X0306 4/A 2016-04-28 2016-04-29 0001656239 Pinnacle Entertainment, Inc. PNK 0001257587 SANFILIPPO ANTHONY MICHAEL C/O PINNACLE ENTERTAINMENT, INC. 3980 HOWARD HUGHES PARKWAY LAS VEGAS NV 89169 1 1 0 0 Chief Executive Officer Common Stock 2016-04-28 4 A 0 131990 0 A 428954 D Common Stock 2016-04-28 4 A 0 131870 0 A 560824 D The securities reported are restricted stock units that vest in four equal annual installments beginning on April 28, 2017. This amended Form 4 updates the number of shares of common stock beneficially owned directly by the reporting person to reflect an additional 73,954 shares of common stock, which had been omitted in the Form 4 filed on April 29, 2016. The securities reported are restricted stock with performance conditions that vest on December 31, 2018. /s/ Elliot D. Hoops, Attorney-In-Fact for Anthony M. Sanfilippo 2016-05-12