Insider sale notice: Zai Lab 50,000 ADS via Fidelity on 08/08/2025

Rhea-AI Filing Summary

Zai Lab Limited has filed a Form 144 disclosing a proposed sale of 50,000 American Depositary Shares (ADS) through Fidelity Brokerage Services LLC on 08/08/2025, with an aggregate market value reported as $1,737,156.02 and 421,725,450 ADS outstanding. The notice states these ADS were acquired under options granted on 10/22/2015 and lists the acquisition and payment date as 08/08/2025 with payment in cash.

The filing also itemizes seven prior ADS sales by Ying Du between 05/09/2025 and 07/02/2025, showing transaction sizes and gross proceeds for each. The form includes the standard Rule 144 representation that the seller is not aware of any undisclosed material adverse information about the issuer.

Positive

• Transparency: The Form 144 discloses a proposed sale of 50,000 ADS with an aggregate market value of $1,737,156.02.
• Transaction details provided: Broker (Fidelity Brokerage Services LLC), exchange (NASDAQ), and approximate sale date (08/08/2025) are identified.
• Acquisition origin disclosed: ADS were acquired under options granted 10/22/2015 and payment is listed as cash on 08/08/2025.
• Prior sales documented: Seven prior ADS sales by Ying Du from 05/09/2025 to 07/02/2025 are itemized with gross proceeds.

Negative

• None.

Insights

Securities Analyst

Routine Rule 144 sale disclosure; limited apparent market impact given the disclosed sizes.

The filing documents a planned sale of 50,000 ADS valued at $1,737,156.02 via Fidelity on 08/08/2025. It also lists seven prior sales by the same named seller between 05/09/2025 and 07/02/2025, with individual gross proceeds reported. From a market perspective, this is a standard insider sale notice under Rule 144: the broker and exchange are identified, acquisition origin is disclosed

Corporate Governance Expert

Disclosure aligns with Rule 144 compliance; prior transactions are transparently reported.

The Form 144 identifies the broker (Fidelity Brokerage Services LLC), the target exchange (NASDAQ), and details of acquisition 10/22/2015 with payment in cash on 08/08/2025), which supports regulatory compliance on insider sales. The seller also affirms no undisclosed material adverse information. The filing does not present any governance actions, leadership changes, or regulatory concerns; it functions as a required disclosure of share disposition activity.

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	1737156.02	421725450	08/08/2025	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	08/08/2025	Options Granted-10/22/2015	Issuer			50000	08/08/2025	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 4560 Jinke Road Bldg. 1, Fourth Floor Pudong Shanghai F4 201210	American Depositary Shares	05/09/2025	50000	1481140.00
Ying Du 4560 Jinke Road Bldg. 1, Fourth Floor Pudong Shanghai F4 201210	American Depositary Shares	05/12/2025	50000	1472165.00
Ying Du 4560 Jinke Road Bldg. 1, Fourth Floor Pudong Shanghai F4 201210	American Depositary Shares	05/13/2025	50000	1428650.00
Ying Du 4560 Jinke Road, Bldg. 1 Fourth Floor Pudong Shanghai F4 201210	American Depositary Shares	05/14/2025	46389	1302858.26
Ying Du 4560 Jinke Road Bldg. 1, Fourth Floor Pudong Shanghai F4 201210	American Depositary Shares	06/26/2025	23669	855196.47
Ying Du 4560 Jinke Road Bldg. 1, Fourth Floor Pudong Shanghai F4 201210	American Depositary Shares	06/30/2025	6918	245723.90
Ying Du 4560 Jinke Road, Bldg. 1 Fourth Floor Pudong Shanghai F4 201210	American Depositary Shares	07/02/2025	7072	249143.73

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 does Zai Lab (ZLAB) Form 144 disclose?

The filing discloses a proposed sale of 50,000 American Depositary Shares via Fidelity on 08/08/2025 with an aggregate market value of $1,737,156.02.

Who is listed as selling ADS in the filing?

The filing lists Ying Du as the seller in prior transactions and identifies the person for whose account the securities are to be sold in the notice.

How were the ADS being sold acquired?

The ADS were acquired under options granted on 10/22/2015, with the acquisition and payment date noted as 08/08/2025 and payment indicated as cash.

Which broker and exchange are involved in the proposed sale?

The broker is Fidelity Brokerage Services LLC and the securities exchange named is NASDAQ.

Does the filing report prior sales of ZLAB ADS by the same person?

Yes. The filing itemizes seven prior ADS sales by Ying Du between 05/09/2025 and 07/02/2025, each with the amount sold and gross proceeds.