Booking Holdings Shareholder Engagement Presentation Deck

Appendix: Unaudited Reconciliation of GAAP to Non-GAAP Financial Information (a) Favorable adjustment to OpenTable's loyalty program liability related to changes introduced in the 1st quarter of 2018 to the program, which is excluded from Net income to calculate Adjusted EBITDA. (b) (c) (d) (e) (f) (g) (h) (i) (j) Adjustments related to prior period net travel transaction tax charge (benefit) including estimated interest and penalties, where applicable, which are recorded in General and administrative expense. Interest income was recorded related to a favorable ruling for the twelve months ended December 31, 2018 and is included in Other income (expense), net. These adjustments are excluded from Net income to calculate Adjusted EBITDA. Adjustment to correct an immaterial error related to the nonpayment of prior-period wage-related tax on compensation paid to certain highly-compensated former employees in the year of separation, which is recorded in Personnel expenses and is excluded from Net income to calculate Adjusted EBITDA. Patent litigation settlement expense is recorded in General and administrative expense and excluded from Net income to calculate Adjusted EBITDA. Amounts are excluded from Net income to calculate Adjusted EBITDA. Impairment of goodwill related to our OpenTable and KAYAK reporting unit in 2020 and our OpenTable reporting unit in 2016, which are recorded in Operating expenses and are excluded from Net income to calculate Adjusted EBITDA. Loss on early extinguishment of debt and losses on related reverse treasury lock agreements which were designated as cash flow hedges are recorded in Other income (expense), net and excluded from Net income to calculate Adjusted EBITDA. Foreign currency transaction gains (losses) on the remeasurement of our Euro-denominated debt and accrued interest that are not designated as hedging instruments for accounting purposes are recorded in Other income (expense), net and excluded from Net Income to calculate Adjusted EBITDA. Net losses (gains) on equity securities with readily determinable fair values and significant gains on equity securities without readily determinable fair values are recorded in Other income (expense), net and excluded from Net income to calculate Adjusted EBITDA. Impairment of investment in DiDi Global Inc. equity securities in 2020 and impairment of other investments in 2016, principally related to our investment in Hotel Urbano, are recorded in Other income (expense), net, and excluded from Net Income to calculate Adjusted EBITDA. For (a)-(j) above, Net income, General and administrative expense, Other income (expense), net, Personnel expenses, Operating expenses and Depreciation and amortization refers to the respective line item in the consolidated financial statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2021. For a more detailed discussion of the adjustments described above, please see our earnings press release for the relevant period, including the section under the heading "Non-GAAP Financial Measures" which provides definitions and information about the use of non-GAAP financial measures. BOOKING HOLDINGS 19

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