Pinterest Results Presentation Deck

Adjusted EBITDA reconciliation Reconciliation of net income (loss) to adjusted EBITDA (in millions) Net income (loss) Depreciation and amortization Share-based compensation Interest income (expense), net Other expense (income), net Provision for (benefit from) income taxes Restructuring costs Non-cash charitable contribution Adjusted EBITDA September 30, 2022 $(65.2) 10.5 136.2 (8.9) 9.7 (5.0) 0.0 0.0 $77.3 Three months ended December 31, 2022 $17.5 19.6 170.3 (16.6) (6.3) 11.3 0.0 0.0 $195.8 March 31, 2023 $(208.6) 6.2 143.1 (24.9) (0.3) (9.9) 121.3 0.0 $27.0 © 2023 Pinterest. All rights reserved. June 30, 2023 $(34.9) 5.1 169.6 (24.9) (2.2) (11.2) 5.6 0.0 $107.0 Note: Adjusted EBITDA is a non-GAAP financial measure. We define adjusted EBITDA as net income (loss) adjusted to exclude depreciation and amortization expense, share- based compensation expense, interest income (expense), net, other income (expense), net, provision for (benefit from) income taxes, restructuring charges and non-cash charitable contributions. Note: Totals may not sum due to rounding. September 30, 2023 $6.7 4.9 171.9 (26.7) 4.6 10.4 0.0 12.9 $184.7 15

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