Custom Truck One Source, Inc. 8-K

What Happened
Custom Truck One Source, Inc. filed a Form 8-K on March 25, 2026 (Item 7.01, Regulation FD Disclosure) reporting that it issued a press release announcing a webcast scheduled for 9:00 a.m. ET on Wednesday, April 1, 2026. During the webinar, management will present and discuss the company’s previously announced operating segment realignment. The press release is attached to the filing as Exhibit 99.1. The filing is signed by CFO Christopher J. Eperjesy.

Key Details

• Webinar date and time: April 1, 2026 at 9:00 a.m. ET.
• Topic: Presentation and discussion of the operating segment realignment (previously announced).
• Filing date: Form 8-K filed March 25, 2026 under Item 7.01 (Regulation FD Disclosure).
• Press release attached as Exhibit 99.1 to the 8-K; filing signed by CFO Christopher J. Eperjesy.

Why It Matters
Segment realignment changes how the company groups and reports revenue, operating results and other metrics by business area, which can affect comparability of historical quarterly and annual results. Investors should review the webcast and the accompanying materials to understand the new segment definitions and any implications for revenue reporting or segment-level performance going forward. The Regulation FD filing signals the company is publicly disclosing the presentation to ensure all investors have access to the information.