[8-K] Zai Lab Ltd Reports Material Event

Rhea-AI Filing Summary

Zai Lab Limited entered into a maximum amount guarantee and established a revolving credit facility to support working capital in mainland China. The company will guarantee working capital loans of up to RMB300 million (approximately $42.1 million) from Industrial Bank Co., Ltd., Shanghai Gubei Branch, to its wholly owned subsidiary, Zai Lab (Shanghai) Co., Ltd.

The RMB300 million revolving credit facility is available until May 5, 2026. Each working capital loan is expected to have a one‑year term, with specific amounts, terms, and interest rates set in loan‑level documents. The credit line includes customary representations, warranties, and covenants, including a requirement to obtain prior written consent from the lender for transactions that could adversely impact debt repayment ability, such as mergers, spin-offs, equity transfers, external investments, or substantial debt increases.

As of this report, Zai Lab Shanghai has not entered into any working capital loans under the facility.

Insights

Capital structure analyst

Neutral: subsidiary credit line with parent guarantee; no draw yet.

Zai Lab guaranteed up to RMB300 million in working capital loans for its Shanghai subsidiary via a revolving credit facility with Industrial Bank. The facility is available until May 5, 2026, with loans expected to have one‑year terms and deal‑specific rates.

The agreements include customary covenants and require lender consent for potentially material corporate actions that could affect repayment ability. This is a financing arrangement rather than an equity issuance, and the impact depends on future borrowings and terms set in specific loan documents.

No loans have been entered into under the facility as of the report, so leverage and interest expense effects are not active. Subsequent filings may provide details when individual loans are executed.

false000170429200017042922025-10-132025-10-130001704292dei:AdrMember2025-10-132025-10-130001704292us-gaap:CommonStockMember2025-10-132025-10-13

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): October 13, 2025

________________________

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 1.01    Entry into a Material Definitive Agreement.

Zai Lab Limited (the “Company”) identified an additional opportunity to access capital denominated in RMB through a debt facility with Industrial Bank Co., Ltd. on favorable commercial terms to support our working capital needs in mainland China. As a result, on October 13, 2025, the Company entered into a maximum amount guarantee contract (the “Guarantee”) with Industrial Bank Co., Ltd., Shanghai Gubei Branch (“CIB”) pursuant to which the Company will guarantee working capital loans of up to RMB300 million (approximately $42.1 million) from CIB to our wholly-owned subsidiary, Zai Lab (Shanghai) Co., Ltd. (“Zai Lab Shanghai”), and Zai Lab Shanghai entered into a credit line contract with CIB with respect to the RMB300 million revolving credit facility (the “Credit Contract”). The credit facility will be available until May 5, 2026, and key terms of the specific working capital loans, including the amount, term, and interest rate, will be included in the specific transaction documents. Each working capital loan is expected to have a term of one year. The Credit Contract contains customary representations and warranties and affirmative and restrictive covenants, including a requirement to obtain prior written consent from CIB before engaging in certain transactions that could have an adverse impact on its debt repayment ability, including mergers, spin-offs, equity transfers, and other material matters such as external investments or substantial increases in debt financings.

The description of the Guarantee and Credit Contract contained herein is qualified in its entirety by reference to the Guarantee, a copy of which is attached hereto as Exhibit 10.1, and the Credit Contract, a copy of which is attached hereto as Exhibit 10.2, each of which is incorporated herein by reference.

To date, Zai Lab Shanghai has not entered into any working capital loans under this debt facility.

Item 2.03    Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.

The disclosure set forth in Item 1.01 above is hereby incorporated by reference into this item.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits

Exhibit No.						Description
10.1+						Unofficial English Translation of Maximum Amount Guarantee Contract, dated as of October 13, 2025, by and between Zai Lab Limited and Industrial Bank Co., Ltd., Shanghai Gubei Branch
10.2+						Unofficial English Translation of Line of Credit Contract, dated as of October 13, 2025, by and between Zai Lab (Shanghai) Co., Ltd. and Industrial Bank Co., Ltd., Shanghai Gubei Branch
104						The cover page of this report is formatted in Inline XBRL

+ Portions of this exhibit have been redacted pursuant to Item 601(b)(10)(iv) of Regulation S-K.

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: October 16, 2025