaining adequate reimbursement from third party payers; attracting and retaining key personnel; obtaining patent protection for discoveries and risks associated with commercial limitations imposed by patents owned or controlled by third parties. The Company does not undertake any obligation to update any forward-looking statements, whether as a result of new information, future events or otherwise. # # #