![Maryann Mannen](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Maryann Mannen
Net worth: 26 M $ as of 31/12/2025
Profile
Presently, Maryann T. Mannen is Chairman for The Awty International School Houston and Chief Financial Officer & Executive Vice President at Marathon Petroleum Corp. She is also on the board of Owens Corning, MPLX LP and MPLX GP LLC and Vice Chairman & Secretary at The Cynthia Woods Mitchell Pavilion. In the past Ms. Mannen held the position of Chief Financial Officer & Executive VP of TechnipFMC Plc and Chief Financial Officer & Executive Vice President at FMC Technologies, Inc. (a subsidiary of TechnipFMC Plc), Controller-FoodTech Group at FMC Corp., Finance Manager at Sheller Globe Corp. and Director-Investor Relations for FoodTech International, Inc. Maryann T. Mannen received an MBA and an undergraduate degree from Rider University.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 01/08/2025 | 1,00,547 ( 0.03% ) | 16 M $ | 31/12/2025 | |
MPLX LP 0.01% | 03/03/2025 | 1,25,862 ( 0.01% ) | 7 M $ | 31/12/2025 |
OWENS CORNING 0.03% | 07/11/2025 | 26,688 ( 0.03% ) | 3 M $ | 31/12/2025 |
Maryann Mannen active positions
| Companies | Position | Start |
|---|---|---|
| OWENS CORNING | Director/Board Member | 06/08/2014 |
| MARATHON PETROLEUM CORPORATION | Chief Executive Officer | 01/08/2024 |
| MPLX LP | Chief Executive Officer | 01/08/2024 |
The Cynthia Woods Mitchell Pavilion
 The Cynthia Woods Mitchell Pavilion Movies/EntertainmentConsumer Services Operates as a amphitheatre | Corporate Secretary | - |
MPLX GP LLC
 MPLX GP LLC Owns, operates, develops and acquires pipelines for petroleum and energy industries | Chief Executive Officer | 01/08/2024 |
The Business Council
 The Business Council Miscellaneous Commercial ServicesCommercial Services Operates as an organization of business leaders | Corporate Officer/Principal | - |
Former positions of Maryann Mannen
| Companies | Position | End |
|---|---|---|
| TECHNIPFMC PLC | Director of Finance/CFO | 25/01/2021 |
| FMC TECHNOLOGIES, INC. | Director of Finance/CFO | 01/01/2017 |
The Awty International School Houston
 The Awty International School Houston General GovernmentGovernment Provides educational services | Chairman | - |
| ░░░░░░░ ░░░░░ ░░░░░ | ░░░░░░░░ ░░ ░░░░░░░░░░░ | - |
| ░░░ ░░░░░░░░░░░ | ░░░░░░░░░ ░░░░░░░░░░░░░░░░░ | - |
Training of Maryann Mannen
Experiences
Positions held
Connections
1st degree connections
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 13 |
|---|---|
FMC Corp.
 FMC Corp. Operates as an agricultural sciences company which produces food, feed, fiber and fuel | |
FMC Technologies, Inc.
 FMC Technologies, Inc. Miscellaneous Commercial ServicesCommercial Services Provides energy management systems services | Commercial Services |
Sheller Globe Corp.
 Sheller Globe Corp. Auto Parts: OEMProducer Manufacturing Manufactures auto parts | Producer Manufacturing |
Rider University
 Rider University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Owens Corning
 Owens Corning Containers/PackagingProcess Industries Operates as a global producer of residential and commercial building materials, glass-fiber reinforcements and engineered materials for composite systems | Process Industries |
The Business Council
The Business Council Miscellaneous Commercial ServicesCommercial Services Operates as an organization of business leaders | Commercial Services |
The Cynthia Woods Mitchell Pavilion
The Cynthia Woods Mitchell Pavilion Movies/EntertainmentConsumer Services Operates as a amphitheatre | Consumer Services |
FoodTech International, Inc.
 FoodTech International, Inc. Food: Specialty/CandyConsumer Non-Durables Produces frozen meat substitute products | Consumer Non-Durables |
The Awty International School Houston
The Awty International School Houston General GovernmentGovernment Provides educational services | Government |
Marathon Petroleum Corp.
 Marathon Petroleum Corp. Operates as petroleum product refiners, marketers and transporters | |
MPLX LP
 MPLX LP Owns, operates, develops and acquires pipelines and other midstream assets | |
MPLX GP LLC
MPLX GP LLC Owns, operates, develops and acquires pipelines for petroleum and energy industries | |
TechnipFMC plc
 TechnipFMC plc Designs and manufactures subsea & surface technology equipment used for oil and gas industry |
- Stock Market
- Insiders
- Maryann Mannen
