X0306 4 2019-04-01 0001666700 DowDuPont Inc. DWDP 0001223619 BREEN EDWARD D CHESTNUT RUN PLAZA 730 974 CENTRE ROAD WILMINGTON DE 19805 1 1 0 0 CEO & Chairman Common stock 2019-04-01 4 A 0 209388 0 A 713816.2817 D Performance share units not previously reportable vested upon determination by the DowDuPont Compensation Committee on April 1, 2019 that the synergy capture maximum performance criteria had been met (185,498 units) as well as the timely completion of the separation of Dow Inc. from DowDuPont Inc. (23,890 units). Additional performance-based targets remain. Performance share units will be settled in one installment on or about September 1, 2019, subject to continued employment. Includes unvested restricted stock units, deferred stock units and direct ownership. Erik T. Hoover by Power of Attorney 2019-04-03