Form 4 for ZLAB Zai Lab Ltd
Accepted 2026-03-12 00:00:00 ET · period of report 2026-03-10 · accession 0000905148-26-001233 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DT | 2026-03-12 | 2026-03-10 | ZLAB | Du Ying | COB, CEO, Dir | F - Tax | $19.41 | -116.9K | 1.11M | -10% | -$2.27M |
| DMT | 2026-03-12 | 2026-03-10 | ZLAB | Du Ying | COB, CEO, Dir | M - OptEx | $1.74 | +263.7K | 1.23M | +27% | +$458.9K |
| DT | 2026-03-12 | 2026-03-11 | ZLAB | Du Ying | COB, CEO, Dir | S - Sale+OE | $19.08 | -1,067 | 1.11M | -0.1% | -$20.4K |
| DMT | 2026-03-12 | 2026-03-10 | ZLAB | Du Ying | COB, CEO, Dir | M - OptEx | $0.00 | -263.7K | 461.1K | -36% | $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 | 2026-03-10 | F | D | 116,936 | $19.41 | 1,108,317 | 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 | 2026-03-10 | M | A | 2,655 | — | 1,110,972 | 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) ADSs acquired upon vesting of Restricted Share Units ("RSUs"). (F4) Each RSU represents a contingent right to receive one ADS. |
| 3 | Common | American Depositary Shares | 2026-03-11 | S | D | 1,067 | $19.08 | 1,109,905 | 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. (F5) These ADSs were sold automatically to cover taxes upon vesting of RSUs. |
| 4 | Common | American Depositary Shares | 2026-03-10 | M | A | 261,092 | $1.74 | 1,225,253 | 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 | Restricted Share Units | 2026-03-10 | M | D | 2,655 | $0.00 | 7,965 | D | — · — to — | 2,655 American Depositary Shares | (F4) Each RSU represents a contingent right to receive one ADS. (F7) The RSUs vest in equal annual installments over four years beginning on 03/10/2026, the first anniversary of the date of grant, subject to continuous service. Vested shares will be delivered in the form of ADSs to the reporting person following vesting. |
| 6 | Derivative | Stock Options (Right to Buy) | 2026-03-10 | M | D | 261,092 | $0.00 | 461,092 | D | $1.74 · — to 2026-08-25 | 261,092 American Depositary Shares | (F6) The option vested in equal annual installments over five years beginning on August 25, 2017, the first anniversary of the date of grant. |