X0306 4 2022-01-12 0000906553 BOYD GAMING CORP BYD 0001186738 BOYD WILLIAM R 6465 S. RAINBOW BLVD. LAS VEGAS NV 89118 1 1 0 0 Vice President Common Stock 21328 D Common Stock 2106522 I By Trust Common Stock 2022-01-12 5 G 0 E 156 A 41216 I By Trust * Gift received from the William S. Boyd Gaming Properties Trust, William S. Boyd, Trustee, Settlor and Beneficiary. By William R. Boyd Gaming Properties Trust, of which reporting person is Trustee, Settlor and Beneficiary. By William R. Boyd as Trustee of the Sean William Johnson 1997 Education Trust Dated 7/1/97. * 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 R. Boyd 2022-01-14