---
schema_version: "secwatch.filing_event.v1"
accession: "0001515156-26-000045"
form_type: "8-K"
ticker: "ARQ"
cik: "0001515156"
company_name: "Arq, Inc."
filed_at: "2026-04-17T23:59:59+00:00"
generated_at: "2026-05-15T05:30:35.019861+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.3
calibrated_materiality_score: 0.3
confidence: "high"
source: SEC EDGAR
---

# ARQ extends Tax Asset Protection Plan expiration to Dec 31, 2027

## Summary
- Ninth Amendment extends TAPP final expiration to Dec 31, 2027 (or Dec 31, 2026 without stockholder approval).
- Amendment entered with Computershare Trust Company as Rights Agent.
- Plan designed to protect ARQ's tax assets from ownership changes under Section 382.
- No other material changes to the existing TAPP terms.

## SEC filing metadata
- accession: 0001515156-26-000045
- form_type: 8-K
- ticker: ARQ
- cik: 0001515156
- company_name: Arq, Inc.
- filed_at: 2026-04-17T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.3
- calibrated_materiality_score: 0.3
- confidence: high
- sec_items: 1.01, 3.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1515156/000151515626000045/0001515156-26-000045-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1515156/000151515626000045/ades-20260415.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001515156-26-000045
- JSON: https://secwatch.observer/filing/0001515156-26-000045.json
- Plain text: https://secwatch.observer/filing/0001515156-26-000045.txt

## Key facts
- Equity Issuances
  Arq, Inc. issued securities.
  source text: On April 15, 2026, Arq, Inc. (the "Company"), a Delaware corporation, entered into the Ninth Amendment to its Tax Asset Protection Plan (the "Ninth Amendment") between the Company and Computershare Trust Company, N.A. (the "Rights Agent") that amends the Company's Tax Asset Protection Plan dated May 5, 2017, as amended (the "TAPP") between the Company and the Rights Agent. The Ninth Amendment amends the definition of "Final Expiration Date" under the TAPP to extend the duration of the TAPP and makes associated changes in connection therewith.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1515156/000151515626000045/0001515156-26-000045-index.htm

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