X0306 4 2017-04-03 0001364099 Innophos Holdings, Inc. IPHS 0001650347 Simko Mainente Jean Marie 259 PROSPECT PLAINS RD. BLDG A CRANBURY NJ 08512 1 SVP, HR Common Stock 2017-04-03 4 A 0 1428 0 A 4588 D 2017 Option to Purchase 52.51 2017-04-03 4 A 0 4778 0 A 2027-03-31 Common Stock 4778 4778 D On April 3, 2017 these shares of restricted common stock were granted to the reporting person to be held in escrow, subject to certain vesting and forfeiture provisions. The grant vests in three equal installments over a three year period beginning March 31, 2018. The second installment date is March 31, 2019, followed by the third installment due on March 31, 2020. The reporting person was granted options on April 3, 2017. Options vest in 3 equal annual installments beginning March 31, 2018. The second installment date is March 31, 2019, followed by third installment date of March 31, 2020. /s/ Joshua S. Horenstein, as Attorney-In-Fact 2017-04-04