Certain Common Stock of Decibel Therapeutics, Inc. are subject to a Lock-Up Agreement Ending on 11-AUG-2021. These Common Stock will be under lockup for 181 days starting from 11-FEB-2021 to 11-AUG-2021. Details: Executive officers and directors and the holders of substantially all of company's outstanding stock, have agreed that, without the prior written consent of Citigroup Global Markets Inc. and SVB Leerink LLC, on behalf of the underwriters, issuer and they will not, subject to limited exceptions, during the period ending 180 days after the date of this prospectus.