LRCX: Financial results

Item 2.02. Results of Operations and Financial Condition 3 Item 9.01. Financial Statements and Exhibits 3 SIGNATURES 4 EX-99.1 Table of Contents Item 2.02. Results of Operations and Financial Condition On October 21, 2026, Lam Research Corporation (the “Company”) issued a press release announcing its financial results for the fiscal quarter ended September 27, 2026. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. The information contained in this item 2.02, including Exhibit 99.1, is being furnished and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference into any filing of the Company under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing. Item 9.01. Financial Statements and Exhibits (d) Exhibits Exhibit Number Description 99.1 Press Release dated October 21, 2026 announcing financial results for the fiscal quarter ended September 27, 2026 104 Cover Page Interactive Data File - the cover page XBRL tags are embedded within the Inline XBRL document Table of Contents SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. Date: October 21, 2026 LAM RESEARCH CORPORATION (Registrant) /s/ Douglas R. Bettinger Douglas R. Bettinger Executive Vice President and Chief Financial Officer (Principal Financial Officer)