0001755237 2026-11-05 2026-11-05 false 0001755237 NONE 8-K 2026-11-05 Korsana Biosciences, Inc. MA 001-38787 83-1895370 203 Crescent Street Bldgs. #3/3A/4 Suite 503 Waltham MA 02453 (781) 516-2325 false false false false Common Stock, no par value per share KRSA false