STOCK TITAN

Custom Truck One Source (CTOS) EVP gains RSUs, holds 81,160 shares

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

Rhea-AI Filing Summary

Custom Truck One Source, Inc. EVP, General Counsel & Secretary Paul M. Jolas reported multiple equity compensation transactions. On April 1, 2026, three blocks of 16,875 restricted stock units were exercised, converting into a total of 50,625 shares of common stock at a $0.00 exercise price.

In connection with this vesting, 19,923 shares of common stock were withheld at $6.62 per share to satisfy tax obligations, rather than sold in the open market. After these transactions, Jolas directly owned 81,160 shares of common stock.

He also received a new grant of 72,500 restricted stock units, each representing a right to one share of common stock. These units vest in four equal annual installments beginning on April 1, 2027, subject to continued service and potential partial acceleration upon achievement of specified corporate milestones.

Positive

  • None.

Negative

  • None.
Insider JOLAS PAUL M
Role EVP, General Counsel & Sec.
Type Security Shares Price Value
Exercise Restricted Stock Unit 16,875 $0.00 --
Exercise Restricted Stock Unit 16,875 $0.00 --
Exercise Restricted Stock Unit 16,875 $0.00 --
Grant/Award Restricted Stock Unit 72,500 $0.00 --
Exercise Common Stock 50,625 $0.00 --
Tax Withholding Common Stock 19,923 $6.62 $132K
Holdings After Transaction: Restricted Stock Unit — 16,875 shares (Direct); Common Stock — 101,083 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, 2024. The restricted stock units vest in four equal annual installments beginning on April 1, 2025. 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.
RSUs Exercised 50,625 units Restricted stock units converted into common stock on April 1, 2026
Shares Withheld for Taxes 19,923 shares at $6.62/share Common stock withheld to satisfy tax obligations on vesting
New RSU Grant 72,500 units Grant of restricted stock units, vesting from April 1, 2027
Common Shares Held After 81,160 shares Direct ownership after April 1, 2026 transactions
RSU Vesting Blocks 16,875 units each Three RSU tranches exercised into common stock
Restricted Stock Unit financial
"Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock."
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 of the Reporting Person's restricted stock units."
vest in four equal annual installments financial
"The restricted stock units vest in four equal annual installments beginning on April 1, 2027, subject to continued service..."
grant, award, or other acquisition financial
"Grant, award, or other acquisition"
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*
JOLAS PAUL M

(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)
EVP, General Counsel & Sec.
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 Stock04/01/2026M50,625(1)A$0101,083D
Common Stock04/01/2026F19,923(2)D$6.6281,160D
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)04/01/2026M16,875 (3) (3)Common Stock16,875$016,875D
Restricted Stock Unit(1)04/01/2026M16,875 (4) (4)Common Stock16,875$033,750D
Restricted Stock Unit(1)04/01/2026M16,875 (5) (5)Common Stock16,875$050,625D
Restricted Stock Unit(1)04/01/2026A72,500 (6) (6)Common Stock72,500$072,500D
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, 2024.
4. The restricted stock units vest in four equal annual installments beginning on April 1, 2025.
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. Jolas04/03/2026
** 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 executive Paul M. Jolas report in this Form 4 filing?

Paul M. Jolas reported exercises of restricted stock units into common stock and a new RSU grant. He converted 50,625 RSUs into common shares, had 19,923 shares withheld for taxes, and received 72,500 new RSUs subject to future vesting conditions.

How many Custom Truck One Source (CTOS) shares does Paul M. Jolas hold after the transactions?

After the reported transactions, Paul M. Jolas directly owns 81,160 shares of Custom Truck One Source common stock. This reflects the RSU exercises into 50,625 shares and the 19,923 shares withheld to cover tax obligations related to the vesting events.

How many restricted stock units did CTOS grant to Paul M. Jolas in this filing?

The filing shows a grant of 72,500 restricted stock units to Paul M. Jolas. Each unit represents a contingent right to receive one share of Custom Truck One Source common stock, subject to vesting based on continued service and certain corporate milestones.

When do the newly granted CTOS restricted stock units begin vesting for Paul M. Jolas?

The newly granted restricted stock units vest in four equal annual installments starting April 1, 2027. Vesting is conditioned on continued service on each vesting date and may partially accelerate if specified corporate milestones are achieved, according to the filing’s footnotes.

Were any of Paul M. Jolas’s CTOS share transactions open-market sales?

The filing does not report open-market sales. Instead, 19,923 shares of common stock were withheld at $6.62 per share to satisfy tax obligations arising from restricted stock unit vesting, which is a tax-withholding disposition rather than a market sale.

What is the exercise price on the RSUs Paul M. Jolas converted into CTOS common stock?

The restricted stock units exercised by Paul M. Jolas converted into common stock at an exercise price of $0.00 per unit. Each restricted stock unit represents a contingent right to receive one share of Custom Truck One Source common stock upon vesting.