---
schema_version: "secwatch.filing_event.v1"
accession: "0001709682-24-000067"
form_type: "8-K"
ticker: "CTOS"
cik: "0001709682"
company_name: "Custom Truck One Source, Inc."
filed_at: "2024-08-20T23:59:59+00:00"
generated_at: "2026-05-31T08:28:45.208826+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Director Rahman D'Argenio resigns from Custom Truck One Source board; no replacement designated

## Summary
- Rahman D'Argenio resigned from Board and Compensation Committee effective Aug 16, 2024; not due to any disagreement.
- Energy Capital Partners, which nominated D'Argenio, does not intend to designate a replacement but retains right to do so.
- Board reduced size from 11 to 10 members upon D'Argenio's departure.

## SEC filing metadata
- accession: 0001709682-24-000067
- form_type: 8-K
- ticker: CTOS
- cik: 0001709682
- company_name: Custom Truck One Source, Inc.
- filed_at: 2024-08-20T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1709682/000170968224000067/0001709682-24-000067-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1709682/000170968224000067/ctos-20240815.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001709682-24-000067
- JSON: https://secwatch.observer/filing/0001709682-24-000067.json
- Plain text: https://secwatch.observer/filing/0001709682-24-000067.txt

## Key facts
- Executive change
  Rahman D'Argenio resigned as Director at Custom Truck One Source, Inc..
  - Action: resigned
  - Role: Director
  source text: Rahman D’Argenio informed Custom Truck One Source, Inc. (the “Company”) of his decision to resign as a member of the Board of Directors (the “Board”) of the Company and the Compensation Committee of the Board, effective August 16, 2024.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1709682/000170968224000067/0001709682-24-000067-index.htm

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