Comparable stake leader
VANGUARD CAPITAL MANAGEMENT LLC
SEC ownership of Marathon Petroleum Corp
Top holders, 13D/G large-stake signals, insider positions, and transaction flow tied to CIK 0001510295.
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
28 Aug 2026
- Public ticker
- MPC on NYSE
- Parsed ownership sources
-
13D/G, 13F, and 3/4/5
Source: Parsed SEC ownership filingsUse: Compare filing families carefully
- Largest SEC-reported holder
-
VANGUARD CAPITAL MANAGEMENT LLC
Ranking: Comparable ownership first, then disclosed value
- Comparable ownership rows
-
50 of 50
Meaning: Rows with safely comparable ownership %
- Latest 13D/G holder
-
VANGUARD CAPITAL MANAGEMENT LLC
Source: Latest parsed Schedule 13D/G stake
- Latest parsed ownership date
-
28 Aug 2026
Freshness: Most recent filing date in this holder set
- Issuer CIK
- 0001510295
- Issuer location
- Findlay, OH
Ownership snapshot
CIK-linked ownership evidence from parsed SEC filings.
3 signals
Issuer
Names, identifiers, and filing context for this profile.
2 identity fields
Ownership snapshot
Top shareholders of Marathon Petroleum Corp (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
VANGUARD CAPITAL MANAGEME...
Disclosed value leader
BlackRock, Inc.
Comparable rows
50/50
Latest evidence
28 Aug 2026
13D/G
13F
3/4/5
Lead comparable stake: 7.5%
13D/G row: VANGUARD CAPITAL MANAGEMENT LLC
Showing 1-8 of 50 holder rows.
Quick read
VANGUARD CAPITAL MANAGEMENT LLC leads the comparable SEC ownership view at 7.5%.
50 of 50 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens VANGUARD CAPITAL MANAGEMENT LLC's linked filing trail.
Comparable ownership
Top 5
VANGUARD CAPITAL MANAGEMENT LLC
7.5%
BlackRock, Inc.
6.8%
VANGUARD PORTFOLIO MANAGEMENT LLC
5.4%
Michael J. Hennigan
0.08%
Maryann T. Mannen
0.04%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-8 of 50 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
7.5%
|
$5,407,992,910
22,147,567 shares
|
$0 | 31 Mar 2026 |
| BlackRock, Inc. |
13F
13D/G
Company
|
6.8%
from 13D/G
|
$6,648,958,398
26,006,017 shares
|
— | 30 Jun 2026 |
| VANGUARD PORTFOLIO MANAGEMENT LLC |
13F
13D/G
Company · Vanguard Portfolio Management
|
5.4%
from 13D/G
|
$3,996,445,522
15,631,265 shares
|
— | 30 Jun 2026 |
| Michael J. Hennigan |
3/4/5
Executive Chairman, Director
|
0.08%
|
$41,036,964
220,902 shares
|
— | 12 Dec 2025 |
| Maryann T. Mannen |
3/4/5
Chairman, President & CEO, Director
|
0.04%
|
$28,363,774
110,939 shares
|
— | 03 Aug 2026 |
| Evan Bayh |
3/4/5
Director
|
0.02%
|
$17,825,356
73,001 shares
|
— | 30 Apr 2026 |
| John P. Surma |
3/4/5
Director
|
0.02%
|
$17,312,580
70,901 shares
|
— | 30 Apr 2026 |
| Gregory S. Floerke |
3/4/5
Ex VP & COO, MPLX GP LLC
|
0.01%
|
$6,552,336
31,768 shares
|
— | 01 Mar 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
Forms 3/4/5 flow
Insider trading overview
Net insider flow leans to selling over the last 12 months. Net value: -$12,079,140.
Buys
$0
Insiders: 0
Sells
$12,079,140
Insiders: 5
Net
-$12,079,140
Shares: -39,800
Window
Last 12 months
4 rolling buckets
Buy value
Sell value
Shares: 0
Shares: 39,800
| Window (months) | Buy shares | Sell shares | Buy value | Sell value | Net value |
|---|---|---|---|---|---|
| 0-3 | 0 | 22,702 | $0 | $8,040,376 | -$8,040,376 |
| 3-6 | 0 | 11,809 | $0 | $2,968,694 | -$2,968,694 |
| 6-9 | 0 | 5,289 | $0 | $1,070,070 | -$1,070,070 |
| 9-12 | 0 | 0 | $0 | $0 | $0 |
Reporting owners
Insider holders from Forms 3/4/5
Showing 1-20 of 31 reporting-owner rows connected to Marathon Petroleum Corp. Open a relationship link for the CIK-to-CIK filing trail.
Rows
31
Largest Forms 3/4/5 holder
Michael J. Hennigan
Net 12M change
-$12,079,140
Latest report
28 Aug 2026
| Name | Relationship | Holdings Value | Past Year Net Change | Change % | Valuation | Report Date |
|---|---|---|---|---|---|---|
| Michael J. Hennigan | Executive Chairman, Director | $41,036,964 | Mixed | 12 Dec 2025 | ||
| Maryann T. Mannen | Chairman, President & CEO, Director | $28,363,774 | Median | 03 Aug 2026 | ||
| Evan Bayh | Director | $17,825,356 | Mixed | 30 Apr 2026 | ||
| John P. Surma | Director | $17,312,580 | Mixed | 30 Apr 2026 | ||
| Raymond L. Brooks | Ex. VP, Refining | $13,673,550 | Mixed | 23 May 2022 | ||
| Molly R. Benson | Chief Legal Ofc & Corp Sec | $10,899,570 | -$4,373,120 | -29% | Mixed | 17 Aug 2026 |
| Timothy T. Griffith | President, Speedway LLC | $10,770,656 | Mixed | 14 May 2021 | ||
| Steven A. Davis | Director | $7,116,079 | Mixed | 01 Jul 2022 | ||
| Suzanne Gagle | Gen Counsel and SVP Gov Aff | $6,940,639 | Mixed | 01 Dec 2023 | ||
| Gregory S. Floerke | Ex VP & COO, MPLX GP LLC | $6,552,336 | Mixed | 01 Mar 2026 | ||
| Abdulaziz Fahd al Khayyal | Director | $6,336,719 | Mixed | 30 Apr 2026 | ||
| J. Michael Stice | Director | $6,036,435 | Mixed | 30 Apr 2026 | ||
| John J. Quaid | Exec VP & Chief Fin Ofc | $5,270,683 | Mixed | 01 Mar 2025 | ||
| Shawn M. Lyon | SVP Log & Storage, MPLX GP LLC | $4,957,498 | -$1,407,367 | -22% | Mixed | 28 Aug 2026 |
| Kim K.w. Rucker | Director | $4,872,696 | Mixed | 30 Apr 2026 | ||
| Charles E. Bunch | Director | $4,679,419 | Mixed | 01 Apr 2025 | ||
| Jonathan Z. Cohen | Director | $3,964,201 | Mixed | 30 Apr 2026 | ||
| Susan Tomasky | Director | $3,803,537 | Mixed | 01 Apr 2025 | ||
| Michael A. Henschen II | Ex VP, Refining | $3,719,214 | -$4,826,441 | -56% | Filing P/S | 12 Aug 2026 |
| Frank M. Semple | Director | $3,594,251 | Mixed | 30 Apr 2026 |
Recent insider transactions for Marathon Petroleum Corp
Showing up to 300 recent insider transactions from the last 12 months.
| Insider | Symbol | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares owned | Date | Ownership |
|---|---|---|---|---|---|---|---|---|---|---|
| Shawn M. Lyon | MPC | Common Stock | Sale | -8.2% | $375,750 | $375.75 | -1,000 | 11,194 | 31 Aug 2026 | Direct |
| Shawn M. Lyon | MPC | Common Stock | Sale | -3.37% | $156,617 | $368.51 | -425 | 12,194 | 28 Aug 2026 | Direct |
| Erin M. Brzezinski | MPC | Common Stock | Sale | -26.6% | $206,790 | $362.79 | -570 | 1,576 | 27 Aug 2026 | Direct |
| Molly R. Benson | MPC | Common Stock | Sale | -28.7% | $4,373,120 | $358.57 | -12,196 | 30,334 | 17 Aug 2026 | Direct |
| Molly R. Benson | MPC | Common Stock | Options Exercise | 48.1% | 12,196 | 37,530 | 17 Aug 2026 | Direct | ||
| Molly R. Benson | MPC | Employee Stock Option (right to buy) | Options Exercise | -100% | -17,196 | 0 | 17 Aug 2026 | Direct | ||
| Shawn M. Lyon | MPC | Common Stock | Sale | -16.5% | $875,000 | $350.00 | -2,500 | 12,619 | 13 Aug 2026 | Direct |
| Michael A. Henschen II | MPC | Common Stock | Sale | -35.6% | $2,053,099 | $341.56 | -6,011 | 10,889 | 12 Aug 2026 | Direct |
| Maryann T. Mannen | MPC | Common Stock | Tax liability | -0.81% | -908 | 110,939 | 03 Aug 2026 | Direct | ||
| Michael A. Henschen II | MPC | Common Stock | Options Exercise | 29.4% | 4,964 | 21,864 | 04 Jun 2026 | Direct | ||
| Michael A. Henschen II | MPC | Common Stock | Sale | -27.3% | $1,703,272 | $268.82 | -6,336 | 16,900 | 04 Jun 2026 | Direct |
| Michael A. Henschen II | MPC | Employee Stock Option (right to buy) | Options Exercise | -100% | -4,964 | 0 | 04 Jun 2026 | Direct | ||
| Ricky D. Hessling | MPC | Common Stock | Sale | -13.3% | $250,000 | $250.00 | -1,000 | 6,525 | 13 May 2026 | Direct |
| John P. Surma | MPC | Common Stock | Award | 1.21% | 728 | 60,901 | 30 Apr 2026 | Direct | ||
| J. Michael Stice | MPC | Common Stock | Award | 3.03% | 728 | 24,721 | 30 Apr 2026 | Direct | ||
| Frank M. Semple | MPC | Common Stock | Award | 5.2% | 728 | 14,720 | 30 Apr 2026 | Direct | ||
| Kim K.w. Rucker | MPC | Common Stock | Award | 3.78% | 728 | 19,955 | 30 Apr 2026 | Direct | ||
| Eileen P. Paterson | MPC | Common Stock | Award | 29.4% | 728 | 3,203 | 30 Apr 2026 | Direct | ||
| Kimberly N. Ellison-Taylor | MPC | Common Stock | Award | 29.4% | 728 | 3,203 | 30 Apr 2026 | Direct | ||
| Jonathan Z. Cohen | MPC | Common Stock | Award | 4.69% | 728 | 16,235 | 30 Apr 2026 | Direct | ||
| Jeffrey C. Campbell | MPC | Common Stock | Award | 39.3% | 728 | 2,581 | 30 Apr 2026 | Direct | ||
| Evan Bayh | MPC | Common Stock | Award | 1.01% | 728 | 73,001 | 30 Apr 2026 | Direct | ||
| Abdulaziz Fahd al Khayyal | MPC | Common Stock | Award | 2.89% | 728 | 25,951 | 30 Apr 2026 | Direct | ||
| Ricky D. Hessling | MPC | Common Stock | Sale | -17.8% | $371,021 | $228.18 | -1,626 | 7,525 | 13 Mar 2026 | Direct |
| Ricky D. Hessling | MPC | Common Stock | Sale | -10.2% | $237,554 | $229.08 | -1,037 | 9,151 | 12 Mar 2026 | Direct |
| Ricky D. Hessling | MPC | Common Stock | Sale | -15.1% | $406,847 | $224.78 | -1,810 | 10,188 | 11 Mar 2026 | Direct |
| Shawn M. Lyon | MPC | Common Stock | Gift | -7.27% | -1,186 | 15,119 | 11 Mar 2026 | Direct | ||
| Maryann T. Mannen | MPC | Common Stock | Tax liability | -3.42% | -3,966 | 111,847 | 02 Mar 2026 | Direct | ||
| Shawn M. Lyon | MPC | Common Stock | Tax liability | -4.53% | -773 | 16,305 | 02 Mar 2026 | Direct | ||
| Ricky D. Hessling | MPC | Common Stock | Gift | -14.5% | -2,028 | 11,998 | 02 Mar 2026 | Direct | ||
| Ricky D. Hessling | MPC | Common Stock | Tax liability | -5.31% | -786 | 14,026 | 02 Mar 2026 | Direct | ||
| Michael A. Henschen II | MPC | Common Stock | Tax liability | -2.56% | -481 | 18,272 | 02 Mar 2026 | Direct | ||
| Gregory S. Floerke | MPC | Common Stock | Tax liability | -2.53% | -807 | 31,031 | 02 Mar 2026 | Direct | ||
| Erin M. Brzezinski | MPC | Common Stock | Tax liability | -6.53% | -150 | 2,146 | 02 Mar 2026 | Direct | ||
| Molly R. Benson | MPC | Common Stock | Tax liability | -2.58% | -803 | 30,334 | 02 Mar 2026 | Direct | ||
| Maryann T. Mannen | MPC | Common Stock | Award | 15.2% | 15,266 | 115,813 | 01 Mar 2026 | Direct | ||
| Maria A. Khoury | MPC | Common Stock | Award | 155.2% | 2,443 | 4,017 | 01 Mar 2026 | Direct | ||
| Shawn M. Lyon | MPC | Common Stock | Award | 11.3% | 1,730 | 17,078 | 01 Mar 2026 | Direct | ||
| Ricky D. Hessling | MPC | Common Stock | Award | 22.8% | 2,748 | 14,812 | 01 Mar 2026 | Direct | ||
| Michael A. Henschen II | MPC | Common Stock | Award | 13.9% | 2,290 | 18,753 | 01 Mar 2026 | Direct | ||
| Gregory S. Floerke | MPC | Common Stock | Award | 5.75% | 1,730 | 31,838 | 01 Mar 2026 | Direct | ||
| Erin M. Brzezinski | MPC | Common Stock | Award | 28.5% | 509 | 2,296 | 01 Mar 2026 | Direct | ||
| Molly R. Benson | MPC | Common Stock | Award | 8.9% | 2,544 | 31,137 | 01 Mar 2026 | Direct | ||
| Michael A. Henschen II | MPC | Common Stock | Gift | -3.01% | -511 | 16,463 | 12 Feb 2026 | Direct | ||
| Michael A. Henschen II | MPC | Common Stock | Sale | -23.8% | $1,070,070 | $202.32 | -5,289 | 16,974 | 12 Feb 2026 | Direct |
| Maria A. Khoury | MPC | Common Stock | Award | 1,574 | 1,574 | 01 Feb 2026 | Direct | |||
| Shawn M. Lyon | MPC | Common Stock | Tax liability | -0.56% | -86 | 15,348 | 12 Dec 2025 | Direct | ||
| Ricky D. Hessling | MPC | Common Stock | Tax liability | -0.81% | -98 | 12,064 | 12 Dec 2025 | Direct | ||
| Michael A. Henschen II | MPC | Common Stock | Tax liability | -0.71% | -160 | 22,263 | 12 Dec 2025 | Direct | ||
| Michael J. Hennigan | MPC | Common Stock | Tax liability | -0.21% | -466 | 220,902 | 12 Dec 2025 | Direct |
* marks a reported price that did not pass the local price check.