GAAP to Non-GAAP Reconciliations FYE December 31 | $ in thousands Three months Three months ASC 605 ASC 606 ended Dec 31, ended Dec 31, 1 1 1 1 1 2020 2019 2017 2018 2019 2020 GAAP general & administrative expense $32,241 $48,267 $79,943 $101,439 $30,183 $23,291 Stock-based compensation (4,519) (5,998) (11,878) (25,515) (8,826) (3,667) Follow-on-public offering costs (676) - - - - - Change in fair value of contingent (190) (624) (100) - - (175) consideration Non-GAAP general & administrative $26,856 $41,645 $67,965 $75,924 $21,537 $19,449 expense As margin % Total revenue $131,607 $253,570 $417,910 $495,308 $160,527 $156,450 GAAP general & administrative 24% 19% 19% 20% 19% 15% Non-GAAP general & administrative 20% 16% 16% 15% 13% 12% 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. 41