Marathon Petroleum Corp
MPC- Exchange
- NYSE
- Industry
- Petroleum Refining
- SEC CIK
- 0001510295
In the last 90 days, Marathon Petroleum Corp insiders filed 0 open-market purchases and 5 sales; 1,954 institutions reported holding it in 13F filings for Q2 2026, worth $56.0B in total; Harris Associates (Oakmark) is the only superinvestor holding it.
Holders of 5% or more of MPC
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Marathon Petroleum Corp, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| BlackRock, Inc. | 13G/A | 6.80%21.1M shares | – | Apr 23, 20251 filing | Apr 23, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
4 Schedule 13D and 13G filings on Marathon Petroleum Corp, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Mar 27, 202610:31 AM ET | Vanguard Group Inc | 13G/A | 0.00%0 shares | −12.65 ppfrom 12.65%Below 5% | Mar 13, 2026 | SEC |
| Jul 29, 20251:55 PM ET | Vanguard Group Inc | 13G/A | 12.65%38.9M shares | +1.44 ppfrom 11.21% | Jun 30, 2025 | SEC |
| Apr 30, 202511:14 AM ET | Vanguard Group Inc | 13G/A | 11.21%34.9M shares | – | Mar 31, 2025 | SEC |
| Apr 23, 20258:57 PM ET | BlackRock, Inc. | 13G/A | 6.80%21.1M shares | – | Mar 31, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Marathon Petroleum Corp shares.
No Form 144 notices for Marathon Petroleum Corp are on file.