zlab-20260518

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

________________________

FORM 8-K

________________________

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): May 18, 2026

________________________

ZAI LAB LIMITED

(Exact name of registrant as specified in its charter)

________________________


Cayman Islands	001-38205	98-1144595
(State or other jurisdiction of incorporation)	(Commission File Number)	(I.R.S. Employer Identification No.)


899 Halei Road Building B, Pudong Shanghai China			201203
314 Main Street 4th Floor, Suite 100 Cambridge, MA, USA			02142
(Address of principal executive offices)			(Zip Code)

+86 21 6163 2588

+1 857 706 2604

(Registrant’s Telephone Number, Including Area Code)

Not Applicable

(Former name or former address, if changed since last report)

________________________

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:


☐			Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐			Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐			Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐			Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading

Symbol(s)

Name of each exchange

on which registered

American Depositary Shares, each representing 10 Ordinary Shares, par value $0.000006 per share

ZLAB

The Nasdaq Global Market

Ordinary Shares, par value $0.000006 per share*

9688

The Stock Exchange of Hong Kong Limited

*Included in connection with the registration of the American Depositary Shares with the Securities and Exchange Commission. The ordinary shares are not registered or listed for trading in the United States but are listed for trading on The Stock Exchange of Hong Kong Limited

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On May 18, 2026, the Board of Directors of Zai Lab Limited (the “Company”) determined that Mr. Josh Smiley will cease serving as President and Chief Operating Officer of the Company, effective as of May 18, 2026, and his last day of employment with the Company will be May 22, 2026. The responsibilities previously associated with such positions have been assumed by Samantha Du, the Company’s Board Chair, Founder and Chief Executive Officer, and other members of the Company’s management team.

Mr. Smiley will receive severance pursuant to his existing employment agreement, subject to his execution of a customary release.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.


		ZAI LAB LIMITED

	By:	/s/ F. Ty Edmondson
	Name:	F. Ty Edmondson
	Title:	Chief Legal Officer and Corporate Secretary

Date: May 21, 2026

Zai Lab Limited filed SEC Form 8-K: Leadership Update