Maryann T. Mannen

Board

Since August 1, 2024

Age

62 years

Tenure

Joined in January 2021 as Executive Vice President and Chief Financial Officer, was promoted to President on January 1, 2024, and became President and Chief Executive Officer on August 1, 2024.

Also at Marathon Petroleum

MJH

Michael J. Hennigan

Executive Chairman of the Board

BKP

Brian K. Partee

Chief Global Optimization Officer

DRH

David R. Heppner

SVP, Strategy and Business Development

About

Maryann T. Mannen, currently 62 years old as of February 1, 2025 , has built a distinguished career in the energy sector over several decades. Born in 1962, her journey in the industry has been marked by her deep expertise in financial management and strategic leadership, which has contributed significantly to the companies she has served.

Her professional path took a significant turn when she joined MPC in January 2021 as Executive Vice President and Chief Financial Officer. She was then promoted to President on January 1, 2024, before assuming the role of President and Chief Executive Officer on August 1, 2024. This progression underscores her capability to drive strategic initiatives and execute transformational priorities within one of the nation’s largest refining businesses.

Beyond her roles at MPC, she has contributed to the broader energy and business communities through board memberships and executive committee positions, including with Owens Corning and several industry associations. Her career reflects a commitment to operational excellence and financial acumen, making her a respected leader in both her company and the wider energy sector.

$MPC Performance Under Maryann T. Mannen

Past Roles

Organization	Role	Date Range	Details
Marathon Petroleum Corporation (MPC)	President	January 1, 2024 - August 1, 2024	Position ended upon her appointment as CEO
Marathon Petroleum Corporation (MPC)	Executive Vice President and Chief Financial Officer (CFO)	January 25, 2021 - December 2023	Served prior to her presidency and CEO role
TechnipFMC	Executive Vice President and Chief Financial Officer	2017 - 2021	Held financial leadership role at TechnipFMC
FMC Technologies, Inc.	Executive Vice President and Chief Financial Officer	2014 - 2017	Role held during the transition phase at FMC Technologies
FMC Technologies, Inc.	Senior Vice President and Chief Financial Officer	2011 - 2014	Served as SVP with CFO responsibilities
FMC Technologies, Inc.	Various positions of increasing responsibility	1986 - 2011	Progressed through multiple financial roles over the years

External Roles

Organization	Role	Date Range	Details
Owens Corning	Board of Directors; Audit Committee Chair	Since 2019	Serving as audit committee chair since 2019

Fixed Compensation

Data from FY 2023

Component Name	Amount	Payment Schedule	Additional Details
Base Salary	$987,808	2023 Annual	Actual base salary earned during 2023.
All Other Compensation	$210,861	2023 Annual	Includes Company Contributions to Defined Contribution Plans ($164,144 ) and Perquisites/Other Benefits ($46,717 ).

Performance Compensation

Data from FY 2023

MPC Performance Share Units (PSUs)

Metric	Value	Details
Threshold	10,881 units	Minimum performance level required for payout.
Target	21,762 units	Standard performance expectation.
Maximum (Cap)	43,524 units	Maximum payout capped at 200% of target; if TSR is negative, payout capped at 100%.
Grant Date	3/1/2023	Award effective date.
Grant Date Fair Value	$3,607,872	Valuation associated with MPC PSUs.
Vesting Schedule	Vests at end of performance period (12/31/2025)	Full vesting after the three-year performance period (1/1/2023 – 12/31/2025).
Performance Metric	Three-year TSR	Measured relative to a peer group.

MPC Restricted Stock Units (RSUs)

Metric	Value	Details
Grant Date	3/1/2023	Award effective date.
Grant Date Fair Value	$937,144	Valuation for the RSUs component.
Vesting Schedule	Not explicitly provided	Typically vest over time; further details not available.

MPLX Phantom Units

Metric	Value	Details
Grant Date	3/1/2023	Award effective date.
Grant Date Fair Value	$895,584	Valuation for the Phantom Units.
Vesting Schedule	Not explicitly provided	Vesting details are not specified.

Special Long-Term Incentive (LTI) Award

Metric	Value	Details
Award Value	$500,000	Special LTI award in recognition of 2022 leadership contributions.
Award Mix	60% MPC PSUs, 20% MPC RSUs, 20% MPLX Phantom Units	The mix mirrors her 2023 LTI target award composition.