{"url_path":"/sec/cycn/10-q/2026/item-6","section_key":"item-6","section_title":"Item 6 Exhibits","topic":"sec","document":{"doc_type":"10-Q","doc_date":"2026-05-12","source_url":"https://www.sec.gov/Archives/edgar/data/1755237/0001193125-26-219478-index.html","accession_number":"0001193125-26-219478","cik":"0001755237","ticker":"CYCN","issuer_name":"Korsana Biosciences, Inc.","edgar_url":"https://www.sec.gov/Archives/edgar/data/1755237/0001193125-26-219478-index.html","primary_entity_key":"0001755237","primary_entity_name":"Cyclerion Therapeutics, Inc."},"word_count":206,"has_tables":true,"body_markdown":"Item 6. Exhibits\n\nSee the Exhibit Index on the following page of this Quarterly Report on Form 10-Q.\n\n \n\n41\n\n \n\nEXHIBIT INDEX\n\n \n\nExhibit\n\nNo.\n\n \n\nDescription\n\n \n\n \n\n \n\n[31.1](cycn-ex31_1.htm)\n\n \n\n[Certificate of Chief Executive Officer (Principal Executive Officer) pursuant to Section 302 of the Sarbanes-Oxley Act of 2002](cycn-ex31_1.htm)\n\n[31.2](cycn-ex31_2.htm)\n\n \n\n[Certificate of Chief Financial Officer (Principal Financial Officer) pursuant to Section 302 of the Sarbanes-Oxley Act of 2002](cycn-ex31_2.htm)\n\n[32.1](cycn-ex32_1.htm)\n\n \n\n[Certificate of Chief Executive Officer (Principal Executive Officer) pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002](cycn-ex32_1.htm)\n\n[32.2](cycn-ex32_2.htm)\n\n \n\n[Certificate of Chief Financial Officer (Principal Financial Officer) pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002](cycn-ex32_2.htm)\n\n101.INS\n\n \n\nInline XBRL Instance Document.\n\n101.SCH\n\n \n\nInline XBRL Taxonomy Extension Schema Document.\n\n104\n\n \n\nCover Page Interactive Data File.\n\n \n\n \n\n \n\n42\n\n \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, thereunto duly authorized.\n\n \n\nCYCLERION THERAPEUTICS, INC.\n\nBy:\n\n/s/ Regina Graul\n\nName:\n\nRegina Graul\n\nTitle:\n\nPresident and Chief Executive Officer (Principal Executive Officer)\n\n \n\n \n\nBy:\n\n/s/ Rhonda Chicko\n\n \n\nName:\n\nRhonda Chicko\n\n \n\nTitle:\n\nChief Financial Officer (Principal Financial and Accounting Officer)\n\n \n\nDate: May 12, 2026\n\n \n\n43"}