Custom Truck One Source, Inc.

Ownership Transactions Reported by 24 Insiders

	Insiders	Shares	%	Avg Price	Total $
Buys	9	+16.5M	77.7%	$4.00	+$66M
Sells	3	-4.73M	22.3%	$3.42	-$16.2M
Net	+6	+11.8M	55.4%		+$49.8M

Name	Relationship	Holdings Value	Past Year Net Change	Change %	Report Date
PE One Source Holdings, LLC	10%+ Owner	$627M	+$32.6M	+5.48%	Jan 30, 2025
Platinum Equity, Llc	10%+ Owner	$627M	+$32.6M	+5.48%	Jan 30, 2025
ECP Cardinal Holdings, LP	Director, 10%+ Owner	$160M			Dec 20, 2021
ECP ControlCo, LLC	10%+ Owner	$80.1M	-$8.05M	-9.13%	Sep 5, 2024
NESCO Holdings, LP	10%+ Owner	$80M	-$8.05M	-9.15%	Sep 5, 2024
Mark Ein	Director	$21.3M			Mar 31, 2025
Fredrick M. Ross Jr.	Director	$13M			Apr 1, 2025
Ryan McMonagle	Chief Executive Officer, Director	$5.14M	+$40.4K	+0.79%	Apr 1, 2025
Joe P. Ross	President - Sales	$4.13M	+$335K	+8.82%	Apr 1, 2025
Thomas R. Rich	President - Rentals	$2.84M	+$101K	+3.67%	Apr 1, 2025
Marshall Heinberg	Director	$2.3M	+$206K	+9.87%	Mar 31, 2025
Christopher J. Eperjesy	Chief Financial Officer	$1.97M	+$78K	+4.12%	Apr 1, 2025
Brad Meader	Chief Financial Officer	$1.62M			Apr 1, 2022
Adam Haubenreich	VP and General Counsel	$1.41M			Apr 1, 2023
James Carlsen	Cio	$800K			Apr 1, 2024
Georgia R. Nelson	Director	$650K	+$49.4K	+8.22%	Mar 31, 2025
Paul M. Jolas	EVP, Gen. Counsel & Secretary	$642K			Apr 1, 2025
Paul Bader	Director	$602K			Mar 31, 2025
Raymond Todd Barrett	Chief Accounting Officer	$469K	+$12.4K	+2.71%	Apr 1, 2025
Mary M. Jackson	Director	$447K			Mar 31, 2025
Energy Capital Partners Management, LP	Director	$0	-$77.7K	-100%	Aug 27, 2024
Blackstone Holdings III L.P.	Former 10% Owner				Feb 16, 2022
Blackstone Energy Partners NQ L.P.	Former 10% Owner				Feb 16, 2022
Blackstone Holdings II L.P.	Former 10% Owner				Feb 16, 2022

Insider	Symbol	Class	Transaction	%	Value $	* Price $	Shares	Shares Owned	Date	Ownership

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