0001527599 2025-11-21 2025-11-21 0001527599 false 8-K 2025-11-21 SYNLOGIC, INC. DE 001-37566 26-1824804 PO Box 30 Winchester MA 01890 (617) 659-2802 false false false false Common Stock, par value $0.001 per share SYBX NASDAQ false