Pinterest Results Presentation Deck

Cost of revenue GAAP to non-GAAP costs and expenses reconciliation (in millions) Research and development Sales and marketing General and administrative Total costs and expenses GAAP $129.0 163.7 120.8 87.0 $500.5 Quarter ended December 31, 2020 Share-based compensation $1.8 62.1 11.8 10.5 $86.2 Amortization $0.1 0.0 0.0 0.2 $0.3 Note: Totals may not sum due to rounding. Ⓒ2022 Pinterest. All rights reserved. Other expense $0.0 0.0 0.0 0.0 0.0 Non-GAAP $127.1 101.6 108.9 76.3 $414.0 11

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