David received a BBA in Petroleum Land Management from The University of Texas in 1983. He spent the next twenty years with Shell Oil Company in Houston, Traverse City and Bakersfield, and was responsible for a wide variety of land, contract and joint venture functions in Texas, Michigan, California, Alaska and the Rocky Mountains, including as Team Leader for the South Texas Wilcox. David’s final assignment at Shell was in the Mergers and Acquisitions group. After leaving Shell in late 2003, David assembled a team of landmen and an oil and gas attorney who consulted full-time for Carrizo Oil & Gas, Inc. in Houston and were responsible for acquiring more than 100,000 net acres of Carrizo’s leasehold in the Barnett and Eagle Ford Shales until 2017. In 2017, David accepted an employment position with Carrizo as Delaware Basin Land Manager. Upon Carrizo’s merger with Callon Petroleum Company in late 2019, David served as Director of Land for Callon until his departure in 2021.