SEC Filing Summary for Custom Truck One Source, Inc.

This filing details stock transactions by Ross Joe P., President - Sales at Custom Truck One Source, Inc. On April 1, 2026, there were several transactions involving Common Stock and Restricted Stock Units (RSUs). Ross Joe P. acquired 75,000 shares of Common Stock at $0.00 per share and disposed of 33,788 shares at $6.62 per share, which were withheld for tax obligations. Additionally, 100,000 RSUs were acquired, while 50,000 and 25,000 RSUs were disposed of. These RSUs vest over several years, with some subject to continued service and corporate milestones. Following these transactions, Ross Joe P. directly holds 377,493 shares of Common Stock and indirectly holds 282,449 shares through Joseph P. Ross Holding Company, LLC. The filing is Form 4, indicating a change in beneficial ownership.