Marc Gabelli beneficially owns 4,387,727 shares of LGL Group Inc. That is not an estimate: it is the figure stated on a Schedule 13D/A filed with the US Securities and Exchange Commission on 28 July 2026, with an event date of 15 July.
It is also not his net worth, and the difference matters. This page sets out exactly what the filings show, exactly what they do not, and how to read them yourself — because unlike most people written about under this heading, a meaningful part of his position is a matter of public record.
Last updated: 21 October 2026. Holdings retrieved from SEC EDGAR on this date.
What the filings show
- Beneficial ownership: 4,387,727 shares of LGL Group
- Held directly: 2,009,121
- Held indirectly: 2,378,606 via a limited partnership
- Filed: Schedule 13D/A, 28 July 2026
- Role on that filing: director of LGL Group
- Net worth: no verified figure — none published here
- Check it yourself: SEC EDGAR, CIK 0001233348, free
What this article covers
What the SEC Filings Actually Say
Two documents were filed on the same day, 28 July 2026, and together they are the clearest public statement of his position.
| Holding | Shares | What the filing says |
|---|---|---|
| Held directly | 2,009,121 | Registered in his own name |
| Held indirectly | 2,378,606 | Form 4 describes these as “Shares held by Ltd. Partnership” |
| Total beneficial ownership | 4,387,727 | The figure stated on the Schedule 13D/A |
| Subscription rights | nil | None held following the reported transaction |
Schedule 13D/A and Form 4, both filed 28 July 2026, event date 15 July 2026. Issuer: LGL Group Inc, CUSIP 50186A108. Retrieved from SEC EDGAR on 21 October 2026.
Form 4 filed 28 July 2026. The larger block is held indirectly, which is the detail that makes a simple valuation misleading.
- The source-of-funds codes on the 13D/A are PF, AF and OO — personal funds, affiliate funds and other. That combination is itself a signal that the position is not purely personal.
- He is filed as a director of LGL Group on the Form 4, with the officer box unticked.
- His filer CIK is 0001233348; LGL Group’s is 0000061004.
- LGL’s most recent quarterly report was filed on 14 August 2026, which is where the share count outstanding would be confirmed.
Why Beneficial Ownership Is Not Net Worth
“Beneficial ownership” is a disclosure concept, not an ownership one. The SEC requires you to report shares over which you have voting or investment control. If you control a partnership that holds shares, you report all of them — whether or not you own all of the economic interest in that partnership.
| The filings give you | They do not give you |
|---|---|
| An exact share count, as at a stated date | What those shares are worth today — the price moves |
| The split between direct and indirect holdings | His economic share of the partnership holding the indirect block |
| His role at the issuer | Any salary or fees |
| Changes in holdings over time, within days | Private holdings in anything not publicly listed |
| Declared source-of-funds categories | Property, debt or anything outside securities |
| A verifiable floor on what is visible | A total. Which is why no figure is published here |
US insider disclosure rules. The same limitation applies to every executive whose holdings are read off EDGAR and reported as a net worth.
The Arithmetic People Get Wrong
The temptation is obvious: take the share count, multiply by the price, publish a number. It fails at three separate points.
- The price changes every trading day. A figure calculated on Monday is wrong on Tuesday, and small-capitalisation stocks move more than large ones.
- More than half the block is indirect. 2,378,606 of the 4,387,727 shares sit in a limited partnership. Attributing the full value to one individual assumes a split the filings do not disclose.
- A large holding cannot be sold at the quoted price. Selling millions of shares in a smaller company moves the market against the seller, and insiders face additional restrictions on when they may trade at all.
- It ignores everything not in securities — property, private interests, liabilities.
- So the honest output is the share count and the date, with the valuation left to whoever looks up the price on the day they need it.
The same discipline applies to every wealth figure on this site — see Chris Rokos, where the fund is visible and the person is not, and Elon Musk, where a headline number moves by billions on share price alone.
The Career, and the Family Firm
Marc Joseph Gabelli, born 19 October 1967, is an American investor who has held senior roles across a group of connected public and private companies.
- LGL Group Inc — a US-listed company where he is filed as a director, and the source of the disclosed holdings above.
- Teton Advisors and GGCP, Inc. — further entities within the wider Gabelli group of businesses.
- GAMCO Investors — the investment firm founded by his father, Mario Gabelli, and the centre of the group.
- The structure is the point. A family investment group spread across listed and unlisted entities is genuinely hard to read from outside, which is why the disclosed filings matter more than the estimates.
- He is not his father. Mario Gabelli’s wealth has been estimated by wealth lists for decades; Marc’s has not, and treating one as a proxy for the other is how the circulating figures get made. Our profile of Mario Gabelli covers the elder of the two.
How to Check an American Insider Yourself
This is free, fast, and more reliable than any article — including this one once a new filing lands.
| Step | What you get |
|---|---|
| Search the person on SEC EDGAR | Their filer CIK and every filing they have made |
| Open the Form 4 filings | Insider transactions and shares owned following each transaction, usually within two business days of the trade |
| Look for Schedule 13D or 13G | Significant stakes — filed when someone crosses 5% of a class |
| Check direct against indirect | The ownership column marks D or I, and indirect holdings carry a note on their nature |
| Read the issuer’s 10-Q or 10-K | Shares outstanding, so you can work out the percentage yourself |
| Check the DEF 14A proxy statement | Director and officer compensation, which insider forms do not show |
All of these are free on EDGAR. The UK equivalent is Companies House, which we use for British subjects.
Corrections Made to This Page
| What was there | Why it has changed |
|---|---|
| A “Net Worth Comparison (2026)” table | Unsourced figures about other living people. Removed |
| “Interesting Facts About Marc Gabelli” | A listicle of claims with no sourcing |
| “Current Status and Future Plans” | He has announced no plans. The section invented them |
| A headline figure described as “verified” | The share count is verified; a net worth is not. The filings are now quoted exactly, with their dates and document references |
| No filing references at all | Schedule 13D/A and Form 4, both 28 July 2026, are now cited and linked |
Audit carried out 21 October 2026.
Frequently Asked Questions
What is Marc Gabelli’s net worth?
No verified figure exists, and this page does not publish one. What is verified is a share count: 4,387,727 shares of LGL Group, on a Schedule 13D/A filed with the SEC on 28 July 2026.
Why not just multiply the shares by the price?
Because it would be wrong twice over. The share price moves daily, so any figure is out of date immediately. And 2,378,606 of those shares are held through a limited partnership — beneficial ownership for SEC purposes is not the same as owning all the economic value.
What does “beneficial ownership” mean?
It means voting or investment control over the shares, which is what the SEC requires to be disclosed. It does not mean the filer owns all of the money — shares held by a partnership or fund are reported by the person who controls them.
Where can I check this myself?
SEC EDGAR, free. His filer CIK is 0001233348 and LGL Group’s is 0000061004. Forms 3, 4 and 5 show insider holdings and Schedule 13D shows significant stakes.
How many shares does he hold directly?
2,009,121 directly and 2,378,606 indirectly, per the Form 4 filed on 28 July 2026. The indirect block is described on the form as shares held by a limited partnership.
Is he an officer or a director of LGL Group?
On the Form 4 filed on 28 July 2026 he is reported as a director, with the officer box not ticked. Roles at group companies change, and the filings are the place to check the current position.
Is he as wealthy as his father?
Almost certainly not, and the comparison is not a useful one. Mario Gabelli’s wealth has been estimated by wealth lists for years; Marc’s has not. Different disclosure, different question.
Why do sites give different figures for him?
Because they are estimating from the same public filings and guessing at everything else — the partnership split, private holdings, property, debt. The filings are a floor on what is visible, not a measure of what exists.
What is GAMCO?
GAMCO Investors, the investment firm founded by Mario Gabelli. The wider group includes several related public and private entities, which is part of why the family’s holdings are complicated to read.
What is the single most useful thing on this page?
That you can check it yourself in five minutes. US insider filings are free, searchable and updated within days of a trade — which is more than can be said for any net worth estimate.
Conclusion
4,387,727 shares of LGL Group, of which 2,009,121 are held directly and 2,378,606 through a limited partnership, as disclosed on 28 July 2026. That is the verified position, and it is more useful than any estimate because you can check it and because it will be updated the next time he trades.
What it is not is a net worth. The price moves, the partnership split is not disclosed, and nothing outside listed securities appears at all. Anyone turning that share count into a single confident number is doing arithmetic the filings do not support.
Sources
- SEC — Schedule 13D/A, Marc Gabelli / LGL Group, filed 28 July 2026
- SEC — Form 4, filed 28 July 2026
- SEC EDGAR — Marc Gabelli filer record, CIK 0001233348
- SEC EDGAR — LGL Group Inc, CIK 0000061004
- GAMCO Investors — background
Disclaimer
Share counts are taken from filings made with the US Securities and Exchange Commission and are correct as at the filing dates stated; holdings change and later filings supersede these. Beneficial ownership under SEC rules reflects voting or investment control, not necessarily economic ownership, and no net worth figure is published here because none can be verified. Nothing on this page is investment advice or a recommendation regarding any security. Information retrieved on 21 October 2026. More from The UK Post.