2022 Corporate Responsibility Report

Non-GAAP Reconciliations $ millions Reconciliation - Interest, net to Non-GAAP Interest, net 1Q23 2Q23 3Q23 4Q23 1Q24 Interest, net 27.4 24.6 21.8 20.5 19.2 Less amortization of deferred financing fees (1.2) (1.2) (1.2) (1.2) (1.5) Non-GAAP Interest, net 26.2 23.4 20.6 19.3 17.7 Effective GAAP Tax Rate to Adjusted Tax Rate: 1Q23 2Q23 3Q23 4Q23 1Q24 GAAP Rate 22.4 % 25.0 % 19.8 % 24.8 % 18.9 % Acquisition and Other Adjustments 34.8 % 26.6 % 34.9 % 14.9 % 25.3 % Adjusted Tax Rate 18.1 % 25.2 % 21.9 % 23.6 % 19.5 % 34 =4 © 2024 Gartner, Inc. and/or its affiliates. All rights reserved. Gartner

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