What is Fuel Tech's operating income?

Fuel Tech (FTEK) reported operating income of -$920.25K in Q4 2025.

How has Fuel Tech's operating income changed year-over-year?

Fuel Tech's operating income increased by 21.7% year-over-year, from -$1.18M to -$920.25K.

What is the long-term trend for Fuel Tech's operating income?

Over 4 years (2021 to 2025), Fuel Tech's operating income has grown at a 25.4% compound annual growth rate (CAGR), from -$1.49M to -$3.68M.

What does operating income mean?

Gross profit minus all operating expenses (SG&A, R&D, D&A). Measures the profit from core business operations before interest, taxes, and non-operating items.

Fuel Tech FTEK Operating Income

Discontinued — last reported Q4 '25

Operating Income at other companies

Ceco EnvironmentalCECO

$1.88M-97.0%

Babcock & Wilcox EnterprisesBW

-$1.66M+10.1%

Arq, Inc.ARQ

-$982K-248%

Flotek IndustriesFTK

$7.59M+36.3%

InnospecIOSP

$36.5M-14.1%

PhiniaPHIN

$69M+11.3%

Segments

By segment

See full

FUELCHEM$2.53M—

Air Pollution Control$615K+44.7%

Other financials

Income statement

See full

Revenue$6.1M-4.7%

Gross profit$3.1M+16.6%

Net income-$1.4M-133%

EPS (diluted)-$0.02-33.3%

Balance sheet

See full

Cash & equivalents$9.1M-22.9%

Total debt$557.0K-8.2%

Total equity$38.6M-7.0%

Total assets$44.5M-4.8%

Cash flow

See full

Operating cash flow-$847.0K-156%

CapEx$322.0K+395%

Free cash flow-$1.2M-181%

Valuation

See full

Market cap$68.88M-11.2%

Enterprise value$60.32M-10.8%

P/S2.6×-0.5×

Profitability

See full

Gross margin46.4%+4.2pp

Operating margin-13.8%-2.9pp

Net margin-11.7%+13.3pp

FCF margin-9.5%—

Returns & leverage

See full

Return on equity-7.7%+12.8pp

Debt / equity0×0.0×

Current ratio5.4×-1.4×

Where this comes from

Reported directly by Fuel Tech in its filing.

Tagged under the XBRL concept us-gaap:OperatingIncomeLoss.

The official record: Fuel Tech’s 10-K, filed March 3, 2026, on SEC EDGAR. View the filing →

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Questions, answered.

What is Fuel Tech's operating income?: Fuel Tech (FTEK) reported operating income of -$920.25K in Q4 2025.
How has Fuel Tech's operating income changed year-over-year?: Fuel Tech's operating income increased by 21.7% year-over-year, from -$1.18M to -$920.25K.
What is the long-term trend for Fuel Tech's operating income?: Over 4 years (2021 to 2025), Fuel Tech's operating income has grown at a 25.4% compound annual growth rate (CAGR), from -$1.49M to -$3.68M.
What does operating income mean?: Gross profit minus all operating expenses (SG&A, R&D, D&A). Measures the profit from core business operations before interest, taxes, and non-operating items.