---
schema_version: "secwatch.filing_event.v1"
accession: "0001709682-26-000034"
form_type: "8-K"
ticker: "CTOS"
cik: "0001709682"
company_name: "Custom Truck One Source, Inc."
filed_at: "2026-06-11T15:18:55+00:00"
generated_at: "2026-06-11T15:20:07.830886+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.2
calibrated_materiality_score: 0.15
confidence: "high"
source: SEC EDGAR
---

# Custom Truck One Source stockholders elect three Class A directors and ratify EY as auditor

## Summary
- Paul Bader elected with 178.2M votes for, 23.1M withheld; Mark D. Ein with 177.8M for, 23.6M withheld; David Glatt with 176.9M for, 24.4M withheld.
- Ernst & Young LLP ratified as independent auditor for FY 2026 with 209.8M votes for, 41K against, 733K abstain.
- Broker non-votes on director elections totaled 9.15M for each nominee; no other proposals were voted on.

## SEC filing metadata
- accession: 0001709682-26-000034
- form_type: 8-K
- ticker: CTOS
- cik: 0001709682
- company_name: Custom Truck One Source, Inc.
- filed_at: 2026-06-11T15:18:55+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.2
- calibrated_materiality_score: 0.15
- confidence: high
- sec_items: 5.07, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1709682/000170968226000034/0001709682-26-000034-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1709682/000170968226000034/ctos-20260611.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001709682-26-000034
- JSON: https://secwatch.observer/filing/0001709682-26-000034.json
- Plain text: https://secwatch.observer/filing/0001709682-26-000034.txt

## Key facts
- Shareholder Votes
  Custom Truck One Source, Inc. shareholders approved Ratify the appointment of Ernst & Young LLP as independent registered public accounting firm for fiscal year ending December 31, 2026 at the 2026-06-11 meeting.
  - Proposal: auditor ratification
  - Outcome: passed
  - Meeting: 2026-06-11
  source text: In accordance with the voting results listed below, the appointment of Ernst & Young LLP was ratified by stockholders. For Against Abstain 209,767,213 41,309 733,257
  evidence_url: https://www.sec.gov/Archives/edgar/data/1709682/000170968226000034/0001709682-26-000034-index.htm
- Shareholder Votes
  Custom Truck One Source, Inc. shareholders approved Election of three Class A directors to serve until the 2029 annual meeting at the 2026-06-11 meeting.
  - Proposal: director election
  - Outcome: passed
  - Meeting: 2026-06-11
  source text: In accordance with the voting results listed below, each of the nominees was elected as a Class A director. Nominee For Withheld Broker Non-Votes Paul Bader 178,245,358 23,142,056 9,154,365
  evidence_url: https://www.sec.gov/Archives/edgar/data/1709682/000170968226000034/0001709682-26-000034-index.htm

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