Lam Research Corp SEC filings LRCX
Lam Research Corp has 1,000 filings in SEC EDGAR's recent list, going back to Mar 13, 2015. Its latest annual report, Form ARS, was filed on Sep 24, 2026 for the period ended Jun 28, 2026. The latest quarterly report (Form 10-Q) was filed on Oct 22, 2026, covering the quarter ended Sep 27, 2026. The most recent current report (Form 8-K) was filed on Oct 21, 2026 (results of operations). The company's fiscal year ends on June 27.
| Form | Description | Filed | Period |
|---|---|---|---|
| 4 | Insider transaction | Nov 3, 2026 | Nov 2, 2026 |
| 4 | Insider transaction | Nov 2, 2026 | Oct 30, 2026 |
| 144 | Notice of proposed sale | Nov 2, 2026 | — |
| 4 | Insider transaction | Oct 26, 2026 | Oct 23, 2026 |
| 144 | Notice of proposed sale | Oct 23, 2026 | — |
| 4 | Insider transaction | Sep 10, 2026 | Sep 9, 2026 |
| 4 | Insider transaction | Sep 10, 2026 | Sep 9, 2026 |
| 144 | Notice of proposed sale | Sep 9, 2026 | — |
| 144 | Notice of proposed sale | Sep 9, 2026 | — |
| 4 | Insider transaction | Sep 3, 2026 | Sep 2, 2026 |
| 144 | Notice of proposed sale | Sep 2, 2026 | — |
| 4 | Insider transaction | Sep 1, 2026 | Aug 31, 2026 |
| 144 | Notice of proposed sale | Aug 31, 2026 | — |
| 4 | Insider transaction | Aug 7, 2026 | Aug 6, 2026 |
| 4 | Insider transaction | Aug 6, 2026 | Aug 5, 2026 |
| 144 | Notice of proposed sale | Aug 6, 2026 | — |
| 4 | Insider transaction | Jul 14, 2026 | Jul 13, 2026 |
| 144 | Notice of proposed sale | Jul 13, 2026 | — |
| 4 | Insider transaction | Jul 6, 2026 | Jul 2, 2026 |
| 144 | Notice of proposed sale | Jul 2, 2026 | — |
| 4 | Insider transaction | Jun 15, 2026 | Jun 12, 2026 |
| 4 | Insider transaction | Jun 15, 2026 | Jun 11, 2026 |
| 144 | Notice of proposed sale | Jun 12, 2026 | — |
| 144 | Notice of proposed sale | Jun 11, 2026 | — |
| 4 | Insider transaction | Jun 2, 2026 | Jun 1, 2026 |
| 144 | Notice of proposed sale | Jun 1, 2026 | — |
| 144 | Notice of proposed sale | May 14, 2026 | — |
| 4 | Insider transaction | May 4, 2026 | May 1, 2026 |
| 144 | Notice of proposed sale | May 1, 2026 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 30, 2026 | — |
| 4 | Insider transaction | Apr 28, 2026 | Apr 27, 2026 |
| 144 | Notice of proposed sale | Apr 27, 2026 | — |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Mar 27, 2026 | — |
| 4 | Insider transaction | Mar 11, 2026 | Mar 10, 2026 |
| 3 | Initial insider ownership | Mar 10, 2026 | Mar 6, 2026 |
| 4 | Insider transaction | Mar 5, 2026 | Mar 4, 2026 |
| 4 | Insider transaction | Mar 5, 2026 | Mar 4, 2026 |
| 144 | Notice of proposed sale | Mar 4, 2026 | — |
| 144 | Notice of proposed sale | Mar 4, 2026 | — |
| 4 | Insider transaction | Mar 3, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 3, 2026 | Mar 2, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Feb 27, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Feb 27, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Feb 27, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Feb 27, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Feb 27, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Feb 27, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Feb 27, 2026 |
| 4 | Insider transaction | Mar 2, 2026 | Feb 27, 2026 |
| 144 | Notice of proposed sale | Mar 2, 2026 | — |
| 144 | Notice of proposed sale | Mar 2, 2026 | — |
| 4 | Insider transaction | Feb 25, 2026 | Feb 24, 2026 |
| 4 | Insider transaction | Feb 9, 2026 | Feb 6, 2026 |
| 4 | Insider transaction | Feb 9, 2026 | Feb 6, 2026 |
| 3/A | Form 3/a | Feb 9, 2026 | Feb 3, 2026 |
| 144 | Notice of proposed sale | Feb 6, 2026 | — |
| 4 | Insider transaction | Feb 5, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 5, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 5, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 5, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 5, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 5, 2026 | Feb 3, 2026 |
| 3 | Initial insider ownership | Feb 5, 2026 | Feb 3, 2026 |
| 4 | Insider transaction | Feb 5, 2026 | Feb 4, 2026 |
| 4 | Insider transaction | Dec 18, 2025 | Dec 17, 2025 |
| 144 | Notice of proposed sale | Dec 17, 2025 | — |
| 4 | Insider transaction | Nov 17, 2025 | Nov 14, 2025 |
| 144 | Notice of proposed sale | Nov 14, 2025 | — |
| 4 | Insider transaction | Nov 10, 2025 | Nov 7, 2025 |
| 4 | Insider transaction | Nov 10, 2025 | Nov 7, 2025 |
| 4 | Insider transaction | Nov 10, 2025 | Nov 7, 2025 |
| 4 | Insider transaction | Nov 10, 2025 | Nov 7, 2025 |
| 4 | Insider transaction | Nov 10, 2025 | Nov 7, 2025 |
| 4 | Insider transaction | Nov 10, 2025 | Nov 7, 2025 |
| 4 | Insider transaction | Nov 10, 2025 | Nov 7, 2025 |
| 4 | Insider transaction | Nov 10, 2025 | Nov 7, 2025 |
| 4 | Insider transaction | Nov 10, 2025 | Nov 7, 2025 |
| 4 | Insider transaction | Nov 10, 2025 | Nov 6, 2025 |
| 144 | Notice of proposed sale | Nov 7, 2025 | — |
| 4 | Insider transaction | Nov 4, 2025 | Nov 3, 2025 |
| 4 | Insider transaction | Nov 3, 2025 | Oct 31, 2025 |
| 144 | Notice of proposed sale | Nov 3, 2025 | — |
| 4 | Insider transaction | Oct 28, 2025 | Oct 27, 2025 |
| 144 | Notice of proposed sale | Oct 27, 2025 | — |
| 4 | Insider transaction | Oct 14, 2025 | Oct 13, 2025 |
| 144 | Notice of proposed sale | Oct 14, 2025 | — |
| 4 | Insider transaction | Aug 6, 2025 | Aug 5, 2025 |
| SCHEDULE 13G/A | Amended ownership over 5% (passive) | Apr 8, 2025 | — |
| SCHEDULE 13G | Ownership over 5% (passive) | Apr 7, 2025 | — |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Mar 4, 2025 | Feb 28, 2025 |
| 4 | Insider transaction | Feb 21, 2025 | Feb 20, 2025 |
| 144 | Notice of proposed sale | Feb 20, 2025 | — |
| 4 | Insider transaction | Feb 6, 2025 | Feb 4, 2025 |
| 4 | Insider transaction | Feb 6, 2025 | Feb 4, 2025 |
| 4 | Insider transaction | Feb 6, 2025 | Feb 4, 2025 |
| 4 | Insider transaction | Feb 6, 2025 | Feb 4, 2025 |
| 4 | Insider transaction | Feb 6, 2025 | Feb 4, 2025 |
| 4 | Insider transaction | Feb 6, 2025 | Feb 4, 2025 |
| 4 | Insider transaction | Feb 6, 2025 | Feb 5, 2025 |
| 4/A | Form 4/a | Jan 21, 2025 | Nov 4, 2024 |
| 4/A | Form 4/a | Jan 21, 2025 | Nov 6, 2024 |
| 4 | Insider transaction | Nov 12, 2024 | Nov 8, 2024 |
| 4 | Insider transaction | Nov 12, 2024 | Nov 8, 2024 |
| 4 | Insider transaction | Nov 12, 2024 | Nov 8, 2024 |
| 4 | Insider transaction | Nov 12, 2024 | Nov 8, 2024 |
| 4 | Insider transaction | Nov 12, 2024 | Nov 8, 2024 |
| 4 | Insider transaction | Nov 12, 2024 | Nov 8, 2024 |
| 4 | Insider transaction | Nov 12, 2024 | Nov 8, 2024 |
| 4 | Insider transaction | Nov 12, 2024 | Nov 8, 2024 |
| 4 | Insider transaction | Nov 12, 2024 | Nov 8, 2024 |
| 4 | Insider transaction | Nov 12, 2024 | Nov 8, 2024 |
| 4 | Insider transaction | Nov 7, 2024 | Nov 6, 2024 |
| 4 | Insider transaction | Nov 5, 2024 | Nov 4, 2024 |
| 4 | Insider transaction | Nov 4, 2024 | Nov 1, 2024 |
| 144 | Notice of proposed sale | Nov 1, 2024 | — |
| 4 | Insider transaction | Nov 1, 2024 | Oct 31, 2024 |
| 4 | Insider transaction | Oct 2, 2024 | Oct 1, 2024 |
| 144 | Notice of proposed sale | Oct 1, 2024 | — |
| 4 | Insider transaction | Oct 1, 2024 | Sep 30, 2024 |
| 3 | Initial insider ownership | Sep 5, 2024 | Aug 30, 2024 |
| 3 | Initial insider ownership | Sep 5, 2024 | Aug 30, 2024 |
| 4 | Insider transaction | Aug 6, 2024 | Aug 5, 2024 |
| 4 | Insider transaction | Jul 15, 2024 | Jul 12, 2024 |
| 144 | Notice of proposed sale | Jul 12, 2024 | — |
| 3 | Initial insider ownership | Jul 10, 2024 | Jul 8, 2024 |
| 4 | Insider transaction | Jul 2, 2024 | Jun 28, 2024 |
| 4 | Insider transaction | Jul 2, 2024 | Jun 28, 2024 |
| 4 | Insider transaction | Jul 2, 2024 | Jun 28, 2024 |
| 4 | Insider transaction | Jul 2, 2024 | Jul 1, 2024 |
| 4 | Insider transaction | Jul 1, 2024 | Jun 27, 2024 |
| 144 | Notice of proposed sale | Jul 1, 2024 | — |
| 144 | Notice of proposed sale | Jun 28, 2024 | — |
| 4 | Insider transaction | May 6, 2024 | May 3, 2024 |
| 144 | Notice of proposed sale | May 3, 2024 | — |
| 4 | Insider transaction | Apr 30, 2024 | Apr 29, 2024 |
| 144 | Notice of proposed sale | Apr 29, 2024 | — |
| 4 | Insider transaction | Apr 2, 2024 | Apr 1, 2024 |
| 4 | Insider transaction | Apr 2, 2024 | Apr 1, 2024 |
| 144 | Notice of proposed sale | Apr 1, 2024 | — |
| 144 | Notice of proposed sale | Apr 1, 2024 | — |
| 4 | Insider transaction | Mar 20, 2024 | Mar 18, 2024 |
| 144 | Notice of proposed sale | Mar 19, 2024 | — |
| 144 | Notice of proposed sale | Mar 18, 2024 | — |
| 4 | Insider transaction | Mar 13, 2024 | Mar 11, 2024 |
| 4 | Insider transaction | Mar 13, 2024 | Mar 11, 2024 |
| 144 | Notice of proposed sale | Mar 11, 2024 | — |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 4 | Insider transaction | Mar 5, 2024 | Mar 1, 2024 |
| 144 | Notice of proposed sale | Feb 20, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Feb 13, 2024 | — |
| 4 | Insider transaction | Feb 8, 2024 | Feb 6, 2024 |
| 4 | Insider transaction | Feb 8, 2024 | Feb 6, 2024 |
| 4 | Insider transaction | Feb 8, 2024 | Feb 6, 2024 |
| 4 | Insider transaction | Feb 8, 2024 | Feb 6, 2024 |
| 4 | Insider transaction | Feb 8, 2024 | Feb 6, 2024 |
| 4 | Insider transaction | Feb 8, 2024 | Feb 6, 2024 |
| 4 | Insider transaction | Feb 8, 2024 | Feb 6, 2024 |
| 4 | Insider transaction | Feb 8, 2024 | Feb 7, 2024 |
| 4 | Insider transaction | Feb 2, 2024 | Feb 1, 2024 |
| 4 | Insider transaction | Feb 1, 2024 | Jan 31, 2024 |
| 144 | Notice of proposed sale | Feb 1, 2024 | — |
| SC 13G/A | Amended ownership over 5% (passive) | Jan 25, 2024 | — |
| 3 | Initial insider ownership | Jan 19, 2024 | Jan 12, 2024 |
| 4 | Insider transaction | Jan 4, 2024 | Jan 3, 2024 |
| 4 | Insider transaction | Jan 4, 2024 | Jan 3, 2024 |
| 4 | Insider transaction | Jan 3, 2024 | Jan 2, 2024 |
| 4 | Insider transaction | Jan 3, 2024 | Jan 2, 2024 |
| 144 | Notice of proposed sale | Jan 3, 2024 | — |
| 144 | Notice of proposed sale | Jan 3, 2024 | — |
| 144 | Notice of proposed sale | Jan 2, 2024 | — |
| 144 | Notice of proposed sale | Jan 2, 2024 | — |
| 4 | Insider transaction | Dec 15, 2023 | Dec 14, 2023 |
| 144 | Notice of proposed sale | Dec 14, 2023 | — |
| 4 | Insider transaction | Dec 12, 2023 | Dec 11, 2023 |
| 144 | Notice of proposed sale | Dec 11, 2023 | — |
| 4 | Insider transaction | Nov 27, 2023 | Nov 22, 2023 |
| 144 | Notice of proposed sale | Nov 22, 2023 | — |
| 4 | Insider transaction | Nov 21, 2023 | Nov 20, 2023 |
| 4 | Insider transaction | Nov 20, 2023 | Nov 17, 2023 |
| 144 | Notice of proposed sale | Nov 20, 2023 | — |
| 4 | Insider transaction | Nov 17, 2023 | Nov 16, 2023 |
| 144 | Notice of proposed sale | Nov 16, 2023 | — |
| 4 | Insider transaction | Nov 15, 2023 | Nov 14, 2023 |
| 144 | Notice of proposed sale | Nov 14, 2023 | — |
| 4 | Insider transaction | Nov 13, 2023 | Nov 10, 2023 |
| 4 | Insider transaction | Nov 13, 2023 | Nov 10, 2023 |
| 4 | Insider transaction | Nov 13, 2023 | Nov 10, 2023 |
Showing 200 filings, the most recent 200. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.
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Company profile
- Industry
- Special Industry Machinery, NEC (SIC 3559)
- Listed as
- LRCX (Nasdaq)
- Fiscal year ends
- June 27
- Incorporated in
- DE
- Headquarters
- Fremont, CA
- SEC filer status
- Large accelerated filer
- SEC CIK
- 707549
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Source: SEC EDGAR filings. This is company-reported data, not investment advice.