Marathon Petroleum Corporation (MPC)
NYSE: MPC · Petroleum Refining · Findlay, OH · filing with the SEC since 2011
Grade5.9
◀ Past 7.0● Present 5.3▶ Future 4.7
Who owns Marathon Petroleum Corporation
As filed with the SECHolders of 5% or more
3
Blackrock, Inc. holds 7.9% of Common Stock, as its SCHEDULE 13G/A filed Oct 27, 2026 says.
Directors and officers
19
report now, of 50 people on the record since 2011. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 3 named at left.
Holders of 5% or moreshare of the class, as filed
Blackrock, Inc.
SCHEDULE 13G/A · filed Oct 27, 2026 · Common Stock · 6.8% in Apr 23, 2025
Vanguard Capital Management
SCHEDULE 13G · filed Apr 30, 2026 · Common Stock
Vanguard Portfolio Management
SCHEDULE 13G · filed Apr 29, 2026 · Common Stock
The Vanguard Group
SCHEDULE 13G/A · filed Mar 27, 2026 · Common Stock · reported falling below 5%, from 12.7% in Jul 29, 2025
What MPC reports owning in othersstakes of 5% or more, and other ties
Other ties the annual report names
Mplx LP
An entity · legal entity · owns, named in the 10-K filed Feb 26, 2026
Bangl
An investee · investee, subsidiary · invested in, named in the 10-K filed Feb 26, 2026
Capline Pipeline LLC
An investee · investee · invested in, named in the 10-K filed Feb 26, 2026
Coastal Holdings
An investee · investee · invested in, named in the 10-K filed Feb 26, 2026
Gray Oak Pipeline LLC
An investee · investee · invested in, named in the 10-K filed Feb 26, 2026
Illinois Extension Pipeline Company LLC
An investee · investee, subsidiary · invested in, named in the 10-K filed Feb 26, 2026
LF Bioenergy
An investee · investee · invested in, named in the 10-K filed Feb 26, 2026
Loop Llc
An investee · investee, subsidiary · invested in, named in the 10-K filed Feb 26, 2026
148 subsidiaries in 6 countries, from the list filed with the 10-K filed Feb 26, 2026.
Insider tradesForm 4
17sales
0purchases
3sales on a scheduled plan
5people selling
$13.9Msold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Sep 30, 2025 to Sep 30, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2026 runs to Sep 30, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window5 of 50 on the roster
| Person | Role as filed | Sales | Sold | On a plan | Buys | Bought |
|---|---|---|---|---|---|---|
| Benson Molly R | Chief Legal Ofc & Corp Sec | 3 | $6.2M | 3 | 0 | $0 |
| Henschen Michael A II | Ex VP, Refining | 4 | $4.8M | 0 | 0 | $0 |
| Lyon Shawn M | SVP Log & Storage, MPLX GP LLC | 3 | $1.4M | 0 | 0 | $0 |
| Hessling Ricky D. | Chief Commercial Officer | 6 | $1.3M | 0 | 0 | $0 |
| Brzezinski Erin M | VP and Controller | 1 | $200,000 | 0 | 0 | $0 |