FRANK M SEMPLE
CIK 1270065 · Chairman, President & CEO · last filed 2026-05-19
"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.
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Disclosed Exposure
$10.18M
Companies
7
Total Filings
144
Lifetime Open-Market Net
-$7.13M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| 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 · Page 13 of 15
144 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2015-02-03 | MARKWEST ENERGY PARTNERS L P (MWE) Delisted | Tax (F) | −32,450 | -$1.91M | EDGAR |
| 2015-01-23 | MARKWEST ENERGY PARTNERS L P (MWE) Delisted | Grant (A) | +54,160 | $0 | EDGAR |
| 2014-02-04 | MARKWEST ENERGY PARTNERS L P (MWE) Delisted | Tax (F) | −36,696 | -$2.58M | EDGAR |
| 2014-01-24 | MARKWEST ENERGY PARTNERS L P (MWE) Delisted | Grant (A) | +32,172 | $0 | EDGAR |
| 2013-02-04 | MARKWEST ENERGY PARTNERS L P (MWE) Delisted | Tax (F) | −36,512 | -$2.02M | EDGAR |
| 2013-01-25 | MARKWEST ENERGY PARTNERS L P (MWE) Delisted | Mixed | +47,008 | $0 | EDGAR |
| 2012-02-02 | MARKWEST ENERGY PARTNERS L P (MWE) Delisted | Tax (F) | −23,621 | -$1.37M | EDGAR |
| 2012-01-30 | MARKWEST ENERGY PARTNERS L P (MWE) Delisted | Grant (A) | +108,765 | $0 | EDGAR |
| 2011-05-17 | MARKWEST ENERGY PARTNERS L P (MWE) Delisted | Buy (P) | +1,160 | $50.1K | EDGAR |
| 2011-02-02 | MARKWEST ENERGY PARTNERS L P (MWE) Delisted | Tax (F) | −25,570 | -$1.11M | EDGAR |
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.