X0306 4 2018-09-06 0 0001592016 AgroFresh Solutions, Inc. AGFS 0001666700 DowDuPont Inc. 2211 H.H. DOW WAY MIDLAND MI 48674 0 0 1 0 0000029915 DOW CHEMICAL CO /DE/ 2211 H.H. DOW WAY MIDLAND MI 48642 0 0 1 0 Common Stock, par value $0.0001 per share 2018-09-06 4 P 0 39833 6.315 A 19218993 I Through wholly-owned subsidiary Common Stock, par value $0.0001 per share 2018-09-07 4 P 0 39833 6.25 A 19258826 I Through wholly-owned subsidiary Purchases pursuant to a 10b5-1 plan. 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 purchased or sold at each separate price. Weighted average purchase price. All trades occurred at a range of prices from $6.22 to $6.41. Weighted average purchase price. All trades occurred at a range of prices from $6.10 to $6.35. Exhibit 99.1 Joint Filer Information, incorporated herein by reference. DOWDUPONT INC., /s/ Amy E. Wilson, Authorized Officer 2018-09-10 THE DOW CHEMICAL COMPANY, /s/ Amy E. Wilson, Authorized Officer 2018-09-10