Custom Truck One Source, Inc. — Director's Dealing 2023

Apr 4, 2023

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: Custom Truck One Source, Inc. (CTOS)
CIK: 0001709682
Period of Report: 2023-04-01

Reporting Person: Haubenreich Adam G. (VP and General Counsel)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2023-04-01	Common Stock	M	31250	—	Acquired	124976	Direct
2023-04-01	Common Stock	F	13230	$6.79	Disposed	111746	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2023-04-01	Restricted Stock Unit	$	M	31250	Disposed		Common Stock (31250)	Direct

Footnotes

F1: Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.

F2: Shares withheld to satisfy tax obligations arising out of vesting of the Reporting Person's performance stock units.

F3: The restricted stock units vest in four equal annual installments beginning on April 1, 2022.