[144] Zai Lab Ltd SEC Filing

Rhea-AI Filing Summary

ZLAB filed a Form 144 reporting a proposed sale of 5,576 American Depositary Shares and recent dispositions by Ying Du.

The filing lists 5,576 ADS tied to Restricted Stock Vesting with an issuer designation dated 04/01/2026. It also records multiple past sales by Ying Du: four sales of 50,000 ADS on 03/04/2026, 03/05/2026, 03/06/2026, and 03/09/2026, and 1,067 ADS on 03/11/2026, each with reported gross proceeds shown alongside.

Insights

Securities Counsel

Form 144 notifies the market of a proposed resale of restricted ADS and records recent dispositions.

Form 144 is a regulatory notice that a holder intends to sell restricted securities under Rule 144’s resale framework. The filing lists a proposed sale of 5,576 ADS attributed to restricted stock vesting and shows prior open-market dispositions by the same holder in March 2026.

Settlement mechanics and timing depend on broker processing and compliance with Rule 144 conditions; subsequent Form 4/5 or transaction confirmations may appear in later filings.

Key Figures

Proposed ADS sale: 5,576 ADS Sale on 03/04/2026: 50,000 ADS Sale on 03/05/2026: 50,000 ADS +3 more

6 metrics

Proposed ADS sale 5,576 ADS Restricted Stock Vesting dated 04/01/2026

Sale on 03/04/2026 50,000 ADS Disposition by Ying Du, gross proceeds shown $958,155.00

Sale on 03/05/2026 50,000 ADS Disposition by Ying Du, gross proceeds shown $961,055.00

Sale on 03/06/2026 50,000 ADS Disposition by Ying Du, gross proceeds shown $970,935.00

Sale on 03/09/2026 50,000 ADS Disposition by Ying Du, gross proceeds shown $951,465.00

Sale on 03/11/2026 1,067 ADS Disposition by Ying Du, gross proceeds shown $20,362.09

Key Terms

Form 144, American Depositary Shares, Restricted Stock Vesting

3 terms

Form 144 regulatory

"Form 144 reporting proposed sale of restricted securities"

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.

American Depositary Shares market

"American Depositary Shares listed as the security to be sold"

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 financial

"Listed as the reason/method for the 04/01/2026 ADS"

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 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	5576	113695.19	307140690	04/02/2026	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	04/01/2026	Restricted Stock Vesting	Issuer			5576	04/01/2026	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
Ying Du 899 Halei Road Building B, Pudong Shanghai F4 201203	American Depositary Shares	03/11/2026	1067	20362.09

144: Remarks and Signature

Remarks

Date of Notice

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)