Consulting Agreement - Biogen Inc. and Alexander G. Bearn
March 24, 1998 Alexander G. Bearn, M.D. Executive Director American Philosophical Society 104 South 5th St. Philadelphia, PA 19106-3387 Re: RENEWAL OF CONSULTANCY AGREEMENT Dear Alick: Your Consultancy Agreement with Biogen, Inc., dated April 1, 1991 (the "Agreement"), under which you serve as a member of the Scientific Board of the Company, expires on April 1, 1998. Biogen greatly values your input on the Board and would like to renew the Agreement for an additional three-year period commencing as of April 1, 1998 and ending on April 1, 2001. The terms and conditions of the Agreement will continue to apply during the renewal term except that compensation for your services under the Agreement during the renewal term will be as follows: 1. You will receive (i) a $20,000 per year retainer, (ii) $2,000 per day for attendance at Scientific Board meetings, plus reasonable travel and lodging expenses and (iii) $500 per day for time spent in Biogen's laboratories. 2. Subject to approval by the Stock and Option Plan Administration Committee, on your renewal date, you will be granted an option to purchase 30,000 shares of Biogen Common Stock. The option will vest over three years (33-1/3% per year) and will be exercisable at a price equal to the average of the high and low sales prices on your renewal date. 1 <PAGE> 2 If you agree to renewal of the Agreement on the above terms, please sign both copies of this letter and return one copy to the attention of Anne Marie Cook, Associate General Counsel, Biogen, Inc., 14 Cambridge Center, Cambridge, MA 02142. BIOGEN, INC. By:____________________________ James R. Tobin President and Chief Executive Officer By:____________________________ Phillip A. Sharp Chairman of Scientific Board AGREED TO AND ACCEPTED: _______________________________ Alexander G. Bearn, M.D. 2