John C. Mollenkopf

SVP, MARKWEST ENERGY PARTNERS L P.

Companies

American GreetingsBoard member Mar 14, 2019 to now¹
MPLXChief operating officer Dec 7, 2015 to Dec 22, 2015²

Sources

The numbers on this page point here. Each one links to the record it came from.

1
SEC EDGARAmerican Greetings, Board member
2
SEC EDGARMPLX, Chief operating officer