X0306 4 2020-10-12 0 0001348036 AVALARA, INC. AVLR 0001741458 McFarlane Scott M 255 SOUTH KING ST. SUITE 1800 SEATTLE WA 98104 1 1 0 0 See Remarks Common Stock 2020-10-12 4 M 0 30000 8.04 A 859223 D Common Stock 2020-10-12 4 S 0 912 148.95 D 858311 D Common Stock 2020-10-12 4 S 0 4516 150.33 D 853795 D Common Stock 2020-10-12 4 S 0 6622 151.26 D 847173 D Common Stock 2020-10-12 4 S 0 15911 152.75 D 831262 D Common Stock 2020-10-12 4 S 0 1039 153.78 D 830223 D Common Stock 2020-10-12 4 S 0 1000 154.65 D 829223 D Common Stock 9375 I By MVPROJECTS, LLC Stock Option (right to buy) 8.04 2020-10-12 4 M 0 30000 0.00 D 2024-02-25 Common Stock 30000 12198 D The sale was effected pursuant to a Rule 10b5-1 trading plan originally adopted by the Reporting Person on December 9, 2019, and amended on August 11, 2020. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $148.715 to $149.68, inclusive. Upon request by the Issuer, any security holder thereof, or the staff of the Securities and Exchange Commission, the Reporting Person will provide full information regarding the number of shares sold at each separate price within the ranges set forth in footnotes (2) through (6) to this Form 4. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $149.85 to $150.845, inclusive. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $150.875 to $151.53, inclusive. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $152.22 to $153.18, inclusive. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $153.41 to $154.27, inclusive. The Reporting Person is a member of MVPROJECTS, LLC. 25% of the total shares subject to the option vested and became exercisable on January 1, 2016, and 1/48th of the total shares subject to the option vested and became exercisable monthly thereafter such that the option was fully vested and exercisable on January 1, 2019. Chairman and Chief Executive Officer /s/ Alesia L. Pinney, Attorney-in-Fact 2020-10-13