Investor Presentaiton

Appendix - reconciliation Reconciliation of U.S. GAAP Income Tax Rate to Non-GAAP Income Tax Rate (in thousands, except percentages) (unaudited) Three Months Ended September 24, June 25, 2023 2023 U.S. GAAP income before income taxes $ 1,025,630 $ U.S. GAAP income tax expense U.S. GAAP income tax rate Pre-tax non-GAAP items: 138,232 $ SASA 863,615 61,078 13.5 % 7.1 % Amortization related to intangible assets acquired through certain business combinations - cost of goods sold Elective deferred compensation related liability valuation (decrease) increase - cost of goods sold 3,149 3,093 (591) 4,288 Restructuring charges, net - cost of goods sold 7,940 11,446 Product rationalization - cost of goods sold (13,383) Transformational costs - cost of goods sold 4,269 1,634 EDC related liability valuation (decrease) increase - research and development (1,064) 7,719 Product rationalization - research and development (3,795) Amortization related to intangible assets acquired through certain business combinations - selling, general and administrative EDC related liability valuation (decrease) increase - selling, general and administrative 1,186 1,395 (709) 5,146 Product rationalization - selling, general and administrative (2,891) Transformational costs - selling, general and administrative 8,020 4,294 Restructuring charges, net - operating expenses Amortization of note discounts - other income (expense), net Loss (gain) on EDC related asset - other income (expense), net Non-GAAP income before taxes Net income tax benefit on non-GAAP items Income tax benefit on conclusion of certain tax matters Non-GAAP income tax expense Non-GAAP income tax rate 2,021 1,742 1,017 724 2,901 (16,599) $ $ SSSSA 1,053,769 3,098 141,330 $ SASASASA $ 868,428 1,146 3,079 65,303 13.4 % 7.5 % LAM RESEARCH

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