Maryann T. Mannen
CIK 1408964 · Chairman, President & CEO · last filed 2026-08-04
Maryann T. Mannen is a Chairman, President & CEO who has filed 293 SEC Form 4 insider transactions across 5 companies since 2007. The most recent filing shows the insider had shares withheld for taxes covering $283.1K of MPC on Aug 4, 2026. Across all open-market trades the lifetime net is −$2.2M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $86.0M across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$86.01M
5
293
-$2.24M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| MPC | Chairman, President & CEO | 110,939 | $320.32 | $35.54M | $0 | 13 | 2026-08-04 |
| PRU | Director | — | $122.11 | — | $0 | 2 | 2026-06-15 |
| OC | Director | 27,410 | $153.80 | $4.22M | $0 | 91 | 2026-04-13 |
| MPLX | Chairman, President & CEO | 171,868 | $58.70 | $10.09M | $0 | 6 | 2026-03-03 |
| FTI | EVP & Chief Financial Officer | 487,881 | $74.13 | $36.17M | -$2.24M | 181 | 2020-03-11 |
Recent Filings
293 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-08-04 | MPC | Tax (F) | −908 | -$283.1K | EDGAR |
| 2026-06-15 | PRU | Grant (A) | — | $0 | EDGAR |
| 2026-05-14 | PRU | Grant (A) | — | $0 | EDGAR |
| 2026-04-13 | OC | Grant (A) | +163 | $18.7K | EDGAR |
| 2026-03-03 | MPC | Mixed | +11,300 | -$818.2K | EDGAR |
| 2026-03-03 | OC | Grant (A) | +412 | $50.3K | EDGAR |
| 2026-03-03 | MPLX | Mixed | +39,597 | -$782.9K | EDGAR |
| 2026-01-23 | OC | Grant (A) | +146 | $18.3K | EDGAR |
| 2025-11-10 | OC | Grant (A) | +597 | $62.4K | EDGAR |
| 2025-08-12 | OC | Grant (A) | +318 | $45.8K | EDGAR |
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.