GAAP to Non-GAAP Reconciliations FYE December 31 | $ in thousands ASC 606 ASC 605 1 1 1 2017 2018 2019 2020 GAAP income (loss) from operations $(18,199) $29,770 $37,981 $(3,907) Stock-based compensation 8,941 16,647 33,125 74,916 Amortization of intangible assets 1,225 2,030 4,022 3,970 Follow-on public offering costs 676 - - - Change in fair value of contingent consideration 190 624 100 - Impairment of intangible assets 2,025 Non-GAAP income(loss) from operations $(7,167) $49,071 $75,228 $77,004 As margin % Total revenue $131,607 $253,570 $417,910 $495,308 GAAP operating margin (14%) 12% 9% (1%) Non-GAAP operating margin (5%) 19% 18% 16% 1 Alteryx adopted the new revenue recognition accounting standard Accounting Standards Codification (“ASC”) 606 effective January 1, 2018 on a modified retrospective basis. Financial results for the 2018 and 2019 reporting periods are presented in accordance with the new revenue recognition standard. Historical financial results for the reporting periods prior to 2018 are presented in conformity with amounts previously disclosed under the prior revenue recognition standard ASC 605. Confidential │ ©2021 Alteryx, Inc. 37