X0306 4 2022-01-18 0000906553 BOYD GAMING CORP BYD 0000940434 BOYD WILLIAM S 6465 S. RAINBOW BLVD. LAS VEGAS NV 89118 1 1 1 0 Co-Executive Chair Common Stock 2022-01-18 5 G 0 E 33500 D 19338246 I By Trust Common Stock 186617 I By Spouse * On January 18, 2022, the reporting person gifted 33,500 shares of Common Stock from the William S. Boyd Gaming Properties Trust to Judy Boyd, Trustee of the Judy Boyd Living Trust dated March 16, 2017. * The reporting person expressly disclaims beneficial ownership of any securities of the Issuer except for those securities that are owned directly by the Reporting Person or to the extent of the Reporting Person's pecuniary interest in a trust or other entity which owns such securities. Uri Clinton, Attorney-in-Fact for William S. Boyd 2022-01-21