MPLX Lp (MPLX) Insider Trading
Over the last 6 months, 453 institutions increased and 341 reduced their position (13F).
Insider Activity
Sentiment
50/100
Buys (3m)
0
Sells (3m)
0
Net (3m)
$0
Insider trades by month Buys Sells
Nov
Mar
Context3-month price +7.4%Institutions accumulating (13F)
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| Aug 18, 2026 | Peiffer Garry L.director | Grant | 1,232 | — |
| Aug 18, 2026 | SEMPLE FRANK Mdirector | Grant | 1,073 | — |
| Aug 18, 2026 | STICE J MICHAELdirector | Grant | 983 | — |
| Aug 18, 2026 | SURMA JOHN Pdirector | Grant | 1,563 | — |
| Aug 18, 2026 | Breves Christine Sdirector | Grant | 219 | — |
| Aug 18, 2026 | Walker Ray N JRdirector | Grant | 82 | — |
| Aug 18, 2026 | HELMS CHRISTOPHER Adirector | Grant | 1,337 | — |
| Aug 5, 2026 | HELMS CHRISTOPHER Adirector | Grant | 2,696 | — |
| Aug 5, 2026 | Walker Ray N JRdirector | Grant | 2,696 | — |
| Aug 5, 2026 | STICE J MICHAELdirector | Grant | 3,029 | — |
| Aug 5, 2026 | Breves Christine Sdirector | Grant | 2,696 | — |
| Aug 5, 2026 | Peiffer Garry L.director | Grant | 2,696 | — |
| Aug 5, 2026 | SEMPLE FRANK Mdirector | Grant | 3,029 | — |
| Aug 5, 2026 | SURMA JOHN Pdirector | Grant | 3,029 | — |
| May 19, 2026 | Breves Christine Sdirector | Grant | 277 | — |
| May 19, 2026 | Walker Ray N JRdirector | Grant | 78 | — |
| May 19, 2026 | SEMPLE FRANK Mdirector | Grant | 1,194 | — |
| May 19, 2026 | SURMA JOHN Pdirector | Grant | 1,656 | — |
| May 19, 2026 | HELMS CHRISTOPHER Adirector | Grant | 1,415 | — |
| May 19, 2026 | STICE J MICHAELdirector | Grant | 1,098 | — |
| May 19, 2026 | Peiffer Garry L.director | Grant | 1,304 | — |
| May 4, 2026 | Peiffer Garry L.director | Grant | 2,247 | — |
| May 4, 2026 | SEMPLE FRANK Mdirector | Grant | 2,580 | — |
| May 4, 2026 | SURMA JOHN Pdirector | Grant | 2,580 | — |
| May 4, 2026 | HELMS CHRISTOPHER Adirector | Grant | 2,247 | — |
| May 4, 2026 | STICE J MICHAELdirector | Grant | 2,580 | — |
| May 4, 2026 | Walker Ray N JRdirector | Grant | 2,247 | — |
| May 4, 2026 | Breves Christine Sdirector | Grant | 2,247 | — |
| Mar 3, 2026 | Floerke Gregory Scottofficer: Exec. VP and COO | Tax | 797 | $59.22 |
| Mar 3, 2026 | Lyon Shawn Mofficer: Senior VP, Log. & Storage | Tax | 1,033 | $59.22 |
Source: MPLX SEC Form 4 filings, latest Aug 18, 2026. For informational purposes only — not investment advice.
Institutional activity (13F)
How institutions changed their MPLX positions over the last 6 months (SEC Form 13F).
Increased
453
New positions
143
Reduced
341
Sold out
64
Largest moves
| Institution | Action | Shares | Filed |
|---|---|---|---|
| ALPS ADVISORS INC | Increased | 28.6M | Jul 29, 2026 |
| ALPS ADVISORS INC | Increased | 27.1M | May 8, 2026 |
| Invesco Ltd. | Increased | 18.3M | Aug 14, 2026 |
| INVESCO LTD. | Increased | 18.3M | May 12, 2026 |
| BLACKSTONE INC. | Reduced | 15.4M | May 15, 2026 |
| TORTOISE CAPITAL ADVISORS, L.L.C. | Reduced | 13.3M | May 15, 2026 |
| Blackstone Inc. | Reduced | 13.0M | Aug 14, 2026 |
| GOLDMAN SACHS GROUP INC | Reduced | 12.5M | May 15, 2026 |
| GOLDMAN SACHS GROUP INC | Reduced | 12.5M | Mar 25, 2026 |
| GOLDMAN SACHS GROUP INC | Reduced | 11.3M | Aug 14, 2026 |
| TORTOISE CAPITAL ADVISORS, L.L.C. | Reduced | 10.5M | Aug 14, 2026 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | Increased | 8.0M | Aug 14, 2026 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS LTD. | Increased | 7.3M | May 15, 2026 |
| KAYNE ANDERSON CAPITAL ADVISORS LP | Reduced | 6.8M | May 11, 2026 |
| KAYNE ANDERSON CAPITAL ADVISORS LP | Reduced | 5.9M | Aug 11, 2026 |
Source: SEC Form 13F filings. For informational purposes only — not investment advice.