BREVES, CHRISTINE S
Director
- Shares
- 277
- % company
- <0.01%
- Price
- Not reported
- Value
- Not reported
Filed May 15, 2026
Methodology published · Market data, model notes, and corrections process are public · Data policy · Corrections policy
NYSE · ENERGY · Holders
MPLX LP (MPLX) Institutional Ownership & Insider Trading History
Recent insider purchases and sales for MPLX from Form 4 filings. Institutional holdings surface here when ownership sources publish.
Section freshness
Price Jun 24, 4:00 PM EDT · Statements Mar 30, 8:00 PM EDT
Source timingDetailsHide
Data freshness
Prices update fastest. Fundamentals, analyst data, and news update on their own schedules, so check these timestamps before comparing signals.
Price time means the latest available trade or regular-market close. Other times show when that section was checked or published.
PriceLive
Last traded •
Source: Market data provider
Fundamentalsevery 1 hr
Provider checked •
Source: Market data provider
Analystevery 1 hr
Provider checked •
Source: Market data provider
Newsevery 30 min
Latest item •
Source: Market data provider
Ownership read
MPLX insider sentiment: Mixed, buy-heavy.
41 sales and 79 purchases appear in the recent Form 4 filings. Use the filters below to separate real buying and selling from option exercises, gifts, awards, and tax withholding.
Insider flow
MPLX
Purchases286.81K
Sales83.86K
Directional bars ignore awards, gifts, conversions, and tax withholding rows.
Top holder
—
Institutional data pending
Insider stance
Mixed, buy-heavy
$4.65M sold / $211.00K bought
Latest filing
May 15, 2026
Most recent holder or insider filing date
Filings shown
120
0 holder / 120 insider
- Holder rows
- Pending
- Market data source
- Latest filing
- May 15, 2026
- Most recent holder or insider filing date
- Increased / initiated
- Pending
- 0 decreased
- Insider rows
- 120
- 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.
HELMS, CHRISTOPHER A
Director
- Shares
- 1.42K
- % company
- <0.01%
- Price
- Not reported
- Value
- Not reported
Filed May 15, 2026
SEMPLE, FRANK M
Director
- Shares
- 1.19K
- % company
- <0.01%
- Price
- Not reported
- Value
- Not reported
Filed May 15, 2026
STICE, J MICHAEL
Director
- Shares
- 1.10K
- % company
- <0.01%
- Price
- Not reported
- Value
- Not reported
Filed May 15, 2026
PEIFFER, GARRY L.
Director
- Shares
- 1.30K
- % company
- <0.01%
- Price
- Not reported
- Value
- Not reported
Filed May 15, 2026
WALKER, RAY N JR
Director
- Shares
- 78
- % company
- <0.01%
- Price
- Not reported
- Value
- Not reported
Filed May 15, 2026
SURMA, JOHN P
Director
- Shares
- 1.66K
- % company
- <0.01%
- Price
- Not reported
- Value
- Not reported
Filed May 15, 2026
PEIFFER, GARRY L.
Director
- Shares
- 2.25K
- % company
- <0.01%
- Price
- Not reported
- Value
- Not reported
Filed Apr 30, 2026
WALKER, RAY N JR
Director
- Shares
- 2.25K
- % company
- <0.01%
- Price
- Not reported
- Value
- Not reported
Filed Apr 30, 2026
SURMA, JOHN P
Director
- Shares
- 2.58K
- % company
- <0.01%
- Price
- Not reported
- Value
- Not reported
Filed Apr 30, 2026
STICE, J MICHAEL
Director
- Shares
- 2.58K
- % company
- <0.01%
- Price
- Not reported
- Value
- Not reported
Filed Apr 30, 2026
BREVES, CHRISTINE S
Director
- Shares
- 2.25K
- % company
- <0.01%
- Price
- Not reported
- Value
- Not reported
Filed Apr 30, 2026
| # | Insider | % company | Action | Shares | Price | Value | Filing date |
|---|---|---|---|---|---|---|---|
| 1 | BREVES, CHRISTINE S Director | <0.01% | PurchaseOpen-market or direct purchase reported on Form 4. | 277 | Not reported | Not reported | May 15, 2026 |
| 2 | HELMS, CHRISTOPHER A Director | <0.01% | PurchaseOpen-market or direct purchase reported on Form 4. | 1.42K | Not reported | Not reported | May 15, 2026 |
| 3 | SEMPLE, FRANK M Director | <0.01% | PurchaseOpen-market or direct purchase reported on Form 4. | 1.19K | Not reported | Not reported | May 15, 2026 |
| 4 | STICE, J MICHAEL Director | <0.01% | PurchaseOpen-market or direct purchase reported on Form 4. | 1.10K | Not reported | Not reported | May 15, 2026 |
| 5 | PEIFFER, GARRY L. Director | <0.01% | PurchaseOpen-market or direct purchase reported on Form 4. | 1.30K | Not reported | Not reported | May 15, 2026 |
| 6 | WALKER, RAY N JR Director | <0.01% | PurchaseOpen-market or direct purchase reported on Form 4. | 78 | Not reported | Not reported | May 15, 2026 |
| 7 | SURMA, JOHN P Director | <0.01% | PurchaseOpen-market or direct purchase reported on Form 4. | 1.66K | Not reported | Not reported | May 15, 2026 |
| 8 | PEIFFER, GARRY L. Director | <0.01% | PurchaseOpen-market or direct purchase reported on Form 4. | 2.25K | Not reported | Not reported | Apr 30, 2026 |
| 9 | WALKER, RAY N JR Director | <0.01% | PurchaseOpen-market or direct purchase reported on Form 4. | 2.25K | Not reported | Not reported | Apr 30, 2026 |
| 10 | SURMA, JOHN P Director | <0.01% | PurchaseOpen-market or direct purchase reported on Form 4. | 2.58K | Not reported | Not reported | Apr 30, 2026 |
| 11 | STICE, J MICHAEL Director | <0.01% | PurchaseOpen-market or direct purchase reported on Form 4. | 2.58K | Not reported | Not reported | Apr 30, 2026 |
| 12 | BREVES, CHRISTINE S Director | <0.01% | PurchaseOpen-market or direct purchase reported on Form 4. | 2.25K | Not reported | Not reported | Apr 30, 2026 |
Showing 12 of 120 matching Form 4 rows. Percent of company uses current shares outstanding when available.Load more insiders
Frequently asked
Common questions.
Who are the largest MPLX shareholders?
MPLX LP (MPLX) institutional holders are ranked by reported share count when ownership data publishes filing rows.
What is institutional ownership of MPLX?
MPLX LP (MPLX) institutional ownership appears when filing-based market data returns holder rows. TECHi does not fill unavailable ownership fields with placeholder shareholders.
Where can I see MPLX LP insider transactions?
MPLX LP (MPLX) has 120 Form 4 insider transactions on file, most recently on May 15, 2026, separated into purchases, sales, option exercises, awards, gifts, and tax withholding so administrative transactions are distinguished from open-market trades.
Are MPLX insiders buying or selling?
Recent MPLX insider activity reads Mixed, buy-heavy: 41 sales and 79 purchases. Awards, gifts, conversions, and tax withholding are listed separately because they do not carry the same signal as open-market trades.
Who is the most active MPLX insider?
MANNEN, MARYANN T. is the most active MPLX insider by absolute share movement, with 125,001 shares moving across the filing history. Review the action labels before treating that activity as buying or selling.