X0306 4 2018-07-26 0 0001124140 EXACT SCIENCES CORP EXAS 0001574633 Carey Thomas D. C/O EXACT SCIENCES CORP. 441 CHARMANY DRIVE MADISON WI 53719 1 0 0 0 Common Stock 52410 D Deferred Stock Units 0.00 2018-07-26 4 A 0 3230 0.00 A Common Stock 3230 3230 D Represents deferred stock unit award issued pursuant to the Company's non-employee director compensation policy. Each deferred stock unit represents a contingent right to receive one share of common stock. These deferred stock units vest in full on the first anniversary of the grant date or, if earlier, the date of the next annual meeting of the Company's stockholders. Deferred stock units that become earned and vested are payable upon separation of service. /s/ Thomas D. Carey by Mark R. Busch, attorney-in-fact 2018-07-30