Form 4 for ZLAB Zai Lab Ltd
Accepted 2026-04-03 17:57:53 ET · period of report 2026-03-04 · accession 0000905148-26-001543 · 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DM | 2026-04-03 17:57 | 2026-04-01+ | ZLAB | Chen Yajing | CFO | M - OptEx | — | +17.8K | 37.8K | +89% | — |
| D | 2026-04-03 17:57 | 2026-04-02 | ZLAB | Chen Yajing | CFO | S - Sale+OE | $20.39 | -5,199 | 32.6K | -14% | -$106.0K |
| D | 2026-04-03 17:57 | 2026-03-04 | ZLAB | Chen Yajing | CFO | A - Grant | $0.00 | +11.9K | 11.9K | New | $0 |
| DM | 2026-04-03 17:57 | 2026-04-01+ | ZLAB | Chen Yajing | CFO | M - OptEx | $0.00 | -17.8K | 2,500 | -88% | $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 | 2026-04-01 | M | A | 1,500 | — | 21,499 | 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. (F2) ADSs acquired upon vesting of Restricted Share Units ("RSUs"). (F3) Each RSU represents a contingent right to receive one ADS. |
| 2 | Common | American Depositary Shares | 2026-04-01 | M | A | 13,758 | — | 35,257 | 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. (F2) ADSs acquired upon vesting of Restricted Share Units ("RSUs"). (F3) Each RSU represents a contingent right to receive one ADS. |
| 3 | Common | American Depositary Shares | 2026-04-02 | M | A | 2,500 | — | 37,757 | 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. (F2) ADSs acquired upon vesting of Restricted Share Units ("RSUs"). (F3) Each RSU represents a contingent right to receive one ADS. |
| 4 | Common | American Depositary Shares | 2026-04-02 | S | D | 5,199 | $20.39 | 32,558 | 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) These ADSs were sold automatically to cover taxes upon vesting of RSUs. |
| 5 | Derivative | Performance-Based Share Units | 2026-03-04 | A | A | 11,924 | $0.00 | 11,924 | D | — · — to — | 11,924 American Depositary Shares | (F5) Each performance-based share unit ("PSU") represents a contingent right to receive one ADS. (F6) The reporting person was granted PSUs on March 12, 2025 based on the satisfaction of specified performance criteria between January 1, 2025 through December 31, 2025. On March 4, 2026, the performance-based vesting conditions were confirmed for PSUs representing 11,924 ADSs. The PSUs vest in full on March 12, 2028, the third anniversary of the date of grant, subject to continuous service. (F6) The reporting person was granted PSUs on March 12, 2025 based on the satisfaction of specified performance criteria between January 1, 2025 through December 31, 2025. On March 4, 2026, the performance-based vesting conditions were confirmed for PSUs representing 11,924 ADSs. The PSUs vest in full on March 12, 2028, the third anniversary of the date of grant, subject to continuous service. (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. |
| 6 | Derivative | Restricted Share Units | 2026-04-01 | M | D | 1,500 | $0.00 | 1,500 | D | — · — to — | 1,500 American Depositary Shares | (F3) Each RSU represents a contingent right to receive one ADS. (F7) The RSUs vest in equal annual installments over five years beginning on 04/01/2023, 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. (F7) The RSUs vest in equal annual installments over five years beginning on 04/01/2023, 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. (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. |
| 7 | Derivative | Restricted Share Units | 2026-04-01 | M | D | 13,758 | $0.00 | 27,516 | D | — · — to — | 13,758 American Depositary Shares | (F3) Each RSU represents a contingent right to receive one ADS. (F8) The RSUs vest in equal annual installments over four years beginning on 04/01/2025, 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. (F8) The RSUs vest in equal annual installments over four years beginning on 04/01/2025, 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. (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. |
| 8 | Derivative | Restricted Share Units | 2026-04-02 | M | D | 2,500 | $0.00 | 2,500 | D | — · — to — | 2,500 American Depositary Shares | (F3) Each RSU represents a contingent right to receive one ADS. (F9) The RSUs vest in equal annual installments over four years beginning on 04/03/2024, 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. (F9) The RSUs vest in equal annual installments over four years beginning on 04/03/2024, 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. (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. |