William Ki Chul Cho
CIK 1835836 · View on SEC EDGAR ↗
Insider
First SEC filing: Jan. 4, 2021 · Latest: Jan. 4, 2021
On this page
Insider at
Insider transactions
0 buys (P)
0 sells (S)
Net:
$0
+ 11 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
No open-market trades on record; showing all filings.
| Date | Ticker | Code | Shares | Price | Value | Owned after | Δ own | A/D | vs now |
|---|---|---|---|---|---|---|---|---|---|
| April 3, 2023 | ZLAB | M | 1,907 | — | — | 7,631 Direct | -19.99% | Disposed | (price as of 2026-08-20) |
| April 3, 2023 | ZLAB | M | 920 | — | — | 2,760 Direct | -25.00% | Disposed | (price as of 2026-08-20) |
| April 3, 2023 | ZLAB | M | 1,907 | — | — | 53,747 Direct | +3.68% | Acquired | (price as of 2026-08-20) |
| April 3, 2023 | ZLAB | M | 920 | — | — | 51,840 Direct | +1.81% | Acquired | (price as of 2026-08-20) |
| June 25, 2022 | ZLAB | A | 51,700 | — | — | 51,700 Direct | — | Acquired | (price as of 2026-08-20) |
| April 1, 2022 | ZLAB | M | 920 | — | — | 3,680 Direct | -20.00% | Disposed | (price as of 2026-08-20) |
| April 1, 2022 | ZLAB | A | 9,538 | — | — | 9,538 Direct | — | Acquired | (price as of 2026-08-20) |
| April 1, 2022 | ZLAB | A | 50,114 | — | — | 50,114 Direct | — | Acquired | (price as of 2026-08-20) |
| April 1, 2022 | ZLAB | M | 920 | — | — | 50,920 Direct | +1.84% | Acquired | (price as of 2026-08-20) |
| April 1, 2021 | ZLAB | A | 4,600 | — | — | 4,600 Direct | — | Acquired | (price as of 2026-08-20) |
| April 1, 2021 | ZLAB | A | 24,050 | — | — | 24,050 Direct | — | Acquired | (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.
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 |
|---|---|---|---|---|---|---|---|
| April 3, 2023 | ZLAB | Restricted Share Units | American Depositary Shares [F1] (1,907) | — | — | 1,907 | Disposed |
| April 3, 2023 | ZLAB | Restricted Share Units | American Depositary Shares [F1] (920) | — | — | 920 | Disposed |
| June 25, 2022 | ZLAB | Restricted Share Units | American Depositary Shares (51,700) | — | — | 51,700 | Acquired |
| April 1, 2022 | ZLAB | Restricted Share Units | American Depositary Shares [F1] (920) | — | — | 920 | Disposed |
| April 1, 2022 | ZLAB | Restricted Share Units | American Depositary Shares [F1] (9,538) | — | — | 9,538 | Acquired |
| April 1, 2022 | ZLAB | Stock Options (Right to Buy) | American Depositary Shares [F1] (50,114) | $45.47 | April 1, 2032 | 50,114 | Acquired |
| April 1, 2021 | ZLAB | Restricted Share Units | Ordinary Shares (4,600) | — | — | 4,600 | Acquired |
| April 1, 2021 | ZLAB | Stock Options (Right to Buy) | Ordinary Shares (24,050) | $130.96 | April 1, 2031 | 24,050 | Acquired |
Exercise/conversion price is blank when not applicable (e.g. RSUs).
Initial ownership (Form 3) 3 holdings
Securities held when first becoming an insider, per SEC Form 3.