---
schema_version: "secwatch.filing_event.v1"
accession: "0001515156-25-000026"
form_type: "8-K"
ticker: "ARQ"
cik: "0001515156"
company_name: "Arq, Inc."
filed_at: "2025-04-02T23:59:59+00:00"
generated_at: "2026-05-23T23:34:32.653159+00:00"
event_type: "leadership"
sentiment: "positive"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Arq appoints 35-year finance veteran Jay Voncannon as CFO effective April 2, 2025

## Summary
- Jay Voncannon appointed CFO of Arq effective April 2, 2025.
- Annual base salary $250,000; target bonus 100% of salary; 50,000 restricted shares vesting in 2 years.
- Voncannon was CFO of CoorsTek and spent 20+ years at Koch Industries.
- Stacia Hansen steps down as principal financial officer but remains CAO.
- Appointment positions Arq for accelerated growth in activated carbon market.

## SEC filing metadata
- accession: 0001515156-25-000026
- form_type: 8-K
- ticker: ARQ
- cik: 0001515156
- company_name: Arq, Inc.
- filed_at: 2025-04-02T23:59:59+00:00
- event_type: leadership
- sentiment: positive
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1515156/000151515625000026/0001515156-25-000026-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1515156/000151515625000026/ades-20250331.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001515156-25-000026
- JSON: https://secwatch.observer/filing/0001515156-25-000026.json
- Plain text: https://secwatch.observer/filing/0001515156-25-000026.txt

## Key facts
- Executive change
  Jay L. Voncannon was appointed as Chief Financial Officer at Arq, Inc..
  - Action: appointed
  - Role: Chief Financial Officer
  source text: On March 31, 2025 and effective April 2, 2025 (the "Effective Date"), the Board of Directors (the “Board”) of Arq, Inc. (the “Company”) appointed Jay L. Voncannon, 59, as the Company’s Chief Financial Officer
  evidence_url: https://www.sec.gov/Archives/edgar/data/1515156/000151515625000026/0001515156-25-000026-index.htm
- Executive change
  Stacia Hansen changed role as Chief Accounting Officer at Arq, Inc..
  - Action: stepped down as principal financial officer
  - Role: Chief Accounting Officer
  source text: Upon Mr. Voncannon's appointment, Stacia Hansen will no longer serve as the Company’s principal financial officer, but will continue to serve as the Company’s Chief Accounting Officer, principal accounting officer, and key leadership positions she assumed in November 2023.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1515156/000151515625000026/0001515156-25-000026-index.htm

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