X0202 3 2007-04-26 0 0000907562 DYAX CORP DYAX 0001397709 Christensen Gustav C/O DYAX CORP. 300 TECHNOLOGY SQUARE CAMBRIDGE MA 02139 0 1 0 0 EVP and Chief Business Officer Common Stock 10000 D Stock Option (right to buy) 3.84 2017-02-26 Common Stock 40000 D This option will become exercisable in forty-eight (48) substantially equal installments at the end of each monthly anniversary of the date of grant (with any fractional shares to be cumulated and to become exercisable at the end of the earliest succeeding monthly period in which a whole share equivalent is accumulated). /s/ Gustav Christensen 2007-04-26