Certain Restricted Stock Units of Custom Truck One Source, Inc. are subject to a Lock-Up Agreement Ending on 16-JAN-2022. These Restricted Stock Units will be under lockup for 60 days starting from 17-NOV-2021 to 16-JAN-2022.

Details:
Each of the directors, the selling stockholders and certain of stockholders and officers have entered into lock-up agreements with the underwriters, which prohibit them from selling their shares of common stock or any securities convertible into or exercisable or exchangeable for common stock (other than in this offering) during the period from the date of this prospectus supplement continuing through the date that is 60 days from the date of this prospectus supplement, subject to certain exceptions.