Mark Ein - 17 Oct 2025 SCHEDULE 13D/A Report for Custom Truck One Source, Inc. Common Stock (CTOS)

Filing Manager
Mark Ein
Reporting Manager
Capitol Acquisition Management IV LLC
Security
Custom Truck One Source, Inc. Common Stock
Symbol
CTOS
Disclosed Ownership
0 shares
Ownership
0%
Form type
SCHEDULE 13D/A
Filing time
21 Oct 2025, 16:30:01 UTC
Date of event
17 Oct 2025
SEC
View on sec.gov

Reporting Managers (4)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Capitol Acquisition Management IV LLC 0% 0 0 0 /s/ Mark Ein Mark Ein, Chief Executive Officer
Capitol Acquisition Founder IV LLC 0% 0 0 0 /s/ Dyson Dryden Dyson Dryden, Chief Financial Officer
Mark Ein 2.3% 5,159,319 5,159,319 0 /s/ Mark Ein Mark Ein 0001246840
Dyson Dryden 0% 0 0 0 /s/ Dyson Dryden Dyson Dryden