---
schema_version: "secwatch.filing_event.v1"
accession: "0001709682-26-000010"
form_type: "8-K"
ticker: "CTOS"
cik: "0001709682"
company_name: "Custom Truck One Source, Inc."
filed_at: "2026-03-25T23:59:59+00:00"
generated_at: "2026-05-15T09:02:04.105131+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Custom Truck One Source to host webinar April 1 on segment reporting changes

## Summary
- Webinar scheduled for 9:00 a.m. ET on April 1, 2026 to discuss operating segment realignment.
- Presentation materials will be posted on the Events & Presentations page of investors.customtruck.com.
- Replay available until May 1, 2026; dial-in 1-800-715-9871 with conference ID 8870161.
- Segment reporting changes were previously announced; no financial details provided.

## SEC filing metadata
- accession: 0001709682-26-000010
- form_type: 8-K
- ticker: CTOS
- cik: 0001709682
- company_name: Custom Truck One Source, Inc.
- filed_at: 2026-03-25T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1709682/000170968226000010/0001709682-26-000010-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1709682/000170968226000010/ctos-20260325.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001709682-26-000010
- JSON: https://secwatch.observer/filing/0001709682-26-000010.json
- Plain text: https://secwatch.observer/filing/0001709682-26-000010.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.