X0202 4 2005-07-01 0 0000949039 DIAMOND OFFSHORE DRILLING INC DO 0001249093 KRENEK GARY T 15415 KATY FREEWAY SUITE 100 HOUSTON TX 77094 0 1 0 0 Vice President and C.F.O. Stock Option (right to buy) 53.60 2005-07-01 4 A 0 1375 0.00 A 2006-04-19 2015-07-01 Common Stock 1375 1375 D The options vest in four equal annual installments beginning on April 19, 2006. /s/ William C. Long Attorney-in-Fact for Gary T. Krenek 2005-07-05