Frank Semple

Frank Semple

Director/Board Member at MPLX LP

Net worth: 25 M $ as of 2024-03-30

72 year
Industrial Services
Energy Minerals
Communications

Profile

Mr. Frank M. Semple is an Independent Director at Marathon Petroleum Corp. and a Chairman, President & Chief Executive Officer at MarkWest Hydrocarbon LLC. He is on the Board of Directors at Marathon Petroleum Corp., MPLX GP LLC and Choctaw Global LLC. Mr. Semple was previously employed as an Independent Director by Tortoise Acquisition Corp., a Chairman, President & Chief Executive Officer by MarkWest Energy GP LLC, a Chairman, President & Chief Executive Officer by MarkWest Energy Partners LP, a Chief Operating Officer by WilTel Communications LLC, a Senior Vice President & General Manager by Williams Natural Gas Co., a Vice President-Operations & Engineering by Northwest Pipeline LLC, a Chief Operating Officer by Williams Communications Group, Inc., a Division Manager by Williams Pipe Line Co. LLC, a Director-Product Movements & Division Manager by Williams Pipeline Partners LP, and a Chief Operating Officer by WilTel Communications Group LLC. He also served on the board at Andeavor Logistics LP, Tesoro Logistics GP LLC, MPLX LP, Equess Communications, Inc. and INCOMPAS. He received his undergraduate degree from United States Naval Academy.

Known holdings in public companies

CompanyDateNumber of sharesValuationValuation date
2024-03-31 538,055 ( 0.05% ) 22 M $ 2024-03-30
2024-03-31 11,303 ( 0.00% ) 2 M $ 2024-03-30

Frank Semple active positions

CompaniesPositionStart
MPLX LP Director/Board Member 2015-12-03
MARATHON PETROLEUM CORPORATION Director/Board Member 2021-04-27
Chief Executive Officer 2003-10-31
Director/Board Member -
Director/Board Member 2015-12-03
All active positions of Frank Semple

Former positions of Frank Semple

CompaniesPositionEnd
HYLIION HOLDINGS CORP. Director/Board Member 2019-12-31
Director/Board Member 2019-07-29
MARKWEST ENERGY PARTNERS LP Chief Executive Officer 2014-12-31
Chief Executive Officer 2014-12-31
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See the detail of Frank Semple's experience

Training of Frank Semple

United States Naval Academy Undergraduate Degree

Experiences
Positions held

Active

Inactive

Listed companies

Private companies

See the detail of Frank Semple's experience

Connections

100 +

1st degree connections

20

1st degree companies

Male

Female

Members of the board

Executives

See the personal network

Linked companies

Listed companies2
MARATHON PETROLEUM CORPORATION

Energy Minerals

MPLX LP

Industrial Services

Private companies17

Industrial Services

Industrial Services

Williams Communications Group, Inc.

Communications

Industrial Services

Williams Pipe Line Co. LLC

Industrial Services

Communications

Utilities

Industrial Services

Commercial Services

Energy Minerals

Equess Communications, Inc.

Communications

WilTel Communications Group LLC

Energy Minerals

Finance

Finance

Energy Minerals

Industrial Services

See company connections