JOHN C MOLLENKOPF
CIK 1235082 · Exec VP and COO · last filed 2026-04-14
"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.
Loading insider history…
Disclosed Exposure
$25.78M
Companies
4
Total Filings
69
Lifetime Open-Market Net
-$3.78M
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 |
|---|---|---|---|---|---|---|---|
| AM | Director | 104,659 | $21.67 | $2.27M | $0 | 35 | 2026-04-14 |
| MPLX | Exec VP and COO | 413,452 | $56.87 | $23.51M | $0 | 2 | 2015-12-22 |
| MARKWEST ENERGY PARTNERS L P (MWE) Delisted | EVP, Chief Operating Officer | 270,444 | — | — | -$3.78M | 27 | 2015-12-03 |
| MARKWEST HYDROCARBON INC (MWP) Delisted | SVP, Chief Operations Officer | 5,267 | — | — | $0 | 2 | 2008-01-04 |
Recent Filings · Page 3 of 7
69 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2021-04-14 | AM | Grant (A) | +3,911 | $0 | EDGAR |
| 2021-01-12 | AM | Grant (A) | +9,503 | $0 | EDGAR |
| 2020-07-14 | AM | Grant (A) | +12,126 | $0 | EDGAR |
| 2020-01-14 | AM | Grant (A) | +4,623 | $0 | EDGAR |
| 2019-10-15 | AM | Grant (A) | +4,514 | $0 | EDGAR |
| 2019-07-12 | AM | Grant (A) | +2,688 | $0 | EDGAR |
| 2019-04-12 | AM | Grant (A) | +2,365 | $0 | EDGAR |
| 2019-03-14 | AM | Grant (A) | +11,478 | $0 | EDGAR |
| 2019-03-14 | — | Disp (D) | −6,065 | $0 | |
| 2019-01-04 | AM | Grant (A) | +1,137 | $0 | 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.