Oil and gas
10 Marathon Petroleum operations leaders
These ten people hold or have held operations leadership roles at Marathon Petroleum as a senior vice president, a vice president and operations directors across refining, pipeline, transport and renewables operations. A reader can learn how Marathon Petroleum's operations leaders build and run their teams.
Professionals to explore
01—10Brandon Grimm
LinkedInExperience: Director of Operations · Marathon Petroleum Corporation
Director of Operations at Marathon Petroleum Corporation since July 2025, a director-level Operations role the profile places in Mandan, North Dakota. Former Technical Services Director (2023–2025), Operations Area Team Manager (2019–2023) and Process Engineering Manager (2018–2019) at Marathon Petroleum Corporation.
Brandon McCarthy
LinkedInExperience: Refining Operations Director · Marathon Petroleum Corporation
Refining Operations Director at Marathon Petroleum Corporation since September 2023; the profile says the role oversees the daily operations of the refinery, ensuring safety, efficiency and quality. Also Refining Environmental, Safety & Security Director there since May 2026, and former Product Control Manager (2022–2023) and Operations Supervisor (2019–2022) at Marathon Petroleum Corporation.
Daniel McGraw
LinkedInExperience: Operations Director · Marathon Petroleum Corporation
Operations Director at Marathon Petroleum Corporation since March 2024, a director-level Operations role the profile places in Catlettsburg, Kentucky. Former Technical Services Manager in two listed roles (2020–2023 and 2023–2024) and Technical Services Supervisor (2018–2020) at Marathon Petroleum Corporation.
Katie Meschede
LinkedInExperience: Director of Operations - West (Transport & Rail) · Marathon Petroleum Corporation
Director of Operations - West (Transport & Rail) at Marathon Petroleum Corporation since March 2022, a director-level Operations role the profile places in San Antonio, Texas. Former Region Manager Regional Operations Manager (2019–2022) and Performance Operational Excellence Project Manager (2017–2018) at Marathon Petroleum Corporation.
Leatha Hallmark, MBA
LinkedInExperience: Operations Director · Marathon Petroleum Corporation
Former Operations Director at Marathon Petroleum Corporation (2023–2025), a director-level Operations role the profile places in Los Angeles, California. Refining Vice President-Detroit Refinery at Marathon Petroleum Corporation since August 2025, and former Operations Manager (2019–2023) and Area Team Lead (2014–2019) there.
Lisa Bielamowicz
LinkedInExperience: Senior Refinery Operations Director · Marathon Petroleum Corporation
Senior Refinery Operations Director at Marathon Petroleum Corporation since July 2026, a corporate refining role the profile describes as supporting all things operations related. Former Refinery Operations Director - NextGen Ops (2025–2026), Refinery Operations Director - El Paso Refinery (2024–2025) and Regional Planning Director - West Region (2022–2024) at Marathon Petroleum Corporation.
Ray Ballard
LinkedInExperience: Director of Operations · Marathon Petroleum Corporation
Director of Operations at Marathon Petroleum Corporation since December 2025; the profile describes leading Marathon's Martinez Renewables Facility in providing safe, compliant and reliable operations for renewable fuels in California. Former Director of Technical Services (2023–2025) and Operations Area Team Manager (2019–2021 and 2021–2023) at Marathon Petroleum Corporation.
Steve Hawkins, PE
LinkedInExperience: Vice President Global Marine Operations & L&S Strategy · Marathon Petroleum Corporation
Vice President Global Marine Operations & L&S Strategy at Marathon Petroleum Corporation since August 2024; the profile says the role leads Marathon's Global Marine Operations Organization and strategic planning for the Logistics & Storage Division of MPLX. Former Regional Pipeline Operations Manager (2022–2023) and Operations Superintendent (2018–2020) at Marathon Petroleum Corporation.
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 the profile places in Findlay, Ohio. Former General Manager at Marathon Petroleum Corporation in three listed roles (2009–2010, 2010–2014 and 2014–2018). The profile lists a Retired Refining Executive role since 2021.
Victoria Ochs
LinkedInExperience: Operations Director - Marathon Pipeline LLC · Marathon Petroleum Corporation
Operations Director - Marathon Pipeline LLC at Marathon Petroleum Corporation since May 2023; the profile describes the role as Martinsville Region Operations Director for Marathon Pipeline. Former Area Team Leader (2018–2023), Laboratory Supervisor (2016–2018) and Operations Foreman (2013–2016) at Marathon Petroleum Corporation.
Choose the right perspective
Match the person's operating area to your question, since a refinery, a pipeline region, a transport network and a corporate refining role each face different day-to-day decisions. Check whether the relevant role is current or former before asking about recent practice.
Questions to take into the conversation
- 01How are operating priorities set and reviewed between a site operations team and corporate refining leadership?
- 02When an operating change is introduced at one site, how is it rolled out to other sites?
- 03What does a contractor or technology vendor need to show to be trusted inside a Marathon Petroleum operation?
Reaching Marathon Petroleum operations leaders
How can I contact one of these Marathon Petroleum operations leaders?
Pick one of the 10 people on this page and choose "Book a paid call", or describe your project to find others. You offer a fee for a 15-minute call or a written answer, Instant Expert finds the person's work email and sends the invitation, and they decide whether to accept. The list covers 1 company: Marathon Petroleum Corporation, based on profile data retrieved on October 5, 2026. Being listed here doesn't mean someone has agreed to take calls.
How much does it cost to reach Marathon Petroleum operations leaders?
You choose the offer, starting at $5 per person. It includes Instant Expert's 20% fee, so an offer that pays the person $100 costs you $125. You're charged only when the person books the call or sends the answer.
What if they don't reply?
You pay nothing. Instant Expert sends follow-up reminders, and if the person hasn't booked or answered within 7 days, the request expires and any hold on your card is released. You can invite several of the 10 people on this list at once and cap your total spend, so you pay only for the ones who accept.
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.
Request a correction or removal