X0202 4 2007-04-02 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 2007-04-02 4 S 0 300 34.89 D 547123 D Common Stock 2007-04-02 4 S 0 300 35.08 D 546823 D Common Stock 2007-04-02 4 S 0 300 35.14 D 546523 D Common Stock 2007-04-02 4 S 0 600 35.17 D 545923 D Common Stock 2007-04-02 4 S 0 900 35.18 D 545023 D Common Stock 2007-04-02 4 S 0 300 35.26 D 544723 D Common Stock 2007-04-02 4 S 0 300 35.30 D 544423 D The sales reported herein were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person in January 2007. Paul F. Boling, attorney-in-fact 2007-04-04