---
schema_version: "secwatch.filing_event.v1"
accession: "0001709682-21-000078"
form_type: "8-K"
ticker: "CTOS"
cik: "0001709682"
company_name: "Custom Truck One Source, Inc."
filed_at: "2021-12-09T23:59:59+00:00"
generated_at: "2026-06-28T02:30:04.438512+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Director John-Paul Munfa resigns from Custom Truck One Source board due to Blackstone stake reduction

## Summary
- John-Paul Munfa resigned from the Board and Compensation Committee effective December 6, 2021.
- Resignation follows reduction in Common Stock ownership by Blackstone-affiliated funds.
- No disagreement with company or management cited; Board plans to fill vacancy.

## SEC filing metadata
- accession: 0001709682-21-000078
- form_type: 8-K
- ticker: CTOS
- cik: 0001709682
- company_name: Custom Truck One Source, Inc.
- filed_at: 2021-12-09T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1709682/000170968221000078/0001709682-21-000078-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1709682/000170968221000078/nsco-20211206.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001709682-21-000078
- JSON: https://secwatch.observer/filing/0001709682-21-000078.json
- Plain text: https://secwatch.observer/filing/0001709682-21-000078.txt

## Key facts
- Executive change
  John-Paul Munfa resigned as Director at Custom Truck One Source, Inc..
  - Action: resigned
  - Role: Director
  source text: On December 6, 2021, John-Paul Munfa notified the Board of Directors (the “Board”) of Custom Truck One Source, Inc. (the “Company”) of his decision to resign from the Board and the Compensation Committee of the Board, effective December 6, 2021.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1709682/000170968221000078/0001709682-21-000078-index.htm

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