---
schema_version: "secwatch.filing_event.v1"
accession: "0001709682-22-000029"
form_type: "8-K"
ticker: "CTOS"
cik: "0001709682"
company_name: "Custom Truck One Source, Inc."
filed_at: "2022-03-10T23:59:59+00:00"
generated_at: "2026-06-27T00:01:43.915580+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# CTOS reports FY2021 pro forma revenue up 9.4% to $1.48B; Adj. EBITDA up 9.5%; issues 2022 outlook

## Summary
- Pro forma FY revenue $1,483.6M (+9.4% YoY); pro forma Adj. EBITDA $323.1M (+9.5% YoY).
- Q4 total revenue $356.4M; Adj. EBITDA $95.6M vs $84.4M in Q3 2021.
- Q4 net loss $3.7M (improved from $20.5M in Q3); FY net loss $181.5M includes $61.7M debt extinguishment.
- 2022 guidance: revenue $1,565M-$1,750M; Adj. EBITDA $385M-$410M.
- Sales order backlog $411.6M (+21.6% sequentially); fleet utilization 83.7%.

## SEC filing metadata
- accession: 0001709682-22-000029
- form_type: 8-K
- ticker: CTOS
- cik: 0001709682
- company_name: Custom Truck One Source, Inc.
- filed_at: 2022-03-10T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1709682/000170968222000029/0001709682-22-000029-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1709682/000170968222000029/nsco-20220310.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001709682-22-000029
- JSON: https://secwatch.observer/filing/0001709682-22-000029.json
- Plain text: https://secwatch.observer/filing/0001709682-22-000029.txt

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