Amplitude Results Presentation Deck

(8 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 GAAP to Non-GAAP Reconciliation Non-GAAP adjustments Non-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 Plus: direct listing expenses 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 Plus: direct listing expenses 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 June 30, 2022 2021 41,070 1,669 494 43,233 70.7% 3.7% 74.4% (24,583) 15,090 494 (8,999) (42.3%) 26.8% (15.5%) (24,568) 15,090 494 (8,984) $ $ $ $ $ (0.22) $ 0.14 (0.08) $ 111,036 27,119 247 429 27,795 69.1% 1.7% 70.8% (9,747) 3,086 429 2,086 (4,146) (24.8%) 14.3% (10.6%) (10,083) 3,086 429 2,086 (4,482) (0.34) 0.19 (0.15) 29,681 $ $ $ $ $ $ $ Six Months Ended June 30, 2022 2021 78,072 2,591 983 81,646 70.2% 3.2% 73.4% (46,574) 28,866 983 (46,788) 28,866 983 $ (16,725) $ (41.9%) 26.8% (15.0%) (16,939) $ $ $ (0.42) 0.27 (0.15) $ 110,297 $ 49,974 483 651 51,108 69.1% 1.6% 70.6% (15,896) 5,714 651 2,139 (7,392) (22.0%) 11.8% (10.2%) (16,522) 5,714 651 2,139 (8,018) (0.57) 0.29 (0.28) 28,808 ¹ Stock-based compensation expense-related charges include employer payroll tax-related expenses on employee stock transactions. 2 Margin represents percentage of GAAP revenue Ⓒ2022 Amplitude Inc. Confidential. All Rights Reserved. 21

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