X0306 4 2022-02-14 0000906553 BOYD GAMING CORP BYD 0001186742 JOHNSON MARIANNE BOYD 6465 S. RAINBOW BLVD. LAS VEGAS NV 89118 1 1 0 0 Executive Vice President Common Stock 2022-02-14 4 F 0 1619 69.57 D 94322 D Common Stock 39327 I By Trust * Common Stock 39127 I By Trust * Common Stock 25219 I By Trust * Common Stock 90964 I By Trust * Common Stock 3297040 I By Limited Partnership* Common Stock 1100000 I By Limited Liability Company * Common Stock 1988084 I By Trust The Reporting person transferred 2,306 shares of directly held Common Stock into the By the Marianne E. Boyd Johnson Gaming Properties Trust. By Marianne Boyd Johnson as Trustee of the William Samuel Boyd Education Trust Dated 7/1/97. By Marianne Boyd Johnson as Trustee of the Josef William Boyd Education Trust Dated 7/1/97. By Marianne Boyd Johnson as Trustee of the Justin Boyd Education Trust Dated 11/1/99. By the Johnson Children's Trust Dated 6/24/96, Bruno Mark, Trustee. By BG-00 Limited Partnership, of which the Marianne Boyd Gaming Properties Trust, of which the reporting person is the trustee, settlor and beneficiary, is the general partner thereof. Reflects the pro rata distribution of 750,000 shares on June 7, 2021, by the BG-00 Limited Partnership to the beneficiaries thereof. The Marianne Boyd Gaming Properties Trust received 250,000 shares in such distribution. By BG-Sub, LLC of which Marianne Boyd Johnson is the managing member thereof. By the Marianne E. Boyd Johnson Gaming Properties Trust, of which the reporting person is the Trustee, Settlor and Beneficiary, excluding shares held by BG-00 Limited Partnership, which are included in note (6) hereof. Includes 250,000 shares received upon a pro rata distribution from the BG-00 Limited Partnership, as described in footnote (6). * 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 Marianne Boyd Johnson 2022-02-16