X0306 4 2022-02-18 0000906553 BOYD GAMING CORP BYD 0001664330 Thompson Stephen S. 6465 S. RAINBOW BLVD. LAS VEGAS NV 89118 0 1 0 0 Executive Vice President Common Stock 2022-02-18 4 A 0 10733 0 A 63677 D Common Stock 2022-02-18 4 F 0 1967 68.41 D 61710 D Common Stock 47125 I By Trust The Reporting Person was awarded 10,733 Restricted Stock Units for no consideration pursuant to the Issuer's 2020 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 on December 16, 2024. The Restricted Stock Units are subject to the forfeiture and other terms and conditions contained in the award agreement and the 2020 Stock Incentive Plan. Stephen S. and Debra L. Thompson Trust dated December 17, 2015. Uri Clinton, Attorney-in-Fact for Stephen S. Thompson 2022-02-23