---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-25-018151"
form_type: "8-K"
ticker: "FTEK"
cik: "0000846913"
company_name: "FUEL TECH, INC."
filed_at: "2025-05-22T23:59:59+00:00"
generated_at: "2026-05-20T19:47:57.519039+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.05
calibrated_materiality_score: 0.05
confidence: "low"
source: SEC EDGAR
---

# Fuel Tech updates corporate presentation; no material changes disclosed

## Summary
- Updated corporate presentation posted on company website as of May 21, 2025.
- No changes to financial guidance, business strategy, or operations disclosed.
- Presentation contains standard overview and forward-looking statements.

## SEC filing metadata
- accession: 0001437749-25-018151
- form_type: 8-K
- ticker: FTEK
- cik: 0000846913
- company_name: FUEL TECH, INC.
- filed_at: 2025-05-22T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.05
- calibrated_materiality_score: 0.05
- confidence: low
- sec_items: 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/846913/000143774925018151/0001437749-25-018151-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/846913/000143774925018151/ftek20250521_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-25-018151
- JSON: https://secwatch.observer/filing/0001437749-25-018151.json
- Plain text: https://secwatch.observer/filing/0001437749-25-018151.txt

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