X0306 4 2019-12-13 0 0001364099 Innophos Holdings, Inc. IPHS 0001235397 STEITZ JOHN M 259 PROSPECT PLAINS ROAD, BUILDING A CRANBURY NJ 08512 1 0 0 0 Common Stock, par value $0.001 per share 2019-12-13 4 S 0 12625 31.86 D 18103 D The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $31.84 to $31.89. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. /s/ John Steitz 2019-12-16