X0306 4 2015-12-31 0001616817 Metaldyne Performance Group Inc. MPG 0001269873 AMATO THOMAS A C/O METALDYNE PERFORMANCE GROUP INC. 47659 HALYARD DRIVE PLYMOUTH MI 48170 1 Co-President Common Stock, Par Value $0.001 Per Share 2015-12-31 4 F 0 4584 18.34 D 489677 D Common Stock, Par Value $0.001 Per Share 2015-12-31 4 F 0 51923 18.34 D 437754 D Common Stock, Par Value $0.001 Per Share 2015-12-31 4 F 0 46201 18.34 D 391553 D This transaction relates to the sale of restricted shares to cover the associated tax liability as part of the accelerated vesting of restricted shares due to his departure from the company. /s/ Carol Creel, attorney-in-fact for Mr. Amato 2016-01-04