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Marathon Petroleum Names Plumby a Corporate Officer

37-year company veteran joins senior management team
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Photograph by Lenny Gilmore

FINDLAY, Ohio -- Glenn Plumby, senior vice president and COO of Speedway LLC, a wholly owned subsidiary of Marathon Petroleum Corp. (MPC), has been appointed an MPC officer. He will retain his current title.

glenn plumby

"Among Glenn's many notable accomplishments, he has played a key leadership role in Speedway's significant growth in recent years," said MPC Chairman and CEO Gary Heminger. "Glenn has gained enormous expertise in our retail business during more than 37 years of dedicated service, making him a welcome addition to our senior management team."

Plumby joined MPC in 1981 and held various accounting and marketing positions until transferring to Emro Marketing Co., the predecessor of Speedway, in 1994. He was appointed vice president of light product marketing in 2000 and was vice president of marketing from 2003 to 2009. From 2010 through 2017, Plumby held operations posts as both a vice president and senior vice president. MPC appointed him senior vice president and COO for Speedway in 2018.

Plumby is a member of the board of directors of NACS and is a member of the organization's research council.

Findlay, Ohio-based MPC is an integrated downstream energy company that operates 16 refineries and a marketing system that includes about 7,800 branded U.S. locations, including about 5,600 Marathon retail outlets. Its Enon, Ohio-based Speedway subsidiary owns and operates about 4,000 convenience stores nationwide.

  • Speedway is No. 3 in CSP's 2018 Top 202 ranking of c-store chains by number of retail outlets.

MPC also owns the general partner and majority limited partner interests in two midstream companies, MPLX LP and Andeavor Logistics LP, which own and operate gathering, processing and fractionation assets, as well as crude oil and light product transportation and logistics infrastructure.

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