When do the leadership changes take effect?

All changes are effective August 1, 2024, including Mannen's appointment as CEO and Board member, Hennigan's move to Executive Chairman, and Surma's election as Lead Director.

Who is Maryann Mannen and what is her background?

Mannen has been MPC President since January 1, 2024, and previously served as EVP and CFO from January 2021. Before MPC, she was EVP and CFO of TechnipFMC from 2017 and held senior finance roles at FMC Technologies from 1986 to 2017. She is audit committee chair at Owens Corning and is 61 years old.

Is Hennigan leaving MPC?

No. Hennigan steps down as CEO but becomes Executive Chairman of the Board and remains an executive officer. The Board waived the company's mandatory retirement policy for him indefinitely.

Has Mannen's or Hennigan's pay changed?

Not yet. The company states that compensation adjustments for the new roles have not been determined and will be disclosed in an amendment to this 8-K. Current pay levels and targets are listed in the filing.

Does the transition involve any related-party transactions or unusual arrangements?

The filing states there are no family relationships between Mannen and any director or executive officer, and she has no interest in any transaction requiring disclosure under Item 404(a) of Regulation S-K. Her appointment is tied only to the employment and compensation matters described.

MPC 8-K: Leadership Changes

01—Abstract

Summary

Summary of the 8-K filed May 13, 2024. Cited figures are marked; the original filing is the authoritative source.

Marathon Petroleum Corp (MPC) announced a planned CEO succession, effective August 1, 2024.

President Maryann T. Mannen, who previously served as EVP and CFO from 2021, will succeed Michael J. Hennigan as Chief Executive Officer and will also join the Board of Directors, where she will sit on the Sustainability and Public Policy Committee.

Mannen will continue as President and will also become President and CEO of MPLX GP LLC, the general partner of MPLX LP, effective the same date. Hennigan, who has led MPC as CEO since March 2020, will become Executive Chairman of the Board, and independent Chairman John Surma will become Lead Director. The Board also waived its mandatory executive retirement policy for Hennigan, who is 65 or older, indefinitely.

For investors, the filing is primarily a governance and continuity event rather than a financial one. The company points to roughly $37 billion^a returned to shareholders through dividends and buybacks under Hennigan's tenure, a total shareholder return of 918% since March 2020 (dividends reinvested), the strategic sale of the retail business, and growth at subsidiary MPLX LP. The transition is designed to keep strategic continuity, and the internal succession with a CFO-turned-CEO should be read against that backdrop.

Compensation changes have not yet been set. Hennigan's current base salary is $1,750,000^b with a 165% target bonus and a $14.8 million 2024 LTI target; Mannen's base salary is $1,050,000 with a 120% target bonus and a $5.0 million 2024 LTI target. The company will file an 8-K/A once the new compensation for the Executive Chairman and CEO roles is determined, so investors should watch for that amendment.

02—Key points

Key Highlights

Maryann T. Mannen, currently President and former EVP & CFO, named CEO effective August 1, 2024, succeeding Michael J. Hennigan.
Hennigan moves to Executive Chairman of the Board; Chairman John Surma becomes Lead Director, effective August 1, 2024.
Mannen joins the 14-member Board (board size increased from prior level) and the Sustainability and Public Policy Committee; she receives no board compensation as an officer.
Mannen also becomes President and CEO of MPLX GP LLC effective August 1, 2024, linking leadership of MPC and its MLP subsidiary.
Board indefinitely waived the mandatory executive retirement policy (age 65) for Hennigan.
Compensation for the new Executive Chairman and CEO roles is not yet determined; an 8-K/A will follow. Current targets: Hennigan $1.75M base / 165% bonus / $14.8M LTI; Mannen $1.05M base / 120% bonus / $5.0M LTI.
Company cites ~$37B returned to shareholders and 918% total shareholder return (dividends reinvested) since March 2020 under Hennigan's tenure.

03—Questions

Frequently Asked Questions

When do the leadership changes take effect?
All changes are effective August 1, 2024, including Mannen's appointment as CEO and Board member, Hennigan's move to Executive Chairman, and Surma's election as Lead Director.
Who is Maryann Mannen and what is her background?
Mannen has been MPC President since January 1, 2024, and previously served as EVP and CFO from January 2021. Before MPC, she was EVP and CFO of TechnipFMC from 2017 and held senior finance roles at FMC Technologies from 1986 to 2017. She is audit committee chair at Owens Corning and is 61 years old.
Is Hennigan leaving MPC?
No. Hennigan steps down as CEO but becomes Executive Chairman of the Board and remains an executive officer. The Board waived the company's mandatory retirement policy for him indefinitely.
Has Mannen's or Hennigan's pay changed?
Not yet. The company states that compensation adjustments for the new roles have not been determined and will be disclosed in an amendment to this 8-K. Current pay levels and targets are listed in the filing.
Does the transition involve any related-party transactions or unusual arrangements?
The filing states there are no family relationships between Mannen and any director or executive officer, and she has no interest in any transaction requiring disclosure under Item 404(a) of Regulation S-K. Her appointment is tied only to the employment and compensation matters described.

04—Continue

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