Zai Lab director granted 22,371 ADSs

GAYNOR RICHARD reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

GAYNOR RICHARD reported acquisition or exercise transactions in this Form 4 filing.

Zai Lab Ltd director Richard Gaynor received a stock grant in the form of American Depositary Shares (ADSs). On June 17, 2026, he was awarded 22,371 ADSs at no cash cost as a compensation-related grant. Following this award, he directly holds 79,001 ADSs. Each ADS represents ten ordinary shares of Zai Lab, and the ADSs and ordinary shares are fully fungible. The granted shares are restricted and will vest in full on June 17, 2027, provided he continues to serve on the company’s board of directors through that date.

Insider Trade Summary

Grant/Award: 22,371 shares

Grant/Award 1 txn

Insider GAYNOR RICHARD

Role Director

Type	Security	Shares	Price	Value
Grant/Award	American Depositary Shares	22,371	$0.00	$0.00

Holdings After Transaction: American Depositary Shares — 79,001 shares (Direct)

Footnotes (2)

1. F1. Each American Depositary Share ("ADS") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs.
2. F2. Represents restricted shares that vest in full on June 17, 2027, subject to the Reporting Person's continued service as a member of the issuer's board of directors through such vesting date.

Key Figures

ADSs granted: 22,371 ADSs Holding after transaction: 79,001 ADSs Grant price: $0.00 per ADS +2 more

5 metrics

ADSs granted 22,371 ADSs Grant on June 17, 2026 as compensation award

Holding after transaction 79,001 ADSs Director’s direct ownership after the June 17, 2026 grant

Grant price $0.00 per ADS Reported transaction price per share for the stock award

Vesting date June 17, 2027 Restricted shares vest in full on this date

ADS to ordinary ratio 1 ADS = 10 ordinary shares Each American Depositary Share represents ten ordinary shares

Key Terms

American Depositary Shares, restricted shares, vest, board of directors

4 terms

American Depositary Shares financial

"Each American Depositary Share ("ADS") represents ten Ordinary Shares of the issuer."

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 shares financial

"Represents restricted shares that vest in full on June 17, 2027, subject to the Reporting Person's continued service"

Restricted shares are company stock that cannot be sold or transferred immediately because they are subject to legal or contractual limits, such as a required holding period or performance conditions. They matter to investors because these locked-up shares can affect a company’s available stock for trading, future dilution, and insider incentives—imagine a gift that can’t be cashed until certain conditions are met, which changes when and how much supply can suddenly enter the market.

vest financial

"restricted shares that vest in full on June 17, 2027"

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

board of directors financial

"subject to the Reporting Person's continued service as a member of the issuer's board of directors"

The Board of Directors is a group of people chosen by a company's owners to help make big decisions and oversee how the company is run. They act like a team of advisors or managers, making sure the company stays on track and meets its goals. Their choices can influence the company's success and how it grows.

FAQ

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

What insider transaction did Zai Lab (ZLAB) report for Richard Gaynor?

Zai Lab reported that director Richard Gaynor received a grant of 22,371 American Depositary Shares as a stock award. The ADSs were awarded at no cash price and represent a compensation-related acquisition rather than an open-market purchase or sale of shares.

How many Zai Lab (ZLAB) ADSs does Richard Gaynor hold after this grant?

After the June 17, 2026 grant, Richard Gaynor holds 79,001 American Depositary Shares of Zai Lab directly. This total includes the 22,371 newly granted ADSs and reflects his updated ownership position as reported in the Form 4 insider transaction filing.

What are the vesting terms of Richard Gaynor’s new Zai Lab (ZLAB) share award?

The 22,371 granted shares are restricted and vest in full on June 17, 2027. Vesting is contingent on Richard Gaynor continuing to serve as a member of Zai Lab’s board of directors through that vesting date, according to the Form 4 footnote disclosure.

What does each Zai Lab (ZLAB) American Depositary Share represent?

Each Zai Lab American Depositary Share represents ten ordinary shares of the company. The filing notes that the ADSs and ordinary shares are fully fungible, meaning they can be exchanged, but the Form 4 reports holdings and the grant amounts in terms of ADSs only.

Was Richard Gaynor’s Zai Lab (ZLAB) transaction a market buy or sell?

No, the transaction was not a market buy or sell. It is coded as a grant or award acquisition, meaning Gaynor received 22,371 ADSs as compensation. The transaction price per share is reported as zero, indicating no cash was paid in this award.

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

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Accepted by SEC EDGAR 06/22/2026 - 04:08 PM EDT Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

GAYNOR RICHARD

(Last) (First) (Middle)

C/O ZAI LAB LIMITED

314 MAIN STREET, 4TH FLOOR, SUITE 100

(Street)

CAMBRIDGE MASSACHUSETTS 02142

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
Zai Lab Ltd [ ZLAB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/17/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
American Depositary Shares(1)	06/17/2026		A		22,371(2)	A	$0	79,001	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Each American Depositary Share ("ADS") represents ten Ordinary Shares of the issuer. Our ADSs and Ordinary Shares are fully fungible. For purposes of this Form 4, we are reporting this in terms of ADSs.

2. Represents restricted shares that vest in full on June 17, 2027, subject to the Reporting Person's continued service as a member of the issuer's board of directors through such vesting date.

	/s/ Bruce Blefeld, Attorney-in-Fact	06/22/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)