Zai Lab Officer's Stock Sales Continue: $600K Disposed in Past 3 Months

Rhea-AI Filing Summary

Zai Lab executive Yajing Chen filed Form 144 indicating intent to sell 2,675 American Depositary Shares with an aggregate market value of $96,651.76. The sale is scheduled for June 26, 2025, through Fidelity Brokerage Services on NASDAQ.

The shares were acquired on June 25, 2025, through restricted stock vesting as part of compensation. The filing notes that the sale is partially intended to cover tax obligations from the vested equity award distribution.

Previous trading activity by Chen in the past 3 months includes:

• June 2, 2025: Sold 9,618 shares for $288,540.00
• April 4, 2025: Sold 924 shares for $30,592.25
• April 2, 2025: Sold 5,280 shares for $189,521.38

The company has approximately 486.85 million shares outstanding. The filing was signed by Wade Moss as a representative of Fidelity Brokerage Services, acting as attorney-in-fact for Chen.

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	4560 JINKE ROAD BLDG. 1, 4F, PUDONG SHANGHAI CHINA 201210
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	2675	96651.76	486853250	06/26/2025	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	06/25/2025	Restricted Stock Vesting	Issuer			2675	06/25/2025	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 4560 Jinke Road Bldg. 1, 4th Floor, Pudong Shanghai F4 201210	American Depositary Shares	04/02/2025	5280	189521.38
Yajing Chen 4560 Jinke Road Bldg. 1, 4th Floor, Pudong Shanghai F4 201210	American Depositary Shares	04/04/2025	924	30592.25
Yajing Chen 4560 Jinke Road Bldg. 1, 4th Floor, Pudong Shanghai F4 201210	American Depositary Shares	06/02/2025	9618	288540.00

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	06/26/2025
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/Wade Moss, 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)

FAQ

How many ZLAB shares is Officer Chen Yajing planning to sell according to the Form 144 filed on June 28, 2025?

According to the Form 144 filing, Officer Chen Yajing plans to sell 2,675 American Depositary Shares of Zai Lab Limited (ZLAB) through Fidelity Brokerage Services LLC, with an aggregate market value of $96,651.76.

What is the reason for ZLAB Officer Chen Yajing's planned stock sale in June 2025?

The Form 144 filing indicates the sale is to cover a tax obligation resulting from the settlement of a vested equity award distribution. The shares were acquired through Restricted Stock Vesting on June 25, 2025.

How many ZLAB shares has Chen Yajing sold in the past 3 months before this Form 144 filing?

In the three months prior to this filing, Chen Yajing sold a total of 15,822 American Depositary Shares in three transactions: 5,280 shares on April 2, 2025 ($189,521.38), 924 shares on April 4, 2025 ($30,592.25), and 9,618 shares on June 2, 2025 ($288,540.00).

What is the total number of ZLAB shares outstanding as of June 2025?

According to the Form 144 filing, Zai Lab Limited (ZLAB) had 486,853,250 shares outstanding at the time of the filing in June 2025.

When does Chen Yajing plan to execute the ZLAB share sale?

According to the Form 144 filing, the approximate date of sale is indicated as June 26, 2025, with the shares to be sold on the NASDAQ exchange through Fidelity Brokerage Services LLC.