Fuel Tech, Inc. revenue by segment FTEK

Fuel Tech, Inc. splits its revenue 2 ways in its filings. By operating segments, the largest line in Q3 of fiscal 2026, the quarter ended Sep 30, 2026 was FUELCHEM at $4.9 million, 57% of the total. By sales mix, the largest line in Q3 of fiscal 2026, the quarter ended Sep 30, 2026 was FUELCHEM at $4.9 million, 57% of the total.

USD in millions. The percent under a figure is the change from the same quarter a year earlier.

Line
TTM
Sep 30, 2026
Q3 FY2026
Sep 30, 2026
Q2 FY2026
Jun 30, 2026
Q1 FY2026
Mar 31, 2026
Q4 FY2025
Dec 31, 2025
Q3 FY2025
Sep 30, 2025
Q2 FY2025
Jun 30, 2025
Q1 FY2025
Mar 31, 2025
Q4 FY2024
Dec 31, 2024
Revenue
28
9
6
6
7
7
6
6
5
Operating segments
FUELCHEM
18
+9.2%
share 63.0%
5
+3.1%
share 56.8%
4
+21.2%
share 57.1%
4
-11.9%
share 73.6%
5
+37.4%
share 67.0%
5
share 63.9%
3
share 54.9%
5
share 79.6%
4
share 66.9%
Air Pollution Control
11
+27.4%
share 37.0%
4
+38.4%
share 43.2%
3
+11.2%
share 42.9%
2
+23.1%
share 26.4%
2
+36.7%
share 33.0%
3
share 36.1%
3
share 45.1%
1
share 20.4%
2
share 33.1%
Sales mix
FUELCHEM
18
+9.2%
share 63.0%
5
+3.1%
share 56.8%
4
+21.2%
share 57.1%
4
-11.9%
share 73.6%
5
+37.4%
share 67.0%
5
share 63.9%
3
share 54.9%
5
share 79.6%
4
share 66.9%
Technology Solutions
8
+72.4%
share 27.3%
3
+140.7%
share 34.0%
2
+26.4%
share 32.0%
1
+32.2%
share 12.4%
2
+86.5%
share 27.3%
1
share 16.4%
2
share 29.6%
1
share 8.9%
1
share 20.1%
Spare Parts
1
-12.5%
share 5.2%
0
-45.6%
share 5.3%
0
-1.9%
share 6.4%
0
+57.0%
share 6.5%
0
+18.6%
share 3.1%
1
share 11.2%
0
share 7.6%
0
share 3.9%
0
share 3.6%
Ancillary Revenue
1
-38.1%
share 4.5%
0
-47.5%
share 3.9%
0
-33.5%
share 4.5%
0
-5.4%
share 7.5%
0
-61.6%
share 2.7%
1
share 8.5%
0
share 7.8%
0
share 7.5%
1
share 9.5%
How these figures are calculated

Quarterly columns are single-quarter amounts. When a 10-Q reports only a year-to-date total, as cash flow statements do, the quarter is that total minus the previous quarter's year-to-date total. The fourth quarter is the annual report's full year minus the first nine months. A column marked YTD is a year-to-date total, shown when the earlier report needed for the single quarter is missing. USD in millions. Each group is a separate split of total revenue, so the groups are not added together. Share of revenue is that line divided by total revenue. The first column adds the latest year-to-date segment amount to the last fiscal year and subtracts the year-ago year-to-date amount. More on our methodology.

Company profile

Industry
Industrial & Commercial Fans & Blowers & Air Purifing Equip (SIC 3564)
Listed as
FTEK (Nasdaq)
Fiscal year ends
December 31
Incorporated in
DE
Headquarters
Warrenville, IL
SEC filer status
Non-accelerated filer, Smaller reporting company
SEC CIK
846913
Former names
FUEL TECH N V (until Oct 5, 2006)

Other Industrial & Commercial Fans & Blowers & Air Purifing Equip companies

Source: SEC EDGAR filings. This is company-reported data, not investment advice.