GAAP to Non-GAAP Reconciliations $ in thousands Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 Q1 Q2 Q3 Q4 2018 2018 2018 2018 2019 2019 2019 2019 2020 2020 2020 2020 GAAP gross profit $45,325 $46,233 $56,779 $82,433 $68,020 $72,748 $93,752 $144,239 $95,784 $86,598 $119,303 $149,784 Stock-based compensation 139 206 226 226 307 410 431 486 436 597 714 803 Amortization of intangible assets 446 451 456 456 446 1,096 1,128 1,131 1,118 762 773 1,105 Impairment of intangible assets - - - - - - - - 2,025 - - - Non-GAAP gross profit $45,910 $46,890 $57,461 $83,115 $68,773 $74,254 $95,311 $145,856 $99,363 $87,957 $120,790 $151,692 As margin % Total revenue $50,329 $51,502 $62,589 $89,150 $76,020 $82,043 $103,397 $156,450 $108,831 $96,233 $129,717 $160,527 GAAP gross margin 90% 90% 91% 92% 89% 89% 91% 92% 88% 90% 92% 93% Non-GAAP gross margin 91% 91% 92% 93% 90% 91% 92% 93% 91% 91% 93% 94% Confidential │ ©2021 Alteryx, Inc. 36