0000950170-25-050478.txt : 20250403 0000950170-25-050478.hdr.sgml : 20250403 20250403163042 ACCESSION NUMBER: 0000950170-25-050478 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20250402 FILED AS OF DATE: 20250403 DATE AS OF CHANGE: 20250403 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Dooley Mary Beth CENTRAL INDEX KEY: 0002015112 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-37566 FILM NUMBER: 25810042 MAIL ADDRESS: STREET 1: 301 BINNEY ST., SUITE 402 CITY: CAMBRIDGE STATE: MA ZIP: 02142 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: SYNLOGIC, INC. CENTRAL INDEX KEY: 0001527599 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] ORGANIZATION NAME: 03 Life Sciences EIN: 261824804 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: PO BOX 30 CITY: WINCHESTER STATE: MA ZIP: 01890 BUSINESS PHONE: 617-659-2802 MAIL ADDRESS: STREET 1: PO BOX 30 CITY: WINCHESTER STATE: MA ZIP: 01890 FORMER COMPANY: FORMER CONFORMED NAME: Mirna Therapeutics, Inc. DATE OF NAME CHANGE: 20110809 4 1 ownership.xml 4 X0508 4 2025-04-02 0001527599 SYNLOGIC, INC. SYBX 0002015112 Dooley Mary Beth C/O SYNLOGIC, INC. PO BOX 30 WINCHESTER MA 01890 false true false false See Remarks below false Common Stock 2025-04-02 4 S false 144 1.2 D 12901 D Represents the number of shares sold by the reporting person on April 2, 2025 to cover the tax liability in connection with the vesting of three restricted stock awards, vesting on April 1, 2025, that were granted in 2021, 2022 and 2023. Principal Executive Officer and Principal Financial Officer /s/ Mary Beth Dooley 2025-04-03