Alcon Q1 2023 Earnings Presentation

Appendix: Non-IFRS measures as defined by the Company Alcon uses certain non-IFRS metrics when measuring performance, including when measuring current period results against prior periods, including core results, percentage changes measured in constant currencies and free cash flow. Because of their non-standardized definitions, the non-IFRS measures (unlike IFRS measures) may not be comparable to the calculation of similar measures of other companies. These supplemental non-IFRS measures are presented solely to permit investors to more fully understand how Alcon management assesses underlying performance. These supplemental non- IFRS measures are not, and should not be viewed as, a substitute for IFRS measures. Core results Alcon core results, including core operating income and core net income, exclude all amortization and impairment charges of intangible assets, excluding software, net gains and losses on fund investments and equity securities valued at fair value through profit and loss ("FVPL"), fair value adjustments of financial assets in the form of options to acquire a company carried at FVPL, obligations related to product recalls, and certain acquisition related items. The following items that exceed a threshold of $10 million and are deemed exceptional are also excluded from core results: integration and divestment related income and expenses, divestment gains and losses, restructuring charges/releases and related items, legal related items, gains/losses on early extinguishment of debt or debt modifications, past service costs for post-employment benefit plans, impairments of property, plant and equipment and software, as well as income and expense items that management deems exceptional and that are or are expected to accumulate within the year to be over a $10 million threshold. Taxes on the adjustments between IFRS and core results take into account, for each individual item included in the adjustment, the tax rate that will finally be applicable to the item based on the jurisdiction where the adjustment will finally have a tax impact. Generally, this results in amortization and impairment of intangible assets and acquisition-related restructuring and integration items having a full tax impact. There is usually a tax impact on other items, although this is not always the case for items arising from legal settlements in certain jurisdictions. Alcon believes that investor understanding of its performance is enhanced by disclosing core measures of performance because, since they exclude items that can vary significantly from period to period, the core measures enable a helpful comparison of business performance across periods. For this same reason, Alcon uses these core measures in addition to IFRS and other measures as important factors in assessing its performance. A limitation of the core measures is that they provide a view of Alcon operations without including all events during a period, such as the effects of an acquisition, divestment, or amortization/impairments of purchased intangible assets and restructurings. Constant currencies Changes in the relative values of non-US currencies to the US dollar can affect Alcon's financial results and financial position. To provide additional information that may be useful to investors, including changes in sales volume, we present information about changes in our net sales and various values relating to operating and net income that are adjusted for such foreign currency effects. Constant currency calculations have the goal of eliminating two exchange rate effects so that an estimate can be made of underlying changes in the Consolidated Income Statement excluding (i) the impact of translating the income statements of consolidated entities from their non-US dollar functional currencies to the US dollar and (ii) the impact of exchange rate movements on the major transactions of consolidated entities performed in currencies other than their functional currency. Alcon calculates constant currency measures by translating the current year's foreign currency values for sales and other income statement items into US dollars, using the average exchange rates from the historical comparative period and comparing them to the values from the historical comparative period in US dollars. Free cash flow Alcon defines free cash flow as net cash flows from operating activities less cash flow associated with the purchase or sale of property, plant and equipment. Free cash flow is presented as additional information because Alcon management believes it is a useful supplemental indicator of Alcon's ability to operate without reliance on additional borrowing or use of existing cash. Free cash flow is not intended to be a substitute measure for net cash flows from operating activities as determined under IFRS. Reconciliation of guidance for forward-looking non-IFRS measures The forward-looking guidance included in this presentation cannot be reconciled to the comparable IFRS measures without unreasonable efforts, because we are not able to predict with reasonable certainty the ultimate amount or nature of exceptional items in the fiscal year. These items are uncertain, depend on many factors and could have a material impact on our IFRS results for the guidance period. Alcon 20

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