ImClone Systems Inc.

Dr. David Sidransky is the Director of the Head and Neck Cancer Research Division at Johns Hopkins University School of Medicine. In addition, he is Professor of Oncology, Otolaryngology-Head and Neck Surgery, Cellular & Molecular Medicine, Urology, Genetics, and Pathology at Johns Hopkins University and Hospital. Dr. Sidransky is certified in Internal Medicine and Medical Oncology by the American Board of Medicine. He has served as a Director of Imclone since January 2004. He is a founder of several private biotechnology companies and has served on the scientific advisory boards of many private and public companies including Medimmune, Telik, Roche and Amgen. He was formerly on the Board of Scientific Counselors at the NIDCR and is currently a member of the Recombinant DNA Advisory Committee at the National Institute of Health (NIH). Dr. Sidransky is a member of numerous editorial boards. He has over 250 peer-reviewed publications, has contributed more than 40 cancer reviews, and also has numerous issued biotechnology patents. He has been the recipient of many awards and honors, including the 1997 Sarstedt International Prize from the German Society of Clinical Chemistry, the 1998 Alton Ochsner Award Relating Smoking and Health by the American College of Chest Physicians, and the 2004 Hinda and Richard Rosenthal Award from the American Association of Cancer Research.

In late January 2009, Dr. Denner was interviewed by Messrs. LeBuhn, Micati and Salisbury, and Professor Mulligan was interviewed by Drs. Ando and Geltosky and, at their invitation, Dr. Ivan Horak, the Company s Executive Vice President, Research and Development and Chief Scientific Officer. At a meeting of the Governance and Nominating Committee held on January 28, 2009, the Committee determined to recommend to the Board the nominations of Dr. Denner and Professor Mulligan for election as Class I Directors at the Annual Meeting. At a meeting of the Board held later that day, the Board determined to accept the recommendation of the Governance and Nominating Committee and nominated Dr. Denner and Professor Mulligan for election as Class I Directors at the Annual Meeting. At the request of the Icahn Group, the Board committed to the Icahn Group that if, for any reason, the Board subsequently determined not to nominate both Dr. Denner and Professor Mulligan, or to nominate any persons in addition to Dr. Denner and Professor Mulligan, for election as Class I Directors at the Annual Meeting, the Company would give the Icahn Group prompt written notice thereof and the Company would take all necessary action to permit the Icahn Group to nominate persons named in a notice of nomination for election to the Board which the Icahn Group would deliver to the Company on or before the close of business on the tenth day following the date on which the Icahn Group received such written notice from the Company.

Mr. Icahn has been our principal beneficial stockholder and has served as chairman of the board and as a director since 1994. Mr. Icahn has served as chairman of the board and a director of Starfire Holding Corporation ("Starfire"), a privately-held holding company, and chairman of the board and a director of various subsidiaries of Starfire, since 1984. Since August 2007, through his position as Chief Executive Officer of Icahn Capital LP, a wholly-owned subsidiary of Icahn Enterprises L.P. ("Icahn Enterprises"), and certain related entities, Mr. Icahn's principal occupation is managing private investment funds, including Icahn Partners LP, Icahn Partners Master Fund LP, Icahn Partners Master Fund II LP, and Icahn Partners Master Fund III LP. Prior to August 2007, Mr. Icahn conducted this occupation through his entities CCI Onshore Corp. and CCI Offshore Corp., since September 2004. Since November 1990, Mr. Icahn has been chairman of the board of Icahn Enterprises G.P. Inc., the general partner of Icahn Enterprises. Icahn Enterprises is a diversified holding company engaged in a variety of businesses, including investment management, metals, real estate, and home fashion. Mr. Icahn was chairman of the board and president of Icahn & Co., Inc., a registered broker-dealer and a member of the National Association of Securities Dealers, from 1968 to 2005. From October 1998 through May 2004, Mr. Icahn was the president and a director of Stratosphere Corporation, the owner and operator of the Stratosphere Hotel and Casino in Las Vegas, which until February 2008, was a subsidiary of Icahn Enterprises. From September 2000 to February 2007, Mr. Icahn served as the chairman of the board of GB Holdings, Inc., which owned an interest in Atlantic Coast Holdings, Inc., the owner and operator of The Sands casino in Atlantic City until November 2006. Mr. Icahn has been chairman of the board and a director of XO Holdings, Inc., a telecommunications services provider, since February 2006, and of its predecessor from January 2003 to February 2006. Mr. Icahn has served as a Director of Cadus Corporation, a company engaged in the ownership and licensing of yeast-based drug discovery technologies since July 1993. In May 2005, Mr. Icahn became a director of Blockbuster Inc., a provider of in-home movie rental and game entertainment. In October 2005, Mr. Icahn became a director of WestPoint International, Inc., a manufacturer of bed and bath home fashion products. In September 2006, Mr. Icahn became a director of ImClone Systems Incorporated ("ImClone"), a biopharmaceutical company, and since October 2006, has been the chairman of the board of ImClone. In August 2007, Mr. Icahn became a director of WCI Communities, Inc. ("WCI"), a homebuilding company, and since September 2007, has been the chairman of the board of WCI. In December 2007, Mr. Icahn became a director of Federal-Mogul Corporation ("Federal-Mogul"), a supplier of automotive products, and since January 2008, has been the chairman of the board of Federal-Mogul. In April, 2008, Mr. Icahn became a director of Motricity, Inc., a company that provides mobile content services and solutions. Mr. Icahn received his B.A. from Princeton University.

Mr. Zuerblis owned no shares of the Company's stock at June 30, 2008, nor did he have any options exercisable prior to August 29, 2008.