X0306 4 2022-06-17 0 0001656536 Decibel Therapeutics, Inc. DBTX 0001731164 FINGER ALISON CECILY C/O DECIBEL THERAPEUTICS, INC. 1325 BOYLSTON STREET, SUITE 500 BOSTON MA 02215 1 0 0 0 Stock Option (right to buy) 2.30 2022-06-17 4 A 0 10000 0.00 A 2032-06-16 Common Stock 10000 10000 D The option was granted on June 17, 2022 for 10,000 shares. The shares underlying the option are scheduled to vest in full on the one year anniversary of the date of grant of the option (or, if earlier, the date of the next annual meeting of stockholders following the date of grant of the option), subject to the reporting person's continued service. /s/ Elisabeth Leiderman, Attorney-in-Fact 2022-06-21