The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
| Date | Insider | Role | Action | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 31, 2026 | Lyon Shawn M | SVP Log & Storage, MPLX GP LLC | Sell(S) | 1K | $375.75 | $376K |
| Aug 28, 2026 | Lyon Shawn M | SVP Log & Storage, MPLX GP LLC | Sell(S) | 425 | $368.51 | $157K |
| Aug 27, 2026 | Brzezinski Erin M | VP and Controller | Sell(S) | 570 | $362.79 | $207K |
| Aug 17, 2026 | Benson Molly R | Chief Legal Ofc & Corp Sec | Option exercise(M) | 5K | — | $0 |
| Aug 17, 2026 | Benson Molly R | Chief Legal Ofc & Corp Sec | Option exercise(M) | 5K | — | $0 |
| Aug 17, 2026 | Benson Molly R | Chief Legal Ofc & Corp Sec | Option exercise(M) | 7K | — | $0 |
| Aug 17, 2026 | Benson Molly R | Chief Legal Ofc & Corp Sec | Sell(S) | 5K | $358.57 | $1.8M |
| Aug 17, 2026 | Benson Molly R | Chief Legal Ofc & Corp Sec | Option exercise(M) | 5K | $47.73 | $239K |
| Aug 17, 2026 | Benson Molly R | Chief Legal Ofc & Corp Sec | Sell(S) | 5K | $358.57 | $1.8M |
| Aug 17, 2026 | Benson Molly R | Chief Legal Ofc & Corp Sec | Option exercise(M) | 5K | $47.73 | $239K |
| Aug 17, 2026 | Benson Molly R | Chief Legal Ofc & Corp Sec | Sell(S) | 7K | $358.57 | $2.6M |
| Aug 17, 2026 | Benson Molly R | Chief Legal Ofc & Corp Sec | Option exercise(M) | 7K | $47.73 | $343K |
| Aug 13, 2026 | Lyon Shawn M | SVP Log & Storage, MPLX GP LLC | Sell(S) | 3K | $350.00 | $875K |
| Aug 12, 2026 | Henschen Michael A II | Ex VP, Refining | Sell(S) | 6K | $341.56 | $2.1M |
| Aug 3, 2026 | Mannen Maryann T. | Chairman, President & CEO, Director | Tax withholding(F) | 908 | $311.78 | $283K |
| Jun 4, 2026 | Henschen Michael A II | Ex VP, Refining | Sell(S) | 1K | $268.75 | $369K |
| Jun 4, 2026 | Henschen Michael A II | Ex VP, Refining | Option exercise(M) | 5K | $49.94 | $248K |
| Jun 4, 2026 | Henschen Michael A II | Ex VP, Refining | Sell(S) | 5K | $268.85 | $1.3M |
| Jun 4, 2026 | Henschen Michael A II | Ex VP, Refining | Option exercise(M) | 5K | — | $0 |
| May 13, 2026 | Hessling Ricky D. | Chief Commercial Officer | Sell(S) | 1K | $250.00 | $250K |
| Apr 30, 2026 | Cohen Jonathan Z | Director | Grant(A) | 728 | — | $0 |
| Apr 30, 2026 | Al Khayyal Abdulaziz Fahd | Director | Grant(A) | 728 | — | $0 |
| Apr 30, 2026 | Bayh Evan | Director | Grant(A) | 728 | — | $0 |
| Apr 30, 2026 | Campbell Jeffrey C | Director | Grant(A) | 728 | — | $0 |
| Apr 30, 2026 | Ellison-Taylor Kimberly N | Director | Grant(A) | 728 | — | $0 |
| Apr 30, 2026 | Paterson Eileen P. | Director | Grant(A) | 728 | — | $0 |
| Apr 30, 2026 | Rucker Kim K.W. | Director | Grant(A) | 728 | — | $0 |
| Apr 30, 2026 | Semple Frank M | Director | Grant(A) | 728 | — | $0 |
| Apr 30, 2026 | Stice J Michael | Director | Grant(A) | 728 | — | $0 |
| Apr 30, 2026 | Surma John P | Director | Grant(A) | 728 | — | $0 |
| Mar 13, 2026 | Hessling Ricky D. | Chief Commercial Officer | Sell(S) | 2K | $228.18 | $371K |
| Mar 12, 2026 | Hessling Ricky D. | Chief Commercial Officer | Sell(S) | 478 | $228.00 | $109K |
| Mar 12, 2026 | Hessling Ricky D. | Chief Commercial Officer | Sell(S) | 559 | $230.00 | $129K |
| Mar 11, 2026 | Lyon Shawn M | SVP Log & Storage, MPLX GP LLC | Gift(G) | 1K | — | $0 |
| Mar 11, 2026 | Hessling Ricky D. | Chief Commercial Officer | Sell(S) | 325 | $226.00 | $73K |
| Mar 11, 2026 | Hessling Ricky D. | Chief Commercial Officer | Sell(S) | 1K | $224.51 | $333K |
| Mar 2, 2026 | Floerke Gregory Scott | Ex VP & COO, MPLX GP LLC | Tax withholding(F) | 278 | $206.30 | $57K |
| Mar 2, 2026 | Floerke Gregory Scott | Ex VP & COO, MPLX GP LLC | Tax withholding(F) | 278 | $206.30 | $57K |
| Mar 2, 2026 | Floerke Gregory Scott | Ex VP & COO, MPLX GP LLC | Tax withholding(F) | 251 | $206.30 | $52K |
| Mar 2, 2026 | Mannen Maryann T. | Chairman, President & CEO, Director | Tax withholding(F) | 2K | $206.30 | $461K |
| Mar 2, 2026 | Mannen Maryann T. | Chairman, President & CEO, Director | Tax withholding(F) | 952 | $206.30 | $196K |
| Mar 2, 2026 | Mannen Maryann T. | Chairman, President & CEO, Director | Tax withholding(F) | 778 | $206.30 | $161K |
| Mar 2, 2026 | Lyon Shawn M | SVP Log & Storage, MPLX GP LLC | Tax withholding(F) | 279 | $206.30 | $58K |
| Mar 2, 2026 | Lyon Shawn M | SVP Log & Storage, MPLX GP LLC | Tax withholding(F) | 237 | $206.30 | $49K |
| Mar 2, 2026 | Lyon Shawn M | SVP Log & Storage, MPLX GP LLC | Tax withholding(F) | 257 | $206.30 | $53K |
| Mar 2, 2026 | Benson Molly R | Chief Legal Ofc & Corp Sec | Tax withholding(F) | 171 | $206.30 | $35K |
| Mar 2, 2026 | Benson Molly R | Chief Legal Ofc & Corp Sec | Tax withholding(F) | 284 | $206.30 | $59K |
| Mar 2, 2026 | Benson Molly R | Chief Legal Ofc & Corp Sec | Tax withholding(F) | 348 | $206.30 | $72K |
| Mar 2, 2026 | Brzezinski Erin M | VP and Controller | Tax withholding(F) | 49 | $206.30 | $10K |
| Mar 2, 2026 | Brzezinski Erin M | VP and Controller | Tax withholding(F) | 42 | $206.30 | $9K |
| Mar 2, 2026 | Brzezinski Erin M | VP and Controller | Tax withholding(F) | 59 | $206.30 | $12K |
| Mar 2, 2026 | Hessling Ricky D. | Chief Commercial Officer | Tax withholding(F) | 312 | $206.30 | $64K |
| Mar 2, 2026 | Hessling Ricky D. | Chief Commercial Officer | Tax withholding(F) | 282 | $206.30 | $58K |
| Mar 2, 2026 | Hessling Ricky D. | Chief Commercial Officer | Tax withholding(F) | 192 | $206.30 | $40K |
| Mar 2, 2026 | Hessling Ricky D. | Chief Commercial Officer | Gift(G) | 2K | — | $0 |
| Mar 2, 2026 | Henschen Michael A II | Ex VP, Refining | Tax withholding(F) | 167 | $206.30 | $34K |
| Mar 2, 2026 | Henschen Michael A II | Ex VP, Refining | Tax withholding(F) | 123 | $206.30 | $25K |
| Mar 2, 2026 | Henschen Michael A II | Ex VP, Refining | Tax withholding(F) | 191 | $206.30 | $39K |
| Mar 1, 2026 | Floerke Gregory Scott | Ex VP & COO, MPLX GP LLC | Grant(A) | 2K | — | $0 |
| Mar 1, 2026 | Mannen Maryann T. | Chairman, President & CEO, Director | Grant(A) | 15K | — | $0 |
| Mar 1, 2026 | Lyon Shawn M | SVP Log & Storage, MPLX GP LLC | Grant(A) | 2K | — | $0 |
| Mar 1, 2026 | Benson Molly R | Chief Legal Ofc & Corp Sec | Grant(A) | 3K | — | $0 |
| Mar 1, 2026 | Brzezinski Erin M | VP and Controller | Grant(A) | 509 | — | $0 |
| Mar 1, 2026 | Hessling Ricky D. | Chief Commercial Officer | Grant(A) | 3K | — | $0 |
| Mar 1, 2026 | Henschen Michael A II | Ex VP, Refining | Grant(A) | 2K | — | $0 |
| Mar 1, 2026 | Khoury Maria A | Exec VP & Chief Fin Ofc | Grant(A) | 2K | — | $0 |
| Feb 12, 2026 | Henschen Michael A II | Ex VP, Refining | Gift(G) | 511 | — | $0 |
| Feb 12, 2026 | Henschen Michael A II | Ex VP, Refining | Sell(S) | 5K | $202.32 | $1.1M |
| Feb 1, 2026 | Khoury Maria A | Exec VP & Chief Fin Ofc | Grant(A) | 2K | — | $0 |
| Dec 12, 2025 | Benson Molly R | Chief Legal Ofc & Corp Sec | Tax withholding(F) | 107 | $185.77 | $20K |
| Dec 12, 2025 | Floerke Gregory Scott | Ex VP & COO, MPLX GP LLC | Tax withholding(F) | 85 | $185.77 | $16K |
| Dec 12, 2025 | Hennigan Michael J | Executive Chairman, Director | Tax withholding(F) | 466 | $185.77 | $87K |
| Dec 12, 2025 | Henschen Michael A II | Ex VP, Refining | Tax withholding(F) | 160 | $185.77 | $30K |
| Dec 12, 2025 | Hessling Ricky D. | Chief Commercial Officer | Tax withholding(F) | 98 | $185.77 | $18K |
| Dec 12, 2025 | Lyon Shawn M | SVP Log & Storage, MPLX GP LLC | Tax withholding(F) | 86 | $185.77 | $16K |
| Aug 15, 2025 | Benson Molly R | Chief Legal Ofc & Corp Sec | Option exercise(M) | 11K | $62.68 | $682K |
| Aug 15, 2025 | Benson Molly R | Chief Legal Ofc & Corp Sec | Sell(S) | 11K | $163.00 | $1.8M |
| Aug 15, 2025 | Benson Molly R | Chief Legal Ofc & Corp Sec | Option exercise(M) | 11K | — | $0 |
| Aug 1, 2025 | Mannen Maryann T. | President & CEO, Director | Tax withholding(F) | 908 | $166.39 | $151K |
| Jul 3, 2025 | Rucker Kim K.W. | Director | Sell(S) | 7K | $175.00 | $1.3M |
| May 1, 2025 | Al Khayyal Abdulaziz Fahd | Director | Grant(A) | 1K | — | $0 |
| May 1, 2025 | Bayh Evan | Director | Grant(A) | 1K | — | $0 |
| May 1, 2025 | Campbell Jeffrey C | Director | Grant(A) | 1K | — | $0 |
| May 1, 2025 | Cohen Jonathan Z | Director | Grant(A) | 1K | — | $0 |
| May 1, 2025 | Ellison-Taylor Kimberly N | Director | Grant(A) | 1K | — | $0 |
| May 1, 2025 | Paterson Eileen P. | Director | Grant(A) | 1K | — | $0 |
| May 1, 2025 | Rucker Kim K.W. | Director | Grant(A) | 1K | — | $0 |
| May 1, 2025 | Semple Frank M | Director | Grant(A) | 1K | — | $0 |
| May 1, 2025 | Stice J Michael | Director | Grant(A) | 1K | — | $0 |
| May 1, 2025 | Surma John P | Director | Grant(A) | 1K | — | $0 |
| Apr 1, 2025 | Surma John P | Director | Grant(A) | 94 | — | $0 |
| Apr 1, 2025 | Stice J Michael | Director | Grant(A) | 94 | — | $0 |
| Apr 1, 2025 | Semple Frank M | Director | Grant(A) | 94 | — | $0 |
| Apr 1, 2025 | Rucker Kim K.W. | Director | Grant(A) | 94 | — | $0 |
| Apr 1, 2025 | Paterson Eileen P. | Director | Grant(A) | 94 | — | $0 |
| Apr 1, 2025 | Ellison-Taylor Kimberly N | Director | Grant(A) | 94 | — | $0 |
| Apr 1, 2025 | Cohen Jonathan Z | Director | Grant(A) | 94 | — | $0 |
| Apr 1, 2025 | Campbell Jeffrey C | Director | Grant(A) | 94 | — | $0 |
| Apr 1, 2025 | Bunch Charles E | Director | Grant(A) | 94 | — | $0 |
| Apr 1, 2025 | Bayh Evan | Director | Grant(A) | 94 | — | $0 |
Insider transactions sourced from SEC EDGAR Form 4 filings, normalized within minutes of acceptance. "Buy"/"Sell" mark open-market transactions (codes P/S), the tradeable signal. Awards, option exercises and tax-withholding are shown with their raw code. All data is public domain.
Coverage: Form 4 filings indexed 2006-01-02 → 2026-09-02. Earlier history is backfilling; this window widens as it deepens.
Programmatic access via the Arkolith API & MCP server (insider.transactions, insider.company).
Connected pages for MPC