X0306 4 2020-11-04 0 0001348036 AVALARA, INC. AVLR 0001807571 Tennenbaum Ross 255 SOUTH KING ST. SUITE 1800 SEATTLE WA 98104 0 1 0 0 See Remarks Common Stock 2020-11-04 4 M 0 926 55.10 A 69898 D Common Stock 2020-11-04 4 S 0 426 147.22 D 69472 D Common Stock 2020-11-04 4 S 0 500 148.50 D 68972 D Stock Option (right to buy) 55.10 2020-11-04 4 M 0 926 0.00 D 2029-04-22 Common Stock 926 25926 D The sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 9, 2020. The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $147.13 to $147.47, 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 range. 25% of the total shares subject to the option vested and became exercisable on March 4, 2020, and 1/48th of the total shares subject to the option vest and become exercisable monthly thereafter such that the option is fully vested and exercisable on March 4, 2023. Chief Financial Officer and Treasurer Exhibit 24 - Power of Attorney /s/ Miles Treakle, Attorney-in-Fact 2020-11-05