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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1040593	Carrizo Oil & Gas Inc	CRZO	Crude Petroleum & Natural Gas (1311)	760415919

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1044584	Iv P S Johnson	1000 Louisiana Street Suite 1500 Houston TX 77002	President And Ceo	Yes	Yes	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2011-11-18	45,000	$4.01	655,265	No	4	M	Direct
Common Stock	Acquisiton	2011-11-18	21,350	$25.66	633,915	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	M	Direct
No	4	S	Direct

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Stock Option (right to buy)	Acquisiton	2011-11-18	45,000	$0.00	45,000	$4.01

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0		2011-12-06	No	4	M	Direct

Footnotes

Broker-assisted exercise and sale of an option granted December 6, 2001 that would expire on December 6, 2011.
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 $25.62 to $25.73, inclusive.
The options became exercisable in annual increments of one third of the total number of shares of common stock subject thereto, beginning on the first anniversary of the date of grant (December 6, 2001).