S.P. ‘CHIP’ JOHNSON IV has served as President, Chief Executive Officer
and a Director of Carrizo Oil & Gas, Inc., since December 1993. Prior to
that, he worked 15 years for Shell Oil Company. His managerial positions
included Operations Superintendent, Manager of Planning and Finance and
Manager of Development Engineering. Mr. Johnson is a Registered
Petroleum Engineer and has a BS in Mechanical Engineering from the
University of Colorado. Mr. Johnson is a Director of the recently formed
Pinnacle Gas Resources, Inc.