X0306 4 2018-08-14 0 0001689923 Alteryx, Inc. AYX 0001305473 Insight Holdings Group, LLC C/O INSIGHT VENTURE PARTNERS, 1114 AVENUE OF THE AMERICAS, 36TH FLOOR NEW YORK NY 10036 0 0 1 0 0001574465 Insight Venture Partners (Cayman) VIII, L.P. C/O INSIGHT VENTURE PARTNERS, 1114 AVENUE OF THE AMERICAS, 36TH FLOOR NEW YORK NY 10036 0 0 1 0 0001574477 Insight Venture Partners(Delaware) VIII, L.P. C/O INSIGHT VENTURE PARTNERS, 1114 AVENUE OF THE AMERICAS, 36TH FLOOR NEW YORK NY 10036 0 0 1 0 0001578044 Insight Venture Partners VIII (Co-Investors), L.P. C/O INSIGHT VENTURE PARTNERS, 1114 AVENUE OF THE AMERICAS, 36TH FLOOR NEW YORK NY 10036 0 0 1 0 0001658471 Insight Venture Associates VIII, L.P. C/O INSIGHT VENTURE PARTNERS, 1114 AVENUE OF THE AMERICAS, 36TH FLOOR NEW YORK NY 10036 0 0 1 0 0001658537 Insight Venture Associates VIII, Ltd. C/O INSIGHT VENTURE PARTNERS, 1114 AVENUE OF THE AMERICAS, 36TH FLOOR NEW YORK NY 10036 0 0 1 0 0001574478 Insight Venture Partners VIII, L.P. C/O INSIGHT VENTURE PARTNERS, 1114 AVENUE OF THE AMERICAS, 36TH FLOOR NEW YORK NY 10036 0 0 1 0 Class A Common Stock 2018-08-14 4 S 0 118975 55.00 D 681352 I See Footnotes Class A Common Stock 2018-08-14 4 S 0 30775 55.00 D 176246 I See Footnotes Class A Common Stock 2018-08-14 4 S 0 37736 55.00 D 216103 I See Footnotes Class A Common Stock 2018-08-14 4 S 0 4246 55.00 D 24316 I See Footnotes Class A Common Stock 2018-08-14 4 S 0 41887 55.64 D 639465 I See Footnotes Class A Common Stock 2018-08-14 4 S 0 10835 55.64 D 165411 I See Footnotes Class A Common Stock 2018-08-14 4 S 0 13285 55.64 D 202818 I See Footnotes Class A Common Stock 2018-08-14 4 S 0 1495 55.64 D 22821 I See Footnotes Class A Common Stock 2018-08-15 4 S 0 3119 53.34 D 636346 I See Footnotes Class A Common Stock 2018-08-15 4 S 0 806 53.34 D 164605 I See Footnotes Class A Common Stock 2018-08-15 4 S 0 989 53.34 D 201829 I See Footnotes Class A Common Stock 2018-08-15 4 S 0 111 53.34 D 22710 I See Footnotes Class A Common Stock 2018-08-15 4 S 0 843 54.40 D 635503 I See Footnotes Class A Common Stock 2018-08-15 4 S 0 218 54.40 D 164387 I See Footnotes Class A Common Stock 2018-08-15 4 S 0 267 54.40 D 201562 I See Footnotes Class A Common Stock 2018-08-15 4 S 0 30 54.40 D 22680 I See Footnotes Class A Common Stock 2018-08-15 4 S 0 124 55.11 D 635379 I See Footnotes Class A Common Stock 2018-08-15 4 S 0 32 55.11 D 164355 I See Footnotes Class A Common Stock 2018-08-15 4 S 0 39 55.11 D 201523 I See Footnotes Class A Common Stock 2018-08-15 4 S 0 4 55.11 D 22676 I See Footnotes See Exhibit 99.1 See Exhibit 99.1 See Exhibit 99.1 See Exhibit 99.1 See Exhibit 99.1 See Exhibit 99.1 See Exhibit 99.1 See Exhibit 99.1 See Exhibit 99.1 See Exhibit 99.1 Due to the limitation on the number of rows allowed on a Form 4, Insight Venture Partners Coinvestment Fund III, L.P., Insight Venture Partners Coinvestment Fund (Delaware) III, L.P., Insight Venture Associates Coinvestment III, L.P. and Insight Venture Associates Coinvestment III, Ltd. report on a separate Form 4. Exhibit List: Exhibit 99.1 - Explanation of Responses Exhibit 99.2 - Joint Filers' Names and Addresses Exhibit 99.3 - Joint Filers' Signatures INSIGHT HOLDINGS GROUP, LLC 2018-08-16