John M. Gebbia
CIK 1727425 · View on SEC EDGAR ↗
Insider
Activist
First SEC filing: Jan. 2, 2019 · Latest: Jan. 22, 2026
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 19 non-open-market transactions below
last 12 months, based on the transactions shown below
Price change vs current quote, split-adjusted for corporate actions since the filing — not benchmarked, not annualized, not size-weighted
19 other filings hidden
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| April 10, 2023 | SIEB | S | 100,000 | $1.85 | $185,000 | 17,439,200 Indirect | -0.57% | Disposed | 13.2% (price as of 2026-08-20) |
| April 10, 2023 | SIEB | S | 100,000 | $1.85 | $185,000 | 1,909,091 Direct | -4.98% | Disposed | 13.2% (price as of 2026-08-20) |
| April 16, 2020 | SIEB | S | 685,155 | $5.60 | $3,836,868 | 1,826,681 Direct | -27.28% | Disposed | -62.6% (price as of 2026-08-20) |
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.