X0306 4 2017-12-15 0001666700 DowDuPont Inc. DWDP 0001625045 Collins James C. Jr. CHESTNUT RUN PLAZA 730 974 CENTRE ROAD WILMINGTON DE 19805 0 1 0 0 Chief Operating Officer Common Stock 2017-12-15 4 A 0 768.8137 70.00 A 207496.3838 D Deferred Stock Units 2017-12-15 4 A 0 .023 70.00 A Common Stock .023 2.4257 D Includes direct ownership and unvested restricted stock units; reflects adjustment to total securities reported on Table 1 of previously filed Forms 4 following issuing of 9/29/2017 dividend equivalent units. 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. Erik T. Hoover by Power of Attorney 2017-12-19