X0206 3 2018-10-22 1 0001364099 Innophos Holdings, Inc. IPHS 0001753015 Dunworth William 259 PROSPECT PLAINS ROAD, BUILDING A CRANBURY NJ 08512 0 1 0 0 VP, Corporate Controller & CAO Exhibit 24 (Power of Attorney) attached /s/ William Dunworth 2018-10-22