MPLX insider trading — Mplx LP
No open-market insider purchases or sales were filed for Mplx LP (MPLX) in the last 90 days. Other insider transactions — such as stock awards, option exercises or tax withholding — are listed below.
Updated Oct 16, 2026.
Recent MPLX insider transactions
Every Form 4 filed by Mplx LP officers, directors and 10% owners in the last 90 days, newest first. P = open-market purchase, S = open-market sale; other codes are awards, option exercises, tax withholding or gifts.
| Trade date | Insider | Role | Type | Ownership | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|---|
| Aug 14, 2026 | Peiffer Garry L. | Director | A · Grant/award | Direct | 1,232 | — | — | Form 4 |
| Aug 14, 2026 | Walker Ray N Jr | Director | A · Grant/award | Direct | 82 | — | — | Form 4 |
| Aug 14, 2026 | Surma John P | Director | A · Grant/award | Direct | 1,563 | — | — | Form 4 |
| Aug 14, 2026 | Stice J Michael | Director | A · Grant/award | Direct | 983 | — | — | Form 4 |
| Aug 14, 2026 | Semple Frank M | Director | A · Grant/award | Direct | 1,073 | — | — | Form 4 |
| Aug 14, 2026 | Helms Christopher A | Director | A · Grant/award | Direct | 1,337 | — | — | Form 4 |
| Aug 14, 2026 | Breves Christine S | Director | A · Grant/award | Direct | 219 | — | — | Form 4 |
MPLX insider trading FAQ
Are insiders buying MPLX stock?
Not on the open market. In the last 90 days, Mplx LP insiders made no open-market purchases, and no open-market sales. Purchases with the insider's own money are generally seen as a stronger signal than sales, which happen for many reasons (taxes, diversification, planned 10b5-1 sales).
Who are the insiders trading MPLX?
No insider bought or sold on the open market in the last 90 days.
Where does MPLX insider trading data come from?
Every transaction comes from SEC Form 4 filings on EDGAR. Company officers, directors and 10% owners must file a Form 4 within two business days of buying or selling. InsiderBolt reads these filings directly from the SEC.
More stocks with insider activity
Insider trading data is for informational purposes only and is not investment advice. Filings can be amended; always confirm details on SEC EDGAR.