X0306 4 2022-08-12 0 0001435049 CHINOOK THERAPEUTICS, INC. KDNY 0001745958 Jerel Davis C/O CHINOOK THERAPEUTICS, INC. 1600 FAIRVIEW AVE. E., SUITE 100 SEATTLE WA 98102 1 0 0 0 Common Stock 2022-08-12 4 J 0 364587 0.00 D 1498610 I See Footnote Common Stock 2022-08-12 4 J 0 3600 0.00 A 3600 I See Footnote Common Stock 2022-08-12 4 J 0 108715 0.00 D 443434 I See Footnote Common Stock 2022-08-12 4 J 0 5866 0.00 A 9466 I See Footnote Common Stock 2022-08-12 4 J 0 9466 0.00 D 0 I See Footnote Common Stock 2022-08-12 4 J 0 1646 0.00 A 734584 D Common Stock 2913070 I See Footnote Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Versant Voyageurs I, L.P. ("Versant Voyageurs I") to its partners. These securities are held of record by Versant Voyageurs I. Versant Voyageurs I GP Company is the general partner of Versant Voyageurs I. The Reporting Person, 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 the Reporting Person disclaims beneficial ownership of the shares held by Versant Voyageurs I, except to the extent of their respective pecuniary interests therein. Represents a change in the form of ownership of Versant Voyageurs I GP, L.P. ("Versant Voyageurs I GP") by virtue of the receipt of shares as a result of the pro-rata in-kind distribution of common stock of the Issuer for no consideration by Versant Voyageurs I. Shares held by Versant Voyageurs I GP. The Reporting Person, a member of the Issuer's board of directors, is a partner of Versant Voyageurs I GP and may be deemed to share voting and dispositive power over the shares held by Versant Voyageurs I GP; however, he disclaims beneficial ownership of such securities, except to the extent of his pecuniary interests therein. Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Versant Voyageurs I Parallel, L.P. ("Versant I Parallel") to its partners. These securities are held of record by Versant I Parallel. 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. The Reporting Person, 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 the Reporting Person disclaims beneficial ownership of the shares held by Versant I Parallel, except to the extent of their respective pecuniary interests therein. Represents a change in the form of ownership of Versant Voyageurs I GP by virtue of the receipt of shares in the pro-rata in-kind distribution of common stock of the Issuer for no consideration by Versant I Parallel. Represents a pro-rata distribution, and not a purchase or sale, without additional consideration by Versant Voyageurs I GP, to its partners. Represents a change in the form of ownership of the Reporting Person as a result of the pro-rata in-kind distribution of common stock of the Issuer for no consideration by Versant Voyageurs I. 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. The Reporting Person, 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 Ventures VII GP-GP, Versant Ventures VII GP and the Reporting Person disclaims beneficial ownership of the shares held by Versant VII, except to the extent of their respective pecuniary interests therein. /s/ Robin L. Praeger, Attorney-in-Fact 2022-08-16