X0607 3 2026-04-29 0 0001540171 Avalyn Pharma Inc. AVLN 0001598542 Carroll Jill false 929 MAIN STREET SUITE 200 REDWOOD CITY CA 94063 true false false 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 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 securities are directly held by SR One Capital Fund II Aggregator, LP ("SR One Fund II Aggregator"). SR One Capital Partners II, LP ("SR One Partners II") serves as the general partner of SR One Fund II Aggregator, and SR One Capital Management, LLC ("SR One Capital Management") serves as the general partner of SR One Partners II. The Reporting Person is a partner of SR One Capital Management, LP, an entity affiliated with SR One Fund II Aggregator, and a limited partner of SR One Partners II. The Reporting Person disclaims beneficial ownership of these securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended ("Section 16"), except to the extent of her pecuniary interest therein, if any, and this report shall not be deemed an admission that the Reporting Person is the beneficial owner of such securities for Section 16 or any other purpose. 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. /s/ Sasha Keough, attorney-in-fact for Jill Carroll 2026-04-29