X0201 4 2004-03-17 0 0000874294 ICOS CORP / DE ICOS 0001184372 BECK TERESA 22021 - 20TH AVENUE SE BOTHELL WA 98021 1 0 0 0 Stock Option (Right to Buy) 38.6600 2004-03-17 4 A 0 30000 0 A 2014-03-17 Common Stock 30000.00 30000.00 D Vests in two equal amounts as of each of the next two annual stockholder's meetings of ICOS Corporation, assuming continued service on the Board of Directors of ICOS Corporation during such periods; provided, however, that in the event this grant is made within five months prior to an annual meeting of stockholders, vesting shall not commence until the second annual meeting after the date of grant. By: /s/ Susan Aznoff as Attorney-in-Fact 2004-03-18