KLA Investor Day Presentation Deck

Reconciliation of Non-GAAP Financial Measures (In thousands, except per share amounts and percentages) GAAP net income attributable to KLA * Adjustments to reconcile GAAP net income to non-GAAP net income* Acquisition-related charges Restructuring, severance and other charges Debt extinguishment loss Goodwill and intangible asset impairment Income tax effect of non-GAAP adjustments Discrete tax items Non-GAAP net income attributable to KLA GAAP diluted EPS + Non-GAAP diluted EPS + Shares used in diluted shares calculation + a b Dec 31, 2021 $ 2,986,335 C d 9 $ $ $ 220,488 (51) (71,218) (290,331) 2,845,223 19.42 18.50 153,796 For the twelve months ended Dec 31, 2020 Dec 31, 2019 $ 1,137,653 $ 1,367,523 $ 214,533 16,885 22,538 256,649 (74,196) (10,047) 1,793,885 $ 1,391,394 8.75 $ 11.47 $ 156,339 340,318 2,786 (97,828) 8,465 $ 7.13 $ 8.73 $ 159,468 Dec 31, 2018 1,420,692 21,218 (1,229) (18,089) 1,422,592 9.13 9.14 155,689 + In multiple-quarter calculations of diluted net income per share, the shares used are an average of the weighted average fully diluted shares outstanding for the relevant quarters. Therefore, the sum of the individual quarterly diluted net income per share amounts for the quarters may not equal the calendar year or multiple-quarter diluted net income per share presented. Refer to "Reconciliation of Non-GAAP Financial Measures - Explanation of Non-GAAP Financial Measures" for detailed descriptions and information for each reconciling item KLAH Investor Day 138

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