Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001437749-26-006623
Filing Date
2026-03-03
Accepted
2026-03-03 16:31:49
Documents
103
Period of Report
2025-12-31

Document Format Files

Seq Description Document Type Size
1 FORM 10-K ftek20251231_10k.htm   iXBRL 10-K 1519863
2 EXHIBIT 4.12 ex_921610.htm EX-4.12 89069
3 EXHIBIT 23.1 ex_884261.htm EX-23.1 3346
4 EXHIBIT 31.1 ex_884262.htm EX-31.1 9118
5 EXHIBIT 31.2 ex_884263.htm EX-31.2 9242
6 EXHIBIT 32 ex_884264.htm EX-32 7137
7 EXHIBIT 97 ex_921605.htm EX-97 34820
13 orgchart2025v1.jpg GRAPHIC 55485
  Complete submission text file 0001437749-26-006623.txt   10053824

Data Files

Seq Description Document Type Size
8 XBRL TAXONOMY EXTENSION SCHEMA ftek-20251231.xsd EX-101.SCH 87858
9 XBRL TAXONOMY EXTENSION CALCULATION LINKBASE ftek-20251231_cal.xml EX-101.CAL 93287
10 XBRL TAXONOMY EXTENSION DEFINITION LINKBASE ftek-20251231_def.xml EX-101.DEF 627547
11 XBRL TAXONOMY EXTENSION LABEL LINKBASE ftek-20251231_lab.xml EX-101.LAB 554871
12 XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE ftek-20251231_pre.xml EX-101.PRE 677285
106 EXTRACTED XBRL INSTANCE DOCUMENT ftek20251231_10k_htm.xml XML 1625316
Mailing Address 27601 BELLA VISTA PARKWAY WARRENVILLE IL 60555
Business Address 27601 BELLA VISTA PARKWAY WARRENVILLE IL 60555 6308454431
FUEL TECH, INC. (Filer) CIK: 0000846913 (see all company filings)

EIN.: 205657551 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 001-33059 | Film No.: 26715022
SIC: 3564 Industrial & Commercial Fans & Blowers & Air Purifing Equip
(CF Office: 06 Technology)