Cullen/Frost Bankers, 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.
- 2026-02-05: Fiscal year end 2025-12-31; Auditor Ernst & Young LLP; PCAOB firm ID 42; Location San Antonio, Texas.
- 2025-02-06: Fiscal year end 2024-12-31; Auditor Ernst & Young LLP; PCAOB firm ID 42; Location San Antonio, Texas.
- 2024-02-06: Fiscal year end 2023-12-31; Auditor Ernst & Young LLP; PCAOB firm ID 42; Location San Antonio, Texas.
- 2023-02-03: Fiscal year end 2022-12-31; Auditor Ernst & Young LLP; PCAOB firm ID 42; Location San Antonio, Texas.
| Filed | Fiscal year end | Auditor | PCAOB firm ID | Location | Internal-control attestation |
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| 2026-02-05 | 2025-12-31 | Ernst & Young LLP | 42 | San Antonio, Texas | Yes |
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| 2025-02-06 | 2024-12-31 | Ernst & Young LLP | 42 | San Antonio, Texas | Yes |
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| 2024-02-06 | 2023-12-31 | Ernst & Young LLP | 42 | San Antonio, Texas | Yes |
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| 2023-02-03 | 2022-12-31 | Ernst & Young LLP | 42 | San Antonio, Texas | Yes |
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| 2022-02-04 | 2021-12-31 | Ernst & Young LLP | 42 | San Antonio, Texas | Yes |
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| 2011-02-03 | 2010-12-31 | Ernst & Young LLP | | San Antonio, Texas | |
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| 2010-02-02 | 2009-12-31 | Ernst & Young LLP | | San Antonio, Texas | |
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| 2009-02-03 | 2008-12-31 | Ernst & Young LLP | | San Antonio, Texas | |
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