X0607 3 2026-04-29 0 0001540171 Avalyn Pharma Inc. AVLN 0001853723 SR ONE CAPITAL MANAGEMENT, LLC false 929 MAIN STREET SUITE 200 REDWOOD CITY CA 94063 false false true false 0001595117 George Simeon false 929 MAIN STREET SUITE 200 REDWOOD CITY CA 94063 false false true false Series C-1 Convertible Preferred Stock Common Stock 1419298 I See Note 2 Series D Convertible Preferred Stock Common Stock 489486 I See Note 2 Series C-1 Convertible Preferred Stock Common Stock 354824 I See Note 4 Series D Convertible Preferred Stock Common Stock 489486 I See Note 4 Each share of Series C-1 Convertible Preferred Stock (the "Series C-1 Preferred Stock") is convertible into Common Stock on a one-for-19.2417 basis at any time at the option of the holder, and will automatically convert into the number of shares shown in Column 3 immediately prior to the closing of the Issuer's initial public offering. The Series C-1 Preferred Stock has no expiration date. The reported securities are held directly by SR One Capital Fund II Aggregator, LP ("SR One Fund II Aggregator"). SR One Capital Partners II, LP ("SR One Partners II") is the general partner of SR One Fund II Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") is the general partner of SR One Partners II. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One Partners II, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. Each share of Series D Convertible Preferred Stock (the "Series D Preferred Stock") is convertible into Common Stock on a one-for-19.2417 basis at any time at the option of the holder, and will automatically convert into the number of shares shown in Column 3 immediately prior to the closing of the Issuer's initial public offering. The Series D Preferred Stock has no expiration date. The reported securities are held directly by AMZL, LP ("AMZL"). SR One Capital SMA Partners, LP ("SR One SMA Partners") is the general partner of AMZL, and SR One Capital Management is the general partner of SR One SMA Partners. Simeon George, M.D. is the managing member of SR One Capital Management. Each of SR One SMA Partners, SR One Capital Management and Dr. George may be deemed to have shared power to vote or dispose of these shares, and each disclaims beneficial ownership of the shares except to the extent of any pecuniary interest therein. /s/ Sasha Keough, attorney-in-fact for SR One Capital Management, LLC 2026-04-29 /s/ Sasha Keough, attorney-in-fact for Simeon George 2026-04-29