X0306 4 2017-09-29 0001666700 DowDuPont Inc. DWDP 0001223619 BREEN EDWARD D CHESTNUT RUN PLAZA 730 974 CENTRE ROAD WILMINGTON DE 19805 1 1 0 0 Chief Executive Officer Common Stock 2017-09-29 4 A 0 1468.5129 69.23 A 316747.7875 D Common Stock 19422 I GRAT Deferred Stock Units 2017-09-29 4 A 0 3.1374 69.23 A Common Stock 3.1374 735.9712 D Includes unvested RSUs, deferred stock units and direct ownership Each unit represents the right to receive one share of DowDuPont common stock. Units are payable in shares following termination of the reporting person's employment with DowDuPont. The reporting person may transfer his units into an alternative investment account at any time. Erik T. Hoover by Power of Attorney 2017-10-03