Occidental Petroleum Corporation President and CEO Stephen I. Chazen has been elected Chairman of the American Petroleum Institute’s (API) Board of Directors effective January 1, 2014, for a one-year term. Chazen succeeds Marathon Oil Corporation’s Executive Chairman, Clarence P. Cazalot, Jr.
“Steve Chazen’s experience and knowledge will reinforce API’s growing outreach to the public and policymakers,” said API President and CEO Jack Gerard.
Chazen, who has more than 40 years of experience in the oil and natural gas industry, joined Occidental Petroleum in 1994 as Executive Vice President – Corporate Development. He was named Chief Financial Officer in 1999 and elected President and Chief Financial Officer in 2007. He was named President and Chief Operating Officer and elected to the company’s Board of Directors in 2010 and became President and CEO the following year. Prior to joining Occidental, Chazen was a managing director in the investment banking group of Merrill Lynch & Co.
Chazen holds a Ph.D. in geology from Michigan State University, a master’s degree in finance from the University of Houston, and a bachelor’s degree in geology from Rutgers College. In addition to Occidental Petroleum Corporation and the American Petroleum Institute, he serves on the Boards of Directors for Ecolab Incorporated, the Aquarium of the Pacific and the Catalina Island Conservancy.
Gerard also thanked outgoing Executive Chairman Clarence Cazalot, who is retiring from Marathon Oil Corp., for his leadership over the past year and his long service on API’s Board of Directors. “Clarence’s influence has been felt throughout API and our entire industry,” said Gerard. “We wish him a long and happy retirement.”
API is a national trade association that represents the oil and natural gas industry. Its more than 550 members include large integrated companies, exploration and production, refining, marketing, pipeline, and marine businesses, and service and supply firms.

