X0206 3 2017-09-01 0 0001666700 DowDuPont Inc. DWDP 0001223619 BREEN EDWARD D 974 CENTRE ROAD CRP 730 WILMINGTON DE 19805 1 1 0 0 Chief Executive Officer Common Stock 316012 D Common Stock 19422 I GRAT Employee Stock Options (Right to Buy) 51.57 2016-11-06 2022-11-05 Common Stock 512800 D Employee Stock Options (Right to Buy) 59.42 2018-02-02 2027-02-01 Common Stock 341867 D Includes direct ownership and time-vested restricted stock units. Also includes time-vested restricted stock units converted from performance share units not previously reportable on Tables I or II. Options vest in three equal annual installments beginning on November 6, 2016. Option shares may be used to satisfy withholding taxes. Options vest in three equal annual installments beginning on February 2, 2018. Option shares may be used to satisfy withholding taxes. Erik T. Hoover by Power of Attorney 2017-09-11