MPLX LP (MPLX)
Data as of , from SEC Form 4 filings.
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About MPLX LP (MPLX)
MPLX is a partnership that owns pipelines and gathering and processing assets with extensive holdings in the Appalachian and Permian regions. The asset base is made up of crude oil and refined products assets dropped down from Marathon Petroleum, its sponsor, and natural gas and natural gas liquids gathering and processing assets that were purchased or built.
- FINDLAY, OH
- 5,762
- 2012
- XNYS
MPLX Form 4 activity by transaction type, last 90 days
| Form 4 transaction type | Transactions | Shares | Total value |
|---|---|---|---|
| Grant or award | 14 | 26,361 |
Dollar totals cover purchases and sales only (codes P and S). Grants, option exercises, gifts and tax withholding are counted in shares, because none of them is a trade at a market price.
MPLX insider transactions (Form 4)
2585 Form 4 filings on record, the earliest from Oct 3, 2024, newest first. Filing history page 3 of 3.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| John P. Surma | Grant or award | Common Units (Limited Partner Interests) | 1,390 | $0.00 | - | |
| Christopher A. Helms | Grant or award | Common Units (Limited Partner Interests) | 1,187 | $0.00 | - | |
 Frank M. Semple | Grant or award | Common Units (Limited Partner Interests) | 2,848 | $0.00 | - | |
| John P. Surma | Grant or award | Common Units (Limited Partner Interests) | 2,848 | $0.00 | - | |
| Christopher A. Helms | Grant or award | Common Units (Limited Partner Interests) | 2,481 | $0.00 | - | |
| Frank M. Semple | Grant or award | Common Units (Limited Partner Interests) | 220.45 | $0.00 | - | |
| John P. Surma | Grant or award | Common Units (Limited Partner Interests) | 220.45 | $0.00 | - | |
| Christopher A. Helms | Grant or award | Common Units (Limited Partner Interests) | 192.03 | $0.00 | - | |
| Shawn M. Lyon - Officer | Tax withholding / forfeiture | Common Units (Limited Partner Interests) | 317 | $48.86 | $15K | |
| Molly R. Benson - Officer | Tax withholding / forfeiture | Common Units (Limited Partner Interests) | 381 | $48.86 | $19K | |
| Michael J. Hennigan - Officer | Tax withholding / forfeiture | Common Units (Limited Partner Interests) | 3,071 | $48.86 | $150K | |
| Gregory Scott Floerke - Officer | Tax withholding / forfeiture | Common Units (Limited Partner Interests) | 333 | $48.86 | $16K | |
| Carl Kristopher Hagedorn - Officer | Open-market sale | Common Units (Limited Partner Interests) | 4,000 | $47.24 | $189K | |
| Christine S. Breves | Grant or award | Common Units (Limited Partner Interests) | 149.79 | $0.00 | - | |
| Garry L. Peiffer | Grant or award | Common Units (Limited Partner Interests) | 1,098 | $0.00 | - | |
| J. Michael Stice | Grant or award | Common Units (Limited Partner Interests) | 892.99 | $0.00 | - | |
| Frank M. Semple | Grant or award | Common Units (Limited Partner Interests) | 981.55 | $0.00 | - | |
| John P. Surma | Grant or award | Common Units (Limited Partner Interests) | 1,409 | $0.00 | - | |
| Christopher A. Helms | Grant or award | Common Units (Limited Partner Interests) | 1,201 | $0.00 | - | |
| Christine S. Breves | Grant or award | Common Units (Limited Partner Interests) | 699.42 | $0.00 | - | |
| Garry L. Peiffer | Grant or award | Common Units (Limited Partner Interests) | 699.42 | $0.00 | - | |
| J. Michael Stice | Grant or award | Common Units (Limited Partner Interests) | 802.93 | $0.00 | - | |
| Frank M. Semple | Grant or award | Common Units (Limited Partner Interests) | 802.93 | $0.00 | - | |
| John P. Surma | Grant or award | Common Units (Limited Partner Interests) | 802.93 | $0.00 | - | |
| Christopher A. Helms | Grant or award | Common Units (Limited Partner Interests) | 699.42 | $0.00 | - |
MPLX insider trading FAQ
What is the latest insider trade for MPLX?
MPLX LP (MPLX) had 14 insider filings in the last 90 days, with the most recent on 2026-08-18. The full record for MPLX runs to 85 Form 4 filings, the earliest from 2024-10-03. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying MPLX stock?
No insider purchases of MPLX were filed in the last 90 days.
How many insiders are selling MPLX stock?
No insider sales of MPLX were filed in the last 90 days. 1 sale is on record for this company.
Where can I see MPLX SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects MPLX Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
More Energy companies with insider activity
Recent insider filings
10The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - Garry L. Peiffer view on EDGAR
- - Ray N. Walker Jr. view on EDGAR
- - John P. Surma view on EDGAR
- - J. Michael Stice view on EDGAR
- - Frank M. Semple view on EDGAR
- - Christopher A. Helms view on EDGAR
- - Christine S. Breves view on EDGAR
- - Ray N. Walker Jr. view on EDGAR
- - John P. Surma view on EDGAR
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Learn more
- What the Form 4 transaction codes mean
- Grants, option exercises, gifts and tax withholding are not trades on the market. The codes say which is which.
- Insider activity in Energy
- Where MPLX's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
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- MPLX on your watchlist
- Every MPLX Form 4 filing on record
- Up to 3 months of MPLX price history
- The daily trading plan of ranked insider buys, on a delay, with the plan archive
