0001572616 2026-09-30 2026-09-30 --12-31 false 0001572616 8-K 2026-09-30 Fractyl Health, Inc. DE 001-41942 27-3553477 3 Van de Graaff Drive Suite 200 Burlington MA 01803 (781) 902-8800 false false false false Common Stock, $0.00001 par value per share GUTS NASDAQ true false