ECP ControlCo, LLC → Custom Truck One Source, Inc. CTOS

Item 4 of the Statement is hereby amended and supplemented as follows: Stock Repurchase Agreements On January 30, 2025, NESCO Holdings, LP and ECP Cardinal Holdings, LP (together, the "Record Holders") entered into two stock purchase agreements, pursuant to which the Record Holders disposed of all of the shares of Common Stock held by them. The first agreement was with the Issuer (the "Issuer Stock Purchase Agreement"), pursuant to which the Record Holders sold an aggregate of 8,143,635 shares of Common Stock at a price of $4.00 per share to the Issuer. The second agreement was with PE One Source Holdings, LLC, an investment fund affiliated with Platinum Equity, LLC (the "Platinum Stock Purchase Agreement"), pursuant to which the Record Holders also sold an aggregate of 8,143,635 shares of Common Stock to PE One Source Holdings, LLC at a price of $4.00 per share.