X0306 4 2020-06-30 0 0001722271 Akouos, Inc. AKUS 0001694560 New Enterprise Associates 16, L.P. 1954 GREENSPRING DRIVE SUITE 600 TIMONIUM MD 21093 0 0 1 0 0001712881 NEA Partners 16, L.P. 1954 GREENSPRING DRIVE SUITE 600 TIMONIUM MD 21093 0 0 1 0 0001712882 NEA 16 GP, LLC 1954 GREENSPRING DRIVE SUITE 600 TIMONIUM MD 21093 0 0 1 0 Common Stock 2020-06-30 4 C 0 513758 A 513758 D Common Stock 2020-06-30 4 C 0 1992238 A 2505996 D Common Stock 2020-06-30 4 C 0 1199976 A 3705972 D Common Stock 2020-06-30 4 P 0 588235 17.00 A 4294207 D Series Seed Preferred Stock 2020-06-30 4 C 0 513758 0.00 D Common Stock 513758 0 D Series A Preferred Stock 2020-06-30 4 C 0 1992238 0.00 D Common Stock 1992238 0 D Series B Preferred Stock 2020-06-30 4 C 0 1199976 0.00 D Common Stock 1199976 0 D On June 30, 2020, the Series Seed Preferred Stock converted into Common Stock on a 21.073-for-1 basis upon the closing of the Issuer's initial public offering without payment of consideration. The Series Seed Preferred Stock was convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The shares had no expiration date. The shares are directly held by New Enterprise Associates 16, L.P. ("NEA 16"), and indirectly held by NEA Partners 16, L.P. ("NEA Partners 16"), the sole general partner of NEA 16, NEA 16 GP, LLC ("NEA 16 GP"), the sole general partner of NEA Partners 16, and the individual managers of NEA 16 GP (NEA Partners 16, NEA 16 GP and the individual managers of NEA 16 GP, together, the "Indirect Reporting Persons"). The individual managers of NEA 16 GP are Forest Baskett, Ali Behbahani, Carmen Chang, Anthony A. Florence, Jr., Mohamad Makhzoumi, Josh Makower, Scott D. Sandell, Peter W. Sonsini and Paul Walker. The Indirect Reporting Persons disclaim beneficial ownership within the meaning of Section 16 of the Securities Exchange Act of 1934, as amended, or otherwise of such portion of the NEA 16 shares in which the Indirect Reporting Persons have no pecuniary interest. On June 30, 2020, the Series A Preferred Stock converted into Common Stock on a 21.073-for-1 basis upon the closing of the Issuer's initial public offering without payment of consideration. The Series A Preferred Stock was convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The shares had no expiration date. On June 30, 2020, the Series B Preferred Stock converted into Common Stock on a 21.073-for-1 basis upon the closing of the Issuer's initial public offering without payment of consideration. The Series B Preferred Stock was convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The shares had no expiration date. /s/ Sasha Keough, attorney-in-fact 2020-07-01