---
schema_version: "secwatch.filing_event.v1"
accession: "0001437749-21-019314"
form_type: "8-K"
ticker: "FTEK"
cik: "0000846913"
company_name: "FUEL TECH, INC."
filed_at: "2021-08-10T23:59:59+00:00"
generated_at: "2026-06-29T17:39:54.217677+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.65
calibrated_materiality_score: 0.65
confidence: "high"
source: SEC EDGAR
---

# Fuel Tech Q2 2021 revenue rises 18.6% to $5.2M; net loss narrows to $0.8M

## Summary
- Revenue $5.2M (+18.6% YoY); net loss $0.8M ($0.03/sh) vs $2.5M ($0.10/sh) in Q2 2020.
- FUEL CHEM segment revenue up 71.8% to $4.2M on new TIFI installations and higher power demand.
- APC segment revenue fell to $1.0M from $1.9M due to pandemic project delays.
- Gross margin improved to 49.5% (40% excluding prior-year $1.1M warranty charge).
- Cash $36.6M, no debt; APC backlog $4.9M at June 30, plus $4.5M new contracts in July.

## SEC filing metadata
- accession: 0001437749-21-019314
- form_type: 8-K
- ticker: FTEK
- cik: 0000846913
- company_name: FUEL TECH, INC.
- filed_at: 2021-08-10T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.65
- calibrated_materiality_score: 0.65
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/846913/000143774921019314/0001437749-21-019314-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/846913/000143774921019314/ftek20210804_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001437749-21-019314
- JSON: https://secwatch.observer/filing/0001437749-21-019314.json
- Plain text: https://secwatch.observer/filing/0001437749-21-019314.txt

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