Stephen I. Chazen


Stephen I. Chazen

Independent Chairman
Director since 2020

​Current Public Company Directorships:
Magnolia Oil & Gas Corporation
The Williams Companies, Inc.
​Former Public Company Directorships
(within the last 5 years):
​Ecolab Inc.​

Mr. Chazen is the President, Chief Executive Officer and Chairman of Magnolia Oil & Gas Corporation, a publicly traded exploration and production company. Prior to that, Mr. Chazen was President and Chief Executive Officer of Occidental from May 2011 to April 2016 and served as a member of the Board from May 2010 to May 2017. Mr. Chazen served as Occidental’s President and Chief Operating Officer from 2010 to 2011; President and Chief Financial Officer from 2007 to 2010; Chief Financial Officer and Senior Executive Vice President from 2004 to 2007; Chief Financial Officer and Executive Vice President-Corporate Development from 1999 to 2004; and Executive Vice President-Corporate Development from 1994 to 1999.​​

Before joining Occidental, Mr. Chazen was Managing Director in Corporate Finance and Mergers and Acquisitions at Merrill Lynch. He worked as Director of Project Evaluation and Reservoir Engineering at Columbia Gas Development Corporation from 1977 to 1982. He began his career with Northrop Corporation in 1973 as a Laboratory Manager at the Johnson Space Center. Mr. Chazen is a former Chairman of the Board of the American Petroleum Institute and the Catalina Island Conservancy. Mr. Chazen was appointed to the University of Houston System Board of Regents in 2018 and serves on the Advisory Board at Rice University’s Baker Institute for Public Policy. He is a director of the Houston Methodist Institute for Academic Medicine, the Williams Companies and the National Park Foundation. Mr. 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.​

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