Compass Therapeutics, Inc.

In addition to the other information set forth in this report, you should carefully consider the risk factors discussed in Part I, Item 1A “Risk Factors” in our Annual Report on Form 10-K for the fiscal year ended December 31, 2024, which could materially affect our business, financial condition, or results of operations. There has been no material change in the risk factors described in the Company’s Annual Report on Form 10-K for the year ended December 31, 2024, with the exception of the addition of the following risk factors:

Adverse global conditions, including economic uncertainty and tariffs, may negatively impact our financial results.

Global conditions, dislocations in the financial markets, or inflation could adversely impact our business. In addition, the global macroeconomic environment has been and may continue to be negatively affected by, among other things, instability in global economic markets, increased U.S. trade tariffs and trade disputes with other countries, instability in the global credit markets, supply chain weaknesses, instability in the geopolitical environment, political tensions, and foreign governmental debt concerns. Such challenges have caused, and may continue to cause, uncertainty and instability in local economies and in global financial markets, which may adversely affect our business.

Executive actions on drug pricing could negatively impact our ability to obtain adequate reimbursement for our products, if and when they are approved.