Mark Ein - 17 Oct 2025 Form 4 Insider Report for Custom Truck One Source, Inc. (CTOS)

Role
Director
Signature
/s/ Mark Ein
Issuer symbol
CTOS
Transactions as of
17 Oct 2025
Net transactions value
$0
Form type
4
Filing time
21 Oct 2025, 16:30:02 UTC
Previous filing
12 Aug 2025
Next filing
20 Jan 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
EIN MARK Director 7701 INDEPENDENCE AVE., KANSAS CITY /s/ Mark Ein 21 Oct 2025 0001246840

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CTOS Common Stock Other $0 -3,670,279 -100% $0.000000 0 17 Oct 2025 By Capitol Acquisition Management IV, LLC F1
holding CTOS Common Stock 5,139,319 17 Oct 2025 Direct F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Represents a pro-rata distribution in-kind by Capitol Acquisition Management IV, LLC to its members for no consideration (the "Distribution").
F2 Includes shares received in the Distribution.