0001209191-21-024612.txt : 20210402 0001209191-21-024612.hdr.sgml : 20210402 20210402163236 ACCESSION NUMBER: 0001209191-21-024612 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20210401 FILED AS OF DATE: 20210402 DATE AS OF CHANGE: 20210402 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Lachey Jennifer CENTRAL INDEX KEY: 0001808322 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-39264 FILM NUMBER: 21802364 MAIL ADDRESS: STREET 1: C/O KEROS THERAPEUTICS, INC. STREET 2: 99 HAYDEN AVENUE, SUITE 120, BUILDING E CITY: LEXINGTON STATE: MA ZIP: 02421 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Keros Therapeutics, Inc. CENTRAL INDEX KEY: 0001664710 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 99 HAYDEN AVENUE, SUITE 120 (BLD E) STREET 2: LEDGEMONT TECHNOLOGY CENTER CITY: LEXINGTON STATE: MA ZIP: 02421 BUSINESS PHONE: 617-513-8774 MAIL ADDRESS: STREET 1: 99 HAYDEN AVENUE, SUITE 120 (BLD E) STREET 2: LEDGEMONT TECHNOLOGY CENTER CITY: LEXINGTON STATE: MA ZIP: 02421 4 1 doc4.xml FORM 4 SUBMISSION X0306 4 2021-04-01 0 0001664710 Keros Therapeutics, Inc. KROS 0001808322 Lachey Jennifer C/O KEROS THERAPEUTICS, INC. 99 HAYDEN AVENUE, SUITE 120, BUILDING E LEXINGTON MA 02421 0 1 0 0 Chief Scientific Officer Common Stock 2021-04-01 4 M 0 9996 0.11 A 71187 D Employee Stock Option (right to buy) 0.11 2021-04-01 4 M 0 9996 0.00 D 2027-02-05 Common Stock 9996 0 D One-quarter (1/4th) of the shares subject to the option vested on July 1, 2017, and one-twelfth (1/12th) of the remaining shares subject to the option vested or shall vest in equal quarterly installments thereafter, subject to the Reporting Person continuing to provide service through each such date. /s/ Keith Regnante, Attorney-in-Fact 2021-04-02