What is the ticker symbol for Carrizo and where does its common stock trade?

• Carrizo Oil & Gas, Inc. trades on the NASDAQ under "CRZO."

How do I get on Carrizo’s electronic mailing list to receive press releases and other corporate material?

• Direct your requests to: investorinfo@crzo.net or by calling (713) 328-1095.

Who is Carrizo’s Transfer Agent? What does the transfer agent do?

• American Stock Transfer and Trust Company, LLC. (AST) is Carrizo’s transfer agent. AST can be contacted at: Shareholder Services: (toll free) (877) 777-0800 or on the web at www.amstock.com
• Transfer agents maintain stock registries for their client companies. They issue and cancel stock certificates, process and pay dividends, administer dividend reinvestment programs, resolve issues arising from lost or stolen certificates, and answer questions from shareholders about their accounts.

How do I change my address or name on my shareholder account?

• If you own your shares in your own name, contact our transfer agent (see above). If your stock is held in Street name, contact your stock brokerage firm.

Does Carrizo have a direct stock purchase plan?

• Carrizo currently does not have a stock purchase plan. Please contact your stock broker to purchase our shares.

Does Carrizo pay dividends on its common shares?

• Carrizo does not pay a dividend. Earnings are reinvested back into the company.

How may I obtain copies of Carrizo’s annual or quarterly reports?

• Electronic versions of Carrizo’s annual and quarterly reports are available on this web site under Investor Relations/Financial Reports.
• Paper copies of our latest annual report may be obtained by emailing investorinfo@crzo.net or by calling (713) 358-6493.

How may we access Carrizo’s SEC filings?

• Carrizo’s SEC filings can be found on the SEC web site, click here.

When does Carrizo’s fiscal year end?

• December 31

How many employees does Carrizo have?

• Carrizo currently has over 100 employees working in Houston, Fort Worth, and Pennsylvania.

Whom can I contact if I have additional questions or need more information about Carrizo?

• Investor questions should be directed to:
  Richard Hunter - Vice President of Investor Relations
  By e-mail at: richard.hunter@crzo.net
  Or by calling (713) 328-1031