Thomas R. Rich - 01 Apr 2022 Form 4 Insider Report for Custom Truck One Source, Inc. (CTOS)

Role: EVP- Rentals
Signature: By: /s/ Adam Haubenreich, Attorney-in-fact
Issuer symbol: CTOS
Transactions as of: 01 Apr 2022
Transactions value $: -$123,649
Form type: 4
Filing time: 05 Apr 2022, 20:10:36 UTC
Previous filing: 15 Dec 2021
Next filing: 04 Aug 2022
SEC: View on sec.gov

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	CTOS	Common Stock	Options Exercise	$0	+50K	+139.44%	$0.00	85.9K	01 Apr 2022	Direct	F1
transaction	CTOS	Common Stock	Tax liability	-$124K	-14.8K	-17.27%	$8.34	71K	01 Apr 2022	Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	CTOS	Restricted Stock Unit	Options Exercise	$0	-50K	-25%	$0.00	150K	01 Apr 2022	Common Stock	50K		Direct	F1, F2

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.
F2	The restricted stock units vest in four equal annual installments beginning on April 1, 2022.