X0306 4 2023-01-19 0 0001501796 Aura Biosciences, Inc. AURA 0001710237 Feder Julie B C/O AURA BIOSCIENCES, INC. 80 GUEST STREET BOSTON MA 01235 0 1 0 0 Chief Financial Officer Common Stock 2023-01-19 4 A 0 48750 0.00 A 72985 D Stock Option (Right to Buy) 10.18 2023-01-19 4 A 0 75000 A 2033-01-18 Common Stock 75000 75000 D These shares were acquired pursuant to a restricted stock unit ("RSU") award under the Issuer's 2021 Stock Option and Incentive Plan. Each RSU represents the right to receive one share of the Issuer's Common Stock. These RSUs vest in four substantially equal annual installments beginning on the one year anniversary of the date of grant. The shares underlying this option vest as follows: 25% of the shares vest on the first anniversary of January 19, 2023 with the remainder vesting thereafter pro-rata in 36 monthly installments. /s/ Julie Feder 2023-01-23