Edward Woo
Insider
First SEC filing: Jan. 3, 2023 · Latest: Jan. 3, 2023
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
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| May 5, 2026 | ZSTK | A | 35,000 | · | · | 35,000 Direct | · | Acquired | (price as of 2026-10-02) |
| Dec. 15, 2024 | ZSTK | A | 50,000 | · | · | 134,698 Direct | +59.03% | Acquired | (price as of 2026-10-02) |
| Nov. 15, 2023 | ZSTK | A | 74,512 | · | · | 84,698 Direct | +731.51% | Acquired | (price as of 2026-10-02) |
| March 17, 2023 | ZSTK | A | 100,000 | · | · | 100,000 Direct | · | Acquired | (price as of 2026-10-02) |
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.
Derivative holdings (Form 4 Table II) Options, RSUs and convertible securities reported on Form 4 Table II.
| Date | Ticker | Security | Underlying | Exercise price | Expiration | Shares | A/D |
|---|---|---|---|---|---|---|---|
| May 5, 2026 | ZSTK | Director Stock Option ("Right to Buy") | Common Shares | $5.10 | May 4, 2036 | 35,000 | Acquired |
| March 17, 2023 | ZSTK | Options (Right to Buy) | Common Shares | $0.35 | March 17, 2033 | 100,000 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 2 holdings
Securities held when first becoming an insider, per SEC Form 3.