X0306 4 2017-09-08 0 0001637913 Milacron Holdings Corp. MCRN 0001645344 Davis Waters S IV C/O MILACRON HOLDINGS CORP. 10200 ALLIANCE ROAD, SUITE 200 CINCINNATI OH 45242 1 0 0 0 Common Stock, par value $0.01 per share ("Common Stock") 2017-09-08 4 M 0 12000 6.64 A 44935 D Common Stock 2017-09-08 4 S 0 12000 15.7272 D 32935 D Common Stock 2017-09-11 4 M 0 24000 6.64 A 56935 D Common Stock 2017-09-11 4 S 0 12000 15.7498 D 44935 D Common Stock 2017-09-11 4 S 0 12000 15.8545 D 32935 D Common Stock 2017-09-11 4 S 0 12000 15.8318 D 20935 D Stock Option (right to buy) 6.64 2017-09-08 4 M 0 12000 6.64 D 2023-08-07 Common Stock 12000 47953 D Stock Option (right to buy) 6.64 2017-09-11 4 M 0 24000 6.64 D 2023-08-07 Common Stock 24000 23953 D Includes 6,064 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, restricted stock units do not include any voting rights. This transaction was executed in multiple trades at prices ranging from $15.7100 to $15.7900. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. This transaction was executed in multiple trades at prices ranging from $15.7450 to $15.8350. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. This transaction was executed in multiple trades at prices ranging from $15.8300 to $15.9100. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. This transaction was executed in multiple trades at prices ranging from $15.8100 to $15.8700. The price reported above reflects the weighted average purchase price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected. The options vest over five years, at a rate of 20% per year, beginning on the first anniversary of the grant date, August 7, 2013, and immediately vest upon a change of control. The option was granted on 8/7/2013 and this amount was vested in full as of the transaction date. /s/ Hugh O'Donnell, as Attorney-in-Fact for Waters S. Davis IV 2017-09-12