ARIAD Pharmaceuticals, Inc. (NASDAQ:ARIA) today announced the appointment of Alexander J. Denner, Ph.D. to a two-year term on the Company’s Board of Directors, effective immediately. With the addition of Dr. Denner, who serves as the chief investment officer and founding partner of Sarissa Capital Management LP, the Board now comprises nine directors, eight of whom are independent. The Company will also appoint another independent director to the Board, who will be selected by the Board and be subject to Dr. Denner’s concurrence. “We welcome Dr. Denner to the Company’s Board and look forward to working with him to continue building shareholder value, which we all believe is best achieved through successful commercialization of Iclusig ® (ponatinib), as well as the ongoing development of our strong pipeline of important cancer medicines,” said Harvey J. Berger, M.D., chairman and chief executive officer of ARIAD. “I am very pleased by the outcome of our recent discussions with ARIAD. Importantly, the agreement we reached offers the opportunity to immediately work together with the existing Board to maximize the potential of Iclusig and the pipeline of cancer medicines and to build value for all shareholders,” said Dr. Denner. Previously, Dr. Denner served as a senior managing director at Icahn Capital, a portfolio manager at Viking Global Investors, and a portfolio manager at Morgan Stanley Investment Management. Dr. Denner serves as a director of Biogen Idec Inc. and VIVUS, Inc., both biopharmaceutical companies. Dr. Denner brings a strong background overseeing the operations and research and development of healthcare companies and evaluating corporate governance matters. He also has extensive experience as an investor, particularly with respect to healthcare companies, and has broad healthcare-industry knowledge. About ARIAD ARIAD Pharmaceuticals, Inc., headquartered in Cambridge, Massachusetts and Lausanne, Switzerland, is an integrated global oncology company focused on transforming the lives of cancer patients with breakthrough medicines. ARIAD is working on new medicines to advance the treatment of various forms of chronic and acute leukemia, lung cancer and other difficult-to-treat cancers. ARIAD utilizes computational and structural approaches to design small-molecule drugs that overcome resistance to existing cancer medicines. For additional information, visit http://www.ariad.com or follow ARIAD on Twitter ( @ARIADPharm). About Sarissa Capital Management LP Sarissa Capital Management LP, headquartered in Greenwich, Connecticut, is an investment advisor to private investment funds. Sarissa seeks to achieve superior risk-adjusted returns by constructing a portfolio, primarily across healthcare and related sectors, where there is a significant discrepancy between market value and intrinsic value. Sarissa will frequently use activism to close this discrepancy.