X0202 4 2007-05-01 0 0001040593 CARRIZO OIL & GAS INC CRZO 0001044584 JOHNSON S P IV 1000 LOUISIANA STREET SUITE 1500 HOUSTON TX 77002 1 1 0 0 President and CEO Common Stock 2007-05-01 4 S 0 350 36.55 D 544073 D Common Stock 2007-05-01 4 S 0 100 36.56 D 543973 D Common Stock 2007-05-01 4 S 0 450 36.81 D 543523 D Common Stock 2007-05-01 4 S 0 300 36.79 D 543223 D Common Stock 2007-05-01 4 S 0 600 36.82 D 542623 D Common Stock 2007-05-01 4 S 0 300 36.83 D 542323 D Common Stock 2007-05-01 4 S 0 100 36.95 D 542223 D Common Stock 2007-05-01 4 S 0 200 36.96 D 542023 D Common Stock 2007-05-01 4 S 0 300 36.99 D 541723 D Common Stock 2007-05-01 4 S 0 200 37.02 D 541523 D Common Stock 2007-05-01 4 S 0 100 37.07 D 541423 D The sales reported herein were effected pursuant to a Rule 10b-51 trading plan adopted by the reporting person in January 2007. /s/Paul F. Boling, attorney-in-fact 2007-05-03