X0206 3 2021-06-10 0 0001817713 Janux Therapeutics, Inc. JANX 0001652901 Avalon Ventures XI, L.P. 1134 KLINE STREET LA JOLLA CA 92037 0 0 1 0 0001844550 Avalon BioVentures SPV I, L.P. 1134 KLINE STREET LA JOLLA CA 92037 0 0 1 0 Common Stock 192150 D Series Seed Convertible Preferred Stock Common Stock 1138665 D Series Seed 2 Convertible Preferred Stock Common Stock 2382191 D Series A Convertible Preferred Stock Common Stock 674211 D Series A Convertible Preferred Stock Common Stock 2696843 I See footnote Series B Convertible Preferred Stock Common Stock 1153238 I See footnote The shares are directly held by Avalon Ventures XI, L.P. (Avalon Ventures). Avalon Ventures XI GP LLC (Avalon XI GP) is general partner of Avalon Ventures and may be deemed to have voting and investment power with respect to the shares held by Avalon Ventures. Kevin Kinsella, Richard Levandov, Braden Bohrmann and Jay Lichter, Ph.D. are managing members of Avalon XI GP. Mr. Kinsella, Mr. Levandov, Mr. Bohrmann and Dr. Lichter share voting and investment power with respect to the shares held by Avalon Ventures. Each of such individuals disclaims beneficial ownership of all shares held by Avalon Ventures except to the extent of each such individual's actual pecuniary interest therein, if any. Each share of Series Seed Convertible Preferred Stock, Series Seed 2 Convertible Preferred Stock, Series A Convertible Preferred Stock and Series B Convertible Preferred Stock (collectively, the "Preferred Stock") is convertible into 1.281 shares of Common Stock upon the closing of the Issuer's initial public offering without payment of further consideration. Share numbers give effect to such conversion. The Preferred Stock has no expiration date. The shares are directly held by Avalon BioVentures SPV I, LP (ABV SPV). ABV SPV I GP LLC (ABV GP) is a general partner of ABV SPV and may be deemed to have voting and investment power with respect to the shares held by ABV SPV and as a result may be deemed to have beneficial ownership of such shares. Dr. Lichter and Tighe Reardon share voting and investment power with respect to the shares held by ABV SPV. Each of such individuals disclaims beneficial ownership of all shares held by ABV SPV except to the extent of each such individual's actual pecuniary interest therein, if any. Avalon Ventures XI, L.P. By: Avalon Ventures XI GP, LLC, its general partner, By: /s/ Tighe Reardon, Authorized Signatory 2021-06-10 Avalon BioVentures SPV I, LP By:ABV SPV I GP, LLC, its general partner, By: /s/ Tighe Reardon, Authorized Signatory 2021-06-10