Welcome to our dedicated page for Lam Research SEC filings (Ticker: LRCX), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
The Lam Research Corporation (NASDAQ: LRCX) SEC filings page provides access to the company’s official regulatory disclosures, offering detailed insight into its operations as a global supplier of wafer fabrication equipment and services to the semiconductor industry. These documents are a primary source for understanding Lam’s financial performance, governance, capital structure, and key corporate decisions.
Investors can review current reports on Form 8-K, where Lam reports material events such as quarterly financial results, changes in its independent registered public accounting firm, and outcomes of stockholder meetings. For example, Lam has used Form 8-K to furnish earnings releases for quarters ended June 29, 2025 and September 28, 2025, to disclose the transition of its independent auditor from Ernst & Young LLP to KPMG LLP, and to report stockholder approval of the Lam 2025 Stock Incentive Plan and amendments to its Restated Certificate of Incorporation.
The company’s definitive proxy statement on Schedule 14A provides extensive information on corporate governance, board composition, executive compensation, equity incentive plans, and the items submitted to stockholders for vote at the annual meeting. This includes proposals related to director elections, advisory votes on executive compensation, auditor ratification, amendments to the certificate of incorporation, and stockholder proposals.
Through Lam’s annual and quarterly reports filed on Forms 10-K and 10-Q, users can examine comprehensive financial statements, management’s discussion and analysis, risk factors, and segment and geographic revenue details relevant to the semiconductor machinery manufacturing business. These filings complement the summarized data in earnings releases and help explain trends in systems revenue, customer support-related revenue, margins, cash balances, and other key metrics.
On Stock Titan, Lam Research filings are updated as they are posted to the SEC’s EDGAR system. AI-powered tools can assist by highlighting important sections, summarizing complex disclosures, and helping users locate information on topics such as stock incentive plans, auditor changes, dividend declarations, and board-authorized corporate actions. This makes it easier to interpret lengthy documents like 10-Ks, 10-Qs, and proxy statements, and to track how Lam’s regulatory reporting reflects its role in the semiconductor equipment industry.
Lam Research Corporation filed a current report to share that it has released financial results for its fiscal quarter ended December 28, 2025. The company distributed these results through a press release dated January 28, 2026, which is attached as Exhibit 99.1.
The disclosure is made under Item 2.02, relating to results of operations and financial condition, and is expressly treated as “furnished,” not “filed,” under securities laws. This limits how the information in the press release is incorporated into other regulatory filings and how certain legal liabilities apply.
Lam Research Corp. reported insider trading activity by its President and CEO on 12/17/2025. The filing shows sales and an option exercise in Lam Research common stock carried out under a Rule 10b5-1 trading plan adopted on August 19, 2025.
The CEO sold 50,000 shares of common stock at $163.86 per share, then exercised an employee stock option for 113,300 shares at an exercise price of $17.675 per share. Those 113,300 shares were then sold on the same day at $163.86 per share. After these transactions, the CEO directly beneficially owned 932,409 shares of Lam Research common stock, which includes shares subject to unvested restricted stock units.
The filing also lists indirect holdings of 48,025.816 shares through a 401(k) plan and 5,670.097 shares through the spouse's 401(k) plan, reflecting additional indirect economic exposure to Lam Research stock.
LAM RESEARCH CORP executive leadership reported an insider share sale. The company’s Chief Financial Officer and Executive Vice President filed a Form 4 disclosing the sale of 40,080 shares of common stock on 11/14/2025. The transaction was coded as a sale and carried a weighted average sale price of $150.6 per share, based on multiple trades within a narrow price range. Following this transaction, the officer reports beneficial ownership of 987,237 shares of Lam Research common stock, which includes shares subject to unvested restricted stock units.
Lam Research (LRCX) director reported insider transactions. On 11/07/2025, the reporting person acquired 1,635 shares at $0 and sold 30 shares at $159.52 pursuant to a Rule 10b5-1 trading plan adopted on November 12, 2024. On 11/10/2025, 1,622 shares were transferred as a gift to the Mayer Family Trust for no consideration.
Following these transactions, the reporting person held 1,635 shares directly and 30,552 shares indirectly via the trust. The filing notes that the person is trustee and the trust’s beneficiaries are the reporting person and immediate family, and that the reporting person remains the beneficial owner of the trust-held securities.
Lam Research (LRCX) disclosed that a company director acquired 1,635 shares of common stock on 11/07/2025 at a reported price of $0.
After this transaction, the director beneficially owned 18,475 shares, held directly. The reported total includes shares subject to unvested restricted stock units.
Lam Research (LRCX) Form 4: A director acquired 1,635 shares of common stock on 11/07/2025 at a price of $0. Following this transaction, the director beneficially owns 9,664 shares.
The filing notes that the reported amount includes shares subject to unvested restricted stock units. Ownership is listed as direct.
Lam Research (LRCX) reported an insider transaction by a director. On 11/07/2025, the director acquired 1,635 shares of common stock at $0. Following the transaction, the director beneficially owned 5,322 shares directly and 560 shares indirectly via a trust. The reported direct amount includes shares subject to unvested restricted stock units.
Lam Research (LRCX) director reported the acquisition of 1,635 shares of common stock at $0 on 11/07/2025, according to a Form 4.
Following the transaction, the reporting person beneficially owned 9,135 shares, held in direct ownership. The filing notes this amount includes shares subject to unvested restricted stock units.
Lam Research (LRCX): A company director reported an equity grant on a Form 4. On 11/07/2025, the director acquired 1,635 shares of common stock at $0, typically reflecting a stock or restricted stock unit award. Following this transaction, the director beneficially owned 191,375 shares.
The reported total includes shares subject to unvested restricted stock units, and the ownership is listed as direct.
Lam Research (LRCX) filed a Form 4 reporting insider activity. A director acquired 1,635 shares of common stock at a price of $0 on 11/07/2025. Following this transaction, the director’s beneficial ownership stands at 5,342 shares, held directly.
The footnote states the reported amount includes shares subject to unvested restricted stock units.