secwatch.observer — SEC 8-K summary
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Issuer:     LAM RESEARCH CORP (LRCX)
CIK:        0000707549
Form:       8-K
Filed at:   2026-10-21T20:13:03+00:00
Accession:  0000707549-26-000052
Event type: earnings
Sentiment:  positive
Materiality: 0.85
Item codes: 2.02, 9.01
LLM model:  deepseek-v4.1-flash:cloud@v2

Lam Research sets record $8.22B revenue, EPS $2.19; guides Dec quarter to $8.60B
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- Revenue $8.22B, up 22% QoQ and 54% YoY (Sept 2025 quarter: $5.32B); GAAP diluted EPS $2.19 vs $1.81 prior quarter, non-GAAP $2.20 vs $1.82.
- GAAP gross margin 52.3% (+60 bps QoQ), operating margin 40.0% (+260 bps), net income $2.75B; non-GAAP operating margin 40.2%.
- Systems revenue $5.73B vs $4.25B in June quarter; customer support-related revenue $2.49B. China 35% of revenue, Korea 20%, Taiwan 18%, US 8%.
- December 2026 quarter guidance: revenue $8.60B +/- $400M, gross margin 52.5% +/- 1%, operating margin 40.5% +/- 1%, diluted EPS $2.33 +/- $0.15.
- Cash and equivalents rose to $7.45B from $5.60B; deferred revenue $2.66B vs $2.43B. CEO Tim Archer cites AI-driven semiconductor demand and record profit.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/707549/000070754926000052/0000707549-26-000052-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/707549/000070754926000052/lrcx-20261021.htm
  HTML page:      https://secwatch.observer/filing/0000707549-26-000052

License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer