SEC 8-K and 6-K filings classified by Claude with reasoning, plus Form 4 insider transactions. Ingested from EDGAR’s filing stream in near-real time, reconciled overnight.
Open-market buys and sells only — the deliberate trades. Zero here doesn’t mean no filings: grants, option exercises and tax withholding (below) are compensation, not market trades.
| Insider | Role | Date | Transaction | Shares | Value |
|---|---|---|---|---|---|
| ARCHER TIMOTHY | President and CEO | 2026-09-09 | Option exercise 10b5-1 | 30000 | $901K |
| ARCHER TIMOTHY | President and CEO | 2026-09-09 | Open-market sell 10b5-1 | 30000 | $9.6M |
| Mayer Bethany | Director | 2026-09-09 | Open-market sell | 9557 | $3.0M |
| Varadarajan Seshasayee | Senior Vice President | 2026-09-02 | Open-market sell 10b5-1 | 20000 | $5.8M |
| Varadarajan Seshasayee | Senior Vice President | 2026-09-02 | Option exercise 10b5-1 | 12270 | $735K |
| Varadarajan Seshasayee | Senior Vice President | 2026-09-02 | Open-market sell 10b5-1 | 12270 | $3.6M |
| Varadarajan Seshasayee | Senior Vice President | 2026-09-02 | Option exercise 10b5-1 | 27480 | $825K |
| Varadarajan Seshasayee | Senior Vice President | 2026-09-02 | Open-market sell 10b5-1 | 27480 | $8.0M |
| Harter Ava | Chief Legal Officer | 2026-08-31 | Open-market sell 10b5-1 | 5000 | $1.5M |
| ARCHER TIMOTHY | President and CEO | 2026-08-06 | Option exercise 10b5-1 | 30000 | $901K |
| ARCHER TIMOTHY | President and CEO | 2026-08-06 | Open-market sell 10b5-1 | 30000 | $9.0M |
| Harter Ava | Chief Legal Officer | 2026-08-05 | Tax withholding | 5790 | $1.8M |
| TALWALKAR ABHIJIT Y | Director | 2026-07-13 | Open-market sell 10b5-1 | 18282 | $6.1M |
| ARCHER TIMOTHY | President and CEO | 2026-07-02 | Option exercise 10b5-1 | 30000 | $901K |
| ARCHER TIMOTHY | President and CEO | 2026-07-02 | Open-market sell 10b5-1 | 30000 | $11.7M |
| BRANDT ERIC | Director | 2026-06-12 | Open-market sell 10b5-1 | 300 | $107K |
| BRANDT ERIC | Director | 2026-06-12 | Open-market sell 10b5-1 | 1393 | $498K |
| BRANDT ERIC | Director | 2026-06-12 | Open-market sell 10b5-1 | 1100 | $394K |
| BRANDT ERIC | Director | 2026-06-12 | Open-market sell 10b5-1 | 3828 | $1.4M |
| BRANDT ERIC | Director | 2026-06-12 | Open-market sell 10b5-1 | 1906 | $686K |
Fiscal period ending 2026-06-28 versus 2025-06-29 — view filing on EDGAR →
Lam Research's risk profile has materially worsened across five distinct themes, driven primarily by a sweeping expansion of AI-related exposures spanning cybersecurity, competitive dynamics, and demand volatility. Technology and cybersecurity risks saw the sharpest escalation, with new disclosures covering AI-specific attack vectors (prompt injection, agentic AI, hallucinations), third-party IP dependency, law enforcement/national security investigations, and AI-driven obsolescence threatening Lam's process-development role. Macro and competitive risks also broadened, with new Middle East supply chain disruption language and AI demand uncertainty—slower adoption, oversupply, and regulatory headwinds—adding material uncertainty to core revenue drivers.
6 company-specific · 6 common-mode
Added specific AI-driven demand risk with concrete scaling and hiring challenges; escalates from generic cyclicality to material competitive/operational pressure.
The Semiconductor Capital Equipment Industry Is Subject to Variability and Periods of Rapid Growth or Decline; We Therefore Face Risks Related to Our Strategic Resource Allocation Decisions The…
New disclosure of Middle East conflict impact on semiconductor supply chain, including oil/commodity disruptions and Strait of Hormuz closure affecting critical inputs.
Our Future Success Depends Heavily on International Sales and the Management of Global Operations Non-U.S. sales accounted for approximately 93% of total revenue in each of the fiscal years 2026…
New disclosure of law enforcement investigations into misuse of third-party technology/IP and national security risks, plus expanded consequences including criminal liability and reputational damage.
Intellectual Property, Indemnity, Misuse of Third-Party Information, and Other Claims Against Us Can Be Costly and We Could Lose Significant Rights That Are Necessary to Our Continued Business and…
Added explicit AI-driven obsolescence risk and customer reduced reliance on Lam for process development, escalating competitive threat beyond prior generic technology change language.
INDUSTRY AND CUSTOMER RISKS We Depend on Creating New Products and Processes and Enhancing Existing Products and Processes for Our Success; Consequently, We Are Subject to Risks Associated with Rapid…
Added explicit dependency on third-party licensed technology and risk of infringement/misappropriation. Expands IP risk scope beyond owned patents to include reliance on external technology.
We May Fail to Protect Our Critical Proprietary Technology Rights, Which Could Affect Our Business Our success depends in part on our proprietary technology and the proprietary technology of others…
Added specific disclosure of active hiring need for field/manufacturing personnel and competitive disadvantage versus better-resourced competitors, escalating workforce risk.
Our Ability to Attract, Retain, and Motivate Key Employees Is Critical to Our Success Our ability to compete successfully depends in large part on our ability to attract, retain, and motivate key…
New disclosure of material AI risks: IP uncertainty, competitive disadvantage, data breach exposure, and operational failure risks that could adversely affect results and reputation.
We Use Artificial Intelligence in Our Business, and Challenges with Properly Managing Its Use Could Result in Reputational Harm, Competitive Harm, and Legal Liability, and Materially and Adversely…
Added substantial new risk disclosure on AI demand volatility, including slower adoption, oversupply, and regulatory risks—material new uncertainties affecting revenue drivers.
Future Declines in the Semiconductor Industry, and the Overall World Economic Conditions on Which It Is Significantly Dependent, Could Have a Material Adverse Impact on Our Results of Operations and…
Added AI as competitive pressure and new risk of competitors acquiring key suppliers, limiting access to critical inputs and technologies.
We Face a Challenging and Complex Competitive Environment We face significant competition from multiple competitors, and our competitors may be able to develop products comparable or superior to…
Added specific AI infrastructure demand risk and expanded export control language. Escalated macro risks from generic list to explicit recession/stagnation concerns and geopolitical conflicts.
BUSINESS AND OPERATIONAL RISKS Our Revenues and Results of Operations Are Variable Our revenues and results of operations may fluctuate significantly from quarter to quarter or year to year due to a…
Substantially expanded AI-specific cybersecurity risks: prompt injection, hallucinations, agentic AI circumventing controls, credential misuse, and pace of vulnerability exploitation outpacing patches. Material escalation of threat landscape.
Our Business Relies on Technology, Data, Intellectual Property and Other Sensitive Information That is Susceptible to Cybersecurity and Other Threats or Incidents Our business is dependent upon the…
Expanded scope of regulatory risks including national security, foreign investment, employment, product safety, human rights. Acknowledges past non-compliance instances and increased regulatory complexity.
We Are Exposed to Various Risks from Our Regulatory Environment We are subject to various risks in the jurisdictions in which we operate related to (1) new, different, inconsistent, or even…
Fiscal period ending 2025-06-29 versus 2024-06-30 — view filing on EDGAR →
China revenue erosion — down from 42% to 34% — combined with newly disclosed competitive-position weakening signals a material and accelerating geopolitical headwind. Export controls now carry a second-order risk: they may structurally advantage unrestricted competitors, compounding the revenue loss. Rare earth dependencies and broader supply chain vulnerabilities add downstream exposure that was not previously flagged.
1 company-specific · 1 common-mode
China revenue dropped from 42% to 34% year-over-year, signaling material adverse impact. New language about competitive position weakening escalates severity.
Our Sales to Customers in China, a Significant Region for Us, Have Been Impacted, and are Likely to Be Materially and Adversely Affected by Export License Requirements and Other Regulatory Changes…
Added explicit risk that export controls may strengthen competitors not subject to restrictions and new disclosure of downstream supply chain vulnerabilities from rare earth elements, tariffs, and geopolitical tensions.
Our Future Success Depends Heavily on International Sales and the Management of Global Operations Non-U.S. sales, as reflected in Part II Item 7. Results of Operations of this 2025 Form 10-K…
Two board directors, Sohail U. Ahmed and Michael R. Cannon, are retiring effective November 2, 2026. Cannon's departure is particularly material given his 16-year tenure, including 12 years on the audit committee and 7 years as chair of the nominating and governance committee, representing a significant loss of institutional knowledge and governance leadership.
View raw filing on EDGAR →Lam Research reported financial results for the quarter ended June 28, 2026, with record revenue of $6.72 billion, GAAP diluted EPS of $1.81 ($1.82 non-GAAP), and gross margin of 51.7% GAAP (52.0% non-GAAP), driven by AI-driven demand. The company provided forward guidance for the next quarter.
View raw filing on EDGAR →