Form 4 for ZLAB Zai Lab Ltd
Accepted 2026-03-10 00:00:00 ET · period of report 2026-03-06 · accession 0000905148-26-001219 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DMT | 2026-03-10 | 2026-03-06+ | ZLAB | Du Ying | COB, CEO, Dir | M - OptEx | $1.74 | +100.0K | 1.01M | +11% | +$174.0K |
| DMT | 2026-03-10 | 2026-03-06+ | ZLAB | Du Ying | COB, CEO, Dir | S - Sale+OE | $19.23 | -100.0K | 964.2K | -9% | -$1.92M |
| DMT | 2026-03-10 | 2026-03-06+ | ZLAB | Du Ying | COB, CEO, Dir | M - OptEx | $0.00 | -100.0K | 772.2K | -11% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | American Depositary Shares | 2026-03-09 | M | A | 50,000 | $1.74 | 1,014,161 | D | — | — | (F1) Each American Depositary Share ("ADS") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs. |
| 2 | Common | American Depositary Shares | 2026-03-09 | S | D | 50,000 | $19.03 | 964,161 | D | — | — | (F1) Each American Depositary Share ("ADS") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs. (F4) Reflects a weighted average sale price of $19.0293 per share, at prices ranging from $18.78 to $19.25 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price. |
| 3 | Common | American Depositary Shares | 2026-03-06 | S | D | 50,000 | $19.42 | 964,161 | D | — | — | (F1) Each American Depositary Share ("ADS") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs. (F3) Reflects a weighted average sale price of $19.4187 per share, at prices ranging from $19.04 to $19.68 per share. The Reporting Person will provide, upon request by the staff of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price. |
| 4 | Common | American Depositary Shares | 2026-03-06 | M | A | 50,000 | $1.74 | 1,014,161 | D | — | — | (F1) Each American Depositary Share ("ADS") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs. |
| 5 | Derivative | Stock Options (Right to Buy) | 2026-03-09 | M | D | 50,000 | $0.00 | 722,184 | D | $1.74 · — to 2026-08-25 | 50,000 American Depositary Shares | (F5) The option vested in equal annual installments over five years beginning on August 25, 2017, the first anniversary of the date of grant. |
| 6 | Derivative | Stock Options (Right to Buy) | 2026-03-06 | M | D | 50,000 | $0.00 | 772,184 | D | $1.74 · — to 2026-08-25 | 50,000 American Depositary Shares | (F5) The option vested in equal annual installments over five years beginning on August 25, 2017, the first anniversary of the date of grant. |