ZLAB affiliate files Form 144 to sell 5,199 ADS

ZLAB affiliate filed a Form 144 to sell up to 5,199 American Depositary Shares following restricted stock vesting.

Rhea-AI Filing Summary

ZLAB affiliate filed a Form 144 to sell up to 5,199 American Depositary Shares following restricted stock vesting. The filing lists the ADS as vested on 04/01/2026 with the broker-dealer Fidelity Brokerage Services LLC. The filing also shows a prior sale of 1,703 ADS on 03/13/2026.

Insights

Securities Counsel

Form 144 notice records a proposed affiliate sale tied to compensation vesting.

Form 144 is a regulatory notice that an affiliate intends to sell registered securities; here the filing links the sale to Restricted Stock Vesting on 04/01/2026. The broker-dealer named is Fidelity Brokerage Services LLC.

Timing and actual execution are not guaranteed by the notice; subsequent transaction reports or broker confirmations will show whether and when the listed ADS are sold.

Corporate Governance Analyst

The filing shows routine insider liquidity after a vesting event, with a recent small prior sale.

The record shows a prior disposition of 1,703 ADS on 03/13/2026, which provides context for the current notice of up to 5,199 ADS. This pattern is consistent with compensation-related sales rather than open-market trading strategy disclosure.

Observers may watch for follow-up regulatory filings that confirm execution details and final proceeds.

Key Figures

Proposed ADS to be sold: 5,199 ADS ADS sold in past 3 months: 1,703 ADS Reported dollar figure: $31,723.82 +1 more

4 metrics

Proposed ADS to be sold 5,199 ADS tied to Restricted Stock Vesting on 04/01/2026

ADS sold in past 3 months 1,703 ADS sale reported on 03/13/2026 by Yajing Chen

Reported dollar figure $31,723.82 appears adjacent to the 1,703 ADS past-sale row (03/13/2026)

Numeric entry on securities row 106,008.13 numeric field listed on the securities line (04/02/2026)

Key Terms

American Depositary Shares, Form 144, Restricted Stock Vesting

3 terms

American Depositary Shares financial

"American Depositary Shares | Fidelity Brokerage Services LLC"

American depositary shares (ADSs) are a way for investors in the United States to buy shares of foreign companies without dealing with international markets directly. They represent ownership in a foreign company's stock and are traded on U.S. stock exchanges, making it easier for American investors to buy, sell, and own parts of companies from around the world.

Form 144 regulatory

"CONTENT METADATA: "form_type": "144""

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Restricted Stock Vesting financial

"Securities To Be Sold | 04/01/2026 | Restricted Stock Vesting"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What does ZLAB's Form 144 filing mean for shareholders?

It notifies the market of an affiliate's intent to sell vested ADS. The filing lists 5,199 ADS tied to restricted stock vesting on 04/01/2026, indicating planned insider liquidity rather than a corporate action.

Who is the selling party in the ZLAB Form 144?

The filing identifies an affiliate associated with a vested compensation award. It lists the broker-dealer Fidelity Brokerage Services LLC and shows prior sales by Yajing Chen on 03/13/2026.

How many ZLAB ADS were reported sold in the past three months?

The filing reports a prior sale of 1,703 ADS on 03/13/2026. That sale is listed separately from the current Form 144 notice of up to 5,199 ADS tied to vesting.

When did the restricted stock vest that triggered the Form 144?

The restricted stock vesting date is shown as 04/01/2026. The Form 144 lists the proposed sale amount of 5,199 ADS as resulting from that vesting event.

Does the Form 144 confirm the ADS have been sold?

No, Form 144 is a notice of intent to sell by an affiliate. Execution is not confirmed; follow-up transaction reports will show whether the listed ADS were sold and the actual proceeds.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 04/02/2026 - 04:20 PM Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001985694
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Zai Lab Ltd
SEC File Number	001-38205
Address of Issuer	899 HALEI ROAD BUILDING B, PUDONG SHANGHAI CHINA 201203
Phone	862161632588
Name of Person for Whose Account the Securities are To Be Sold	Chen Yajing
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
American Depositary Shares	Fidelity Brokerage Services LLC 900 Salem Street Smithfield RI 02917	5199	106008.13	307140690	04/02/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
American Depositary Shares	04/01/2026	Restricted Stock Vesting	Issuer			5199	04/01/2026	Compensation

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
Yajing Chen 899 Halei Road Building B, Pudong Shanghai F4 201203	American Depositary Shares	03/13/2026	1703	31723.82

144: Remarks and Signature

Remarks	Sale includes an amount necessary to cover a tax obligation resulting from the settlement of a vested equity award distribution.
Date of Notice	04/02/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Daniel Tucci, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Yajing Chen
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)