0001797917-26-000007.txt : 20260706 0001797917-26-000007.hdr.sgml : 20260706 20260706163100 ACCESSION NUMBER: 0001797917-26-000007 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20260701 FILED AS OF DATE: 20260706 DATE AS OF CHANGE: 20260706 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Prener Anne CENTRAL INDEX KEY: 0001797917 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-39264 FILM NUMBER: 261156357 MAIL ADDRESS: STREET 1: C/O RUBIUS THERAPEUTICS STREET 2: 399 BINNEY STREET SUITE 300 CITY: CAMBRIDGE STATE: MA ZIP: 02139 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 form4-07062026_080756.xml