FUEL TECH, INC. Auditor
The independent registered public accounting firm that signed the audit report in each annual report on Form 10-K, newest first. PCAOB firm ID and the internal-control attestation are as tagged on the cover from fiscal 2021; earlier rows come from the signed report text.
- 2026-03-03: Fiscal year end 2025-12-31; Auditor RSM US LLP; PCAOB firm ID 49; Location Chicago, Illinois.
- 2025-03-04: Fiscal year end 2024-12-31; Auditor RSM US LLP; PCAOB firm ID 49; Location Chicago, Illinois.
- 2024-03-11: Fiscal year end 2023-12-31; Auditor RSM US LLP; PCAOB firm ID 49; Location Chicago, Illinois.
- 2023-03-07: Fiscal year end 2022-12-31; Auditor RSM US LLP; PCAOB firm ID 49; Location Chicago, Illinois.
| Filed | Fiscal year end | Auditor | PCAOB firm ID | Location | Internal-control attestation |
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| 2026-03-03 | 2025-12-31 | RSM US LLP | 49 | Chicago, Illinois | No |
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| 2025-03-04 | 2024-12-31 | RSM US LLP | 49 | Chicago, Illinois | No |
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| 2024-03-11 | 2023-12-31 | RSM US LLP | 49 | Chicago, Illinois | No |
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| 2023-03-07 | 2022-12-31 | RSM US LLP | 49 | Chicago, Illinois | No |
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| 2022-03-08 | 2021-12-31 | RSM US LLP | 49 | Chicago, Illinois | No |
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| 2021-03-15 | 2020-12-31 | RSM US LLP | | Chicago, Illinois | |
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| 2020-03-12 | 2019-12-31 | RSM US LLP | | Chicago, Illinois | |
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| 2019-03-14 | 2018-12-31 | RSM US LLP | | Chicago, Illinois | |
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| 2018-03-12 | 2017-12-31 | RSM US LLP | | Chicago, Illinois | |
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| 2017-03-14 | 2016-12-31 | RSM US LLP | | Chicago, Illinois | |
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| 2016-03-24 | 2015-12-31 | RSM US LLP | | Chicago, Illinois | |
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| 2015-03-16 | 2014-12-31 | McGladrey LLP | | Schaumburg, Illinois | |
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| 2014-03-10 | 2013-12-31 | McGladrey LLP | | Schaumburg, Illinois | |
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| 2013-04-01 | 2012-12-31 | McGladrey LLP | | Schaumburg, Illinois | |
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| 2012-03-05 | 2011-12-31 | McGladrey & Pullen, LLP | | Schaumburg, Illinois | |
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| 2011-03-09 | 2010-12-31 | McGladrey & Pullen, LLP | | Schaumburg, Illinois | |
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| 2010-03-04 | 2009-12-31 | GRANT THORNTON LLP | | Chicago, Illinois | |
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