ECP ControlCo, LLC - May 17, 2021 Form 4 Insider Report for Custom Truck One Source, Inc. (CTOS)

Role
Director, 10%+ Owner
Signature
ECP ControlCo, LLC By: /s/ Rahman D'Argenio, Managing Member
Stock symbol
CTOS
Transactions as of
May 17, 2021
Transactions value $
$22
Form type
4
Date filed
4/5/2022, 08:28 PM
Next filing
Nov 3, 2021

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CTOS Common Stock Options Exercise $320K +80K +133.33% $4.00 140K May 17, 2021 See footnotes F1, F5
transaction CTOS Common Stock Tax liability -$320K -32.9K -23.47% $9.74 107K May 17, 2021 See footnotes F1, F5
transaction CTOS Common Stock Options Exercise $0 +13.6K +12.72% $0.00 121K Apr 1, 2022 See footnotes F1, F2, F5
holding CTOS Common Stock 25.7M May 17, 2021 See footnotes F3, F4, F5

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction CTOS Stock Option Options Exercise $0 -80K -100% $0.00* 0 May 17, 2021 Common Stock 80K $4.00 See footnotes F1, F5
transaction CTOS Restricted Stock Unit Options Exercise $0 -13.6K -100% $0.00* 0 Apr 1, 2022 Common Stock 13.6K See footnotes F1, F3, F5, F6
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Represents securities held directly by Energy Capital Partners Management, LP ("ECP Management"). ECP Management GP, LLC is the general partner of ECP Management and may be deemed to share beneficial ownership of the securities held by ECP Management.
F2 Each restricted stock unit represents a contingent right to receive one share of the Issuer's common stock.
F3 Represents securities held directly by 21,238,988 shares held by NESCO Holdings, LP and 4,500,000 shares held by ECP Cardinal Holdings, LP
F4 The general partner of each of ECP Cardinal Holdings, LP and NESCO Holdings, LP is NESCO Holdings GP, LLC. Energy Capital Partners III, LP, Energy Capital Partners III-A, LP, Energy Capital Partners III-B, LP, Energy Capital Partners III-C, LP, and Energy Capital Partners III-D, LP (together, the "ECP III Funds") and Energy Capital Partners III (NESCO Co-Invest), LP are the sole members of NESCO Holdings GP, LLC. Energy Capital Partners III, LLC is the general partner of (i) Energy Capital Partners GP III, LP, which is the general partner of each of the ECP III Funds, and (ii) Energy Capital Partners GP III Co-Investment (NESCO), LLC, which is the general partner of Energy Capital Partners III (NESCO Co-Invest), LP. As a result, each of the foregoing entities may be deemed to share beneficial ownership of the shares of Common Stock held by ECP Cardinal Holdings, LP and Nesco Holdings LP.
F5 ECP ControlCo, LLC ("ECP ControlCo") is the managing member of ECP III GP LLC and the sole member of ECP Management GP, LLC. As a result, ECP ControlCo may be deemed to share beneficial ownership of the securities beneficially owned by ECP III GP LLC and ECP Management GP, LLC. The managing members of ECP ControlCo are Douglas Kimmelman, Andrew Singer, Peter Labbat, Tyler Reeder and Rahman D'Argenio all of whom collectively share the power to vote and dispose of the securities beneficially owned by ECP ControlCo. Each such individual disclaims beneficial ownership of such shares except to the extent of his pecuniary interest therein.
F6 The restricted stock units vested in full on April 1, 2022.