Common use of Treatment of Equity Awards Upon a Change in Control Clause in Contracts

Treatment of Equity Awards Upon a Change in Control. The following provisions shall apply to any award granted under the Adagio Therapeutics, Inc. 2021 Equity Incentive Plan (the “Plan”) or any other plan, agreement or arrangement based on the value of a share of the Company’s common stock on or after the Effective Date (collectively, the “Equity Awards”) to the extent the Equity Awards are assumed, continued or substituted by the surviving or acquiring entity (or its parent) in connection with a Change in Control (as defined in the Plan) and the Executive continues to provide services to the Company or its successor following such Change in Control: (i) Except as otherwise provided in the Change in Control transaction’s definitive agreement, the Plan or the applicable award agreement, or as set forth in Section 6 below, Equity Awards subject to vesting solely on account of completing periods of covered employment or service (collectively, the “Time-Based Equity Awards”) shall not immediately accelerate and become fully vested and exercisable or non-forfeitable on such a Change in Control, and

Treatment of Equity Awards Upon a Change in Control. The following provisions shall apply to any award granted under the Adagio Therapeutics, Inc. 2021 Equity Incentive Plan (the “Plan”) or any other plan, agreement or arrangement based on the value of a share of the Company’s common stock on or after the Effective Date (collectively, the “Equity Awards”) to the extent the Equity Awards are assumed, continued or substituted by the surviving or acquiring entity (or its parent) in connection with a Change in Control (as defined in the Plan) and the Executive continues to provide services to the Company or its successor following such Change in Control: (i) Except as otherwise provided in the Change in Control transaction’s definitive agreement, the Plan or the applicable award agreement, or as set forth in Section 6 below, Equity Awards subject to vesting solely on account of completing periods of covered employment or service (collectively, the “Time-Based Equity Awards”) shall not immediately accelerate and become fully vested and exercisable or non-forfeitable on such a Change in Control, andand DM_US 180923310-7.115049.0011 254193915 v3

Treatment of Equity Awards Upon a Change in Control. The following provisions shall apply to any award granted under the Adagio Therapeutics, Inc. 2021 Equity Incentive Plan (the “Plan”) or any other plan, agreement or arrangement based on the value of a share of the Company’s common stock on or after the Effective Date (collectively, the “Equity Awards”) to the extent the Equity Awards are assumed, continued or substituted by the surviving or acquiring entity (or its parent) in connection with a Change in Control (as defined in the Plan) and the Executive continues to provide services to the Company or its successor following such Change in Control: (i) Except as otherwise provided in the Change in Control transaction’s definitive agreement, the Plan or the applicable award agreement, or as set forth in Section 6 below, Equity Awards subject to vesting solely on account of completing periods of covered employment or service (collectively, the “Time-Based Equity Awards”) shall not immediately accelerate and become fully vested and exercisable or non-forfeitable on such a Change in Control, andand 254046936 v5