AMPCO-PITTSBURGH CORP 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.
- 2026-03-16: Fiscal year end 2025-12-31; Auditor BDO USA, P.C.; PCAOB firm ID 243; Location Pittsburgh, Pennsylvania.
- 2025-03-17: Fiscal year end 2024-12-31; Auditor BDO USA, P.C.; PCAOB firm ID 243; Location Pittsburgh, Pennsylvania.
- 2024-03-25: Fiscal year end 2023-12-31; Auditor BDO USA, P.C.; PCAOB firm ID 243; Location Pittsburgh, Pennsylvania.
- 2023-03-21: Fiscal year end 2022-12-31; Auditor BDO USA, LLP; PCAOB firm ID 243; Location Pittsburgh, Pennsylvania.
| Filed | Fiscal year end | Auditor | PCAOB firm ID | Location | Internal-control attestation |
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| 2026-03-16 | 2025-12-31 | BDO USA, P.C. | 243 | Pittsburgh, Pennsylvania | No |
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| 2025-03-17 | 2024-12-31 | BDO USA, P.C. | 243 | Pittsburgh, Pennsylvania | No |
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| 2024-03-25 | 2023-12-31 | BDO USA, P.C. | 243 | Pittsburgh, Pennsylvania | No |
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| 2023-03-21 | 2022-12-31 | BDO USA, LLP | 243 | Pittsburgh, Pennsylvania | No |
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| 2022-03-17 | 2021-12-31 | BDO USA, LLP | 243 | Pittsburgh, Pennsylvania | No |
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| 2021-03-26 | 2020-12-31 | BDO USA, LLP | | Pittsburgh, Pennsylvania | |
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| 2020-03-16 | 2019-12-31 | Deloitte & Touche LLP | | Pittsburgh, Pennsylvania | |
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| 2019-03-18 | 2018-12-31 | Deloitte & Touche LLP | | Pittsburgh, Pennsylvania | |
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| 2018-03-16 | 2017-12-31 | Deloitte & Touche LLP | | Pittsburgh, Pennsylvania | |
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| 2014-03-17 | 2013-12-31 | Deloitte & Touche LLP | | Pittsburgh, Pennsylvania | |
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| 2013-03-15 | 2012-12-31 | Deloitte & Touche LLP | | Pittsburgh, Pennsylvania | |
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| 2011-03-16 | 2010-12-31 | Deloitte & Touche LLP | | Pittsburgh, Pennsylvania | |
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| 2010-03-16 | 2009-12-31 | Deloitte & Touche LLP | | Pittsburgh, Pennsylvania | |
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| 2009-03-13 | 2008-12-31 | Deloitte & Touche LLP | | Pittsburgh, Pennsylvania | |
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