0001808365-26-000004.txt : 20260608 0001808365-26-000004.hdr.sgml : 20260608 20260608163612 ACCESSION NUMBER: 0001808365-26-000004 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20260604 FILED AS OF DATE: 20260608 DATE AS OF CHANGE: 20260608 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Knowles Julius CENTRAL INDEX KEY: 0001808365 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-39264 FILM NUMBER: 261073180 MAIL ADDRESS: STREET 1: MASS GENERAL BRIGHAM VENTURES STREET 2: 399 REVOLUTION DRIVE, SUITE 999 CITY: SOMERVILLE STATE: MA ZIP: 02145 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Keros Therapeutics, Inc. CENTRAL INDEX KEY: 0001664710 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] ORGANIZATION NAME: 03 Life Sciences EIN: 811173868 FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 1050 WALTHAM STREET, SUITE 302 CITY: LEXINGTON STATE: MA ZIP: 02421 BUSINESS PHONE: 617-314-6297 MAIL ADDRESS: STREET 1: 1050 WALTHAM STREET, SUITE 302 CITY: LEXINGTON STATE: MA ZIP: 02421 4 1 form4-06082026_080608.xml