John M. Gebbia
Insider
Activist
First SEC filing: Jan. 2, 2019 · Latest: Jan. 22, 2026
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net: $0
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| Sept. 28, 2026 | SIEB | G | 34,680 | · | · | 524,680 Indirect | +7.08% | Acquired | (price as of 2026-10-06) |
| Jan. 20, 2026 | SIEB | J | 26,000 | · | · | 490,000 Indirect | -5.04% | Disposed | (price as of 2026-10-06) |
| Jan. 20, 2026 | SIEB | G | 26,000 | · | · | 516,000 Indirect | +5.31% | Acquired | (price as of 2026-10-06) |
| Jan. 20, 2026 | SIEB | G | 3,000 | · | · | 1,921,891 Direct | -0.16% | Disposed | (price as of 2026-10-06) |
| Nov. 20, 2025 | SIEB | J | 26,000 | · | · | 490,000 Indirect | -5.04% | Disposed | (price as of 2026-10-06) |
| Nov. 20, 2025 | SIEB | G | 26,000 | · | · | 516,000 Indirect | +5.31% | Acquired | (price as of 2026-10-06) |
| June 11, 2025 | SIEB | J | 300,000 | · | · | 490,000 Indirect | +157.89% | Acquired | (price as of 2026-10-06) |
| June 11, 2025 | SIEB | J | 100,000 | · | · | 1,924,891 Direct | -4.94% | Disposed | (price as of 2026-10-06) |
| March 3, 2025 | SIEB | G | 118,000 | · | · | 2,024,891 Direct | +6.19% | Acquired | (price as of 2026-10-06) |
| Dec. 9, 2024 | SIEB | G | 1,000 | · | · | 1,906,891 Direct | -0.05% | Disposed | (price as of 2026-10-06) |
| Jan. 19, 2024 | SIEB | G | 36,000 | · | · | 190,000 Indirect | +23.38% | Acquired | (price as of 2026-10-06) |
| Dec. 14, 2023 | SIEB | G | 36,000 | · | · | 154,000 Indirect | +30.51% | Acquired | (price as of 2026-10-06) |
| April 10, 2023 | SIEB | S | 100,000 | $1.85 | $185,000 | 17,439,200 Indirect | -0.57% | Disposed | 20.0% (price as of 2026-10-06) |
| April 10, 2023 | SIEB | S | 100,000 | $1.85 | $185,000 | 1,909,091 Direct | -4.98% | Disposed | 20.0% (price as of 2026-10-06) |
| Dec. 14, 2022 | SIEB | G | 100,000 | · | · | 17,539,200 Indirect | -0.57% | Disposed | (price as of 2026-10-06) |
| Dec. 14, 2022 | SIEB | G | 80,000 | · | · | 118,000 Indirect | +210.53% | Acquired | (price as of 2026-10-06) |
| Dec. 14, 2022 | SIEB | G | 40,000 | · | · | 2,009,091 Direct | -1.95% | Disposed | (price as of 2026-10-06) |
| April 1, 2021 | SIEB | J | 222,410 | · | · | 2,049,091 Direct | +12.18% | Acquired | (price as of 2026-10-06) |
| Feb. 12, 2021 | SIEB | G | 12,000 | · | · | 36,000 Indirect | +50.00% | Acquired | (price as of 2026-10-06) |
| April 16, 2020 | SIEB | S | 685,155 | $5.60 | $3,836,868 | 1,826,681 Direct | -27.28% | Disposed | -60.4% (price as of 2026-10-06) |
| Jan. 7, 2020 | SIEB | G | 6,000 | · | · | 24,000 Indirect | +33.33% | Acquired | (price as of 2026-10-06) |
| Jan. 1, 2020 | SIEB | J | 716,917 | $9.02 | $6,466,591 | 2,511,836 Direct | +39.94% | Acquired | -75.4% (price as of 2026-10-06) |
| May 3, 2019 | SIEB | G | 5,000 | · | · | 18,000 Indirect | +38.46% | Acquired | (price as of 2026-10-06) |
| Dec. 28, 2018 | SIEB | G | 9,600 | · | · | 1,794,919 Direct | -0.53% | Disposed | (price as of 2026-10-06) |
| Dec. 28, 2018 | SIEB | G | 8,800 | · | · | 13,000 Indirect | +209.52% | Acquired | (price as of 2026-10-06) |
P = Open-market purchase · S = Sale · A = Grant/award · M = Option exercise · G = Gift · F = Tax withholding
Insider transactions are not a recommendation; sales are often driven by liquidity or tax reasons.
Initial ownership (Form 3) 2 holdings
Securities held when first becoming an insider, per SEC Form 3.