---
schema_version: "secwatch.filing_event.v1"
accession: "0000707549-25-000078"
form_type: "8-K"
ticker: "LRCX"
cik: "0000707549"
company_name: "LAM RESEARCH CORP"
filed_at: "2025-09-11T23:59:59+00:00"
generated_at: "2026-05-17T06:56:02.972551+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Lam Research dismisses EY, appoints KPMG as auditor for FY2026

## Summary
- Auditor change effective September 8, 2025; EY dismissed, KPMG appointed for FY2026 audit.
- EY's audit reports for fiscal years 2024 and 2025 were unqualified, with no adverse opinions.
- No disagreements or reportable events occurred between Lam and EY during the relevant periods.
- EY furnished a letter to the SEC agreeing with Lam's statements, attached as Exhibit 16.1.

## SEC filing metadata
- accession: 0000707549-25-000078
- form_type: 8-K
- ticker: LRCX
- cik: 0000707549
- company_name: LAM RESEARCH CORP
- filed_at: 2025-09-11T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 4.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/707549/000070754925000078/0000707549-25-000078-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/707549/000070754925000078/lrcx-20250908.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000707549-25-000078
- JSON: https://secwatch.observer/filing/0000707549-25-000078.json
- Plain text: https://secwatch.observer/filing/0000707549-25-000078.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.