LAM RESEARCH CORPORATION 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.
- 2026-08-07: Fiscal year end 2026-06-28; Auditor KPMG LLP; PCAOB firm ID 185; Location Santa Clara, California.
- 2025-08-11: Fiscal year end 2025-06-29; Auditor Ernst & Young LLP; PCAOB firm ID 42; Location San Jose, California.
- 2024-08-29: Fiscal year end 2024-06-30; Auditor Ernst & Young LLP; PCAOB firm ID 42; Location San Jose, California.
- 2023-08-15: Fiscal year end 2023-06-25; Auditor Ernst & Young LLP; PCAOB firm ID 42; Location San Jose, California.
| Filed | Fiscal year end | Auditor | PCAOB firm ID | Location | Internal-control attestation |
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| 2026-08-07 | 2026-06-28 | KPMG LLP | 185 | Santa Clara, California | Yes |
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| 2025-08-11 | 2025-06-29 | Ernst & Young LLP | 42 | San Jose, California | Yes |
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| 2024-08-29 | 2024-06-30 | Ernst & Young LLP | 42 | San Jose, California | Yes |
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| 2023-08-15 | 2023-06-25 | Ernst & Young LLP | 42 | San Jose, California | Yes |
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| 2022-08-24 | 2022-06-26 | Ernst & Young LLP | 42 | San Jose, California | Yes |
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| 2021-08-17 | 2021-06-27 | Ernst & Young LLP | | San Jose, California | Yes |
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| 2020-08-18 | 2020-06-28 | Ernst & Young LLP | | San Jose, California | Yes |
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| 2019-08-20 | 2019-06-30 | Ernst & Young LLP | | San Jose, California | |
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| 2018-08-14 | 2018-06-24 | Ernst & Young LLP | | San Jose, California | |
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| 2017-08-15 | 2017-06-25 | Ernst & Young LLP | | San Jose, California | |
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| 2016-08-17 | 2016-06-26 | ERNST & YOUNG LLP | | San Jose, California | |
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| 2015-08-13 | 2015-06-28 | ERNST & YOUNG LLP | | San Jose, California | |
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| 2014-08-26 | 2014-06-29 | ERNST & YOUNG LLP | | San Jose, California | |
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| 2013-08-27 | 2013-06-30 | ERNST & YOUNG LLP | | San Jose, California | |
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| 2012-08-22 | 2012-06-24 | ERNST & YOUNG LLP | | San Jose, California | |
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| 2011-08-19 | 2011-06-26 | ERNST & YOUNG LLP | | San Jose, California | |
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| 2010-08-23 | 2010-06-27 | ERNST & YOUNG LLP | | San Jose, California | |
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| 2009-08-27 | 2009-06-28 | ERNST & YOUNG LLP | | San Jose, California | |
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