MPLX LP
MPLX, MPLXP · Pipe Lines (No Natural Gas) · 1.01B shares · EDGAR filings ↗
Reference price $52.75 · est. market cap ~$53.5B — last insider purchase, 2025-03-07 (estimated from the dated SEC Form 4 price × shares outstanding — not a live quote)
Grade
A86Scaled, wide-moat midstream MLP with top-decile margins, returns and prodigious free cash flow.
Strengths
- Net margin (100th), OCF margin (100th), ROA (100th) and FCF $4.1B (96.5th) all top-decile
- Fee-based, FERC-regulated pipeline franchise with $4.1B FCF and growing net income (+13.7%)
Risks
- Heavy revenue/customer concentration in sponsor MPC
- Revenue down 6.6% with acquisition-integration risk (Northwind, BANGL)
Notable findings
- Exec changeRecent 8-K item 5.02 8-K ↗
- Strong balance sheetStrong balance sheet — $2.1B cash & investments
Quarterly revenue
Last 4 quarters · from SEC filings.
Key metrics
Operating margin
45.7%
Net margin
38.1%
Return on assets
11.5%
Revenue growth (QoQ)
-6.6%
Net-income growth
13.7%
Current ratio
1.2×
Free cash flow
$4.1B
Cash & investments
$2.1B
Insider transactions · last 18 months
| Date | Insider | Type | Shares | Price |
|---|---|---|---|---|
| 2026-05-15 | SURMA JOHN P | Grant | 1.7K | — |
| 2026-05-15 | STICE J MICHAEL | Grant | 1.1K | — |
| 2026-05-15 | SEMPLE FRANK M | Grant | 1.2K | — |
| 2026-05-15 | Peiffer Garry L. | Grant | 1.3K | — |
| 2026-05-15 | HELMS CHRISTOPHER A | Grant | 1.4K | — |
| 2026-05-15 | Walker Ray N JR | Grant | 78 | — |
| 2026-05-15 | Breves Christine S | Grant | 277 | — |
| 2026-04-30 | Walker Ray N JR | Grant | 2.2K | — |
| 2026-04-30 | SURMA JOHN P | Grant | 2.6K | — |
| 2026-04-30 | STICE J MICHAEL | Grant | 2.6K | — |
| 2026-04-30 | SEMPLE FRANK M | Grant | 2.6K | — |
| 2026-04-30 | Peiffer Garry L. | Grant | 2.2K | — |
| 2026-04-30 | HELMS CHRISTOPHER A | Grant | 2.2K | — |
| 2026-04-30 | Breves Christine S | Grant | 2.2K | — |
| 2026-03-02 | Lyon Shawn M | Tax withheld | 1.0K | $59.22 |
| 2026-03-02 | Benson Molly R | Tax withheld | 614 | $59.22 |
| 2026-03-02 | Benson Molly R | Tax withheld | 1.2K | $59.22 |
| 2026-03-02 | Benson Molly R | Tax withheld | 998 | $59.22 |
| 2026-03-02 | Lyon Shawn M | Tax withheld | 920 | $59.22 |
| 2026-03-02 | Lyon Shawn M | Tax withheld | 798 | $59.22 |
| 2026-03-02 | HAGEDORN CARL KRISTOPHER | Tax withheld | 422 | $59.22 |
| 2026-03-02 | HAGEDORN CARL KRISTOPHER | Tax withheld | 916 | $59.22 |
| 2026-03-02 | HAGEDORN CARL KRISTOPHER | Tax withheld | 663 | $59.22 |
| 2026-03-02 | Mannen Maryann T. | Tax withheld | 3.4K | $59.22 |
| 2026-03-02 | Mannen Maryann T. | Tax withheld | 3.4K | $59.22 |
| 2026-03-02 | Mannen Maryann T. | Tax withheld | 6.4K | $59.22 |
| 2026-03-02 | Floerke Gregory Scott | Tax withheld | 995 | $59.22 |
| 2026-03-02 | Floerke Gregory Scott | Tax withheld | 1.1K | $59.22 |
| 2026-03-02 | Floerke Gregory Scott | Tax withheld | 797 | $59.22 |
| 2026-03-01 | Lyon Shawn M | Grant | 6.0K | — |
| 2026-03-01 | HAGEDORN CARL KRISTOPHER | Grant | 4.9K | — |
| 2026-03-01 | Khoury Maria A | Grant | 8.5K | — |
| 2026-03-01 | Benson Molly R | Grant | 8.8K | — |
| 2026-03-01 | Floerke Gregory Scott | Grant | 6.0K | — |
| 2026-03-01 | Mannen Maryann T. | Grant | 53K | — |
| 2026-02-17 | STICE J MICHAEL | Grant | 982 | — |
| 2026-02-17 | Walker Ray N JR | Grant | 32 | — |
| 2026-02-17 | SURMA JOHN P | Grant | 1.5K | — |
| 2026-02-17 | SEMPLE FRANK M | Grant | 1.1K | — |
| 2026-02-17 | Peiffer Garry L. | Grant | 1.2K | — |
| 2026-02-17 | HELMS CHRISTOPHER A | Grant | 1.3K | — |
| 2026-02-17 | Breves Christine S | Grant | 218 | — |
| 2025-12-12 | Hennigan Michael J | Tax withheld | 1.3K | $54.85 |
| 2025-12-12 | Lyon Shawn M | Tax withheld | 245 | $54.85 |
| 2025-12-12 | Benson Molly R | Tax withheld | 306 | $54.85 |
| 2025-12-12 | Floerke Gregory Scott | Tax withheld | 242 | $54.85 |
| 2025-11-14 | STICE J MICHAEL | Grant | 1.0K | — |
| 2025-11-14 | Peiffer Garry L. | Grant | 1.2K | — |
| 2025-11-14 | HELMS CHRISTOPHER A | Grant | 1.4K | — |
| 2025-11-14 | Breves Christine S | Grant | 230 | — |
| 2025-11-14 | Walker Ray N JR | Grant | 34 | — |
| 2025-11-14 | SURMA JOHN P | Grant | 1.6K | — |
| 2025-11-14 | SEMPLE FRANK M | Grant | 1.1K | — |
| 2025-08-25 | Walker Ray N JR | Grant | 1.7K | — |
| 2025-08-15 | HELMS CHRISTOPHER A | Grant | 1.3K | — |
| 2025-08-15 | Breves Christine S | Grant | 214 | — |
| 2025-08-15 | Peiffer Garry L. | Grant | 1.2K | — |
| 2025-08-15 | STICE J MICHAEL | Grant | 962 | — |
| 2025-08-15 | SEMPLE FRANK M | Grant | 1.1K | — |
| 2025-08-15 | SURMA JOHN P | Grant | 1.5K | — |
| 2025-05-16 | SURMA JOHN P | Grant | 1.4K | — |
| 2025-05-16 | STICE J MICHAEL | Grant | 907 | — |
| 2025-05-16 | SEMPLE FRANK M | Grant | 990 | — |
| 2025-05-16 | Peiffer Garry L. | Grant | 1.1K | — |
| 2025-05-16 | HELMS CHRISTOPHER A | Grant | 1.2K | — |
| 2025-05-16 | Breves Christine S | Grant | 201 | — |
| 2025-05-01 | SURMA JOHN P | Grant | 2.8K | — |
| 2025-05-01 | STICE J MICHAEL | Grant | 2.8K | — |
| 2025-05-01 | SEMPLE FRANK M | Grant | 2.8K | — |
| 2025-05-01 | Peiffer Garry L. | Grant | 2.5K | — |
| 2025-05-01 | HELMS CHRISTOPHER A | Grant | 2.5K | — |
| 2025-05-01 | Breves Christine S | Grant | 2.5K | — |
| 2025-04-01 | SURMA JOHN P | Grant | 220 | — |
| 2025-04-01 | SEMPLE FRANK M | Grant | 220 | — |
| 2025-04-01 | STICE J MICHAEL | Grant | 220 | — |
| 2025-04-01 | Peiffer Garry L. | Grant | 192 | — |
| 2025-04-01 | HELMS CHRISTOPHER A | Grant | 192 | — |
| 2025-04-01 | Breves Christine S | Grant | 192 | — |
| 2025-03-07 | Lyon Shawn M | Buy | 4.0K | $52.75 |
| 2025-03-03 | HAGEDORN CARL KRISTOPHER | Tax withheld | 422 | $54.34 |
| 2025-03-03 | Quaid John J | Tax withheld | 1.3K | $54.34 |
| 2025-03-03 | Quaid John J | Tax withheld | 1.3K | $54.34 |
| 2025-03-03 | Quaid John J | Tax withheld | 2.4K | $54.34 |
| 2025-03-03 | Mannen Maryann T. | Tax withheld | 3.3K | $54.34 |
| 2025-03-03 | Mannen Maryann T. | Tax withheld | 3.4K | $54.34 |
| 2025-03-03 | Mannen Maryann T. | Tax withheld | 3.4K | $54.34 |
| 2025-03-03 | Lyon Shawn M | Tax withheld | 936 | $54.34 |
| 2025-03-03 | Lyon Shawn M | Tax withheld | 1.1K | $54.34 |
| 2025-03-03 | Hennigan Michael J | Tax withheld | 9.9K | $54.34 |
| 2025-03-03 | Hennigan Michael J | Tax withheld | 10K | $54.34 |
| 2025-03-03 | Hennigan Michael J | Tax withheld | 10K | $54.34 |
| 2025-03-03 | HAGEDORN CARL KRISTOPHER | Tax withheld | 448 | $54.34 |
| 2025-03-03 | HAGEDORN CARL KRISTOPHER | Tax withheld | 910 | $54.34 |
| 2025-03-03 | Floerke Gregory Scott | Tax withheld | 1.1K | $54.34 |
| 2025-03-03 | Floerke Gregory Scott | Tax withheld | 995 | $54.34 |
| 2025-03-03 | Floerke Gregory Scott | Tax withheld | 1.1K | $54.34 |
| 2025-03-03 | Benson Molly R | Tax withheld | 580 | $54.34 |
| 2025-03-03 | Benson Molly R | Tax withheld | 625 | $54.34 |
| 2025-03-03 | Benson Molly R | Tax withheld | 1.3K | $54.34 |
| 2025-03-01 | Lyon Shawn M | Grant | 6.0K | — |
| 2025-03-01 | Floerke Gregory Scott | Grant | 6.0K | — |
| 2025-03-01 | Quaid John J | Grant | 13K | — |
| 2025-03-01 | Mannen Maryann T. | Grant | 49K | — |
| 2025-03-01 | Benson Molly R | Grant | 7.5K | — |
| 2025-03-01 | HAGEDORN CARL KRISTOPHER | Grant | 4.5K | — |
| 2025-03-01 | Hennigan Michael J | Grant | 33K | — |
| 2025-02-14 | SURMA JOHN P | Grant | 1.3K | — |
| 2025-02-14 | STICE J MICHAEL | Grant | 809 | — |
| 2025-02-14 | SEMPLE FRANK M | Grant | 888 | — |
| 2025-02-14 | Peiffer Garry L. | Grant | 990 | — |
| 2025-02-14 | HELMS CHRISTOPHER A | Grant | 1.1K | — |
| 2025-02-14 | Breves Christine S | Grant | 145 | — |
| 2025-01-02 | SEMPLE FRANK M | Grant | 738 | — |
| 2025-01-02 | Breves Christine S | Grant | 642 | — |
| 2025-01-02 | SURMA JOHN P | Grant | 738 | — |
| 2025-01-02 | HELMS CHRISTOPHER A | Grant | 642 | — |
| 2025-01-02 | Peiffer Garry L. | Grant | 642 | — |
| 2025-01-02 | STICE J MICHAEL | Grant | 738 | — |
All non-derivative Form 4 activity (SEC), newest first.
Notable events (8-K)
| Date | Items | |
|---|---|---|
| 2026-05-05 | ResultsExhibits | filing ↗ |
| 2026-04-13 | Material agreement1.02ResultsDebt obligationExhibits | filing ↗ |
| 2026-03-18 | Exec/director change | filing ↗ |
| 2026-02-12 | OtherExhibits | filing ↗ |
| 2026-02-03 | ResultsExhibits | filing ↗ |
| 2025-12-18 | Exec/director change | filing ↗ |
| 2025-11-04 | ResultsExhibits | filing ↗ |
| 2025-11-04 | Exec/director changeOtherExhibits | filing ↗ |
Recent filings
| Form | Filed | Period | Accession |
|---|---|---|---|
| 8-K | 2026-05-05 | 2026-05-05 | 0001552000-26-000023 ↗ |
| 10-Q | 2026-05-05 | 2026-03-31 | 0001552000-26-000025 ↗ |
| 8-K | 2026-04-13 | 2026-04-07 | 0001552000-26-000017 ↗ |
| 8-K | 2026-03-18 | 2026-03-16 | 0001552000-26-000012 ↗ |
| 10-K | 2026-02-26 | 2025-12-31 | 0001552000-26-000009 ↗ |
| 8-K | 2026-02-12 | 2026-02-12 | 0001193125-26-048352 ↗ |
| 8-K | 2026-02-03 | 2026-02-03 | 0001552000-26-000004 ↗ |
| 8-K | 2025-12-18 | 2025-12-12 | 0001552000-25-000044 ↗ |
| 8-K | 2025-11-04 | 2025-10-29 | 0001552000-25-000040 ↗ |
| 8-K | 2025-11-04 | 2025-11-04 | 0001552000-25-000035 ↗ |
| 10-Q | 2025-11-04 | 2025-09-30 | 0001552000-25-000036 ↗ |
| 8-K | 2025-08-25 | 2025-08-25 | 0001552000-25-000030 ↗ |