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Organizational Chart of MPLX
MPLX Org Chart
www.mplx.com
has
23 executives and 1 subsidiary
- and belongs to
Marathon Petroleum
+1 419 421 2414
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CEO & Chair
Maryann Mannen
CEO & Chairman @ Marathon Petroleum
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Lead Director
John Surma
Lead Director @ Marathon Petroleum
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Director
Christine Breves
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Director
Christopher Helms
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Director
Maria Khoury
CFO @ Marathon Petroleum
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Director
Garry Peiffer
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Director
Frank Semple
Director @ Marathon Petroleum
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Director
Michael Stice
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Director
Ray Walker
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CFO & Director
Kristopher Hagedorn
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Control
R...
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Finance & IR
K...
Finance & Treasurer @ Marathon Petroleum
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COO
Gregory Floerke
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Logistics & Storage
S...
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Operations
H...
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Legal & Secretary
M...
Legal & Secretary @ Marathon Petroleum
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Senior Vice President
M...
Refining @ Marathon Petroleum
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Senior Vice President
R...
Commercial @ Marathon Petroleum
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Senior Vice President
B...
Business Transformation @ Marathon Petroleum
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Strategy BusDev
D...
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Updated Mar 8, 2026
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Oil & Gas (1353 companies including MPLX)
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MPLX has 23 executives and 1 subsidiary
Marathon Petroleum
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MPLX
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