ZLAB (NASDAQ: ZLAB) Form 144 shows Ying Du ADS sales and vesting event

Rhea-AI Filing Summary

ZLAB reported insider dispositions via Form 144 listing sales of American Depositary Shares. The filing lists 24,543 ADS indicated under "Securities To Be Sold" with an associated dollar figure of $428,552.69 and multiple past sale transactions by Ying Du between 04/02/2026 and 05/18/2026.

The transactions shown are labeled as related to Compensation and a Restricted Stock Vesting event on 06/25/2026. The filing names Fidelity Brokerage Services LLC and lists NASDAQ as the market identifier.

Insights

Securities Compliance Analyst

Routine Form 144 sale disclosures by an insider, showing specific ADS sale dates and proceeds.

The excerpt lists $428,552.69 alongside 24,543 ADS under "Securities To Be Sold" and shows completed sales by Ying Du on multiple dates in April–May 2026, with individual proceeds recorded for each trade. The filing also references a Restricted Stock Vesting event dated 06/25/2026.

These items are procedural disclosures required when insiders sell shares; timing and cash‑flow treatment are those recorded per transaction lines in the excerpt. Subsequent filings or broker confirmations would carry complementary settlement details.

Equity Markets Analyst

Multiple small-to-moderate ADS dispositions by a named holder across April–May 2026.

The listing shows discrete sales by Ying Du: 5,576 ADS on 04/02/2026 for $113,695.19, and several sales of 50,000 ADS on 05/13/2026, 05/14/2026, 05/15/2026, and 05/18/2026 with stated proceeds ranging from $949,765.00 to $1,034,110.00. The record ties a portion of holding activity to compensation vesting on 06/25/2026

Cash‑flow recipients and any trading plan language are not present in the excerpt; the shown figures document executed sale amounts and the vesting event.

Key Figures

ADS listed to be sold: 24,543 shares Associated dollar figure: $428,552.69 Sale - 04/02/2026: 5,576 shares +4 more

7 metrics

ADS listed to be sold 24,543 shares listed under "Securities To Be Sold"

Associated dollar figure $428,552.69 appears alongside 24,543 ADS in securities info

Sale - 04/02/2026 5,576 shares Ying Du sale on 04/02/2026 for $113,695.19

Sale - 05/13/2026 50,000 shares Ying Du sale on 05/13/2026 for $998,470.00

Sale - 05/14/2026 50,000 shares Ying Du sale on 05/14/2026 for $1,004,580.00

Sale - 05/15/2026 50,000 shares Ying Du sale on 05/15/2026 for $1,037,110.00

Sale - 05/18/2026 50,000 shares Ying Du sale on 05/18/2026 for $949,765.00

Key Terms

Form 144, American Depositary Shares, Restricted Stock Vesting, Compensation

4 terms

Form 144 regulatory

"listed in header lines as the filing type and used to report insider sales"

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

"repeatedly used as the security sold in the transaction lines"

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 compensation

"appears in the securities-to-be-sold row dated 06/25/2026"

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.

Compensation corporate

"used as the stated transaction purpose in the securities-to-be-sold section"

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Available on EDGAR 06/26/2026 - 03:12 PM Accepted by SEC EDGAR 06/26/2026 - 03:12 PM 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
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	24543	428552.69	340336080	06/26/2026	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	06/25/2026	Restricted Stock Vesting	Issuer			24543	06/25/2026	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	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
Ying Du 899 Halei Road Building B, Pudong Shanghai F4 201203	American Depositary Shares	05/14/2026	50000	1004580.00
Ying Du 899 Halei Road Building B, Pudong Shanghai F4 201203	American Depositary Shares	05/15/2026	50000	1037110.00
Ying Du 899 Halei Road Building B, Pudong Shanghai F4 201203	American Depositary Shares	05/18/2026	50000	949765.00

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)

FAQ

What does ZLAB's Form 144 disclose about insider sales?

The filing discloses sales of American Depositary Shares totaling 24,543 ADS with an associated figure of $428,552.69. It also lists multiple executed trades by Ying Du between 04/02/2026 and 05/18/2026.

Who is the named seller in the Form 144 excerpt for ZLAB?

The excerpt names Ying Du with an address in Pudong, Shanghai, and lists multiple ADS sales on specific dates in April–May 2026, each with the reported proceeds in dollars.

Are any of the disclosed shares tied to compensation or vesting?

Yes. The filing references a Restricted Stock Vesting event dated 06/25/2026 and labels the transaction purpose as Compensation in the securities-to-be-sold section.

What sale amounts and dates are shown for Ying Du in the excerpt?

Examples shown include 5,576 ADS on 04/02/2026 for $113,695.19 and repeated sales of 50,000 ADS on 05/13/2026–05/18/2026 with proceeds between $949,765.00 and $1,034,110.00.

Which broker and market are listed in the filing excerpt?

The excerpt lists Fidelity Brokerage Services LLC and indicates NASDAQ as the market identifier in the securities information section.