Certain Stock Options of Compass Therapeutics, Inc. are subject to a Lock-Up Agreement Ending on 30-JAN-2022. These Stock Options will be under lockup for 90 days starting from 1-NOV-2021 to 30-JAN-2022.

Details:
The company, it's executive officers and directors and certain of it's stockholders have agreed for a period of 90 days from the date of this prospectus supplement, without the prior written consent of SVB Leerink LLC, with certain limited exceptions, not to offer, pledge, sell, contract to sell, or otherwise dispose of any shares of it's common stock.