MPLX LP
MPLX- Exchange
- NYSE
- Industry
- Pipe Lines (No Natural Gas)
- SEC CIK
- 0001552000
No open-market purchases or sales by MPLX LP insiders were filed in the last 90 days; 639 institutions reported holding it in 13F filings for Q2 2026, worth $11.1B in total; Appaloosa is the only superinvestor holding it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by MPLX LP insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 0 filings
- Insiders trading
- 0
- Net value
- $0
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for MPLX LP, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Peiffer Garry L. | Director | 69,313 | Aug 18, 2026 | 5 |
| Walker Ray N JR | Director | 4,609 | Aug 18, 2026 | 5 |
| Surma John P | Director | 95,448 | Aug 18, 2026 | 5 |
| Stice J Michael | Director | 58,413 | Aug 18, 2026 | 5 |
| Semple Frank M | Director | 63,476 | Aug 18, 2026 | 5 |
| Helms Christopher A | Director | 86,208 | Aug 18, 2026 | 5 |
| Breves Christine S | Director | 15,038 | Aug 18, 2026 | 5 |
| Floerke Gregory Scott | Exec. VP and COO | 95,337 | Mar 3, 2026 | 2 |
| Mannen Maryann T. | Chairman, President & CEO | 165,459 | Mar 3, 2026 | 1 |
| Hagedorn Carl Kristopher | Exec VP & Chief Fin Ofc | 20,409 | Mar 3, 2026 | 1 |
| Lyon Shawn M | Senior VP, Log. & Storage | 28,289 | Mar 3, 2026 | 2 |
| Benson Molly R | Chief Legal Ofc & Corp Sec | 46,114 | Mar 3, 2026 | 2 |
| Khoury Maria A | Director | 8,451 | Mar 3, 2026 | 1 |
| Hennigan Michael J | Executive Chairman | 359,137 | Dec 16, 2025 | 1 |
| Quaid John J | Director | 52,393 | Mar 4, 2025 | 0 |
| Gagle Suzanne | General Counsel | 67,205 | Dec 5, 2023 | 0 |
| Sandman Dan D | Director | 127,542 | Apr 5, 2023 | 0 |
| Kaczynski Thomas | Senior VP, Finance & Treasurer | 18,091 | Dec 6, 2022 | 0 |
| Aydt Timothy J | Exec. VP and Chief Comm Ofc. | 34,371 | Mar 3, 2022 | 0 |
| Beall Pamela K.M. | Director | 43,247 | Dec 13, 2021 | 0 |
| Templin Donald C. | Director | 81,538 | Nov 23, 2021 | 0 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Mar 11, 2025 (view filing) | Mar 7 | 4 days | Lyon Shawn MSenior VP, Log. & Storage | PPurchaseCommon Units (Limited Partner Interests) | +4.00K | $52.75 | +$211.0K | +18.8%25.3K after | |
| Nov 20, 2024 (view filing) | Nov 18 | 2 days | Hagedorn Carl KristopherExec VP & Chief Fin Ofc | SSaleCommon Units (Limited Partner Interests) | −4.00K | $47.24 | −$189.0K | −21.3%14.8K after | |
| Apr 21, 2022 (view filing) | Apr 19 | 2 days | Floerke Gregory ScottExec. VP and COO | SSaleCommon Units (Limited Partner Interests) | −2.50K | $35.00 | −$87.5K | −3.0%80.2K after | |
| Feb 9, 2022 (view filing) | Feb 7 | 2 days | Floerke Gregory ScottExec. VP and COO | SSaleCommon Units (Limited Partner Interests) | −2.50K | $33.20 | −$83.0K | −3.2%76.8K after | |
| Feb 3, 2022 (view filing) | Feb 1-2 | 2 days | Semple Frank MDirector | SSaleCommon Units (Limited Partner Interests) | −56.0K | $33.50 | −$1.88M | −14.4%333.3K after | 2 lots |
| Nov 10, 2021 (view filing) | Nov 8 | 2 days | Semple Frank MDirector | SSaleCommon Units (Limited Partner Interests) | −27.0K | $32.00 | −$864.0K | −6.5%389.3K after | |
| Nov 10, 2021 (view filing) | Nov 8 | 2 days | Floerke Gregory ScottExec. VP and COO | SSaleCommon Units (Limited Partner Interests) | −5.00K | $31.26 | −$156.3K | −6.0%78.9K after | 2 lots |