Subsequent Events

6 Months Ended

Jun. 30, 2011

12.

SUBSEQUENT EVENTS

On August 5, 2011, the Company, its two recently formed wholly owned subsidiaries, Carrizo (Eagle Ford) LLC and Carrizo (Niobrara) LLC, and Wells Fargo Bank, National Association, as Trustee, entered into the Eighth Supplemental Indenture and Ninth Supplemental Indenture, pursuant to which such wholly owned subsidiaries have issued full, unconditional and joint and several guarantees of the Senior Notes and the Convertible Senior Notes, respectively, and may guarantee future issuances of debt securities. These subsidiaries also guarantee borrowings under the Revolving Credit Facility.

- Definition

Tabular disclosure of significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, losses resulting from fire or flood, losses on receivables, significant realized and unrealized gains and losses that result from changes in quoted market prices of securities, declines in market prices of inventory, changes in authorized or issued debt (SEC), significant foreign exchange rate changes, substantial loans to insiders or affiliates, significant long-term investments, and substantial dividends not in the ordinary course of business.

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