X0306 4 2019-02-13 0000906553 BOYD GAMING CORP BYD 0001664330 Thompson Stephen S. 3883 HOWARD HUGHES PARKWAY NINTH FLOOR LAS VEGAS NV 89169 0 1 0 0 Executive Vice President Common Stock 2019-02-13 4 A 0 8374 0 A 69745 D Common Stock 47125 I By Trust The Reporting Person was awarded 8,374 Restricted Stock Units for no consideration pursuant to the Issuer's 2012 Stock Incentive Plan. Each Restricted Stock Unit represents a contingent right to receive one share of Issuer common stock upon vesting. The Restricted Stock Units will vest in full upon the third anniversary of the date of award. The Restricted Stock Units are subject to the forfeiture and other terms and conditions contained in the award agreement and the 2012 Stock Incentive Plan. Stephen S. and Debra L. Thompson Trust dated December 17, 2015. Brian A. Larson, Attorney-in-Fact for Stephen S. Thompson 2019-02-15