Breves Christine S
- Shares
- 14.36K
- % company
- <0.01%
Filed May 15, 2026
Methodology published · Market data, model notes, and corrections process are public · Data policy · Corrections policy
NYSE · Technology · Holders
MPLX LP (MPLX) Insider Trading History
Recent Form 4 insider activity for MPLX, with filters for buys, sales, option exercises, gifts, and tax withholding.
Section freshness
Price Aug 19, 11:58 AM EDT · Statements Jun 29, 8:00 PM EDT
Ownership read
MPLX insider sentiment: Administrative only.
The recent Form 4 filings are mostly awards, gifts, option exercises, conversions, or administrative transactions rather than open-market buys and sells. Use the filters below to separate open-market activity from option exercises, gifts, awards, and tax withholding.
Insider stance
Administrative only
Based on recent Form 4 action codes
Latest filing
May 15, 2026
Most recent holder or insider filing date
Filings shown
61
61 insider
- Latest filing
- May 15, 2026
- Most recent holder or insider filing date
- Insider rows
- 61
- Market data source
Recent insider transactions
MPLX LP (MPLX) Form 4 filings
Action codes are translated so open-market buys and sales are separate from awards, gifts, conversions, and tax withholding.
Peiffer Garry L.
- Shares
- 67.62K
- % company
- <0.01%
Filed May 15, 2026
STICE J MICHAEL
- Shares
- 56.97K
- % company
- <0.01%
Filed May 15, 2026
Walker Ray N JR
- Shares
- 4.07K
- % company
- <0.01%
Filed May 15, 2026
SEMPLE FRANK M
- Shares
- 61.95K
- % company
- <0.01%
Filed May 15, 2026
SURMA JOHN P
- Shares
- 93.43K
- % company
- <0.01%
Filed May 15, 2026
HELMS CHRISTOPHER A
- Shares
- 84.41K
- % company
- <0.01%
Filed May 15, 2026
Breves Christine S
- Shares
- 14.53K
- % company
- <0.01%
Filed Apr 30, 2026
Peiffer Garry L.
- Shares
- 66.77K
- % company
- <0.01%
Filed Apr 30, 2026
STICE J MICHAEL
- Shares
- 56.32K
- % company
- <0.01%
Filed Apr 30, 2026
Walker Ray N JR
- Shares
- 4.44K
- % company
- <0.01%
Filed Apr 30, 2026
SEMPLE FRANK M
- Shares
- 61.20K
- % company
- <0.01%
Filed Apr 30, 2026
| # | Insider | % company | Action | Shares | Filing date |
|---|---|---|---|---|---|
| 1 | Breves Christine S | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 14.36K | May 15, 2026 |
| 2 | Peiffer Garry L. | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 67.62K | May 15, 2026 |
| 3 | STICE J MICHAEL | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 56.97K | May 15, 2026 |
| 4 | Walker Ray N JR | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 4.07K | May 15, 2026 |
| 5 | SEMPLE FRANK M | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 61.95K | May 15, 2026 |
| 6 | SURMA JOHN P | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 93.43K | May 15, 2026 |
| 7 | HELMS CHRISTOPHER A | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 84.41K | May 15, 2026 |
| 8 | Breves Christine S | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 14.53K | Apr 30, 2026 |
| 9 | Peiffer Garry L. | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 66.77K | Apr 30, 2026 |
| 10 | STICE J MICHAEL | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 56.32K | Apr 30, 2026 |
| 11 | Walker Ray N JR | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 4.44K | Apr 30, 2026 |
| 12 | SEMPLE FRANK M | <0.01% | Award / grantAward, grant, or acquisition under an equity compensation plan. | 61.20K | Apr 30, 2026 |
Showing 12 of 61 matching Form 4 rows. Percent of company uses current shares outstanding.
Frequently asked
Common questions.
Who is the most active reported MPLX insider?
Mannen Maryann T. has the largest absolute share movement in the displayed MPLX filing rows, totaling 691,278 shares. The action labels provide the transaction context.