Zai Lab (NASDAQ: ZLAB) insider sale: Ying Du reports 50,000 ADS transactions

Rhea-AI Filing Summary

ZLAB reported proposed and recent insider sales of American Depositary Shares: a proposed sale of 50,000 ADS dated 03/06/2026 and two reported sales of 50,000 ADS each on 03/04/2026 and 03/05/2026 by Ying Du. The proposed sale is listed as an issuer option exercise with cash consideration and references an option granted on 08/25/2016.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

Relationship to Issuer

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	50000	959000.00	307140690	03/06/2026	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	03/06/2026	Option Granted - 08/25/2016	Issuer			50000	03/06/2026	Cash

* 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

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)

FAQ

What did the ZLAB Form 144 disclose about the number of ADS being sold?

The Form 144 shows 50,000 ADS proposed for sale on 03/06/2026. It also lists two sales of 50,000 ADS each on 03/04/2026 and 03/05/2026, attributed to Ying Du.

Who is the reporting person in the ZLAB Form 144 and what transactions are shown?

The reporting person is Ying Du, with sales recorded on 03/04/2026 and 03/05/2026. The filing also lists a proposed sale of 50,000 ADS on 03/06/2026 tied to an issuer option exercise.

What consideration and grant date are listed for the proposed ZLAB ADS sale?

The proposed sale on 03/06/2026 is shown as an issuer option exercise for cash, with the option originally granted on 08/25/2016. The filing ties the proposed sale to that grant.

What prices are disclosed for the recent ZLAB ADS sales in the Form 144?

The Form 144 lists prices of $958,155.00 for the 03/04/2026 sale and $961,055.00 for the 03/05/2026 sale. These figures appear alongside the 50,000 ADS transactions by Ying Du.

On what exchange are the ZLAB American Depositary Shares listed per the filing?

The filing shows the ADS are listed on NASDAQ. The securities section lists the class as American Depositary Shares and identifies NASDAQ as the trading market.