{"url_path":"/sec/goss/8-k/2026-09-11/item-9-01","section_key":"item-9-01","section_title":"Item 9.01 Financial Statements and Exhibits.","topic":"sec","document":{"doc_type":"8-K","doc_date":"2026-09-11","source_url":"https://www.sec.gov/Archives/edgar/data/1728117/0001728117-26-000094-index.html","accession_number":"0001728117-26-000094","cik":"0001728117","ticker":"GOSS","issuer_name":"Gossamer Bio, Inc.","edgar_url":"https://www.sec.gov/Archives/edgar/data/1728117/0001728117-26-000094-index.html","primary_entity_key":"0001728117","primary_entity_name":"Gossamer Bio, Inc."},"word_count":103,"has_tables":true,"body_markdown":"Item 9.01 Financial Statements and Exhibits.\n\n(d) Exhibits. \n\nExhibit\n\nNumber\nDescription\n\n3.1\n[Certificate of Amendment to the Amended and Restated Certificate of Incorporation of Gossamer Bio, Inc., effective September 10, 2026](ex31charteramendment.htm)\n\n99.1\n[Press release issued by Gossamer Bio, Inc., dated September 11, 2026](ex991revstockspliteffectiv.htm)\n\n104Cover page interactive data file (embedded with the inline XBRL document)\n\nSIGNATURES\n\nPursuant 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.\n\n \n\nGOSSAMER BIO, INC.\n\nDate: September 11, 2026By:/s/ Bryan Giraudo\n\nBryan Giraudo\n\nChief Financial Officer and Chief Operating Officer"}