Carrizo Oil & Gas Inc.

S.P. Johnson IV has served as our President and Chief Executive Officer and a director since December 1993. Prior to that, he worked for Shell Oil Company for 15 years. His managerial positions included Operations Superintendent, Manager of Planning and Finance and Manager of Development Engineering. Mr. Johnson is also a director of Basic Energy Services, Inc. (a well servicing contractor). Mr. Johnson is a Registered Petroleum Engineer and has a B.S. in Mechanical Engineering from the University of Colorado.

Paul F. Boling became Carrizo Oil & Gas, Inc.'s Chief Financial Officer, Vice President, Secretary and Treasurer in August 2003. From 2001 to 2003, Mr. Boling was the Global Controller for Resolution Performance Products, LLC, an international epoxy resins manufacturer. From 1990 to 2001, Mr. Boling served in a number of financial and managerial positions with Cabot Oil & Gas Corporation, serving most recently as Vice President, Finance. Mr. Boling is a CPA and holds a B.B.A. from Baylor University.

Gregory E. Evans has served as Vice President of Exploration since March 2005. Prior to joining us, Mr. Evans was Vice President North America Onshore Exploration for Ocean Energy from 2001 to 2003. Prior to that time, he spent 19 years at Burlington Resources where he served as Chief Geophysicist North America during 1999 to 2000, Gulf of Mexico Deep Water Exploration Manager during 1998 to 1999 and Geoscience Manager for the Western Gulf of Mexico Shelf during 1996 to 1998. Between 1982 to 1996, Mr. Evans held various other technical and managerial positions with Burlington Resources, including Division Exploration Manager of both the Rocky Mountain Region as well as the Gulf Coast area. Mr. Evans received a B. S. in Geophysical Engineering from the Colorado School of Mines receiving the Cecil H. Green award for outstanding geophysical student.

J. Bradley Fisher has served as Vice President and Chief Operating Officer since March 2005. Prior to that time, he served as Vice President of Operations since July 2000 and General Manager of Operations from April 1998 to June 2000. Prior to joining us, Mr. Fisher was the Vice President of Engineering and Operations for Tri-Union Development Corp. from August 1997 to April 1998. He spent the prior 14 years with Cody Energy and its predecessor Ultramar Oil & Gas Limited where he held various managerial and technical positions, last serving as Senior Vice President of Engineering and Operations. Mr. Fisher holds a B.S. degree in Petroleum Engineering from Texas A&M University.

F. Gardner Parker, has been a director of Carrizo Oil & Gas, Inc. since 2000. He has been Managing Outside Trust Manager with Camden Property Trust since 1998. He also serves on the boards of Crown Resources Corporation, Sharps Compliance Corp. (a waste management services provider) and Blue Dolphin Energy Company (a pipeline operations and oil and gas exploration and production holding company). In addition, he serves on the board of directors of the following private companies: Gillman Automobile Dealerships, Net Near U Communications, MCS Technologies, Camp Longhorn, Inc., nii communications, inc., Sherwood Healthcare Inc., and Arena Power. Mr. Parker also worked with Ernst & Ernst (now Ernst & Young LLP) for 14 years, seven of which he served as a partner. He is a graduate of The University of Texas.

Frank A. Wojtek, has been a director of Carrizo Oil & Gas, Inc. since 1993. He has been Vice President, Secretary and Director of A-Texian Compressor, Inc. (a natural gas compression services company) since July 2004. Mr. Wojtek served as our Chief Financial Officer, Vice President, Secretary and Treasurer from 1993 until August 2003. From 1992 to 1997, Mr. Wojtek was the Assistant to the Chairman of the Board of Reading & Bates Corporation (an offshore drilling company). Mr. Wojtek has also held the positions of Vice President and Secretary/Treasurer of Loyd & Associates, Inc., a private financial consulting firm, since 1989. Mr. Wojtek held the positions of Vice President and Chief Financial Officer of Griffin-Alexander Drilling Company from 1984 to 1987, Treasurer of Chiles-Alexander International Inc. from 1987 to 1989, and Vice President and Chief Financial Officer of India Offshore Inc. from 1989 to 1992, all of which were companies in the offshore drilling industry. Mr. Wojtek holds a B.B.A. in Accounting with Honors from The University of Texas.

Mr. Paul B. Loyd serves as Chairman and Chief Executive Officer of R&B Falcon Corporation, the world's largest offshore drilling company since December 1997. R&B Falcon Corporation was the result of the 1997 merger of Reading & Bates Corporation and Falcon Drilling, Inc. and the subsequent acquisition of Cliffs Drilling Company in late 1998. Mr. Loyd was the Chairman of the Board of Reading & Bates from April 1991 until December 1997. Mr. Loyd was Assistant to the president of Atwood Oceanics International, President of Griffin-Alexander Company from 1984 to 1987, Chief Executive Officer of Chiles-Alexander International, Inc. from 1987 to 1989, all of which are companies in the offshore drilling industry. He has served as consultant to the Government of Saudi Arabia, and was a founder and principal of Loyd & Associates, Inc., an investment company focusing on the energy industry. Mr. Loyd is a member of the Board of Directors of Carrizo Oil & Gas, Inc., an oil and gas exploration and production company. He was appointed a director of the Company in 1994.

Mr. Ramsey founded and was the CEO of Allied Waste Industries ($5.5B, NYSE) and the co-founder and CFO of ($3.5B, NYSE) Browning Ferris Industries (BFI). Growth companies Mr. Ramsey has been previously associated with have raised over $12 Billion in the national and international capital markets. During his career, Mr. Ramsey played important roles in taking three companies from start-up to multi-billion dollar public corporations. In addition to Allied and BFI, he was a lead investor and Chairman of the Board of Criterion Group, Inc., a publicly owned, registered investment advisor that grew to more than $12 billion under management before its acquisition by Transamerica. Mr. Ramsey was co-founder and Vice Chairman of The Houstonian, a 23-acre luxury hotel, club, and spa complex with more than 2700 members, and he was a partner in Houston Partners, a venture capital firm. In addition to chairing the Boards of MedServe and VeriCenter, Inc., Mr. Ramsey also serves on the Boards of publicly held Carrizo Oil & Gas, Inc. (CRZO), WCA Waste Corporation (WCAA), and the Finance and Investment Committees of the Board of Trustees of Texas Christian University. Mr. Ramsey is a member of the Environmental Industries Association's Management Hall of Fame. He graduated cum laude from Texas Christian University with a BS in Commerce.

Thomas L. Carter, Jr., became a director of Carrizo Oil & Gas, Inc. in March 2005. He has been President and Chief Executive Officer of Black Stone Minerals Company, L.P., a privately-owned Delaware limited partnership located in Houston, Texas, since its formation in 1998. Mr. Carter has also served as Managing General Partner of Black Stone Energy Company from 1980 to the present. Prior to the formation of Black Stone, Mr. Carter served as Managing General Partner of W.T. Carter & Bros. from 1987 through 1992. From 1975 to 1979, Mr. Carter was with Texas Commerce Bank in Houston, Texas. Mr. Carter holds an M.B.A. and B.B.A. from the University of Texas at Austin.