X0303 4 2010-06-22 0 0001040593 CARRIZO OIL & GAS INC CRZO 0001257331 BOLING PAUL F 1000 LOUISIANA STREET SUITE 1500 HOUSTON TX 77002 0 1 0 0 CFO, VP, Secretary, Treasurer Common Stock 2010-06-22 4 S 0 1277 18.21 D 39462 D The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on March 31, 2010 and were used to satisfy the reporting person's federal income tax obligations with respect to the vesting of equity awards. The price reported in Column 4 is a weighted average price. The reporting person undertakes to provide to the issuer, any security holder of the issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this Form 4. These shares were sold in multiple transactions at prices ranging from $17.84 to $18.81, inclusive. /s/Paul F. Boling 2010-06-24