John J. Gebbia
CEO at Siebert Financial Corp.
Sits on 1 board. Last updated September 28, 2026
Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 1 year
- Director since
- 2025
1 year of board service in total across 1 board, counting each seat separately. Longest: Siebert Financial Corp., 1 year.
Chief executive roles
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
Siebert Financial Corp. November 18, 202597.6%
-
Siebert Financial Corp. November 1, 202499.6%
-
Siebert Financial Corp. April 5, 202499.5%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Sep 2, 2026 | Siebert Financial Corp. | Gift | −10,000 | — | — |
| Aug 26, 2026 | Siebert Financial Corp. | Gift | −22,500 | — | — |
| Mar 9, 2026 | Siebert Financial Corp. | Gift | −6,000 | — | — |
| Jan 20, 2026 | Siebert Financial Corp. | Gift | −140,000 | — | — |
| Nov 20, 2025 | Siebert Financial Corp. | Gift | −128,000 | — | — |
| Jun 10, 2025 | Siebert Financial Corp. | Other | +9,697,714 | — | — |
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