---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-25-033042"
form_type: "8-K"
ticker: "FTEK"
cik: "0000846913"
company_name: "FUEL TECH, INC."
filed_at: "2025-11-04T23:59:59+00:00"
generated_at: "2026-05-17T00:47:04.644808+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Fuel Tech reports Q3 net income $303k, APC backlog up to $9.5M; acquires Wahlco IP for $350k

## Summary
- Q3 revenue $7.5M (vs $7.9M); net income $303k ($0.01/sh) vs $80k ($0.00) YoY.
- Consolidated gross margin 48.9% (vs 43.4%); Adjusted EBITDA $228k vs -$35k.
- APC backlog $9.5M at Sep 30, up from $7.8M at Jun 30 and $6.2M at Dec 31, 2024.
- Cash/investments $33.8M, no debt; FUEL CHEM revenue rose to $4.8M.
- Post-quarter: bought Wahlco IP for $350k; new FUEL CHEM demo with $2.5-3M annual potential.

## SEC filing metadata
- accession: 0001437749-25-033042
- form_type: 8-K
- ticker: FTEK
- cik: 0000846913
- company_name: FUEL TECH, INC.
- filed_at: 2025-11-04T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/846913/000143774925033042/0001437749-25-033042-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/846913/000143774925033042/ftek20251028_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-25-033042
- JSON: https://secwatch.observer/filing/0001437749-25-033042.json
- Plain text: https://secwatch.observer/filing/0001437749-25-033042.txt

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