Mario J. Gabelli - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Mario J. Gabelli has filed 2 SEC Form 4 filings across 1 company in the last 90 days - active on both sides. Lifetime open-market purchases: $75.99M. Lifetime open-market sales: $987K. Historical track record: 3/5 stars across 27 tracked purchases.
Profile
Mario J. Gabelli is a beneficial owner of more than 10% of LGL GROUP INC (LGL), as disclosed in SEC ownership filings. Gabelli's filing history also covers GABELLI EQUITY TRUST INC (GAB) and GAMCO Natural Resources, Gold Income Trust (GNT.B). Gabelli has reported 56 insider filings with the SEC since 2024. The most recent filing was in July 2026.
| Role | 10% Owner |
|---|---|
| Notability | 66/100 |
| Links | Wikipedia |
Board memberships
- LGL GROUP INC
- GABELLI EQUITY TRUST INC
- GAMCO Natural Resources, Gold Income Trust
- GABELLI MULTIMEDIA TRUST INC.
- GDL FUND
Reported roles
- 10% Owner
- Director
- 10% Owner
- Director
- Director
Awards & honors
- Founded Gabelli Asset Management
- Pioneered value investing strategies
- Significant contributions to closed-end fund management
Track Record
InsiderAlpha computes a forward-return-based score for every insider with enough Form 4 purchase history. The metrics below reflect realised performance after each tracked open-market purchase.
| InsiderAlpha rating | ★★★☆☆ (3/5) |
|---|---|
| Total purchases tracked | 27 |
| Purchases with forward-return data | 27 |
| 30-day win rate | 41% |
| 90-day win rate | 26% |
| Avg 5-day return | -0.03% |
| Avg 30-day return | -0.79% |
| Avg 90-day return | -1.24% |
| Best 30-day return | +14.88% |
Trading Pattern
InsiderAlpha's records for Mario J. Gabelli go back to 2024: 54 primary Form 4 filings, an average of 18.0 per year. The typical open-market purchase is $2.45M (31 buys totaling $75.99M). The largest single buy on record is $31.32M of GDV in 2024. Sales side: 14 recorded sales totaling $987K, so the filing history runs buy-heavy by dollar value. No transaction on record carries a Rule 10b5-1 flag - the filings look discretionary rather than pre-scheduled, which makes their timing more informative as a signal.
Career & Filing History
Every role Mario J. Gabelli has reported on a Form 4, reconstructed from the filings themselves - reporting insiders must state their relationship to the issuer (officer title, director seat, or 10% ownership) on every filing.
- 10% Owner at LGL GROUP INC (LGL) - 3 filings, 2026
- Director at GABELLI EQUITY TRUST INC (GAB) - 2 filings, 2024 to 2026
- 10% Owner at GAMCO Natural Resources, Gold Income Trust (GNT.B) - 2 filings, 2025 to 2026
- Director at GABELLI MULTIMEDIA TRUST INC. (GGT) - 6 filings, 2024 to 2026
- Director, 10% Owner at GDL FUND (GDL) - 2 filings, 2024 to 2026
- Director at GABELLI DIVIDEND & INCOME TRUST (GDV) - 6 filings, 2024 to 2026
- Director at Gabelli Healthcare WellnessRx Trust (GRX) - 7 filings, 2024 to 2025
- Insider at GABELLI CONVERTIBLE INCOME SECURITIES FUND INC (GCV) - 4 filings, 2024 to 2025
- Director, 10% Owner at Gabelli Healthcare WellnessRx Trust (GRX) - 2 filings, 2025
- Director at BANCROFT FUND LTD (BCV) - 2 filings, 2024 to 2025
- Director, 10% Owner at Gabelli Global Small Mid Cap Value Trust (GGZ.B) - 1 filing, 2025
- Director, 10% Owner at GABELLI EQUITY TRUST INC (GAB) - 1 filing, 2025
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-07-20 | LGL | LGL GROUP INC | J - Other acquisition / disposition | 572.3K | $6.90 | $3.95M |
| 2026-07-20 | LGL | LGL GROUP INC | J - Other acquisition / disposition | 621.9K | $6.90 | $4.29M |
| 2026-04-29 | GAB | GABELLI EQUITY TRUST INC | J - Other acquisition / disposition | 84.2K | $5.00 | $421K |
| 2026-04-29 | GAB | GABELLI EQUITY TRUST INC | J - Other acquisition / disposition | 156.2K | $5.00 | $781K |
| 2026-03-23 | GNT.B | GAMCO Natural Resources, Gold Income Trust | J - Other acquisition / disposition | 250.0K | $10.00 | $2.50M |
| 2026-03-23 | GNT.B | GAMCO Natural Resources, Gold Income Trust | J - Other acquisition / disposition | 190.0K | $10.00 | $1.90M |
| 2026-02-25 | GGT | GABELLI MULTIMEDIA TRUST INC. | P - Open-market purchase | 25.0K | $4.06 | $101K |
| 2026-02-24 | GDL | GDL FUND | S - Open-market sale | 800 | $8.52 | $7K |
| 2026-02-18 | GDV | GABELLI DIVIDEND & INCOME TRUST | P - Open-market purchase | 4.5K | $29.09 | $131K |
| 2026-01-28 | GDV | GABELLI DIVIDEND & INCOME TRUST | P - Open-market purchase | 5.5K | $28.72 | $158K |
| 2026-01-22 | LGL | LGL GROUP INC | M - Option exercise | 170.0K | $4.75 | $807K |
| 2025-12-04 | GRX | Gabelli Healthcare WellnessRx Trust | P - Open-market purchase | 2.5K | $9.69 | $24K |
| 2025-11-20 | GDV | GABELLI DIVIDEND & INCOME TRUST | P - Open-market purchase | 5.0K | $26.49 | $132K |
| 2025-11-19 | GCV | GABELLI CONVERTIBLE INCOME SECURITIES FUND INC | P - Open-market purchase | 50.0K | $4.29 | $214K |
| 2025-11-05 | GRX | Gabelli Healthcare WellnessRx Trust | P - Open-market purchase | 1.80M | $10.18 | $18.32M |
| 2025-10-28 | GGT | GABELLI MULTIMEDIA TRUST INC. | P - Open-market purchase | 31.0K | $4.04 | $125K |
| 2025-10-21 | BCV | BANCROFT FUND LTD | S - Open-market sale | 1.0K | $23.43 | $23K |
| 2025-09-26 | GGZ.B | Gabelli Global Small Mid Cap Value Trust | J - Other acquisition / disposition | 88.2K | $10.00 | $882K |
| 2025-09-26 | GGZ.B | Gabelli Global Small Mid Cap Value Trust | J - Other acquisition / disposition | 70.6K | $10.00 | $706K |
| 2025-09-26 | GGZ.B | Gabelli Global Small Mid Cap Value Trust | J - Other acquisition / disposition | 473.6K | $10.00 | $4.74M |
Companies - Last 90 Days
- LGL GROUP INC (LGL) - 2 filings, last 2026-07-20
Most Active Insiders Right Now
Mario J. Gabelli has no recent co-filers at the same companies, so here are the insiders with the largest open-market activity across the market in the last 90 days.
- MetLife Investment Management, LLC - $1600000.00B of FINS open-market activity in the last 90 days
- Magnetar Financial LLC - $16357.48B of CRWV open-market activity in the last 90 days
- Marianne Okland - $18.46B of STNG open-market activity in the last 90 days
- VisionWave Holdings, Inc. - $14.13B of SVRE open-market activity in the last 90 days
- Vanessa Allen Sutherland - $7.44B of PSX open-market activity in the last 90 days
- AI Alpine (Luxembourg) S.a.r.l. - $2.69B of INIO open-market activity in the last 90 days
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
- Frank Martell
- Martin Product Sales LLC
- Marcelo Eduardo Martins
- Neil Mehta
- Keith A. Meister
- MetLife Investment Management, LLC
- John Micek
- Andrew J. Mills
Frequently Asked Questions
Who is Mario J. Gabelli?
Mario J. Gabelli is a beneficial owner of more than 10% of LGL GROUP INC (LGL), as disclosed in SEC ownership filings. Gabelli's filing history also covers GABELLI EQUITY TRUST INC (GAB) and GAMCO Natural Resources, Gold Income Trust (GNT.B). Gabelli has reported 56 insider filings with the SEC since 2024. The most recent filing was in July 2026.…
How many SEC Form 4 filings has Mario J. Gabelli submitted recently?
2 primary Form 4 filings in the last 90 days, covering 1 company.
Has Mario J. Gabelli been buying or selling stock?
Recorded transactions: 31 open-market purchases ($75.99M) and 14 open-market sales ($987K) across all tracked filings.
How accurate is Mario J. Gabelli's historical track record?
Across 27 tracked purchases, Mario J. Gabelli averaged -0.8% avg 30-day return with a 41% 30-day win rate. InsiderAlpha rates the track record at 3/5 stars.
Where can I see all of Mario J. Gabelli's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
Learn More
Open the live Mario J. Gabelli profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.