---
schema_version: "secwatch.filing_event.v1"
accession: "0001515156-26-000020"
form_type: "8-K"
ticker: "ARQ"
cik: "0001515156"
company_name: "Arq, Inc."
filed_at: "2026-03-10T23:59:59+00:00"
generated_at: "2026-05-15T16:31:54.139372+00:00"
event_type: "earnings"
sentiment: "negative"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Arq reports record $120M revenue but $52.6M net loss; $45M impairment on Corbin; pauses GAC

## Summary
- FY 2025 revenue $120.3M (+10% YoY); Q4 revenue $29.4M.
- FY 2025 net loss $52.6M vs $5.1M loss in FY 2024; non-cash impairment charge of $45M related to Corbin assets.
- Adjusted EBITDA $13.2M in FY 2025 vs $10.5M prior year (26% improvement); Q4 Adjusted EBITDA $0.3M.
- Pausing GAC production and development for comprehensive engineering and process optimization review.
- Appointed industry veteran as VP Operations; provided inaugural financial guidance for full-year 2026.

## SEC filing metadata
- accession: 0001515156-26-000020
- form_type: 8-K
- ticker: ARQ
- cik: 0001515156
- company_name: Arq, Inc.
- filed_at: 2026-03-10T23:59:59+00:00
- event_type: earnings
- sentiment: negative
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1515156/000151515626000020/0001515156-26-000020-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1515156/000151515626000020/arq-20260309.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001515156-26-000020
- JSON: https://secwatch.observer/filing/0001515156-26-000020.json
- Plain text: https://secwatch.observer/filing/0001515156-26-000020.txt

## Key facts
- Earnings Releases
  Arq, Inc. reported the fiscal year ended December 31, 2025 results: revenue $120.3 million, net income Net loss of $52.6 million. Guidance initiated.
  - Period: the fiscal year ended December 31, 2025
  - Revenue: $120.3 million
  - Net income: Net loss of $52.6 million
  - Guidance: initiated
  - Result: reported results
  source text: • Generated revenue of $120.3 million in FY 2025 ($29.4 million in Q4 2025), up 10% over the prior year, driven largely by positive changes in product mix and overall volumes • Gross margin of 27.9% in FY 2025 vs. 36.2% in FY 2024, driven by higher costs directly related to granular activated carbon (“GAC”) start-up costs • Gross margin in Q4 2025 of 13.6% vs. 36.3% in Q4 2024, reflecting negative impact of GAC start-up costs • Recorded non-cash impairment charge of $45 million related to Corbin assets in Q4 2025, reflecting the temporary idling of the Corbin facility. • Reported Net loss of $52.6 million in FY 2025, versus a Net loss of $5.1 million in FY 2024
  evidence_url: https://www.sec.gov/Archives/edgar/data/1515156/000151515626000020/0001515156-26-000020-index.htm
- Earnings Releases
  Arq, Inc. reported the fourth quarter ended December 31, 2025 results: revenue $29.4 million, net income Net loss of $50.0 million. Guidance initiated.
  - Period: the fourth quarter ended December 31, 2025
  - Revenue: $29.4 million
  - Net income: Net loss of $50.0 million
  - Guidance: initiated
  - Result: reported results
  source text: • Generated revenue of $120.3 million in FY 2025 ($29.4 million in Q4 2025), up 10% over the prior year, driven largely by positive changes in product mix and overall volumes • Gross margin of 27.9% in FY 2025 vs. 36.2% in FY 2024, driven by higher costs directly related to granular activated carbon (“GAC”) start-up costs • Gross margin in Q4 2025 of 13.6% vs. 36.3% in Q4 2024, reflecting negative impact of GAC start-up costs • Recorded non-cash impairment charge of $45 million related to Corbin assets in Q4 2025, reflecting the temporary idling of the Corbin facility. • Reported Net loss of $52.6 million in FY 2025, versus a Net loss of $5.1 million in FY 2024; Q4 2025 Net loss of $50.0 million vs. Net loss of $1.3 million in Q4 2024
  evidence_url: https://www.sec.gov/Archives/edgar/data/1515156/000151515626000020/0001515156-26-000020-index.htm

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