Gary r. heminger, chairman and chief executive officer announces plan to retire from marathon petroleum in 2020 after 45 years

Gary r. heminger, chairman and chief executive officer of marathon petroleum corporation announced his plan to retire from mpc, where he has served as president and ceo since the company's spin-off from marathon oil in june 2011, and as chairman and ceo since 2016. he has also served as chairman and ceo of mplx gp llc since 2012. the board has appointed a committee, led by edward g. galante, that will consider internal and external candidates to succeed mr. heminger.
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