Key facts
- This page summarizes Marshall A. Heinberg's Form 4 filing for Custom Truck One Source, Inc. (CTOS).
- 3 reported transactions and 2 derivative rows are listed below.
- Accepted by SEC: 02 Apr 2026, 16:30.
Marshall A. Heinberg - 31 Mar 2026 Form 4 Insider Report for Custom Truck One Source, Inc. (CTOS)
- Reporting relationship
- Director
- Issuer ticker
- CTOS
- Reported as of
- 31 Mar 2026
- Net transaction value
- $0
- SEC form
- 4
- Accepted by SEC
- 02 Apr 2026, 16:30:06 UTC
- Prior SEC filing
- 20 Jan 2026
- Source filing
- View source filing
- Reporting owner signature
- By: /s/ Paul M. Jolas, Attorney-in-fact
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Marshall A. Heinberg filed Form 4 for Custom Truck One Source, Inc. (CTOS) on 02 Apr 2026.
Change
- Previous filing in this sequence was filed on 20 Jan 2026.
- Current net transaction value: $0.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001481338
Primary reporting owner
Heinberg Marshall S
- Relationship
- Director
- Address
- 7701 INDEPENDENCE AVE, KANSAS CITY, AUSTRALIA
- Signature
- By: /s/ Paul M. Jolas, Attorney-in-fact
- Signature date
- 02 Apr 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
CTOS
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +48,346
- Change %
- +14%
- Price
- $0.000000*
- Shares after
- 400,548
- Date
- 31 Mar 2026
- Ownership
- Direct
- Footnotes
- F1
CTOS
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 120,000
- Date
- 31 Mar 2026
- Ownership
- By Spouse
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
CTOS
transaction
Derivative
Restricted Stock Unit
Options Exercise
- Transaction value
- Shares
- -48,346
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 31 Mar 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 48,346
- Exercise price
- Footnotes
- F1, F2
CTOS
transaction
Derivative
Restricted Stock Unit
Award
- Transaction value
- Shares
- +34,605
- Change %
- Price
- $0.000000*
- Shares after
- 34,605
- Date
- 01 Apr 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 34,605
- Exercise price
- Footnotes
- F1, F3
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 3 footnotes
Footnote F1
Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.
Footnote F2
The restricted stock units vested in full on March 31, 2026.
Footnote F3
The restricted stock units will vest on March 31, 2027 and have no expiration date.