X0206 3 2021-02-11 0 0001538210 NexImmune, Inc. NEXI 0001843748 D'Angio Paul C/O NEXIMMUNE, INC. 9119 GAITHER ROAD GAITHERSBURG MD 20877 1 0 0 0 Series A Preferred Stock Common Stock 19627 D Series A2 Preferred Stock Common Stock 4110 D Series A3 Preferred Stock Common Stock 4110 D Stock Option (right to buy) 4.31 2029-03-18 Common Stock 23122 D Stock Option (right to buy) 2.42 2027-03-02 Common Stock 12634 D The shares of preferred stock will automatically convert into the Issuer's common stock in accordance with the Issuer's Restated Certificate of Incorporation, as amended, immediately upon completion of the Issuer's initial public offering. Not applicable. The shares of preferred stock will automatically convert into the Issuer's common stock on a 1-for-1 basis immediately upon completion of the Issuer's initial public offering. This option vests as to 33.33% of the shares on March 19, 2020 with the remainder vesting in equal installments every month thereafter, beginning on March 19, 2020 and ending in March 19, 2022. All shares underlying this option have vested. Exhibit 24.1 /s/ Ilse Johnson, Attorney-in-fact 2021-02-11