Marc Gabelli - SEC Form 4 Insider Trading Activity
Summary
Updated Aug 3, 2026
Marc Gabelli has filed 1 SEC Form 4 filing across 1 company in the last 90 days.
Profile
Marc Gabelli is Director at M-tron Industries, Inc. (MPTI). SEC records also connect Gabelli to LGL GROUP INC (LGL). Gabelli has reported 4 insider filings with the SEC since 2026. The most recent filing was in April 2026.
| Role | Director, 10% Owner |
|---|---|
| Notability | 36/100 |
Board memberships
- M-tron Industries, Inc.
- LGL GROUP INC
Reported roles
- Director
- Director
Awards & honors
- Appointed as Director of LGL Group Inc
- Holds 10% ownership disclosed in SEC filing dated 2026-01-21
- Contributes to governance and strategic oversight at LGL Group
Trading Pattern
InsiderAlpha's records for Marc Gabelli go back to 2026: 5 primary Form 4 filings, an average of 5.0 per year. 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 Marc 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.
- Director, 10% Owner at LGL GROUP INC (LGL) - 3 filings, 2026
- Director at M-tron Industries, Inc. (MPTI) - 2 filings, 2026
Recent Transactions
| Date | Ticker | Company | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-07-28 | LGL | LGL GROUP INC | J - Other acquisition / disposition | 1.48M | $6.90 | $10.20M |
| 2026-07-28 | LGL | LGL GROUP INC | J - Other acquisition / disposition | 1.85M | $6.90 | $12.79M |
| 2026-04-28 | MPTI | M-tron Industries, Inc. | J - Other acquisition / disposition | 3.3K | $59.00 | $193K |
| 2026-03-30 | LGL | LGL GROUP INC | A - Grant or award | 2.1K | $0.00 | |
| 2026-03-23 | MPTI | M-tron Industries, Inc. | A - Grant or award | 242 | $0.00 | |
| 2026-01-21 | LGL | LGL GROUP INC | A - Grant or award | 50.0K | $0.00 | |
| 2026-01-21 | LGL | LGL GROUP INC | M - Option exercise | 8.6K | $4.75 | $41K |
Companies - Last 90 Days
- LGL GROUP INC (LGL) - 1 filing, last 2026-07-28
Other Insiders Active in the Same Stocks
Insiders who reported open-market trades at the companies Marc Gabelli has recently filed at. Multiple unrelated insiders buying the same stock within a short window - cluster buying - has historically been one of the strongest Form 4 signals.
- Mario J. Gabelli - $124 of LGL open-market activity in the last 12 months
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 Marc Gabelli?
Marc Gabelli is Director at M-tron Industries, Inc. (MPTI). SEC records also connect Gabelli to LGL GROUP INC (LGL). Gabelli has reported 4 insider filings with the SEC since 2026. The most recent filing was in April 2026.…
How many SEC Form 4 filings has Marc Gabelli submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Where can I see all of Marc 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 Marc Gabelli profile on InsiderAlpha for real-time alerts, AI-scored trade ideas, and full transaction history.