MARC GABELLI
CIK 1233348 · Co-Chief Executive Officer · last filed 2026-04-28
MARC GABELLI is a Co-Chief Executive Officer who has filed 47 SEC Form 4 insider transactions across 5 companies since 2008. The most recent filing shows the insider exercised options on $193.3K of MPTI on Apr 28, 2026. Across all open-market trades the lifetime net is −$12.9M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $15.6M 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.
$15.62M
5
47
-$12.95M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| MPTI | Director | 114,161 | $82.24 | $9.39M | -$13.02M | 9 | 2026-04-28 |
| LGL | Co-Chief Executive Officer | 910,684 | $6.84 | $6.23M | $69.7K | 30 | 2026-03-30 |
| Associated Capital Group, Inc. (AC) Delisted | Director | 20,766 | $30.92 | $642.1K | $0 | 4 | 2024-08-13 |
| IronNet, Inc. (IRNT.WS) Delisted | 566,000 | $0.01 | $4.0K | $0 | 1 | 2021-08-30 | |
| GAMCO INVESTORS, INC. ET AL (GBL) Delisted | Director | 20,766 | $14.78 | $306.9K | $0 | 3 | 2015-08-27 |
Recent Filings
47 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-04-28 | MPTI | Exer (X) | +3,276 | $193.3K | EDGAR |
| 2026-03-30 | LGL | Grant (A) | +2,067 | $0 | EDGAR |
| 2026-03-23 | MPTI | Grant (A) | +242 | $0 | EDGAR |
| 2026-01-21 | LGL | Mixed | +58,552 | $40.6K | EDGAR |
| 2025-03-31 | MPTI | Grant (A) | +402 | $0 | EDGAR |
| 2025-03-31 | LGL | Grant (A) | +2,308 | $0 | EDGAR |
| 2024-08-13 | Associated Capital Group, Inc. (AC) Delisted | Grant (A) | — | $0 | EDGAR |
| 2024-03-25 | MPTI | Grant (A) | +364 | $15.0K | EDGAR |
| 2024-01-16 | MPTI | Sell (S) | −80,194 | -$3.02M | EDGAR |
| 2024-01-04 | MPTI | Sell (S) | −88,402 | -$3.48M | 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.