0001527599 2026-01-16 2026-01-16 0001527599 true 8-K/A 2026-01-16 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 This Amendment No. 1 to Current Report on Form 8-K (the “Form 8-K/A”) amends and restates the Current Report on Form 8-K of Synlogic, Inc. (the “Company”) filed with the U.S. Securities and Exchange Commission on January 20, 2026 (the “Original Form 8-K”), which reported the delisting of the Company's shares of common stock from Nasdaq. This Form 8-K/A is being filed to include Item 8.01 to state that the Company believes that it is a “public shell” and to amend the disclosure in Item 3.01 to disclose the tier of the OTC Markets Group, Inc. upon which the Company expects its shares of common stock to be quoted.