STOCK TITAN

Custom Truck (CTOS) CFO nets 90K shares and new 95K RSU grant

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Custom Truck One Source, Inc. Chief Financial Officer Christopher J. Eperjesy reported several equity-compensation transactions. On April 1, 2026, he exercised restricted stock units representing 90,000 shares of common stock, converting previously granted awards into shares.

To cover related tax obligations from RSU vesting, 40,547 common shares were withheld at $6.62 per share, leaving him with 283,926 common shares held directly. He also received a new grant of 95,000 restricted stock units, which vest in four equal annual installments beginning on April 1, 2027, subject to continued service and potential partial acceleration upon achievement of certain corporate milestones.

Positive

  • None.

Negative

  • None.
Insider Eperjesy Christopher J
Role Chief Financial Officer
Type Security Shares Price Value
Exercise Restricted Stock Unit 22,500 $0.00 --
Exercise Restricted Stock Unit 45,000 $0.00 --
Exercise Restricted Stock Unit 22,500 $0.00 --
Grant/Award Restricted Stock Unit 95,000 $0.00 --
Exercise Common Stock 90,000 $0.00 --
Tax Withholding Common Stock 40,547 $6.62 $268K
Holdings After Transaction: Restricted Stock Unit — 0 shares (Direct); Common Stock — 324,473 shares (Direct)
Footnotes (1)
  1. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock. Shares withheld to satisfy tax obligations arising out of vesting of the Reporting Person's restricted stock units. The restricted stock units vest in four equal annual installments beginning on April 1, 2023. The restricted stock units vest in four equal annual installments beginning on April 1, 2024. The restricted stock units vest in four equal annual installments beginning on April 1, 2026. The restricted stock units vest in four equal annual installments beginning on April 1, 2027, subject to continued service on the applicable vesting date and potential partial acceleration upon the achievement of certain corporate milestones.
RSU exercises 90,000 shares Restricted stock units converted into common stock on April 1, 2026
Tax-withheld shares 40,547 shares at $6.62 Shares withheld to satisfy tax obligations from RSU vesting
Post-transaction holdings 283,926 shares Common stock directly owned by CFO after reported transactions
New RSU grant 95,000 units Restricted stock units granted with four-year vesting from April 1, 2027
Exercise events 3 transactions, 90,000 shares Derivative exercises summarized in transactionSummary for RSU conversions
Tax-withholding count 1 transaction, 40,547 shares Single F-code disposition for payment of tax liability
Restricted Stock Unit financial
"Each restricted stock unit represents a contingent right to receive one share"
A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.
tax obligations financial
"Shares withheld to satisfy tax obligations arising out of vesting"
vest in four equal annual installments financial
"The restricted stock units vest in four equal annual installments"
contingent right financial
"represents a contingent right to receive one share of the Issuer's common stock"
tax-withholding disposition financial
"Payment of exercise price or tax liability by delivering securities"
A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.
SEC Form 4
FORM 4UNITED 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
OMB APPROVAL
OMB Number:3235-0287
Estimated average burden
hours per response:0.5
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*
Eperjesy Christopher J

(Last)(First)(Middle)
7701 INDEPENDENCE AVE

(Street)
KANSAS CITY MISSOURI 64125

(City)(State)(Zip)

UNITED STATES

(Country)
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)
Director10% Owner
XOfficer (give title below)Other (specify below)
Chief Financial Officer
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
04/01/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

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)
CodeVAmount(A) or (D)Price
Common Stock04/01/2026M90,000(1)A$0324,473D
Common Stock04/01/2026F40,547(2)D$6.62283,926D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Restricted Stock Unit(1)04/01/2026M22,500 (3) (3)Common Stock22,500$00D
Restricted Stock Unit(1)04/01/2026M45,000 (4) (4)Common Stock45,000$045,000D
Restricted Stock Unit(1)04/01/2026M22,500 (5) (5)Common Stock22,500$067,500D
Restricted Stock Unit(1)04/01/2026A95,000 (6) (6)Common Stock95,000$095,000D
Explanation of Responses:
1. Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.
2. Shares withheld to satisfy tax obligations arising out of vesting of the Reporting Person's restricted stock units.
3. The restricted stock units vest in four equal annual installments beginning on April 1, 2023.
4. The restricted stock units vest in four equal annual installments beginning on April 1, 2024.
5. The restricted stock units vest in four equal annual installments beginning on April 1, 2026.
6. The restricted stock units vest in four equal annual installments beginning on April 1, 2027, subject to continued service on the applicable vesting date and potential partial acceleration upon the achievement of certain corporate milestones.
By: /s/ Paul M. Jolas, Attorney-in-fact04/03/2026
** Signature of Reporting PersonDate
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).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)

FAQ

What did CTOS CFO Christopher Eperjesy report in this Form 4 filing?

He reported routine equity-compensation activity, including exercising restricted stock units into 90,000 common shares and receiving a new 95,000-unit RSU grant. Shares were also withheld to pay taxes arising from the vesting of these awards, all held in direct ownership.

How many Custom Truck (CTOS) shares does the CFO hold after these transactions?

After the reported transactions, Christopher Eperjesy directly holds 283,926 shares of Custom Truck One Source common stock. This figure reflects RSU exercises into 90,000 shares and the withholding of 40,547 shares to satisfy tax obligations linked to the vesting of restricted stock units.

How many restricted stock units did the CTOS CFO exercise and at what price?

He exercised restricted stock units covering 90,000 underlying shares of Custom Truck One Source common stock. The reported exercise price per share was $0.00, reflecting the nature of RSU conversions, where units settle into shares without a cash exercise price paid by the holder.

Why were 40,547 CTOS shares withheld from the CFO’s Form 4 transactions?

The 40,547 shares of Custom Truck One Source common stock were withheld to satisfy tax obligations from the vesting of restricted stock units. These withheld shares are characterized as a tax-withholding disposition at $6.62 per share, rather than an open-market sale by the executive.

What are the vesting terms of the new 95,000 CTOS restricted stock units?

The 95,000 restricted stock units granted to the CFO vest in four equal annual installments beginning on April 1, 2027. Vesting requires continued service on each vesting date and may partially accelerate if certain corporate milestones are achieved, according to the filing’s footnote language.

Are the CTOS Form 4 transactions open-market buys or routine compensation events?

The transactions are routine compensation events, not open-market buys or sales. They include RSU exercises converting awards into 90,000 shares and a tax-withholding disposition of 40,547 shares, plus a 95,000-unit RSU grant, all consistent with standard equity compensation practices.