X0508 4 2026-02-19 0001664710 Keros Therapeutics, Inc. KROS 0001732369 Seehra Jasbir C/O KEROS THERAPEUTICS, INC. 1050 WALTHAM STREET, SUITE 302 LEXINGTON MA 02421 true true false false CHIEF EXECUTIVE OFFICER 0 Common Stock 2026-02-19 4 S 0 7015 16.17 D 385708 D The Issuer has adopted a "sell-to-cover" policy to satisfy the tax withholding obligations of the Reporting Person. The sales reported on this Form 4 represent the number of shares required to be sold by the Reporting Person to cover tax withholding obligations in connection with the vesting of restricted stock units. Such sales were automatic and not at the discretion of the Reporting Person. /s/ Keith Regnante, Attorney-in-Fact 2026-02-20