Insider reports multiple ADS sales on Nasdaq

ZLAB insider reported proposed and completed sales of American Depositary Shares (ADS).

Rhea-AI Filing Summary

ZLAB insider reported proposed and completed sales of American Depositary Shares (ADS). The filing lists multiple ADS dispositions by Ying Du, including 50,000-share transactions dated 03/04/2026, 03/05/2026, 03/06/2026, 03/09/2026 and 05/13/2026. Several other smaller ADS sales are shown in March and April 2026.

Insights

Corporate Governance Analyst

Routine insider dispositions of ADS reported across multiple dates.

The excerpt lists multiple sales of American Depositary Shares by a named holder, with several 50,000-share transactions dated in March and May 2026. The filing is a regulatory notice of proposed or completed sales rather than narrative commentary on company operations.

These transactions are documented with dollar amounts per line; cash‑flow recipients are the selling holder. Subsequent filings may disclose further dispositions or confirmations of settlement.

Key Figures

Single large sale examples: 50,000 shares Proceeds example: $958,155.00 Proceeds example: $961,055.00 +2 more

5 metrics

Single large sale examples 50,000 shares transactions on 03/04/2026, 03/05/2026, 03/06/2026, 03/09/2026, 05/13/2026

Proceeds example $958,155.00 proceeds linked to 50,000 shares on 03/04/2026

Proceeds example $961,055.00 proceeds linked to 50,000 shares on 03/05/2026

Proceeds example $970,935.00 proceeds linked to 50,000 shares on 03/06/2026

Broker Fidelity Brokerage Services LLC listed broker for the transactions

Key Terms

Form 144, American Depositary Shares, Option Granted

3 terms

Form 144 regulatory

"144: Securities To Be Sold"

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 | 05/14/2026 | Option Granted - 08/25/2016"

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.

Option Granted financial

"Option Granted - 08/25/2016 | Issuer | 50000 | 05/14/2026 | Cash"

FAQ

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

What ADS sales did Ying Du report for ZLAB?

Ying Du reported multiple sales of American Depositary Shares, including 50,000-share transactions on 03/04/2026, 03/05/2026, 03/06/2026, 03/09/2026, and 05/13/2026. Smaller sales in March and April 2026 are also listed.

What dollar amounts are shown for the ADS transactions?

The filing shows line-item proceeds such as $958,155.00, $961,055.00, $970,935.00, $951,465.00, and $998,470.00 linked to the 50,000-share entries on the listed dates.

Do these entries indicate option exercises or cash sales?

The excerpt includes an entry labeled Option Granted - 08/25/2016 with a Cash designation dated 05/14/2026, indicating at least one sale arose from an option exercise followed by a cash transaction as documented in the form.

Where were the ADS transactions reported to trade?

The securities are identified as American Depositary Shares traded on NASDAQ and the file lists the broker as Fidelity Brokerage Services LLC with an address in Smithfield, RI, in the transaction header.

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

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Accepted by SEC EDGAR 05/14/2026 - 04:17 PM EDT Learn about SEC filing dates

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	50000	1004577.99	340336080	05/14/2026	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	05/14/2026	Option Granted - 08/25/2016	Issuer			50000	05/14/2026	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
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
Ying Du 899 Halei Road, Building B Pudong Shanghai F4 201203	American Depositary Shares	04/02/2026	5576	113695.19
Ying Du 899 Halei Road Building B, Pudong Shanghai F4 201203	American Depositary Shares	04/06/2026	2653	54249.87
Ying Du 899 Halei Road Building B, Pudong Shanghai F4 201203	American Depositary Shares	05/13/2026	50000	998470.00

144: Remarks and Signature

Remarks
Date of Notice	05/14/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	11/11/2025
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/ Tyler Johnson, 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)