X0306 4 2021-08-27 0 0001435049 CHINOOK THERAPEUTICS, INC. KDNY 0001750266 Versant Venture Capital VII, L.P. ONE SANSOME STREET SUITE 3630 SAN FRANCISCO CA 94104 0 0 1 0 0001745960 Versant Voyageurs I, L.P. ONE SANSOME STREET SUITE 3630 SAN FRANCISCO CA 94104 0 0 1 0 0001745961 Versant Voyageurs I Parallel, L.P. ONE SANSOME STREET SUITE 3630 SAN FRANCISCO CA 94104 0 0 1 0 Common Stock 2021-08-27 4 S 0 510000 14.00 D 4223023 D Common Stock 2021-08-27 4 S 0 261902 14.00 D 2171197 I See Footnote Common Stock 2021-08-27 4 S 0 78098 14.00 D 644149 I See Footnote These securities are held of record by Versant Venture Capital VII, L.P. ("Versant VII"). Versant Ventures VII GP, L.P. ("Versant Ventures VII GP") is the general partner of Versant VII, and Versant Ventures VII GP-GP, LLC ("Versant Ventures VII GP-GP") is the general partner of Versant Ventures VII GP. Jerel C. Davis, a member of the Issuer's board of directors, is a managing director of Versant Ventures VII GP-GP and may be deemed to share voting and dispositive power over the shares held by Versant VII. Each of Versant VII GP-GP, Versant VII GP and Jerel C. Davis disclaims beneficial ownership of the shares held by Versant VII, except to the extent of their respective pecuniary interests therein. Jerel C. Davis is a director of the Issuer and, accordingly, files separate Section 16 reports. These securities are held of record by Versant Voyageurs I, L.P. ("Versant Voyageurs I"). Versant Voyageurs I GP Company is the general partner of Versant Voyageurs I. Jerel C. Davis, a member of the Issuer's board of directors, is a director of Versant Voyageurs I GP Company and may be deemed to share voting and dispositive power over the shares held by Versant Voyageurs I. Each of Versant Voyageurs I GP Company and Jerel C. Davis disclaims beneficial ownership of the shares held by Versant Voyageurs I, except to the extent of their respective pecuniary interests therein. Jerel C. Davis is a director of the Issuer and, accordingly, files separate Section 16 reports. These securities are held of record by Versant Voyageurs I Parallel L.P. ("Versant I Parallel"). Versant Voyageurs I GP, L.P. ("Versant Voyageurs I GP") is the general partner of Versant I Parallel. Versant Ventures VI GP, L.P. ("Versant Ventures VI GP") is the general partner of Versant Voyageurs I GP. Versant Ventures VI GP-GP, LLC ("Versant Ventures VI GP-GP") is the general partner of Versant Ventures VI GP. Jerel C. Davis, a member of the Issuer's board of directors, is a managing director of Versant Ventures VI GP-GP and may be deemed to share voting and dispositive power over the shares held by Versant I Parallel. Each of Versant Ventures VI GP-GP, Versant Ventures VI GP, Versant Voyageurs I GP and Jerel C. Davis disclaims beneficial ownership of the shares held by Versant I Parallel, except to the extent of their respective pecuniary interests therein. Jerel C. Davis is a director of the Issuer and, accordingly, files separate Section 16 reports. /s/ Robin L. Praeger, Managing Director of Versant Ventures VII GP-GP, LLC, general partner of Versant Ventures VII GP, L.P., general partner of Versant Venture Capital VII, L.P. 2021-08-31 /s/ Robin L. Praeger, President of Versant Voyageurs I GP Company, general partner of Versant Voyageurs I, L.P. 2021-08-31 /s/ Robin L. Praeger, Managing Director of Versant Ventures VI GP-GP LLC, general partner of Versant Ventures VI GP, L.P., general partner of Versant Voyageurs I GP, L.P., general partner of Versant Voyageurs I Parallel, L.P. 2021-08-31