X0306 4 2022-06-23 1 0001724570 DATTO HOLDING CORP. MSP 0001187045 WELLER TIMOTHY 101 MERRITT 7 NORWALK CT 06851 1 1 0 0 Chief Executive Officer Common Stock 2022-06-23 4 D 0 200000 35.50 D 0 D Stock Options 10.00 2022-06-23 4 D 0 875500 25.50 D 2028-07-18 Common Stock 875500 0 D Stock Options 10.47 2022-06-23 4 D 0 500955 25.03 D 2029-03-06 Common Stock 500955 0 D Pursuant to the Agreement and Plan of Merger, dated April 11, 2022, by and among Knockout Parent Inc., Knockout Merger Sub Inc., the Issuer, and, for certain limited purposes set forth in the Merger Agreement, Kaseya Holdings Inc. and Kaseya Inc. (the "Merger Agreement"), each share of Issuer common stock ("Common Stock") was canceled and converted into the right to receive $35.50 per share in cash without interest, subject to required withholding taxes. Pursuant to the Merger Agreement, each option to purchase Issuer common stock (an "Option") that was unexpired, unexercised, outstanding and vested as of immediately prior to June 23, 2022 (the "Effective Time") or that vested in accordance with its terms as a result of the consummation of the Merger and the other transactions contemplated by the Merger Agreement (the "Transactions") (a "Vested Option"), was, at the Effective Time, canceled and converted into the right to receive an amount in cash equal to the product of (i) the number of shares of Common Stock subject to such Vested Option as of immediately prior to the Effective Time and (ii) the excess, if any, of $35.50 over the per share exercise price of such Vested Option. At the Effective Time, these 875,500 Options were canceled in exchange for a cash payment representing the difference between $35.50 and the exercise price of the option per share. At the Effective Time, these 500,955 Options were canceled in exchange for a cash payment representing the difference between $35.50 and the exercise price of the option per share. Pursuant to the Merger Agreement, as of the Effective Time, each restricted stock unit of the Issuer (an "RSU") that is unexpired, unexercised, outstanding and vested as of immediately prior to the Effective Time or that vested in accordance with its terms as a result of the consummation of the Transactions (a "Vested RSU") was canceled and converted into the right to receive an amount in cash equal to the product of (i) $35.50 and (ii) the total number of shares of Common Stock subject to such Vested RSUs as of immediately prior to the Effective Time. At the Effective Time, these 200,000 RSUs were canceled in exchange for a cash payment representing $35.50 for each outstanding RSU. /s/ Adam Collicelli, by Power of Attorney 2022-06-27