1 CONFIDENTIAL DRAFT Custom Truck One Source 1st Quarter 2022 Investor Presentation May 10, 2022 2 2 Forward-Looking Statements 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 financia ...

Custom Truck One Source, Inc. (NYSE:CTOS) Q1 2022 Earnings Conference Call May 10, 2022 5:00 PM ET Company Participants Brian Perman - Vice President-Investor Relations Fred Ross - Chief Executive Officer Ryan McMonagle - President & Chief Operating Officer Brad Meader - Chief Financial Officer Todd Barrett - Chief Accounting Officer Conference Call Participants Justin Hauke - Baird Nicole DeBlase - Deutsche Bank Stefanos Crist - CJS Securities Scott Schneeberger - Oppenheimer Noelle Dilts - Stifel Operator ...

Table of Contents _______________________________ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 _______________________________ FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2022 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-38186 _______________________________ CUSTOM TRUCK ONE SOUR ...

Table of Contents _______________________________ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 _______________________________ FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-38186 _______________________________ CUSTOM TRUCK ONE SOURCE, I ...

Custom Truck One Source 4th Quarter & Full-Year 2021 Investor Presentation March 10, 2022 1 CONFIDENTIAL DRAFT 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 ...

Custom Truck One Source, Inc. (NYSE:CTOS) Q4 2021 Earnings Conference Call March 10, 2022 5:00 PM ET Company Participants Brian Perman - Vice President, Investor Relations Fred Ross - Chief Executive Officer Ryan McMonagle - President and Chief Operating Officer Brad Meader - Chief Financial Officer Conference Call Participants Justin Hauke - Baird Scott Schneeberger - Oppenheimer Noelle Dilts - Stifel Stefanos Crist - CJS Securities Operator Hello and welcome to the Custom Truck One Source Fourth Quarter 2 ...

Table of Contents _______________________________ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 _______________________________ FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2021 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-38186 _______________________________ CUSTOM TRUCK ONE ...

Custom Truck One Source, Inc. (NYSE:CTOS) Q3 2021 Earnings Conference Call November 9, 2021 5:00 AM ET Company Participants Brian Perman - VP, IR Fred Ross – CEO Ryan McMonagle – President and COO Bradley Meader – CFO Conference Call Participants Stefanos Crist - CJS Securities Scott Schneeberger - Oppenheimer & Co. Sean Wondrack - Deutsche Bank Operator Ladies and gentlemen, thank you for standing by, and welcome to Custom Truck One Source's Third Quarter 2021 Earnings Conference Call. During the presentat ...

Custom Truck One Source 3rd Quarter 2021 Investor Presentation November 9, 2021 1 CONFIDENTIAL DRAFT 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 ...

Table of Contents _______________________________ UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 _______________________________ FORM 10-Q ☒ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2021 ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-38186 _______________________________ CUSTOM TRUCK ONE SOURCE ...