Siebert Financial Corp
Ownership
Ownership Structure
Who owns Siebert Financial Corp (SIEB)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 53.4% of the shares are freely tradable; institutional investors hold 8.0%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| CANTOR FITZGERALD, L. P. | 2.50 | 1,031,822 | +0.0 | 06/30/2026 |
| Vanguard Capital Management, LLC | 1.33 | 549,720 | -0.2 | 06/30/2026 |
| Geode Capital Management, LLC | 0.62 | 253,888 | -41.7 | 06/30/2026 |
| Cetera Investment Advisers | 0.36 | 146,990 | +0.4 | 06/30/2026 |
| Millennium Management LLC | 0.29 | 121,232 | +0.0 | 06/30/2026 |
| Vanguard Fiduciary Trust Co | 0.26 | 107,626 | -4.7 | 06/30/2026 |
| BlackRock Inc | 0.25 | 101,946 | -86.9 | 06/30/2026 |
| The Goldman Sachs Group Inc | 0.14 | 56,158 | +55.7 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 0.78 | 322,275 | +0.0 | 09/30/2026 |
| Fidelity Extended Market Index | 0.28 | 114,365 | -0.5 | 08/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Gebbia John J | CEO | 9,794,994 | 19,589,988 $ | Sep 2, 2026 | indirect |
| Gebbia Gloria E | Director | 9,794,994 | 19,589,988 $ | Sep 2, 2026 | indirect |
| Gebbia Richard | Member of 10% owner group | 593,613 | 1,187,226 $ | Sep 28, 2026 | indirect |
| Gebbia John M. | Director | 524,680 | 1,049,360 $ | Sep 28, 2026 | indirect |
| Gebbia David | Member of 10% owner group | 391,340 | 782,680 $ | Sep 28, 2026 | indirect |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Sep 28, 2026 | Gebbia David | Member of 10% owner group | Other | 17,340 | 0.00 | – |
| Sep 28, 2026 | Gebbia John M. | Director | Other | 34,680 | 0.00 | – |
| Sep 28, 2026 | Gebbia Richard | Member of 10% owner group | Other | 17,340 | 0.00 | – |
| Sep 2, 2026 | Gebbia John J | CEO | Other | 10,000 | 0.00 | – |
| Sep 2, 2026 | Gebbia Gloria E | Director | Other | 10,000 | 0.00 | – |
| Aug 26, 2026 | Gebbia John J | CEO | Other | 22,500 | 0.00 | – |
| Aug 26, 2026 | Gebbia Gloria E | Director | Other | 22,500 | 0.00 | – |
| May 28, 2026 | Gebbia Richard | Member of 10% owner group | Buy | 15,000 | 1.86 | 27,900 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: November 2, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.