FRANK M SEMPLE
CIK 1270065 · Chairman, President & CEO · last filed 2026-05-19
FRANK M SEMPLE is a Chairman, President & CEO who has filed 144 SEC Form 4 insider transactions across 7 companies since 2007. The most recent filing, for MPLX, was dated May 19, 2026. Across all open-market trades the lifetime net is −$7.1M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $10.2M 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.
$10.18M
7
144
-$7.13M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| MPLX | Director | 110,722 | $56.87 | $6.30M | -$7.33M | 83 | 2026-05-19 |
| MPC | Director | 14,719 | $263.58 | $3.88M | $0 | 27 | 2026-05-04 |
| Hyliion Holdings Corp. (HYLN.WS) Delisted | Director | 40,000 | — | — | $0 | 1 | 2020-10-05 |
| ANDEAVOR LOGISTICS LP (ANDX) Delisted | Director | 2,359 | — | — | $0 | 6 | 2019-07-03 |
| Hyliion Holdings Corp. (SHLL.U) Delisted | Director | — | — | — | $0 | 1 | 2019-03-06 |
| MARKWEST ENERGY PARTNERS L P (MWE) Delisted | Chairman, President & CEO | 363,069 | — | — | $204.0K | 21 | 2015-02-03 |
| MARKWEST HYDROCARBON INC (MWP) Delisted | President, CEO | 40,556 | — | — | $0 | 2 | 2008-01-09 |
Recent Filings
144 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-05-19 | MPLX | Grant (A) | +1,194 | $0 | EDGAR |
| 2026-05-04 | MPC | Grant (A) | +727 | $0 | EDGAR |
| 2026-05-04 | MPLX | Grant (A) | +2,579 | $0 | EDGAR |
| 2026-02-19 | MPLX | Grant (A) | +1,071 | $0 | EDGAR |
| 2025-11-18 | MPLX | Grant (A) | +1,132 | $0 | EDGAR |
| 2025-08-19 | MPLX | Grant (A) | +1,050 | $0 | EDGAR |
| 2025-05-20 | MPLX | Grant (A) | +990 | $0 | EDGAR |
| 2025-05-05 | MPC | Grant (A) | +1,275 | $0 | EDGAR |
| 2025-05-05 | MPLX | Grant (A) | +2,848 | $0 | EDGAR |
| 2025-04-03 | MPC | Grant (A) | +93 | $0 | EDGAR |