Capital World Investors reports 0.2% Zai Lab (ZLAB) stake

Rhea-AI Filing Summary

Capital World Investors, a division of Capital Research and Management Company and its affiliates, reports beneficial ownership of 1,723,600 shares of Zai Lab Ltd. common stock. This represents 0.2% of the 1,119,628,030 shares it believes are outstanding.

The firm has sole voting and dispositive power over these shares and no shared power. It states the position is held in the ordinary course of business and not for the purpose of changing or influencing control of Zai Lab, and that it owns less than five percent of the class.

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 1)

Zai Lab Ltd.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

G9887T116

(CUSIP Number)

12/31/2025

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

SCHEDULE 13G

CUSIP No. G9887T116

1

Names of Reporting Persons

Capital World Investors

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

DELAWARE

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 1,723,600.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 1,723,600.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,723,600.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

0.2 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: Zai Lab Ltd.
(b)	Address of issuer's principal executive offices: 314 Main Street, 4th Floor, Suite 100, Cambridge, MA 02142
Item 2.
(a)	Name of person filing: Capital World Investors
(b)	Address or principal business office or, if none, residence: 333 SOUTH HOPE STREET, 55TH FLOOR, LOS ANGELES, CALIFORNIA 90071
(c)	Citizenship: N/A
(d)	Title of class of securities: Common Stock
(e)	CUSIP No.: G9887T116
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 1,723,600 ** **Capital World Investors ("CWI") is a division of Capital Research and Management Company ("CRMC"), as well as its investment management subsidiaries and affiliates Capital Bank and Trust Company, Capital International, Inc., Capital International Limited, Capital International Sarl, Capital International K.K., Capital Group Private Client Services, Inc., and Capital Group Investment Management Private Limited (together with CRMC, the "investment management entities"). CWI's divisions of each of the investment management entities collectively provide investment management services under the name "Capital World Investors." CWI is deemed to be the beneficial owner of 1,723,600 shares or 0.2% of the 1,119,628,030 shares believed to be outstanding.
(b)	Percent of class: 0.2 %
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 1,723,600
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 1,723,600
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under ?? 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Capital World Investors

Signature:	Timothy J. Moon
Name/Title:	Vice President and Senior Counsel, Capital Research and Management Company
Date:	02/10/2026

FAQ

What percentage of Zai Lab (ZLAB) does Capital World Investors report owning?

Capital World Investors reports owning 0.2% of Zai Lab’s common stock. This corresponds to beneficial ownership of 1,723,600 shares out of 1,119,628,030 shares it believes are outstanding, and reflects ownership of less than five percent of the class.

How many Zai Lab (ZLAB) shares does Capital World Investors beneficially own?

Capital World Investors beneficially owns 1,723,600 shares of Zai Lab common stock. The filing states it has sole voting and sole dispositive power over these shares, representing 0.2% of the 1,119,628,030 shares it believes are outstanding.

Does Capital World Investors seek to influence control of Zai Lab (ZLAB)?

No. Capital World Investors certifies the Zai Lab shares were acquired and are held in the ordinary course of business. It states they were not acquired and are not held to change or influence control of Zai Lab, consistent with a passive investment position.

What type of filing did Capital World Investors make regarding Zai Lab (ZLAB)?

Capital World Investors filed an amended Schedule 13G reporting its beneficial ownership in Zai Lab. Schedule 13G is used for passive holdings, and this amendment reflects its current position and confirms ownership of 5 percent or less of the class.

What voting and dispositive powers does Capital World Investors have over Zai Lab (ZLAB) shares?

Capital World Investors reports sole voting power and sole dispositive power over 1,723,600 Zai Lab shares. It reports no shared voting or shared dispositive power, indicating all reported authority over these shares rests solely with Capital World Investors.

Who signed the Zai Lab (ZLAB) Schedule 13G/A for Capital World Investors?

The filing was signed by Timothy J. Moon, identified as Vice President and Senior Counsel of Capital Research and Management Company. The signature section certifies, after reasonable inquiry, that the information provided about the Zai Lab holdings is true, complete, and correct.