X0306 4 2017-12-15 0001666700 DowDuPont Inc. DWDP 0001269971 LIVERIS ANDREW N C/O THE DOW CHEMICAL COMPANY 2030 DOW CENTER MIDLAND MI 48674 1 Executive Chairman Common Stock 2017-12-15 4 M 0 9664.0000 38.6200 A 659600.0890 D Common Stock 2017-12-15 4 S 0 9664.0000 70.1019 D 649936.0890 D Common Stock 1718.5009 I By 401(k) Plan Common Stock 3668.2024 I By 401(k) Plan ESOP Common Stock 682824.5000 I By Trust Non-Qualified Stock Option (Right to Buy) 38.6200 2017-12-15 4 M 0 9664.0000 38.6200 D 2018-02-15 Common Stock 9664.0000 163999.0000 D The number of shares are aggregated for sales occurring within a $1.00 price range on the same date. Reporting Person agrees to provide upon request by the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price. The price represents the weighted average sale price. All sales occurred at a range of $71.10 to $71.11. Granted under The Dow Chemical Company Amended and Restated 1988 Award and Option Plan. The Plan provides for tax withholding rights. The options vested in three annual installments beginning on February 15, 2009. /s/ Andrew N. Liveris 2017-12-19