X0202 4 2007-09-21 0 0000949039 DIAMOND OFFSHORE DRILLING INC DO 0001249072 DICKERSON LAWRENCE R 15415 KATY FREEWAY SUITE 100 HOUSTON TX 77094 1 1 0 0 President and C.O.O. Common Stock 2007-09-21 4 M 0 1406 22.49 A 1406 D Common Stock 2007-09-21 4 S 0 1406 115.0003 D 0 D Common Stock 2007-09-21 4 M 0 1406 23.65 A 1406 D Common Stock 2007-09-21 4 S 0 1406 115.0003 D 0 D Common Stock 2007-09-21 4 M 0 2812 32.78 A 2812 D Common Stock 2007-09-21 4 S 0 2812 115.0003 D 0 D Common Stock 2007-09-21 4 M 0 2812 39.98 A 2812 D Common Stock 2007-09-21 4 S 0 2812 115.0003 D 0 D Common Stock 2007-09-21 4 M 0 2812 45.77 A 2812 D Common Stock 2007-09-21 4 S 0 2812 115.0003 D 0 D Common Stock 2007-09-21 4 M 0 2812 53.60 A 2812 D Common Stock 2007-09-21 4 S 0 2812 115.0003 D 0 D Common Stock 2007-09-21 4 M 0 2812 61.90 A 2812 D Common Stock 2007-09-21 4 S 0 2812 115.0003 D 0 D Common Stock 2007-09-21 4 M 0 2812 69.38 A 2812 D Common Stock 2007-09-21 4 S 0 2812 115.0003 D 0 D Stock Option (right to buy) 22.49 2007-09-21 4 M 0 1406 0.00 D 2007-05-18 2014-05-18 Common Stock 1406 1407 D Stock Option (right to buy) 23.65 2007-09-21 4 M 0 1406 0.00 D 2007-05-18 2014-07-01 Common Stock 1406 1407 D Stock Option (right to buy) 32.78 2007-09-21 4 M 0 2812 0.00 D 2006-05-18 2014-10-01 Common Stock 2812 1407 D Stock Option (right to buy) 39.98 2007-09-21 4 M 0 2812 0.00 D 2006-05-18 2014-12-31 Common Stock 2812 1407 D Stock Option (right to buy) 45.77 2007-09-21 4 M 0 2812 0.00 D 2006-04-19 2015-04-19 Common Stock 2812 2813 D Stock Option (right to buy) 53.60 2007-09-21 4 M 0 2812 0.00 D 2006-04-19 2015-07-01 Common Stock 2812 2813 D Stock Option (right to buy) 61.90 2007-09-21 4 M 0 2812 0.00 D 2006-04-19 2015-10-03 Common Stock 2812 2813 D Stock Option (right to buy) 69.38 2007-09-21 4 M 0 2812 0.00 D 2006-04-19 2015-12-31 Common Stock 2812 2813 D The options vested on May 18, 2007. The option vest on May 18, 2008. The options vested in two equal annual installments on May 18, 2006 and May 18, 2007. The options vested in two equal annual installments on April 19, 2006 and April 19, 2007. The options vest in two equal annual installments on April 19, 2008 and April 19, 2009. /s/ William C. Long Attorney-in-fact for Lawrence R. Dickerson 2007-09-25