ZLAB files Form 144 to sell 853 ADS

ZLAB filed a Form 144 reporting a proposed sale of 853 American Depositary Shares.

Rhea-AI Filing Summary

ZLAB filed a Form 144 reporting a proposed sale of 853 American Depositary Shares.

The filing lists a proposed sale value of $17,442.57 and shows 307,140,690 shares on the record line with a 04/06/2026 date. The document also discloses recent transfers by Yajing Chen of 1,703 ADS on 03/13/2026 ($31,723.82) and 5,199 ADS on 04/02/2026 ($106,008.13), and a restricted stock vesting entry dated 04/02/2026.

Insights

Securities Compliance Analyst

Form 144 notifies the market of a proposed resale of restricted or control securities.

Form 144 is a routine notice required under Rule 144 when certain restricted or control securities are proposed to be sold; it does not itself execute a sale. The filing here lists 853 ADS as the proposed amount and records recent transfers by an individual named Yajing Chen.

Timing and method of any actual sale are not included in the excerpt; subsequent Form 4/Form 144 amendments or broker reports would show execution. Holdings and dates shown (e.g., 04/06/2026) are useful for traceability and compliance checks.

Key Figures

Proposed ADS sale: 853 shares Proposed sale value: $17,442.57 Shares shown on line: 307,140,690 shares +2 more

5 metrics

Proposed ADS sale 853 shares listed on Form 144

Proposed sale value $17,442.57 value reported alongside 853 ADS

Shares shown on line 307,140,690 shares line item dated 04/06/2026

Prior transfer 1,703 ADS transfer on 03/13/2026 valued $31,723.82

Prior transfer 5,199 ADS transfer on 04/02/2026 valued $106,008.13

Key Terms

American Depositary Shares, Restricted Stock Vesting, Form 144

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.

Restricted Stock Vesting regulatory

"04/02/2026 | Restricted Stock Vesting | Issuer"

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.

Form 144 regulatory

"144: Securities To Be Sold"

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.

FAQ

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

What does ZLAB's Form 144 report for proposed ADS sales?

It reports a proposed sale of 853 American Depositary Shares with a listed value of $17,442.57. The filing serves as notice of an intended resale under Rule 144 rather than evidence that a sale has occurred.

Who is the reported transferor in the ZLAB Form 144 excerpt?

The excerpt names Yajing Chen and shows transfers of 1,703 ADS on 03/13/2026 ($31,723.82) and 5,199 ADS on 04/02/2026 ($106,008.13). These lines record prior restricted vesting or transfers.

Does the Form 144 show ZLAB's total shares outstanding?

The filing includes a line showing 307,140,690 shares with a date of 04/06/2026. This number appears on the securities/issuer line in the provided excerpt and can be used as a reference point.

Is a sale completed when a Form 144 is filed for ZLAB?

No. Filing Form 144 notifies the SEC and market of a proposed resale under Rule 144; it does not confirm execution. Actual sales would be reflected in subsequent trade records or amended filings.

What does the entry 'Restricted Stock Vesting' mean in the filing?

It indicates that certain ADS originated from a restricted stock vesting event dated 04/02/2026. This labels the transfer source as compensation-related, as shown in the excerpt.

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

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Accepted by SEC EDGAR 04/06/2026 - 03:04 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	853	17442.57	307140690	04/06/2026	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	04/02/2026	Restricted Stock Vesting	Issuer			853	04/02/2026	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
Yajing Chen 899 Halei Road Building B, Pudong Shanghai F4 201203	American Depositary Shares	04/02/2026	5199	106008.13

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	04/06/2026
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)