---
schema_version: "secwatch.filing_event.v1"
accession: "0000707549-24-000117"
form_type: "8-K"
ticker: "LRCX"
cik: "0000707549"
company_name: "LAM RESEARCH CORP"
filed_at: "2024-09-25T23:59:59+00:00"
generated_at: "2026-05-31T01:57:10.037192+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Lam Research provides CUSIP update for 10-for-1 stock split effective Oct 2, 2024

## Summary
- New CUSIP 512807306 applies to common stock after 10-for-1 forward split.
- Stock split effective at 5:00 p.m. ET on October 2, 2024.
- Split-adjusted trading begins October 3, 2024 under symbol LRCX.
- Registered certificate holders must surrender shares to Computershare for book-entry form.
- Broker-held shares adjusted automatically; no action needed by beneficial holders.

## SEC filing metadata
- accession: 0000707549-24-000117
- form_type: 8-K
- ticker: LRCX
- cik: 0000707549
- company_name: LAM RESEARCH CORP
- filed_at: 2024-09-25T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/707549/000070754924000117/0000707549-24-000117-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/707549/000070754924000117/lrcx-20240925.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000707549-24-000117
- JSON: https://secwatch.observer/filing/0000707549-24-000117.json
- Plain text: https://secwatch.observer/filing/0000707549-24-000117.txt

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