Results of Operations and Financial Condition. On November 5, 2026, Zai Lab Limited issued a press release announcing its financial results for the third quarter of 2026. A copy of the press release is furnished as Exhibit 99.1 to this report and is incorporated herein by reference. The information contained in this report, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (t…

Entry into a Material Definitive Agreement. Securities Purchase Agreement On October 22, 2026, Zai Lab Limited (the “Company”) entered into a securities purchase agreement (the “Securities Purchase Agreement”) with certain accredited investors named therein (each, an “Investor” and collectively, the “Investors”), relating to the sale to the Investors of 11,340,000 American depositary shares of the Company (“ADSs”), each representing ten ordinary shares of the Company with a par value of $0.00…

Other Events. On October 22, 2026, the Company issued a press release announcing the Private Placement. A copy of this press release is attached to this Current Report on Form 8-K as Exhibit 99.2 and is incorporated herein by reference.

Unregistered Sales of Equity Securities. The disclosure regarding the securities to be sold and issued under the Securities Purchase Agreement set forth under

Results of Operations and Financial Condition. On August 6, 2026, Zai Lab Limited issued a press release announcing its financial results for the second quarter of 2026. A copy of the press release is furnished as Exhibit 99.1 to this report and is incorporated herein by reference. The information contained in this report, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (th…

President and Chief Operating Officer — Mr. Josh Smiley: Mr. Josh Smiley is leaving his roles as President and Chief Operating Officer.

Results of Operations and Financial Condition. On May 7, 2026, Zai Lab Limited issued a press release announcing its financial results for the first quarter of 2026. A copy of the press release is furnished as Exhibit 99.1 to this report and is incorporated herein by reference. The information contained in this report, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “E…

Results of Operations and Financial Condition. On February 26, 2026, Zai Lab Limited issued a press release announcing its financial results for the fourth quarter and full year ended December 31, 2025. A copy of the press release is furnished as Exhibit 99.1 to this report and is incorporated herein by reference. The information contained in this report, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exc…

Results of Operations and Financial Condition. On November 6, 2025, Zai Lab Limited issued a press release announcing its financial results for the third quarter of 2025. A copy of the press release is furnished as Exhibit 99.1 to this report and is incorporated herein by reference. The information contained in this report, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (t…

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 w…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The disclosure set forth in

Results of Operations and Financial Condition. On August 7, 2025, Zai Lab Limited issued a press release announcing its financial results for the second quarter of 2025. A copy of the press release is furnished as Exhibit 99.1 to this report and is incorporated herein by reference. The information contained in this report, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (th…

Results of Operations and Financial Condition. On May 8, 2025, Zai Lab Limited issued a press release announcing its financial results for the first quarter of 2025. A copy of the press release is furnished as Exhibit 99.1 to this report and is incorporated herein by reference. The information contained in this report, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “E…

Results of Operations and Financial Condition. On February 27, 2025, Zai Lab Limited issued a press release announcing its financial results for the fourth quarter and full year ended December 31, 2024. A copy of the press release is furnished as Exhibit 99.1 to this report and is incorporated herein by reference. The information contained in this report, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exc…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of the Registrant. The disclosure set forth in

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 Bank of Communications on favorable commercial terms to support our working capital needs in mainland China. As a result, on January 2, 2025, the Company entered into a guarantee contract (the “Guarantee”) with Bank of Communications Co., Ltd. Shanghai Zhangjiang Sub-Branch (“BOCOM”) pursuant to which the Company wil…

Entry into a Material Definitive Agreement. On November 14, 2024, Zai Lab Limited (the “Company”) entered into an underwriting agreement (the “Underwriting Agreement”) with Goldman Sachs (Asia) L.L.C., Jefferies LLC and Leerink Partners LLC, as representatives of the several underwriters named therein (collectively, the “Underwriters”), relating to the underwritten public offering of 7,843,137 American depositary shares of the Company (“ADSs”), each representing ten ordinary shares of the Com…

Results of Operations and Financial Condition. On November 12, 2024, Zai Lab Limited issued a press release announcing its financial results for the third quarter of 2024. A copy of the press release is furnished as Exhibit 99.1 to this report and is incorporated herein by reference. The information contained in this report, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (…

Results of Operations and Financial Condition. On August 6, 2024, Zai Lab Limited issued a press release announcing its financial results for the second quarter of 2024. A copy of the press release is furnished as Exhibit 99.1 to this report and is incorporated herein by reference. The information contained in this report, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (th…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of the Registrant. The disclosure set forth in

Entry into a Material Definitive Agreement. Zai Lab Limited (the “Company” or “we”) identified an additional opportunity to access capital denominated in RMB through a debt facility with China Merchants Bank on favorable commercial terms to support our working capital needs in mainland China. As a result, on July 5, 2024, the Company issued a maximum-amount irrevocable letter of guarantee (the “Guarantee”) to China Merchants Bank Co., Ltd., Shanghai Branch (“CMB”) pursuant to which the Compan…

The excerpt is incomplete and does not provide sufficient information to determine the nature of the event.

President, Head of Global Development, Neuroscience, Autoimmune and Infectious Diseases — Dr. Harald Reinhart: Dr. Harald Reinhart has decided to retire and will continue as a senior advisor.

Results of Operations and Financial Condition. On May 8, 2024, Zai Lab Limited issued a press release announcing its financial results for the first quarter of 2024. A copy of the press release is furnished as Exhibit 99.1 to this report and is incorporated herein by reference. The information contained in this report, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “E…

Results of Operations and Financial Condition. On February 27, 2024, Zai Lab Limited issued a press release announcing its financial results for the year ended December 31, 2023. A copy of the press release is furnished as Exhibit 99.1 to this report and is incorporated herein by reference. The information contained in this report, including Exhibit 99.1 attached hereto, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as am…