---
schema_version: "secwatch.filing_event.v1"
accession: "0000707549-22-000097"
form_type: "8-K"
ticker: "LRCX"
cik: "0000707549"
company_name: "LAM RESEARCH CORP"
filed_at: "2022-07-27T23:59:59+00:00"
generated_at: "2026-06-24T08:22:50.291416+00:00"
event_type: "earnings"
sentiment: "positive"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Lam Research Q4 revenue $4.64B, GAAP EPS $8.74, guided Q1 revenue $4.9B

## Summary
- Revenue $4.635B, +14% QoQ; GAAP diluted EPS $8.74, +20% QoQ; Non-GAAP diluted EPS $8.83.
- GAAP gross margin 45.3%; operating margin 31.9%; record revenue and EPS in the quarter.
- Systems revenue $3.006B; customer support revenue $1.629B; China 31%, Korea 24%, Taiwan 19%.
- September quarter guidance: revenue $4.9B ±$300M; GAAP diluted EPS $9.48 ±$0.75; Non-GAAP $9.50.
- Cash and investments $3.9B; repurchased $876M of shares and paid $208M in dividends during Q4.

## SEC filing metadata
- accession: 0000707549-22-000097
- form_type: 8-K
- ticker: LRCX
- cik: 0000707549
- company_name: LAM RESEARCH CORP
- filed_at: 2022-07-27T23:59:59+00:00
- event_type: earnings
- sentiment: positive
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 2.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/707549/000070754922000097/0000707549-22-000097-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/707549/000070754922000097/lrcx-20220727.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0000707549-22-000097
- JSON: https://secwatch.observer/filing/0000707549-22-000097.json
- Plain text: https://secwatch.observer/filing/0000707549-22-000097.txt

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