Press releases December 2, 2019 Compass Therapeutics to Present at Piper Jaffray 31st Annual Healthcare Conference October 24, 2019 Compass Therapeutics to Present Preclinical Data on a Novel PD-1/PD-L1 Bispecific Antibody and from its Proprietary Innate Cell Engager Platform at the 2019 SITC Meeting October 22, 2019 Compass Therapeutics Appoints Leading Immuno-Oncology Researchers to Its Immuno-Oncology Scientific Advisory Board August 1, 2019 Compass Therapeutics Appoints Julie Sunderland to Board of Directors July 8, 2019 Compass Therapeutics Announces First Patient Dosed in Phase 1 Trial of CTX-471 June 17, 2019 Compass Therapeutics Announces Issuance of Composition of Matter and Method Patents Covering Its Lead Immuno-oncology Candidate, CTX-471 March 24, 2019 Compass at Keystone’s Cancer Immunotherapy Symposium (March 24-28) in Keystone, Colorado March 12, 2019 Compass at the Cowen & Co. 39th Annual Health Care Conference 2019 January 3, 2019 Compass Therapeutics to Present at J.P. Morgan Healthcare Conference