Amplitude IPO Presentation Deck

GAAP to Non-GAAP Reconciliation ($ in thousands, Fiscal Year Ended December 31) GAAP Revenue GAAP Gross Profit GAAP Gross Margin² Add: Stock-based compensation expense¹ Add: Acquired intangible assets amortization Non-GAAP Gross Profit Non-GAAP Gross Margin² GAAP Research & Development Expense GAAP Research & Development Margin² Less: Stock-based compensation expense¹ Less: Amortization of acquired intangible assets Non-GAAP Research & Development Expense Non-GAAP Research & Development Margin² GAAP Sales & Marketing Expense GAAP Sales & Marketing Margin² Less: Stock-based compensation expense¹ Less: Direct listing expense Non-GAAP Sales & Marketing Expense Non-GAAP Sales & Marketing Margin² GAAP General & Administrative Expense GAAP General & Administrative Margin² Less: Stock-based compensation expense¹ Less: Direct listing expense Non-GAAP General & Administrative Expense Non-GAAP General & Administrative Margin² ¹Stock-based compensation expense-related charges include employer payroll tax-related expenses on employee stock transactions. FY2019 $68,442 $46,337 67.7% 358 $46,695 68.2% FY2020 $102,464 $71,981 70.3% 590 227 $72,798 71.0% $26,098 25.5% (5,609) (518) $19,971 19.5% $51,819 50.6% (6,548) $45,271 44.2% $18,067 17.6% (3,901) $14,166 13.8% Six Months Ended June 30, 2021 $72,364 $49,974 69.1% 483 651 $51,108 70.6% $15,529 21.5% (2,129) $13,400 18.5% $15,529 50.9% (1,709) (13) $35,088 48.5% $13,531 18.7% (1,394) (2,125) $10,012 13.8%

View entire presentation