United States securities and exchange commission logo December 7, 2022 Thomas Schuetz Chief Executive Officer Compass Therapeutics, Inc. 80 Guest Street Suite 601 Boston, Massachusetts 02135 Re: Compass Therapeutics, Inc. Registration Statement on Form S-3 Filed December 2, 2022 File No. 333-268652 Dear Thomas Schuetz: This is to advise you that we have not reviewed and will not review your registration statement. Please refer to Rules 460 and 461 regarding requests for acceleration. We remind you that the company and its management are responsible for the accuracy and adequacy of their disclosures, notwithstanding any review, comments, action or absence of action by the staff. Please contact Dillon Hagius at 202-551-7967 with any questions. Sincerely, Division of Corporation Finance Office of Life Sciences cc: James Xu