X0202 4 2004-05-14 0000874294 ICOS CORP / DE ICOS 0000902012 GATES WILLIAM H III ONE MICROSOFT WAY REDMOND WA 98052-6399 1 0 0 0 Stock Option (Right to Buy) 31.11 2004-05-14 4 A 0 12000 0 A 2014-05-14 Common Stock 12000 12000 D Vests in two equal amounts as of each of the next two annual stockholders' meetings of ICOS Corporation, assuming continued service on the Board of Directors of ICOS Corporation during such periods. Michael Larson, on behalf of William H. Gates III. Authorized under power of attorney dated 3/14/2001 by William H. Gates III, filed on 3/19/2001 with Cascade Investment's Schedule 13D, SEC File No. 005-52919. 2004-05-17