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 Interest and other expense (income), net Provision for (benefit from) income taxes Restructuring Costs Adjusted EBITDA June 30, 2022 $(43.1) 9.1 117.4 (3.4) 9.3 2.7 0.0 $92.0 Three months ended September 30, 2022 $(65.2) 10.5 136.2 (9.3) 10.1 (5.0) 0.0 $77.3 December 31, 2022 $17.5 19.6 170.3 (17.2) (5.7) 11.3 0.0 $195.8 © 2023 Pinterest. All rights reserved. March 31, 2023 $(208.6) 6.2 143.1 (24.9) (0.3) (9.9) 121.3 27.0 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 and other (income) expense, net and provision for (benefit from) income taxes, and restructuring costs. Note: Totals may not sum due to rounding. June 30, 2023 $(34.9) 5.1 169.6 (24.9) (2.2) (11.2) 5.6 107.0 16

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