Company facts
- Industry
- Pharmaceutical Preparations
- Headquarters
- Waltham, Massachusetts
- Most recent report
- 10-Q, filed Nov 5, 2026
- Incorporated
- Massachusetts
- Filings on record
- 392 filings
- On EDGAR
- CIK 1755237
- Fiscal year ends
- December
- Filer status
- Non-accelerated filer, Smaller reporting company
Financials 8 of 36
News 8 of 71
Prospectuses and Registrations 8 of 24
- S-8 Registration statement for an employee plan Nov 9, 2026
- 424B3 Prospectus supplement for an offering Jul 24, 2026
- S-4/A Registration statement for a merger or exchange, amended Jul 22, 2026
- S-4/A Registration statement for a merger or exchange, amended Jul 10, 2026
- S-4/A Registration statement for a merger or exchange, amended Jun 9, 2026
- S-4 Registration statement for a merger or exchange Apr 20, 2026
- 424B5 Prospectus supplement for an offering May 7, 2025
- S-3 Shelf registration statement May 6, 2025
Proxies 8 of 18
- DEF 14A Proxy statement for a shareholder vote Oct 15, 2026
- PRE 14A Preliminary proxy statement Oct 5, 2026
- DEFA14A Extra proxy material Apr 29, 2025
- DEF 14A Proxy statement for a shareholder vote Apr 29, 2025
- DEFA14A Extra proxy material Apr 29, 2024
- DEF 14A Proxy statement for a shareholder vote Apr 29, 2024
- DEFM14A Jun 20, 2023
- PREM14A Jun 9, 2023
Ownership 8 of 191
- 144 Notice of a proposed sale of restricted stock Oct 22, 2026
- SCHEDULE 13G/A Large holder reported a passive stake, amended Oct 15, 2026
- SCHEDULE 13G/A Large holder reported a passive stake, amended Oct 7, 2026
- 144 Notice of a proposed sale of restricted stock Sep 23, 2026
- 144 Notice of a proposed sale of restricted stock Sep 22, 2026
- SCHEDULE 13G Large holder reported a passive stake Sep 18, 2026
- 144 Notice of a proposed sale of restricted stock Sep 18, 2026
- SCHEDULE 13G Large holder reported a passive stake Sep 16, 2026
Other 8 of 52
Everything here comes from Korsana Biosciences, Inc.'s own filings on SEC EDGAR. The filing list is rechecked every hour.