X0306 4 2017-07-07 0 0001637913 Milacron Holdings Corp. MCRN 0001645268 Boots Ira G 10200 ALLIANCE ROAD SUITE 200 CINCINNATI OH 45242 1 0 0 0 Common Stock, par value $0.01 per share ("Common Stock") 2017-07-07 4 M 0 33688 6.64 A 33688 I Held by Boots Family Trust #1 Common Stock 2017-07-07 4 S 0 33688 18.25 D 0 I Held by Boots Family Trust #1 Common Stock 38989 D Stock Option (right to buy) 6.64 2017-07-07 4 M 0 33688 6.64 D 2022-04-30 Common Stock 33688 294113 I Held by Boots Family Trust #1 The securities were directly held by the Boots Family Trust #1, of which Mr. Boots is the sole trustee, for the benefit of Mr. Boots' spouse, parents, siblings or lineal descendants, and may be deemed to be held by the Reporting Person. Includes 13,595 restricted stock units that represent the right to receive, at settlement, one share of common stock, which are subject to vesting and forfeiture and which vest on February 27, 2018. Prior to vesting, the restricted stock units do not include any voting rights. The option was granted on 4/30/2012 and this amount was vested in full as of the transaction date. /s/Hugh O'Donnell as Attorney-in-Fact for Ira G. Boots 2017-07-11