X0306 4 2019-05-16 0 0001364099 Innophos Holdings, Inc. IPHS 0001578545 Hilk Jane S 259 PROSPECT PLAINS ROAD, BUILDING A CRANBURY NJ 08512 1 0 0 0 Common Stock, par value $0.001 per share 2019-05-16 4 A 0 3126 0.00 A 3126 D The shares represent the directors' annual stock retainer payment. /s/ Joshua S. Horenstein, as Attorney-In-Fact 2019-05-16