X0306 4 2017-02-21 0 0001381531 Domtar CORP UFS 0001453133 Williams John David C/O DOMTAR CORPORATION 234 KINGSLEY PARK DRIVE FORT MILL SC 29715 1 1 0 0 President and CEO Common Stock 2017-02-21 4 M 0 6346.69 0.00 A 16372.69 D Common Stock 2017-02-21 4 A 0 4370.306 0.00 A 20742.996 D Common Stock 2017-02-21 4 D 0 0.996 39.81 D 20742 D Common Stock 2017-02-21 4 F 0 5243 39.81 D 15499 D Performance Stock Units 2017-02-21 4 M 0 6346.69 0.00 D 2017-02-21 2017-02-21 Common Stock 6346.69 0 D Performance Stock Units 2017-02-21 4 A 0 8405.97 0.00 A Common Stock 8405.97 22436.47 D Performance Stock Units 2017-02-21 4 A 0 13207.54 0.00 A Common Stock 13207.54 13207.54 D Restricted Stock Units 2017-02-21 4 A 0 26983 0.00 A Common Stock 26983 26983 D Employee Stock Options (Right to buy) 39.81 2017-02-21 4 A 0 50534 0.00 A 2024-02-21 Common Stock 50534 50534 D Each Stock Unit is the economic equivalent of one share of Domtar Corporation Common Stock. Performance Stock Units (PSUs) for which performance goals have been achieved. These PSUs will vest on February 20, 2018, subject to continued service. Performance Stock Units (PSUs) for which performance goals have been achieved. These PSUs will vest on February 19, 2019, subject to continued service. Restricted Stock Units vest on February 21, 2020, subject to continued service. The options vest in approximately equal annual installments on the first three anniversaries of the grant date. Razvan L. Theodoru, Attorney-in-fact for Mr. Williams 2017-02-23