v3.25.1
Cover
Jun. 06, 2025
Document Information [Line Items]  
Document Type 8-K
Document Period End Date Jun. 06, 2025
Entity Registrant Name Keros Therapeutics, Inc.
Entity Incorporation, State or Country Code DE
Entity File Number 001-39264
Entity Tax Identification Number 81-1173868
Entity Address, Address Line One 1050 Waltham Street
Entity Address, Address Line Two Suite 302
Entity Address, City or Town Lexington
Entity Address, State or Province MA
Entity Address, Postal Zip Code 02421
City Area Code 617
Local Phone Number 314-6297
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Entity Central Index Key 0001664710
Amendment Flag false
Common Stock  
Document Information [Line Items]  
Title of 12(b) Security Common Stock, $0.0001 par value per share
Trading Symbol KROS
Security Exchange Name NASDAQ
Preferred Stock  
Document Information [Line Items]  
Title of 12(b) Security Preferred Share Purchase Rights
Security Exchange Name NASDAQ
No Trading Symbol Flag true