Custom Truck One Source 2 nd Quarter 2021 Investor Presentation CONFIDENTIAL DRAFT 1 August 12, 2021 2 2 Safe Harbor This presentation includes certain financial measures that have not been prepared in a manner that complies with generally accepted accounting principles in the United States ("GAAP"), including, without limitation, EBITDA, Adjusted EBITDA, and Pro Forma Adjusted EBITDA (collectively, the "non-GAAP financial measures"). These non-GAAP financial measures are not measures of financial performan ...