X0508 4 2024-02-15 0000906553 BOYD GAMING CORP BYD 0000940434 BOYD WILLIAM S 6465 S. RAINBOW BLVD. LAS VEGAS NV 89118 0 0 1 0 0 Common Stock 2024-02-15 4 G 0 616 0 D 9469504 I By Trust Common Stock 2024-02-18 4 F 0 2665 63.37 D 9466839 I By Trust Common Stock 4004000 I By Trust Common Stock 186617 I By Spouse By William S. Boyd Gaming Properties Trust, William S. Boyd, Trustee, Settlor and Beneficiary. On February 15, 2024, the reporting person gifted 616 shares of Common Stock from the William S. Boyd Gaming Properties Trust to the following Trusts in the amounts of 154 shares each: (a) The William Samuel Boyd 1997 Educational Trust; (b) The Josef William Boyd 1997 Educational Trust: (c) The Sean William Johnson 1997 Educational Trust; and (d) The Justin Boyd 1999 Educational Trust. By The WSB SS Irrevocable Trust, of which the reporting person is the settlor and beneficiary. * 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 2024-02-19