X0206 3 2021-02-11 0 0001538210 NexImmune, Inc. NEXI 0001488033 Bertram Timothy C/O NEXIMMUNE, INC. 9119 GAITHER ROAD GAITHERSBURG MD 20877 1 0 0 0 Common Stock 6450 D Stock Option (right to buy) 2.42 2027-03-02 Common Stock 12634 D Stock Option (right to buy) 4.31 2029-03-18 Common Stock 23122 D Series A Preferred Stock Common Stock 44965 D Series A2 Preferred Stock Common Stock 10344 D Series A3 Preferred Stock Common Stock 16440 D All shares underlying this option have vested. 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 on March 19, 2022. 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. Exhibit 24.1 - Power of Attorney /s/ Ilse Johnson, Attorney-in-fact 2021-02-11