X0206 3 2021-08-05 0 0001832038 Adagio Therapeutics, Inc. ADGI 0001699610 Mayer Howard C/O ADAGIO THERAPEUTICS, INC. 303 WYMAN STREET, SUITE 300 WALTHAM MA 02451 1 0 0 0 Stock Option (Right to Buy) 4.61 2031-01-12 Common Stock 215150 D One quarter (1/4) of the options shall vest on August 6, 2021, and thereafter, the remainder of the options shall vest in 36 equal monthly installments on the 6th day of each month, subject to the Reporting Person's continuous service on each vesting date. Exhibit List -- Exhibit 24 -- Power of Attorney /s/ Dorothy Vinsky, Attorney-in-Fact 2021-08-05