---
schema_version: "secwatch.filing_event.v1"
accession: "0001213900-25-009514"
form_type: "8-K"
ticker: "CTOS"
cik: "0001709682"
company_name: "Custom Truck One Source, Inc."
filed_at: "2025-02-03T23:59:59+00:00"
generated_at: "2026-05-27T04:00:45.964759+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Custom Truck One Source repurchases 8.1M shares at $4.00, 23% discount, from Energy Capital Partners

## Summary
- Bought 8,143,635 shares from Energy Capital Partners at $4.00/share, a 23% discount to $5.19 close.
- Aggregate purchase price of $32,574,540; shares to be held in treasury.
- Transaction approved by Board and Audit Committee.

## SEC filing metadata
- accession: 0001213900-25-009514
- form_type: 8-K
- ticker: CTOS
- cik: 0001709682
- company_name: Custom Truck One Source, Inc.
- filed_at: 2025-02-03T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1709682/000121390025009514/0001213900-25-009514-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1709682/000121390025009514/ea0229293-8k_custom.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001213900-25-009514
- JSON: https://secwatch.observer/filing/0001213900-25-009514.json
- Plain text: https://secwatch.observer/filing/0001213900-25-009514.txt

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