v3.22.2.2
Cover
Nov. 29, 2022
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Nov. 29, 2022
Entity File Number 001-39696
Entity Registrant Name COMPASS THERAPEUTICS, INC.
Entity Central Index Key 0001738021
Entity Tax Identification Number 82-4876496
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 80 Guest Street
Entity Address, Address Line Two Suite 601
Entity Address, City or Town Boston
Entity Address, State or Province MA
Entity Address, Postal Zip Code 02135
City Area Code 617
Local Phone Number 500-8099
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, $0.0001 par value per share
Trading Symbol CMPX
Security Exchange Name NASDAQ
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period false