Oil and gas
10 Occidental Petroleum executives
These ten current and former Occidental Petroleum executives have held chief executive, chief legal officer, general counsel, business unit president and senior vice president roles at Oxy and Occidental Oil and Gas. A reader can learn how these leaders build and run their teams in oil and gas companies.
Professionals to explore
01—10Barbara Bergersen
LinkedInExperience: Senior Vice President Technical Support · Oxy
Former Senior Vice President Technical Support at Oxy (2019–2021). At Oxy Bergersen also held Senior VP Permian EOR (2018–2019), President and General Manager Permian EOR (2015–2018) and Asset Development Manager Permian EOR (2015), and the profile lists Bergersen as retired from Oxy since 2021.
Brad Pollack
LinkedInExperience: Senior Vice President and General Counsel · Oxy
Senior Vice President and General Counsel at Oxy since August 2026, a Legal department role. At Oxy Pollack was also Vice President and Deputy General Counsel, Operations and Commercial Development (2023–2026), Associate General Counsel and VP Legal-Low Carbon Ventures (2021–2023) and Assistant General Counsel, M&A and Strategic Transactions (2019–2021).
Brian Keith Owens
LinkedInExperience: President & GM Rockies Business Unit · Oxy
Former President & GM Rockies Business Unit at Oxy (2020–2026) and Senior Vice President Rockies Business Unit at Oxy (2019–2020). Owens was also Vice President of Asset Development (2015–2016) and Vice President of Operations (2014–2015) at California Resources Corporation, and the profile lists Owens as retired since 2026.
Ken Dillon
LinkedInExperience: SVP Operations and Major Projects · Occidental Oil and Gas
SVP Operations and Major Projects at Occidental Oil and Gas since July 2014. The profile lists OXY operated assets and direct reports including general managers in Abu Dhabi, Oman and Qatar. Dillon was also President - International Oil and Gas Operations and Senior Vice President Major Projects at Occidental Oil and Gas (2012–2014).
Marc McCoy
LinkedInExperience: Senior Vice President Domestic Crude Oil Marketing & Operations · Oxy
Senior Vice President Domestic Crude Oil Marketing & Operations at Oxy since August 2024, an Operations department role. At Oxy McCoy was also Vice President Crude Oil Marketing (2018–2024), Director Crude Oil Marketing (2011–2018), Director Trade Control (2008–2011) and Senior Natural Gas Trader (2007–2008).
Michael Avery
LinkedInExperience: President - Unconventional Oil & Gas · Oxy
President - Unconventional Oil & Gas at Oxy since August 2025, an executive-level general management role based in Houston. At Oxy Avery was also President & General Manager Delaware Basin (2025–2026) and President & General Manager, Permian Resources, Texas Delaware Basin (2018–2020), and held development and inventory growth manager roles in New Mexico.
Oscar Brown
LinkedInExperience: Senior Vice President Strategy, Business Development & Supply Chain · Oxy
Former Senior Vice President Strategy, Business Development & Supply Chain at Oxy (2016–2020), where the profile says Brown reported directly to the CEO with a strategic portfolio across Oxy's businesses, including OxyChem, Permian Resources, EOR, Rockies, Gulf of Mexico, Midstream and International. Brown has been Chief Executive Officer of Western Midstream since 2024.
Stacy Palmatary
LinkedInExperience: Senior Vice President Supply Chain · Oxy
Former Senior Vice President Supply Chain at Oxy (2007–2015) and Vice President Supply Chain at Oxy (2000–2007). Palmatary has been a board member at Levare since 2023 and was a board member at Borets International (2018–2022); the profile mentions leadership roles in integrating acquisitions.
Sylvia Kerrigan
LinkedInExperience: Senior Vice-President and Chief Legal Officer · Oxy
Senior Vice-President and Chief Legal Officer at Oxy since October 2022; the profile describes the role as Senior Vice-President and Chief Legal Officer at Occidental Petroleum. Kerrigan has also been a board member of Diversified Energy Company since 2021 and of HORNBECK OFFSHORE® since 2022, and was Executive Director at the KBH Energy Center for Business, Law & Policy (2017–2022).
Vicki Hollub
LinkedInExperience: President and Chief Executive Officer · Oxy
President and Chief Executive Officer at Oxy, a C-level general management role listed from May 2016 with no end date. The profile also lists President and General Manager - OXY Permian CO2 at Oxy from 2011 with no end date, and Operations Manager at Oxy from 2009 to 2011.
Choose the right perspective
Match the executive's function or business unit to your question, since a corporate officer and the president of one operating unit see different parts of the company's decisions. Check each role's dates so you know whether the person's Occidental experience is current or from an earlier period.
Questions to take into the conversation
- 01How does Occidental decide which basins and projects receive capital each year?
- 02What does a supplier or service partner need to show to win work with an Occidental business unit?
- 03How do Occidental's legal and commercial teams approach major transactions and contracts?
Reaching Occidental Petroleum executives
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About this directory
This is a professional research starting point based on business profile data retrieved on . Titles and companies reflect that source snapshot and may describe past or present roles. Check the linked profiles for current details. Inclusion does not imply Instant Expert membership or availability.
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