Du Ying 4

4 · Zai Lab Ltd · Filed Jul 6, 2026

AI-generated summary of this filing

Updated Jul 6, 2026

Zai Lab (ZLAB) CEO Du Ying Receives RSUs, Withholds Shares for Taxes

What Happened

Du Ying, Chairperson and CEO of Zai Lab Ltd (ZLAB), had restricted share units (RSUs) vest on July 1–2, 2026, resulting in 29,048 ADSs arising from conversion of RSUs. To cover tax withholding, 11,431 ADSs were surrendered (disposed) for total reported withholding proceeds of about $218,773. Separately, Du received a new RSU award of 80,393 ADSs on July 2, 2026.
The withheld ADSs were used solely to satisfy tax liabilities (reported as Form 4 code F). The vesting/conversion events are reported as derivative exercises/conversions (code M) and the new award is reported as a grant (code A).

Key Details

Transaction dates: 2026-07-01 and 2026-07-02; Form 4 filed 2026-07-06 (appears timely).
Vesting/conversion: 18,000 ADSs (7/1) and 11,048 ADSs (7/2) — total 29,048 ADSs acquired via RSU vesting (reported as derivative exercises, code M).
Tax withholding (dispositions): 7,083 ADSs @ $19.15 = $135,639 (7/1) and 4,348 ADSs @ $19.12 = $83,134 (7/2); total ≈ $218,773 (reported as code F).
New grant: 80,393 RSU ADSs awarded 7/2/2026 (code A); vesting schedule noted in footnotes (multi-year vesting).
ADS note: Each ADS represents 10 ordinary shares; filing reports amounts in ADSs (footnote).
Shares owned after transaction: not specified in the provided filing excerpt.
Transaction codes explained: M = exercise/conversion of derivative (RSU vesting here), F = shares withheld for taxes, A = grant/award.

Context

These were RSU vesting events and an RSU grant, not open-market purchases or sales for investment gain. The disposals were tax-withholding (common on vesting) rather than voluntary sales of stock for cash.
The new 80,393-RSU award is subject to multi-year vesting per footnotes; vested ADSs are delivered after each vesting date. This type of reporting is routine for executive compensation and doesn't by itself indicate a buy/sell signal.

Form 4

Period: 2026-07-01

DirectorChairperson & CEO

Transactions

Exercise/Conversion
American Depositary Shares
[F1][F2][F3]
2026-07-01+18,000→ 1,221,784 total
Tax Payment
American Depositary Shares
[F1][F4]
2026-07-01$19.15/sh−7,083$135,639→ 1,214,701 total
Exercise/Conversion
American Depositary Shares
[F1][F2][F3]
2026-07-02+11,048→ 1,225,749 total
Tax Payment
American Depositary Shares
[F1][F4]
2026-07-02$19.12/sh−4,348$83,134→ 1,221,401 total
Exercise/Conversion
Restricted Share Units
[F3][F5][F1]
2026-07-01−18,000→ 36,000 total
→ American Depositary Shares (18,000 underlying)
Exercise/Conversion
Restricted Share Units
[F3][F6][F1]
2026-07-02−11,048→ 33,146 total
→ American Depositary Shares (11,048 underlying)
Award
Restricted Share Units
[F3][F7][F1]
2026-07-02+80,393→ 80,393 total
→ American Depositary Shares (80,393 underlying)

Footnotes (7)

[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.
[F4]These ADSs were withheld to cover taxes upon vesting of RSUs.
[F5]The RSUs vest in equal annual installments over four years beginning on 07/01/2025, 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.
[F6]The RSUs vest in equal annual installments over four years beginning on 07/02/2026, 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.
[F7]The RSUs vest in equal annual installments over four years beginning on 07/02/2027, 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.

Signature

/s/ Bruce Blefeld, Attorney-in-Fact|2026-07-06

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