GAAP to Non-GAAP Costs and Expenses Reconciliation

Global Average revenue per user $1.96 $1.56 $1.32 $1.53 $1.61 US & Canada $7.60 $6.13 $6.46 $5.92 $5.11 Q322 Q422 Q123 Q223 Q323 Q322 Q422 Q123 Q223 Q323 Europe Rest of World $0.72 $1.01 $0.74 $0.91 $0.91 $0.11 $0.14 $0.10 $0.12 $0.12 Q322 Q422 Q123 Q223 Q323 Q322 Q422 Q123 Q223 Q323 P Note: We define a monthly active user as an authenticated Pinterest user who visits our website, opens our mobile application or interacts with Pinterest through one of our browser or site extensions, such as the Save button, at least once during the 30-day period ending on the date of measurement. The number of MAUS do not include Shuffles users unless they would otherwise qualify as MAUS. We present MAUS based on the number of MAUS measured on the last day of the current period. Geographic breakdown may not sum to Global due to rounding. 2023 Pinterest. All rights reserved. +3% Global Y/Y +5% US & Canada Y/Y +26% Europe Y/Y +16% Rest of World Y/Y 8

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