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SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
  
Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
PE One Source Holdings, LLC

(Last) (First) (Middle)
C/O PLATINUM EQUITY ADVISORS, LLC
360 NORTH CRESCENT DRIVE, SOUTH BUILDING

(Street)
BEVERLY HILLS CA 90210

(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
Custom Truck One Source, Inc. [ CTOS ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director X 10% Owner
Officer (give title below) Other (specify below)
3. Date of Earliest Transaction (Month/Day/Year)
01/30/2025
4. If Amendment, Date of Original Filed (Month/Day/Year)
6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
X Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 01/30/2025 P 8,143,635 A $4 156,743,635 I See Footnotes(1)(2)
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
1. Name and Address of Reporting Person*
PE One Source Holdings, LLC

(Last) (First) (Middle)
C/O PLATINUM EQUITY ADVISORS, LLC
360 NORTH CRESCENT DRIVE, SOUTH BUILDING

(Street)
BEVERLY HILLS CA 90210

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
Platinum Equity Partners V, L.P.

(Last) (First) (Middle)
C/O PLATINUM EQUITY ADVISORS, LLC
360 NORTH CRESCENT DRIVE, SOUTH BUILDING

(Street)
BEVERLY HILLS CA 90210

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
Platinum Equity Partners V, LLC

(Last) (First) (Middle)
C/O PLATINUM EQUITY ADVISORS, LLC
360 NORTH CRESCENT DRIVE, SOUTH BUILDING

(Street)
BEVERLY HILLS CA 90210

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
Platinum Equity Investment Holdings V, LLC

(Last) (First) (Middle)
C/O PLATINUM EQUITY ADVISORS, LLC
360 NORTH CRESCENT DRIVE, SOUTH BUILDING

(Street)
BEVERLY HILLS CA 90210

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
Platinum Equity Investment Holdings V Manager, LLC

(Last) (First) (Middle)
C/O PLATINUM EQUITY ADVISORS, LLC
360 NORTH CRESCENT DRIVE, SOUTH BUILDING

(Street)
BEVERLY HILLS CA 90210

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
Platinum Equity InvestCo, L.P.

(Last) (First) (Middle)
C/O PLATINUM EQUITY ADVISORS, LLC
360 NORTH CRESCENT DRIVE, SOUTH BUILDING

(Street)
BEVERLY HILLS CA 90210

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
Platinum InvestCo (Cayman), LLC

(Last) (First) (Middle)
C/O PLATINUM EQUITY ADVISORS, LLC
360 NORTH CRESCENT DRIVE, SOUTH BUILDING

(Street)
BEVERLY HILLS CA 90210

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
Platinum Equity Investment Holdings IC (Cayman), LLC

(Last) (First) (Middle)
C/O PLATINUM EQUITY ADVISORS, LLC
360 NORTH CRESCENT DRIVE, SOUTH BUILDING

(Street)
BEVERLY HILLS CA 90210

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
1. Name and Address of Reporting Person*
Platinum Equity Investment Holdings, LLC

(Last) (First) (Middle)
C/O PLATINUM EQUITY ADVISORS, LLC
360 NORTH CRESCENT DRIVE, SOUTH BUILDING

(Street)
BEVERLY HILLS CA 90210

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer
Director X 10% Owner
Officer (give title below) Other (specify below)
Explanation of Responses:
1. PE One Source Holdings, LLC ("PE One Source") is the record holder of the securities reported herein. Tom Gores is the manager of Platinum Equity, LLC, which is the sole member of Platinum Equity Investment Holdings, LLC, which is the sole member of Platinum Equity Investment Holdings IC (Cayman), LLC, which is the general partner of Platinum Equity InvestCo, L.P., which is the sole member of Platinum Equity Investment Holdings V, LLC, which is the sole member of Platinum Equity Partners V, LLC, which is the general partner of Platinum Equity Partners V, L.P., which is the general partner of Platinum Equity Capital Partners V, L.P., which holds a majority of the outstanding equity of PE One Source.
2. Additionally, Platinum Equity, LLC is also the sole member of Platinum Equity Investment Holdings V Manager, LLC, which is the sole manager of Platinum Equity Investment Holdings V, LLC. Platinum Equity, LLC and Tom Gores together hold a controlling interest in Platinum InvestCo (Cayman), LLC, which holds a controlling interest in Platinum Equity InvestCo, L.P. By virtue of these relationships, each of these entities and Mr. Gores may be deemed to share beneficial ownership of the securities held of record by PE One Source. Each of these entities and Mr. Gores disclaim any such beneficial ownership except to the extent of their pecuniary interests therein.
Remarks:
Due to limitations of the electronic filing system, each of Platinum Equity, LLC and Tom Gores are filing a separate Form 4.
PE One Source Holdings, LLC, By: /s/ Ty Renbarger, Vice President 02/03/2025
Platinum Equity Capital Partners V, L.P., By: Platinum Equity Partners V, L.P., its general partner, By: Platinum Equity Partners V, LLC, its general partner, By: /s/ Ty Renbarger, Vice President 02/03/2025
Platinum Equity Partners V, L.P., By: Platinum Equity Partners V, LLC, its general partner, By: /s/ Ty Renbarger, Vice President 02/03/2025
Platinum Equity Partners V, LLC, By: /s/ Ty Renbarger, Vice President 02/03/2025
Platinum Equity Investment Holdings V, LLC, By: /s/ Barbara Velasco, Assistant Secretary 02/03/2025
Platinum Equity Investment Holdings V Manager, LLC, By: /s/ Barbara Velasco, Assistant Secretary 02/03/2025
Platinum Equity InvestCo, L.P., By: Platinum Equity Investment Holdings IC (Cayman), LLC, its general partner, By: /s/ Mary Ann Sigler, President 02/03/2025
Platinum InvestCo (Cayman), LLC, By: /s/ Mary Ann Sigler, President 02/03/2025
Platinum Equity Investment Holdings IC (Cayman), LLC, By: /s/ Mary Ann Sigler, President 02/03/2025
Platinum Equity Investment Holdings, LLC, By: /s/ Ty Renbarger, Vice President 02/03/2025
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
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