Exhibit 99.1 Date: June 14, 2018
Form 3 List of Reporting Owners and Signature Page
Name of designated filer: WARBURG PINCUS & CO.
Other joint filers: Warburg Pincus Private Equity XI, L.P., WPXI Finance, LP,
Warburg Pincus XI Partners, L.P., WPXI GP, L.P., Warburg Pincus XI, L.P., WP
Global LLC, Warburg Pincus Partners II, L.P., Warburg Pincus Partners GP LLC,
Warburg Pincus LLC, Charles R. Kaye, Joseph P. Landy
Address for each joint filer is: c/o Warburg Pincus & Co., 450 Lexington Avenue,
New York, New York 10017
Issuer Name and Ticker or Trading Symbol: Avalara, Inc. (AVLR)
WARBURG PINCUS PRIVATE EQUITY XI, L.P.
BY: WARBURG PINCUS XI, L.P., ITS GENERAL PARTNER
BY: WP GLOBAL LLC, ITS GENERAL PARTNER
BY: WARBURG PINCUS PARTNERS II, L.P., ITS MANAGING
MEMBER
BY: WARBURG PINCUS PARTNERS GP LLC, ITS GENERAL
PARTNER
BY: WARBURG PINCUS & CO., ITS MANAGING MEMBER
/s/ ROBERT B. KNAUSS
---------------------------------
By: Robert B. Knauss
Title: Partner
WPXI FINANCE, LP
BY: WPXI GP, L.P., ITS MANAGING GENERAL PARTNER
BY: WARBURG PINCUS PRIVATE EQUITY XI, L.P., ITS
GENERAL PARTNER
BY: WARBURG PINCUS XI, L.P., ITS GENERAL PARTNER
BY: WP GLOBAL LLC, ITS GENERAL PARTNER
BY: WARBURG PINCUS PARTNERS II, L.P., ITS MANAGING
MEMBER
BY: WARBURG PINCUS PARTNERS GP LLC, ITS GENERAL
PARTNER
BY: WARBURG PINCUS & CO., ITS MANAGING MEMBER
/s/ ROBERT B. KNAUSS
---------------------------------
By: Robert B. Knauss
Title: Partner
WARBURG PINCUS XI PARTNERS, L.P.
BY: WARBURG PINCUS XI, L.P., ITS GENERAL PARTNER
BY: WP GLOBAL LLC, ITS GENERAL PARTNER
BY: WARBURG PINCUS PARTNERS II, L.P., ITS MANAGING
MEMBER
BY: WARBURG PINCUS PARTNERS GP LLC, ITS GENERAL
PARTNER
BY: WARBURG PINCUS & CO., ITS MANAGING MEMBER
/s/ ROBERT B. KNAUSS
---------------------------------
By: Robert B. Knauss
Title: Partner
WPXI GP, L.P.
BY: WARBURG PINCUS PRIVATE EQUITY XI, L.P., ITS
GENERAL PARTNER
BY: WARBURG PINCUS XI, L.P., ITS GENERAL PARTNER
BY: WP GLOBAL LLC, ITS GENERAL PARTNER
BY: WARBURG PINCUS PARTNERS II, L.P., ITS MANAGING
MEMBER
BY: WARBURG PINCUS PARTNERS GP LLC, ITS GENERAL
PARTNER
BY: WARBURG PINCUS & CO., ITS MANAGING MEMBER
/s/ ROBERT B. KNAUSS
---------------------------------
By: Robert B. Knauss
Title: Partner
WARBURG PINCUS XI, L.P.
BY: WP GLOBAL LLC, ITS GENERAL PARTNER
BY: WARBURG PINCUS PARTNERS II, L.P., ITS MANAGING
MEMBER
BY: WARBURG PINCUS PARTNERS GP LLC, ITS GENERAL
PARTNER
BY: WARBURG PINCUS & CO., ITS MANAGING MEMBER
/s/ ROBERT B. KNAUSS
---------------------------------
By: Robert B. Knauss
Title: Partner
WP GLOBAL LLC
BY: WARBURG PINCUS PARTNERS II, L.P., ITS MANAGING
MEMBER
BY: WARBURG PINCUS PARTNERS GP LLC, ITS GENERAL
PARTNER
BY: WARBURG PINCUS & CO., ITS MANAGING MEMBER
/s/ ROBERT B. KNAUSS
---------------------------------
By: Robert B. Knauss
Title: Partner
WARBURG PINCUS PARTNERS II, L.P.
BY: WARBURG PINCUS PARTNERS GP LLC, ITS GENERAL
PARTNER
BY: WARBURG PINCUS & CO., ITS MANAGING MEMBER
/s/ ROBERT B. KNAUSS
---------------------------------
By: Robert B. Knauss
Title: Partner
WARBURG PINCUS PARTNERS GP LLC
BY: WARBURG PINCUS & CO., ITS MANAGING MEMBER
/s/ ROBERT B. KNAUSS
---------------------------------
By: Robert B. Knauss
Title: Partner
WARBURG PINCUS LLC
/s/ ROBERT B. KNAUSS
---------------------------------
By: Robert B. Knauss
Title: Managing Director
CHARLES R. KAYE
/s/ ROBERT B. KNAUSS
---------------------------------
Name: Charles R. Kaye
By: Robert B. Knauss, Attorney-in-Fact
JOSEPH P. LANDY
/s/ ROBERT B. KNAUSS
---------------------------------
Name: Joseph P. Landy
By: Robert B. Knauss, Attorney-in-Fact
