Pinterest Results Presentation Deck

GAAP to non-GAAP costs and expenses reconciliation (in millions) Cost of revenue Research and development Sales and marketing General and administrative Total costs and expenses GAAP $133.5 171.7 130.3 72.6 $508.1 Quarter ended March 31, 2022 Share-based compensation $1.3 56.5 11.9 9.8 $79.5 Amortization $0.1 0.0 0.0 0.2 $0.3 Note: Totals may not sum due to rounding. © 2022 Pinterest. All rights reserved. 1: Other expense is comprised of non-cash charitable contributions. Other expense $0.0 0.0 0.0 20.5¹ 20.5 Non-GAAP $132.1 115.3 118.4 42.2 $407.9 11

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