Amplitude Results Presentation Deck

(8 GAAP to Non-GAAP Reconciliation Reconciliation of gross profit and gross margin GAAP gross profit Plus: stock-based compensation expense and related employer payroll taxes Plus: amortization of acquired intangible assets Non-GAAP gross profit GAAP gross margin Non-GAAP adjustments Nan-GAAP gross margin Reconciliation of operating loss and operating margin GAAP loss from operations Plus: stock-based compensation expense and related employer payroll taxes Plus: amortization of acquired intangible assets Non-GAAP loss from operations GAAP operating margin Non-GAAP adjustments Non-GAAP operating margin Reconciliation of net loss GAAP net loss Plus: stock-based compensation expense and related employer payroll taxes Plus: amortization of acquired intangible assets Non-GAAP net loss Reconciliation of net loss per share GAAP net loss per share, basic and diluted Non-GAAP adjustments to net loss Non-GAAP net loss per share, basic and diluted Weighted average shares used in GAAP and non-GAAP per share calculation, basic and diluted Note: Certain figures may not sum due to rounding $ $ $ $ $ Three Months Ended March 31, 2023 2022 47,290 $ 1.792 422 49,504 $ 71.1% 3.3% 74.5% (29,173) 20,854 422 (7,897) (43.9%) 32.0% (11.9%) (26,315) 20,854 422 (5,039) $ 37,002 922 489 38,413 (0.23) $ 0.19 (0.04) 114,369 69.7% 2.7% 72.4% (21,991) 13,776 1111 489 (7,726) (41.4%) 26.9% (14.6%) (22,220) 13,776 489 (7,955) (0.20) 0.13 (0.07) 109,553 ¹Stock-based compensation expense-related charges include employer payroll tax-related expenses on employee stock transaction 2 Margin represents percentage of GAAP revenue © 2023 Amplitude Inc. All Rights Reserved. 20

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