JOHN C MOLLENKOPF
CIK 1235082 · Exec VP and COO · last filed 2026-04-14
JOHN C MOLLENKOPF is an Exec VP and COO who has filed 69 SEC Form 4 insider transactions across 4 companies since 2007. The most recent filing, for AM, was dated Apr 14, 2026. Across all open-market trades the lifetime net is −$3.8M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $25.8M 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.
$25.78M
4
69
-$3.78M
Holdings By Company
| 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
69 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-04-14 | AM | Grant (A) | +1,617 | $0 | EDGAR |
| 2026-01-12 | AM | Grant (A) | +2,058 | $0 | EDGAR |
| 2025-10-14 | AM | Grant (A) | +1,935 | $0 | EDGAR |
| 2025-07-14 | AM | Grant (A) | +2,042 | $0 | EDGAR |
| 2025-04-14 | AM | Grant (A) | +2,243 | $0 | EDGAR |
| 2025-01-13 | AM | Grant (A) | +2,302 | $0 | EDGAR |
| 2024-10-15 | AM | Grant (A) | +2,308 | $0 | EDGAR |
| 2024-07-11 | AM | Grant (A) | +2,415 | $0 | EDGAR |
| 2024-04-11 | AM | Grant (A) | +2,517 | $0 | EDGAR |
| 2024-01-12 | AM | Grant (A) | +2 | $0 | EDGAR |