ZLAB insider files Form 144 for ADS sales

ZLAB reported a Form 144 notice evidencing proposed sales of American Depositary Shares by Ying Du.

Accepted by SEC EDGAR 03/11/2026 - 03:21 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

ZLAB reported a Form 144 notice evidencing proposed sales of American Depositary Shares by Ying Du. The filing lists four dispositions of 50,000 ADS each on 03/04/2026, 03/05/2026, 03/06/2026 and 03/09/2026, with reported gross proceeds shown per trade.

FAQ

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

What did ZLAB's Form 144 disclose about insider sales?

The Form 144 discloses proposed sales by Ying Du totaling four transactions of 50,000 ADS each. The filing lists trade dates of 03/04/2026, 03/05/2026, 03/06/2026, and 03/09/2026, with gross proceeds reported for each trade.

Who is the seller named in the ZLAB Form 144?

The seller is listed as Ying Du with an address in Pudong, Shanghai. The filing identifies Ying Du as the person offering the ADS on the specified trade dates in March 2026.

How many ADS and what proceeds are shown per trade in the filing?

Each reported transaction is for 50,000 ADS. The filing shows gross proceeds of 958,155.00, 961,055.00, 970,935.00, and 951,465.00 for the trades dated in March 2026, respectively.

Are the ADS sales in the Form 144 listed as restricted or vested?

The filing notes a Restricted Stock Vesting entry dated 03/10/2026 under securities to be sold, indicating the ADS relate to compensation vesting as described in the form.

On which exchange are the ZLAB ADS quoted according to the filing?

The filing indicates the American Depositary Shares are listed on NASDAQ. The security rows reference NASDAQ in the securities information section of the Form 144 excerpt.

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

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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	0001731790
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	Du Ying
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
Relationship to Issuer	Director

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	1067	20362.09	307140690	03/11/2026	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	03/10/2026	Restricted Stock Vesting	Issuer			1067	03/10/2026	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
Ying Du 899 Halei Road Building B, Pudong SHANGHAI F4 201203	American Depositary Shares	03/04/2026	50000	958155.00
Ying Du 899 Halei Road Building B, Pudong SHANGHAI F4 201203	American Depositary Shares	03/05/2026	50000	961055.00
Ying Du 899 Halei Road Building B, Pudong SHANGHAI F4 201203	American Depositary Shares	03/06/2026	50000	970935.00
Ying Du 899 Halei Road Building B, Pudong SHANGHAI F4 201203	American Depositary Shares	03/09/2026	50000	951465.00

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	03/11/2026
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/ Audrey McMillen, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Ying Du
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)