---
schema_version: "secwatch.filing_event.v1"
accession: "0001515156-23-000111"
form_type: "8-K/A"
ticker: "ARQ"
cik: "0001515156"
company_name: "Arq, Inc."
filed_at: "2023-08-03T23:59:59+00:00"
generated_at: "2026-06-12T08:00:09.935018+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Advanced Emissions Solutions details CEO Greg Marken's severance and advisor agreement

## Summary
- Greg Marken transitioned out as President and CEO effective July 17, 2023, remains employee through Aug 28, 2023.
- Severance includes accelerated vesting of 49,715 restricted shares and continued eligibility for pro rata PSUs: 2021: 25,941, 2022: 15,988, 2023: 19,834.
- Advisor services agreement from Aug 28 to Sep 27, 2023 for up to 20 hours consulting with a $12,000 retainer.
- Receipt of payments and benefits subject to execution and non-revocation of a separation agreement with release of claims.
- No successor CEO announced; company continues with interim leadership from prior filing.

## SEC filing metadata
- accession: 0001515156-23-000111
- form_type: 8-K/A
- ticker: ARQ
- cik: 0001515156
- company_name: Arq, Inc.
- filed_at: 2023-08-03T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1515156/000151515623000111/0001515156-23-000111-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1515156/000151515623000111/ades-20230714.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001515156-23-000111
- JSON: https://secwatch.observer/filing/0001515156-23-000111.json
- Plain text: https://secwatch.observer/filing/0001515156-23-000111.txt

## Key facts
- Executive change
  Greg Marken changed role as President and Chief Executive Officer at Arq, Inc..
  - Action: transitioned out
  - Role: President and Chief Executive Officer
  source text: Greg Marken transitioned out of his position as the Company’s President and Chief Executive Officer effective July 17, 2023
  evidence_url: https://www.sec.gov/Archives/edgar/data/1515156/000151515623000111/0001515156-23-000111-index.htm

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