IES Holdings, 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.
- 2025-11-21: Fiscal year end 2025-09-30; Auditor Ernst & Young LLP; PCAOB firm ID 42; Location Houston, Texas.
- 2024-11-22: Fiscal year end 2024-09-30; Auditor Ernst & Young LLP; PCAOB firm ID 42; Location Houston, Texas.
- 2023-12-07: Fiscal year end 2023-09-30; Auditor Ernst & Young LLP; PCAOB firm ID 42; Location Houston, Texas.
- 2022-12-06: Fiscal year end 2022-09-30; Auditor Ernst & Young LLP; PCAOB firm ID 42; Location Houston, Texas.
| Filed | Fiscal year end | Auditor | PCAOB firm ID | Location | Internal-control attestation |
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| 2025-11-21 | 2025-09-30 | Ernst & Young LLP | 42 | Houston, Texas | Yes |
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| 2024-11-22 | 2024-09-30 | Ernst & Young LLP | 42 | Houston, Texas | Yes |
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| 2023-12-07 | 2023-09-30 | Ernst & Young LLP | 42 | Houston, Texas | Yes |
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| 2022-12-06 | 2022-09-30 | Ernst & Young LLP | 42 | Houston, Texas | Yes |
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| 2021-12-03 | 2021-09-30 | ERNST & YOUNG LLP | | Houston, Texas | Yes |
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| 2018-12-07 | 2018-09-30 | ERNST & YOUNG LLP | | Houston, Texas | |
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| 2017-12-08 | 2017-09-30 | ERNST & YOUNG LLP | | Houston, Texas | |
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| 2016-12-09 | 2016-09-30 | ERNST & YOUNG LLP | | Houston, Texas | |
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| 2015-12-11 | 2015-09-30 | ERNST & YOUNG LLP | | Houston, Texas | |
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| 2014-12-12 | 2014-09-30 | ERNST & YOUNG LLP | | Houston, Texas | |
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| 2013-12-17 | 2013-09-30 | ERNST & YOUNG LLP | | Houston, Texas | |
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| 2012-12-14 | 2012-09-30 | ERNST & YOUNG LLP | | Houston, Texas | |
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| 2012-03-30 | 2011-09-30 | ERNST & YOUNG LLP | | Houston, Texas | |
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| 2011-12-20 | 2011-09-30 | ERNST & YOUNG LLP | | Houston, Texas | |
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| 2010-12-14 | 2010-09-30 | ERNST & YOUNG LLP | | | |
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| 2009-12-14 | 2008-09-30 | Ernst & Young LLP | | Houston, Texas | |
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