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AI brief of an SEC Form 8-K · Lam Research (LRCX)

Lam Research December-quarter revenue $5.34 billion; March guidance $5.70 billion

Positive Impact 3 of 5 earnings Written later

Lam Research reported revenue of $5.34 billion and U.S. GAAP diluted EPS of $1.26 for the quarter ended December 28, 2025, both up from the September 2025 quarter. The company guided March 2026 quarter revenue to $5.70 billion, plus or minus $300 million, and GAAP diluted EPS to $1.35, plus or minus $0.10, which is above the December quarter results.

Key points

  • Revenue was $5.34 billion, compared with $5.32 billion in the September 2025 quarter and $4.38 billion a year earlier.
  • U.S. GAAP diluted EPS was $1.26, up from $1.24; non-GAAP diluted EPS was $1.27, up from $1.26.
  • U.S. GAAP gross margin fell to 49.6% from 50.4%, and operating income as a percentage of revenue fell to 33.9% from 34.4%.
  • Guidance for the quarter ending March 29, 2026: revenue of $5.70 billion plus or minus $300 million and U.S. GAAP diluted EPS of $1.35 plus or minus $0.10.

The filing

CompanyLam Research (LRCX)
Form8-K, current report
Filed with the SECJan 28, 2026, 4:06 PM ET
Accession number0000707549-26-000006

Items reported: 2.02 Results of Operations

Read the filing on SEC.gov ↗

Written by AI on Nov 8, 2026, 2:16 AM ET, from this filing only. Written later: this filing was briefed after the fact, when past filings were added to the site, so the brief may be read with hindsight; the filing itself is the record of what was known on January 28, 2026.

Briefs are written by AI from the filing text and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the AI's reading of the filing for shareholders, not a price forecast. Not investment advice.