Compass Therapeutics to Participate in Upcoming May Investor Events

Compass Therapeutics, Inc. (Nasdaq: CMPX), a clinical-stage, oncology-focused biopharmaceutical company developing proprietary antibody-based therapeutics to treat multiple human diseases, today announced that the Company will participate in the following investor events during the month of May.

Details are as follows:

H.C. Wainwright 4th Annual BioConnect Investor Conference at NASDAQ Date: Tuesday, May 19, 2026 Time: 1:30 PM ET Webcast Link: https://journey.ct.events/view/bc55d2f9-d121-4f7d-8129-1f69f201bd7f

2026 Stifel Virtual Targeted Oncology Forum Date: Wednesday, May 20, 2026 Time: 11:30 AM ET Webcast Link: https://event.summitcast.com/view/SScpdhHfwE8g9WsS8WcTax/QuhrzDf8Wdgui7i3FhuDb6

Virtual/Replay availability: Presentations will be archived on Compass’ Events page.

Compass’ management will be available for one-on-one meetings during all events. Interested investors should contact their respective representatives to request meetings.

About Compass Therapeutics Compass Therapeutics, Inc. was founded in 2014 and is headquartered in Boston, MA. Compass is a clinical-stage, oncology-focused biopharmaceutical company discovering and developing proprietary antibody-based therapeutics to treat multiple diseases. The company’s scientific focus is on the relationship between angiogenesis, the immune system and tumor growth. Compass has a robust pipeline of novel product candidates designed to target multiple key biological pathways to drive an effective anti-tumor response, including angiogenesis modulation, immune activation within the tumor microenvironment, and reduction of tumor-driven immunosuppression. The company is advancing discovery candidates through clinical development to commercial-stage assets. For more information, visit www.compasstherapeutics.com .

Investor Contact [email protected]

Media Contact Anna Gifford, Chief of Staff [email protected] 617-500-8099