{"url_path":"/sec/zlab/8-k/2026-05-21/cover-page","section_key":"cover-page","section_title":"Cover Page","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-05-21","source_url":"https://www.sec.gov/Archives/edgar/data/1704292/0001628280-26-037387-index.html","accession_number":"0001628280-26-037387","cik":"0001704292","ticker":"ZLAB","issuer_name":"Zai Lab Ltd","edgar_url":"https://www.sec.gov/Archives/edgar/data/1704292/0001628280-26-037387-index.html","primary_entity_key":"0001704292","primary_entity_name":"Zai Lab Ltd"},"word_count":383,"has_tables":true,"body_markdown":"zlab-20260518\nfalse000170429200017042922026-05-182026-05-180001704292dei:AdrMember2026-05-182026-05-180001704292us-gaap:CommonStockMember2026-05-182026-05-18\n\nUNITED STATES\n\nSECURITIES AND EXCHANGE COMMISSION\n\nWashington, D.C. 20549\n\n________________________\n\nFORM 8-K\n\n________________________\n\nCURRENT REPORT\n\nPursuant to Section 13 or 15(d)\n\nof the Securities Exchange Act of 1934\n\nDate of Report (Date of earliest event reported): May 18, 2026\n\n________________________\n\nZAI LAB LIMITED\n\n(Exact name of registrant as specified in its charter)\n\n________________________\n\nCayman Islands001-3820598-1144595\n\n(State or other jurisdiction of\nincorporation)(Commission\nFile Number)(I.R.S. Employer\nIdentification No.)\n\n899 Halei Road\n\nBuilding B, Pudong\n\nShanghai China\n\n201203\n\n314 Main Street\n4th Floor, Suite 100\nCambridge, MA, USA02142\n\n(Address of principal executive offices)(Zip Code)\n\n+86 21 6163 2588\n\n+1 857 706 2604\n\n(Registrant’s Telephone Number, Including Area Code)\n\nNot Applicable\n\n(Former name or former address, if changed since last report)\n\n________________________\n\nCheck 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:\n\n☐Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)\n\n☐\nSoliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)\n\n☐\nPre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))\n\n☐\nPre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))\n\nSecurities registered pursuant to Section 12(b) of the Act:\n\nTitle of each class\nTrading\n\nSymbol(s)\n\nName of each exchange\n\non which registered\n\nAmerican Depositary Shares, each representing 10 Ordinary Shares, par value $0.000006 per shareZLABThe Nasdaq Global Market\n\nOrdinary Shares, par value $0.000006 per share*9688The Stock Exchange of Hong Kong Limited\n\n*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\n\nIndicate 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).\n\nEmerging growth company ☐\n\nIf 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. ☐"}