Oil and gas
10 Marathon Petroleum executives
These ten current and former Marathon Petroleum executives, including two former CFOs, have held chief executive, chief officer, executive vice president and senior vice president roles at the company. A reader can learn how these leaders build and run their teams in oil and gas companies.
Professionals to explore
01—10Brian Partee
LinkedInExperience: Chief Business Transformation Officer · Marathon Petroleum Corporation
Chief Business Transformation Officer at Marathon Petroleum Corporation since April 2025, a general management role. At the company Partee was also Chief Global Optimization Officer (2024–2025), Senior Vice President Global Clean Products Value Chain (2020–2024) and Senior Vice President Marketing (2018–2020).
Dave Heppner
LinkedInExperience: Chief Strategy Officer and Senior Vice President Business Development · Marathon Petroleum Corporation
Chief Strategy Officer and Senior Vice President Business Development at Marathon Petroleum Corporation since March 2024. The profile also lists Senior Vice President Strategy Business Development from 2021 and Vice President - Commercial & Business Development from 2018 at the company, and Director-Wholesale Marketing (2010–2021).
Ehren Powell
LinkedInExperience: Chief Digital Officer · Marathon Petroleum Corporation
Chief Digital Officer at Marathon Petroleum Corporation since July 2020, based in San Antonio. Powell was Vice President, CIO at GE HealthCare (2018–2020), SVP & CIO, Services at GE (2017–2018) and CIO, Power Generation Products & Services at GE Power (2014–2017).
Jim Wilkins
LinkedInExperience: Senior Vice President, Environmental, Safety, Security, and Product Quality · Marathon Petroleum Corporation
Senior Vice President, Environmental, Safety, Security, and Product Quality at Marathon Petroleum Corporation since October 2018. At the company Wilkins was also Director corporate Environmental, Safety, Process Safety, and Product Quality (2016–2018), Corporate Refining HES Director (2006–2016) and Corporate Refining HES Manager (1999–2006).
John Quaid
LinkedInExperience: Executive Vice President and Chief Financial Officer · Marathon Petroleum Corporation
Former Executive Vice President and Chief Financial Officer of Marathon Petroleum Corporation (2024–2026), and Executive Vice President there since January 2026. Quaid was also EVP and Chief Financial Officer at MPLX GP LLC (2021–2023) and VP and Controller at Marathon Petroleum Corporation (2014–2021).
John Swearingen
LinkedInExperience: Senior Vice President - Transportation & Logistics · Marathon Petroleum Corporation
Former Senior Vice President - Transportation & Logistics at Marathon Petroleum Corporation (2015–2020), a role the profile also describes as Chief Operating Officer, MPLX LP. Swearingen was Executive Vice President - Logistics & Storage at Marathon Petroleum/MPLX (2017–2020) and Vice President - Health, Environment, Safety & Security at Marathon Petroleum Corporation (2011–2015).
Julian Stoll
LinkedInExperience: SVP, Value Chain Optimization · Marathon Petroleum Corporation
SVP, Value Chain Optimization at Marathon Petroleum Corporation since March 2025. Stoll was Executive Vice President and Chief Operating Officer (2022–2025) and Chief Operating Officer (2020–2022) at VARO Energy, and Vice President - Refining Operations at Phillips 66 (2019–2020).
Maryann Mannen
LinkedInExperience: President and Chief Executive Officer · Marathon Petroleum Corporation
President and Chief Executive Officer of Marathon Petroleum Corporation since August 2024 and Chairman since January 2026; the profile headline reads Chairman, President and Chief Executive Officer, MPC and MPLX. Mannen was also President (2024) and Executive Vice President and CFO (2021–2024) at Marathon Petroleum Corporation.
Rick Hessling
LinkedInExperience: Senior Vice President, Global Feedstocks Value Chain · Marathon Petroleum Corporation
Senior Vice President, Global Feedstocks Value Chain at Marathon Petroleum Corporation since 2020. At the company Hessling was also Senior Vice President, Crude Oil Supply & Logistics (2018–2020), Crude Oil & Natural Gas Supply & Trading Manager (2013–2020) and Crude Logistics & Analysis Manager (2011–2013).
Tracy Case
LinkedInExperience: Senior Vice President Western Refining Operations · Marathon Petroleum Corporation
Former Senior Vice President Western Refining Operations at Marathon Petroleum Corporation (2018–2021), a senior operations role based in Findlay, Ohio. Case also held three General Manager roles at Marathon Petroleum Corporation between 2009 and 2018, and the profile lists Case as a retired refining executive since 2021.
Choose the right perspective
Match the executive's function to your question, since a corporate officer, a value chain leader and a refining or logistics leader see different parts of the company's decisions. Check each role's dates so you know whether the person's Marathon Petroleum experience is current or from an earlier period.
Questions to take into the conversation
- 01How does Marathon Petroleum decide which refining and logistics investments to fund?
- 02What does a supplier or technology partner need to show to win support from Marathon Petroleum's leadership?
- 03How do Marathon Petroleum's value chain teams coordinate feedstocks, refining and product sales?
Reaching Marathon 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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