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MPC

Marathon Petroleum

XNYS · PETROLEUM REFINING

9 articles20 insider tx0 holders0 supply chain9 selling intent filings0 new insiders

Research articles

Includes notes from domestic 8-K and foreign private issuer 6-K disclosures.

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Recent insider activity

Insider net $ (monthly)open-market Form 4 only - grants, exercises, tax withholding excluded$10.0M$5.0M$0-$5.0M-$10.0M2024-10 $02024-11 $02024-12 $898K2025-01 $02025-02 $02025-03 $403K2025-04 $02025-05 $02025-06 $02025-07 -$1.3M2025-08 -$1.8M2025-09 $02025-10 $02025-11 $02025-12 $02026-01 $02026-02 -$1.1M2026-03 -$1.0M2026-04 $02026-05 -$250K2026-06 -$1.7M2026-07 $02026-08 -$8.0M2026-09 $0Oct 24Dec 24Feb 25Apr 25Jun 25Aug 25Oct 25Dec 25Feb 26Apr 26Jun 26Aug 26~ derived from SEC-reported shares x price. Hatched: excluded (implausible price) or unpriced.

open-market Form 4 only - grants, exercises, tax withholding excluded

0 buyers - 4 unique sellers · Institutional activity: not available - insufficient comparable institutions for the latest complete quarter.

Date Insider Title Type Shares Price Value
August 31, 2026 Lyon Shawn M SVP Log & Storage, MPLX GP LLC SELL -1,000 $376 ~$0.4M
August 28, 2026 Lyon Shawn M SVP Log & Storage, MPLX GP LLC SELL -425 $369 ~$0.2M
August 27, 2026 Brzezinski Erin M VP and Controller SELL -570 $363 ~$0.2M
August 17, 2026 Benson Molly R Chief Legal Ofc & Corp Sec OPTION_EXERCISE 7,196 $48 ~$0.3M
August 17, 2026 Benson Molly R Chief Legal Ofc & Corp Sec SELL -7,196 $359 ~$2.6M
August 17, 2026 Benson Molly R Chief Legal Ofc & Corp Sec OPTION_EXERCISE 5,000 $48 ~$0.2M
August 17, 2026 Benson Molly R Chief Legal Ofc & Corp Sec SELL -5,000 $359 ~$1.8M
August 17, 2026 Benson Molly R Chief Legal Ofc & Corp Sec OPTION_EXERCISE -7,196 — —
August 17, 2026 Benson Molly R Chief Legal Ofc & Corp Sec OPTION_EXERCISE -5,000 — —
August 13, 2026 Lyon Shawn M SVP Log & Storage, MPLX GP LLC SELL -2,500 $350 ~$0.9M
August 12, 2026 Henschen Michael A II Ex VP, Refining SELL -6,011 $342 ~$2.1M
August 3, 2026 Mannen Maryann T. Chairman, President & CEO TAX_WITHHOLD -908 $312 ~$0.3M
June 4, 2026 Henschen Michael A II Ex VP, Refining SELL -1,372 $269 ~$0.4M
June 4, 2026 Henschen Michael A II Ex VP, Refining OPTION_EXERCISE 4,964 $50 ~$0.2M
June 4, 2026 Henschen Michael A II Ex VP, Refining SELL -4,964 $269 ~$1.3M
June 4, 2026 Henschen Michael A II Ex VP, Refining OPTION_EXERCISE -4,964 — —
May 13, 2026 Hessling Ricky D. Chief Commercial Officer SELL -1,000 $250 ~$0.3M
April 30, 2026 Surma John P — GRANT 727.74 — —
April 30, 2026 Stice J Michael — GRANT 727.74 — —
April 30, 2026 Semple Frank M — GRANT 727.74 — —

Insider Selling Intent (Form 144)

Date Filer Relationship Est. shares Filing
August 31, 2026 Lyon Shawn M — 1,000 SEC
August 28, 2026 Lyon Shawn M — 425 SEC
August 27, 2026 Brzezinski Erin M — 570 SEC
August 24, 2026 Hagedorn Carl Kristopher — 897 SEC
August 20, 2026 Lyon Shawn M — 2,500 SEC
August 17, 2026 Benson Molly R — 17,196 SEC
August 12, 2026 Henschen Michael A II — 6,011 SEC
June 4, 2026 Henschen Michael A II — 6,336 SEC
May 13, 2026 Hessling Ricky D. — 1,000 SEC
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