# Fuel Tech, Inc.: overview FTEK · Nasdaq · CIK 846913 · [Industrials](/sectors/industrials.md) · fiscal year ends Dec 31 Pages: [Overview](/companies/ftek.md) · [Financials](/companies/ftek/financials.md) · [Filings](/companies/ftek/filings.md) · [Insiders](/companies/ftek/insiders.md) Latest reported revenue: [$6.5m](/filings/0001437749-26-025711.md) for Q2 FY2026, three months to 2026-06-30, from the 10-Q filed Aug 4, 2026 (XBRL us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax, accession 0001437749-26-025711). ## Last eight quarters | Line item | Unit | Q3 FY2024 (2024-09-30) | Q4 FY2024 (2024-12-31) | Q1 FY2025 (2025-03-31) | Q2 FY2025 (2025-06-30) | Q3 FY2025 (2025-09-30) | Q4 FY2025 (2025-12-31) | Q1 FY2026 (2026-03-31) | Q2 FY2026 (2026-06-30) | | --- | --- | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: | | Revenue | $k | [7,851](/filings/0001437749-25-033043.md) | [5,283 d](/filings/0001437749-26-006623.md) | [6,382](/filings/0001437749-26-014907.md) | [5,558](/filings/0001437749-26-025711.md) | [7,490](/filings/0001437749-25-033043.md) | [7,247 d](/filings/0001437749-26-006623.md) | [6,080](/filings/0001437749-26-014907.md) | [6,485](/filings/0001437749-26-025711.md) | | Gross margin | % | [43.4%](/filings/0001437749-25-033043.md) | [42.3% d](/filings/0001437749-26-006623.md) | [46.4%](/filings/0001437749-26-014907.md) | [45.5%](/filings/0001437749-26-025711.md) | [48.9%](/filings/0001437749-25-033043.md) | [44.6% d](/filings/0001437749-26-006623.md) | [43.5%](/filings/0001437749-26-014907.md) | [41.2%](/filings/0001437749-26-025711.md) | | Operating margin | % | [(2.3%)](/filings/0001437749-25-033043.md) | [(40.1%) d](/filings/0001437749-26-006623.md) | [(14.9%)](/filings/0001437749-26-014907.md) | [(23.5%)](/filings/0001437749-26-025711.md) | [0.1%](/filings/0001437749-25-033043.md) | [(19.7%) d](/filings/0001437749-26-006623.md) | [(26.3%)](/filings/0001437749-26-014907.md) | [(24.1%)](/filings/0001437749-26-025711.md) | | Net margin | % | [1.0%](/filings/0001437749-25-033043.md) | [(35.6%) d](/filings/0001437749-26-006623.md) | [(11.6%)](/filings/0001437749-26-025711.md) | [(12.4%)](/filings/0001437749-26-025711.md) | [4.0%](/filings/0001437749-25-033043.md) | [(16.5%) d](/filings/0001437749-26-006623.md) | [(22.3%)](/filings/0001437749-26-025711.md) | [(19.0%)](/filings/0001437749-26-025711.md) | | Diluted EPS | $ per share | [0.00](/filings/0001437749-25-033043.md) | not reported | [(0.02)](/filings/0001437749-26-014907.md) | [(0.02)](/filings/0001437749-26-025711.md) | [0.01](/filings/0001437749-25-033043.md) | not reported | [(0.04)](/filings/0001437749-26-014907.md) | [(0.04)](/filings/0001437749-26-025711.md) | | Free cash flow | $k | [767 d](/filings/0001437749-25-033043.md) | [(1,710) d](/filings/0001437749-26-006623.md) | [1,443](/filings/0001437749-26-014907.md) | [(57.0) d](/filings/0001437749-26-025711.md) | [2,966 d](/filings/0001437749-25-033043.md) | [(2,010) d](/filings/0001437749-26-006623.md) | [(1,169)](/filings/0001437749-26-014907.md) | [(971) d](/filings/0001437749-26-025711.md) | - Revenue. XBRL Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure. - Gross margin (gross profit / revenue). XBRL Gross profit: us-gaap:GrossProfit; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure. - Operating margin (operating income / revenue). XBRL Operating income: us-gaap:OperatingIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure. - Net margin (net income / revenue). XBRL Net income: us-gaap:NetIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure. - Diluted EPS. XBRL Diluted EPS: us-gaap:EarningsPerShareDiluted. - Free cash flow (operating cash flow − capital expenditure). XBRL Operating cash flow: us-gaap:NetCashProvidedByUsedInOperatingActivities; Capital expenditure: us-gaap:PaymentsToAcquireProductiveAssets. Derived values: 9-month figure less the 6-month figure; 12-month figure less the 9-month figure; 6-month figure less the 3-month figure. ## Last five fiscal years | Line item | Unit | FY2021 (2021-12-31) | FY2022 (2022-12-31) | FY2023 (2023-12-31) | FY2024 (2024-12-31) | FY2025 (2025-12-31) | | --- | --- | ---: | ---: | ---: | ---: | ---: | | Revenue | $m | [24.3](/filings/0001437749-23-005675.md) | [26.9](/filings/0001437749-24-007335.md) | [27.1](/filings/0001437749-25-006116.md) | [25.1](/filings/0001437749-26-006623.md) | [26.7](/filings/0001437749-26-006623.md) | | Gross margin | % | [49.0%](/filings/0001437749-23-005675.md) | [43.2%](/filings/0001437749-24-007335.md) | [43.0%](/filings/0001437749-25-006116.md) | [42.3%](/filings/0001437749-26-006623.md) | [46.4%](/filings/0001437749-26-006623.md) | | Operating margin | % | [(6.1%)](/filings/0001437749-23-005675.md) | [(5.7%)](/filings/0001437749-24-007335.md) | [(9.8%)](/filings/0001437749-25-006116.md) | [(18.7%)](/filings/0001437749-26-006623.md) | [(13.8%)](/filings/0001437749-26-006623.md) | | Net margin | % | [0.2%](/filings/0001437749-23-005675.md) | [(5.4%)](/filings/0001437749-24-007335.md) | [(5.7%)](/filings/0001437749-25-006116.md) | [(7.7%)](/filings/0001437749-26-006623.md) | [(8.7%)](/filings/0001437749-26-006623.md) | | Diluted EPS | $ per share | [0.00](/filings/0001437749-23-005675.md) | [(0.05)](/filings/0001437749-24-007335.md) | [(0.05)](/filings/0001437749-25-006116.md) | [(0.06)](/filings/0001437749-26-006623.md) | [(0.08)](/filings/0001437749-26-006623.md) | | Free cash flow | $m | [0.7](/filings/0001437749-23-005675.md) | [(4.3)](/filings/0001437749-24-007335.md) | [0.3](/filings/0001437749-25-006116.md) | [(3.8)](/filings/0001437749-26-006623.md) | [2.3](/filings/0001437749-26-006623.md) | - Revenue. XBRL Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. - Gross margin (gross profit / revenue). XBRL Gross profit: us-gaap:GrossProfit; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. - Operating margin (operating income / revenue). XBRL Operating income: us-gaap:OperatingIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. - Net margin (net income / revenue). XBRL Net income: us-gaap:NetIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. - Diluted EPS. XBRL Diluted EPS: us-gaap:EarningsPerShareDiluted. - Free cash flow (operating cash flow − capital expenditure). XBRL Operating cash flow: us-gaap:NetCashProvidedByUsedInOperatingActivities; Capital expenditure: us-gaap:PaymentsToAcquireProductiveAssets. Each value links to the filing it came from. d marks a derived value. A ratio is not reported when any input is missing. ## Insider purchases and sales The last 20 open-market transactions on Form 4 (codes P and S). Reported price is as stated on the form, not a market price. [All insider transactions](/companies/ftek/insiders.md) None in coverage. ## Funds that report holding it From each manager’s latest Form 13F, largest reported value first. Reported value is as filed: filing data, not a price. [All funds](/funds.md) | Fund | Quarter ended | Reported value | Shares | Put or call | Change on the quarter before | | --- | --- | ---: | ---: | --- | --- | | [GRACE & WHITE INC /NY](/funds/903064.md) | 2026-06-30 | $3.4m | 1,541,307 | | Unchanged | | [RENAISSANCE TECHNOLOGIES LLC](/funds/1037389.md) | 2026-06-30 | $2.4m | 1,102,406 | | Reduced −305,400 | | [VANGUARD CAPITAL MANAGEMENT LLC](/funds/2100119.md) | 2026-06-30 | $2.2m | 1,005,701 | | Added +17,703 | | [Peapod Lane Capital LLC](/funds/2050979.md) | 2026-06-30 | $1.8m | 820,592 | | Added +341,750 | | [GEODE CAPITAL MANAGEMENT, LLC](/funds/1214717.md) | 2026-06-30 | $1.2m | 522,983 | | Reduced −9,825 | | [BlackRock, Inc.](/funds/2012383.md) | 2026-06-30 | $1.1m | 496,493 | | Added +86,129 | | [US BANCORP \\DE\\](/funds/36104.md) | 2026-06-30 | $673.6k | 304,776 | | Unchanged | | [TWO SIGMA INVESTMENTS, LP](/funds/1179392.md) | 2026-06-30 | $372.3k | 168,457 | | Reduced −69,622 | | [Beartown Capital Management, LLC](/funds/1877162.md) | 2026-06-30 | $324.2k | 146,689 | | Unchanged | | [VANGUARD FIDUCIARY TRUST CO](/funds/933478.md) | 2026-06-30 | $294.9k | 133,459 | | Added +954 | ## Recent filings [All 695 filings](/companies/ftek/filings.md) | Filed | Accepted | Form | What it is | Accession | | --- | --- | --- | --- | --- | | 2026-09-18 | 20:02 ET | [8-K](/filings/0001437749-26-030744.md) | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001437749-26-030744 | | 2026-09-02 | 20:02 ET | [8-K](/filings/0001437749-26-029510.md) | 5.02 Departure or appointment of officers or directors | 0001437749-26-029510 | | 2026-08-04 | 21:03 ET | [10-Q](/filings/0001437749-26-025711.md) | Quarterly report, period 2026-06-30 | 0001437749-26-025711 | | 2026-08-04 | 21:01 ET | [8-K](/filings/0001437749-26-025707.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001437749-26-025707 | | 2026-08-04 | 21:00 ET | [8-K](/filings/0001437749-26-025704.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001437749-26-025704 | | 2026-06-08 | 20:02 ET | [8-K](/filings/0001437749-26-019829.md) | 5.07 Shareholder vote results | 0001437749-26-019829 | | 2026-05-05 | 20:33 ET | [10-Q](/filings/0001437749-26-014907.md) | Quarterly report, period 2026-03-31 | 0001437749-26-014907 | | 2026-05-05 | 20:30 ET | [8-K](/filings/0001437749-26-014902.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001437749-26-014902 | | 2026-04-13 | 20:03 ET | [DEF 14A](/filings/0001437749-26-012157.md) | Proxy statement, period 2026-06-04 | 0001437749-26-012157 | | 2026-03-27 | 20:05 ET | [8-K](/filings/0001437749-26-010084.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001437749-26-010084 | ## Latest annual report [Form 10-K for the fiscal year ended Dec 31, 2025](/filings/0001437749-26-006623.md), filed Mar 3, 2026. ## Forecast league Q3 FY2026, the quarter ended 2026-09-30, is open for forecasts until the first results filing for it is accepted by EDGAR. Results are due by \[object Promise\]. [Forecast this quarter](/leagues/2026q3/targets/9b430533-bbac-4f7b-87dc-ffba02852d31) ## About the filer - CIK: 846913 - Tickers: FTEK - Exchange: Nasdaq - SIC code: 3564 Industrial & Commercial Fans & Blowers & Air Purifing Equip - State of incorporation: DE - Filer category: Non-accelerated filer
Smaller reporting company Source: SEC EDGAR, XBRL company facts, the filing index and Forms 4. Last ingested by Listed: Oct 24, 2026, 15:25 ET. No prices; not investment advice.