UPDATE 2-Marathon Petroleum names Mannen president, Quaid finance chief

(Changes headline, adds details)

By Laura Sanicola

Dec 21 (Reuters) - Refiner Marathon Petroleum on Thursday named Maryann Mannen as its new president and John Quaid as its new chief financial officer, effective Jan. 1.

Michael Hennigan will remain the company's chief executive officer. He will also continue as president and chief executive of the general partner of MPLX, a company formed by Marathon which owns and operates midstream energy infrastructure and logistics assets as well as fuel distribution services.

Mannen, Marathon's first woman president, joined the company in 2021 as chief financial officer. She previously worked at TechnipFMC, a technology provider for the energy industry.

Quaid was previously the CFO of MPLX. He joined Marathon in 2014 from U.S. Steel.

Hennigan has been at the helm of Findlay, Ohio-based Marathon for more than three years, taking over from former Chief Executive Gary Hemminger, who spun off the independent refiner from Marathon Oil and built it into the nation's largest refiner through a series of acquisitions.

In the third quarter Marathon reported an adjusted net income of $8.14 per share, cruising past analysts' average estimate of $7.75 per share, according to LSEG data. (Reporting by Tanay Dhumal in Bengaluru and Laura Sanicola in Washington; Editing by Shounak Dasgupta, Krishna Chandra Eluri and Deepa Babington)