X0306 4 2019-05-20 1 0001348036 AVALARA, INC. AVLR 0000929408 WARBURG PINCUS & CO. 450 LEXINGTON AVENUE NEW YORK NY 10017 0 0 1 0 0001162870 WARBURG PINCUS LLC 450 LEXINGTON AVENUE NEW YORK NY 10017 0 0 1 0 0001239318 KAYE CHARLES R C/O WARBURG PINCUS LLC 450 LEXINGTON AVENUE NEW YORK NY 10017 0 0 1 0 0001220638 Landy Joseph P. C/O WARBURG PINCUS LLC 450 LEXINGTON AVENUE NEW YORK NY 10017 0 0 1 0 Common Stock 2019-05-20 4 S 0 4400000 69.625 D 4859989 I See Footnotes WP AVLR Holdco LLC ("WP AVLR") is a wholly owned subsidiary of WPXI Finance, LP ("WPXIF") and Warburg Pincus XI Partners, L.P. ("WPXI Partners"). WPXIF is a subsidiary of Warburg Pincus Private Equity XI, L.P. ("WPXI"). WPXI Partners and WPXI are collectively referred to as the "WPXI Funds." WPXI GP, L.P. ("WPXIF GP") is the managing general partner of WPXIF. WPXI is the general partner of WPXIF GP. Warburg Pincus XI, L.P. ("WP XI GP") is the general partner of each of WPXI and WPXI Partners. WP Global LLC ("WP Global") is the general partner of WP XI GP. Warburg Pincus Partners II, L.P. ("WPP II") is the managing member of WP Global. Warburg Pincus Partners GP LLC ("WPP GP LLC") is the general partner of WPP II. Warburg Pincus & Co. ("WP") is the managing member of WPP GP LLC. Warburg Pincus LLC ("WP LLC") is the manager of the WPXI Funds. (Continued from Footnote 1) Charles R. Kaye and Joseph P. Landy are each Managing General Partners of WP and Managing Members and Co-Chief Executive Officers of WP LLC and may be deemed to control the Warburg Pincus entities. Each of WPXIF, WPXI Partners, WPXIF GP, WPXI, WP XI GP, WP Global, WPP II, WPP GP LLC, WP, WP LLC and Messrs. Kaye and Landy disclaim beneficial ownership of all shares held by WP AVLR, except to the extent of its or his pecuniary interest therein, if any. Form 2 of 2. Two reports are filed that relate to the same transactions. See Form 1 of 2 for additional reporting owners. Exhibit 99.1 list of reporting owners and signature page filed herewith. WARBURG PINCUS & Co. by Robert B. Knauss, Partner, /s/ Robert B. Knauss 2019-05-22 See Exhibit 99.1 for signatures of other Reporting Owners 2019-05-22