X0306 4 2018-08-24 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 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 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 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 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 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 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 Class A Common Stock 2018-08-24 4 S 0 20446 55.99 D 430427 I See Footnotes Class A Common Stock 2018-08-24 4 S 0 5289 55.99 D 111340 I See Footnotes Class A Common Stock 2018-08-24 4 S 0 6485 55.99 D 136517 I See Footnotes Class A Common Stock 2018-08-24 4 S 0 730 55.99 D 15361 I See Footnotes Class A Common Stock 2018-08-24 4 S 0 50802 56.37 D 379625 I See Footnotes Class A Common Stock 2018-08-24 4 S 0 13141 56.37 D 98199 I See Footnotes Class A Common Stock 2018-08-24 4 S 0 16113 56.37 D 120404 I See Footnotes Class A Common Stock 2018-08-24 4 S 0 1813 56.37 D 13548 I See Footnotes Class A Common Stock 2018-08-27 4 S 0 7518 55.96 D 372107 I See Footnotes Class A Common Stock 2018-08-27 4 S 0 1945 55.96 D 96254 I See Footnotes Class A Common Stock 2018-08-27 4 S 0 2385 55.96 D 118019 I See Footnotes Class A Common Stock 2018-08-27 4 S 0 268 55.96 D 13280 I See Footnotes Class A Common Stock 2018-08-27 4 S 0 14017 56.36 D 358090 I See Footnotes Class A Common Stock 2018-08-27 4 S 0 3626 56.36 D 92628 I See Footnotes Class A Common Stock 2018-08-27 4 S 0 4446 56.36 D 113573 I See Footnotes Class A Common Stock 2018-08-27 4 S 0 500 56.36 D 12780 I See Footnotes Class A Common Stock 2018-08-27 4 S 0 128 57.22 D 357962 I See Footnotes Class A Common Stock 2018-08-27 4 S 0 33 57.22 D 92595 I See Footnotes Class A Common Stock 2018-08-27 4 S 0 40 57.22 D 113533 I See Footnotes Class A Common Stock 2018-08-27 4 S 0 5 57.22 D 12775 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 This Form 4 is one of two Forms 4 filed relating to the same event. The Form 4 has been split into two filings because there are more than 10 reporting persons in total, and the SEC's EDGAR filing system limits a single Form 4 to a maximum of 10 reporting person. Each Form 4 is filed by Designated Filer, Insight Holdings Group, LLC. Exhibit List: Exhibit 99.1 - Explanation of Responses Exhibit 99.2 - Joint Filers' Names and Addresses Exhibit 99.3 - Joint Filers' Signatures /s/ Insight Holdings Group, LLC 2018-08-28