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Custom Truck One Source, Inc.

For the period ended Dec 31, 2025. Filed Mar 10, 2026.

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A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Mar 10, 2026

CTOS$10.02+7.4%Stored close · as of Nov 9, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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Item 16. Form 10-K Summary

SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

CUSTOM TRUCK ONE SOURCE, INC.(Registrant)
Date:March 10, 2026/s/ Ryan McMonagle
Ryan McMonagle, Chief Executive Officer
Date:March 10, 2026/s/ Christopher J. Eperjesy
Christopher J. Eperjesy, Chief Financial Officer and Principal Accounting Officer

POWER OF ATTORNEY

The undersigned directors and officers of CTOS hereby constitute and appoint Ryan McMonagle and Christopher J. Eperjesy with full power to act as our true and lawful attorney-in-fact with full power to execute in our name and behalf in the capacities indicated below, this Annual Report on Form 10-K and any and all amendments thereto and to file the same, with all exhibits thereto and other documents in connection therewith, with the Securities and Exchange Commission, and hereby ratify and confirm all that such attorneys-in-fact, or any of them, or their substitutes shall lawfully do or cause to be done by virtue hereof.

In accordance with the Securities Exchange Act of 1934, as amended, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

NameTitleDate
/s/ Marshall HeinbergChairman of the BoardMarch 10, 2026
Marshall Heinberg
/s/ David GlattDirectorMarch 10, 2026
David Glatt
/s/ David WolfDirectorMarch 10, 2026
David Wolf
/s/ Fred RossFounder and DirectorMarch 10, 2026
Fred Ross
NameTitleDate
/s/ Georgia NelsonDirectorMarch 10, 2026
Georgia Nelson
/s/ Mary JacksonDirectorMarch 10, 2026
Mary Jackson
/s/ Louis SamsonDirectorMarch 10, 2026
Louis Samson
/s/ Mark EinDirectorMarch 10, 2026
Mark Ein
/s/ Paul BaderDirectorMarch 10, 2026
Paul Bader
/s/ Ryan McMonagleChief Executive Officer and DirectorMarch 10, 2026
Ryan McMonagle
/s/ Christopher J. EperjesyChief Financial OfficerMarch 10, 2026
Christopher J. Eperjesy
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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.