X0306 4 2021-11-02 0 0001501796 Aura Biosciences, Inc. AURA 0001808098 Johnson David Michael C/O AURA BIOSCIENCES, INC. 85 BOLTON STREET CAMBRIDGE MA 02140 1 0 0 0 Common Stock 2021-11-02 4 C 0 139672 0.00 A 139672 I By Velocity Capital Management Series E Convertible Preferred Stock 2021-11-02 4 C 0 139672 D Common Stock 139672 0 I By Velocity Capital Management LLC The Series E Preferred Stock converted into the number of shares of Common Stock of the Issuer upon the closing of the Issuer's Initial Public Offering. These amounts reflect a 1-for-13.700 reverse split which became effective on October 22, 2021. Velosity Capital Management LLC is an entity that the reporting person is the sole member of. /s/ Julie Feder, as Attorney-in-Fact 2021-11-02