BOYD WILLIAM S

SEC source: 0001421390-21-000013 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 19,365,569

F1 · shares: The Reporting Person was awarded 14,508 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 upon the third anniversary of the date of award. 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.

F1 · price: The Reporting Person was awarded 14,508 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 upon the third anniversary of the date of award. 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.

F3 · ownership.nature: By William S. Boyd Gaming Properties Trust, of which reporting person is the trustee, settlor and beneficiary.

SEC source: 0001421390-21-000010 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 19,351,061

F1 · price: On January 14, 2021, the reporting person gifted 1,040 shares of Common Stock (the "Shares") from William S. Boyd Gaming Properties Trust ("WSBGPT") to the education trusts of the following grandchildren in the amounts specified in brackets: The Taylor Joseph Boyd Education Trust Dated 7/1/97 (208 shares); The William Samuel Boyd Education Trust Dated 7/1/97 (208 shares),; The Josef William Boyd Education Trust Dated 7/1/97 (208 shares); The Justin Boyd Education Trust Dated 11/1/99 (208 shares); and Sean William Johnson Education Trust Dated 7/1/97 (208 shares).

SEC source: 0001421390-21-000002 · edgar.xml · derivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,793

Underlying: Common Stock · 3,793 shares

Expires not disclosed

F1 · derivative.exercise_price: The Career Restricted Stock Units were granted to the Reporting Person for no consideration pursuant to the Issuer's Career Shares Program under its 2020 Stock Incentive Plan. Each Career Restricted Stock Unit represents a contingent right to receive one share of Issuer common stock.

F2 · derivative.exercise_date: The Career Restricted Stock Units will be paid out in shares of Issuer common stock at the time of retirement based upon the Reporting Person's/grantee's attained age and years of continuous service at the time of retirement. To receive any payout under the Career Shares Program, grantees must be at least 55 years old and must have been continually employed by the Issuer for a minimum of 10 years. Retirement after 10 years of service will entitle a grantee to 50 percent of his or her Career Restricted Stock Units. This increases to 75 percent after 15 years and 100 percent following 20 years of employment. In the event of grantee's death or permanent disability, or following a change in control of Issuer, the grantee will be deemed to have attained age 55 and the Career Restricted Stock Units will immediately vest and convert into shares of Issuer common stock based on the grantee's years of continuous service through the date of death, termination resulting from permanent disability or the change in control, as applicable.

F2 · derivative.expiration_date: The Career Restricted Stock Units will be paid out in shares of Issuer common stock at the time of retirement based upon the Reporting Person's/grantee's attained age and years of continuous service at the time of retirement. To receive any payout under the Career Shares Program, grantees must be at least 55 years old and must have been continually employed by the Issuer for a minimum of 10 years. Retirement after 10 years of service will entitle a grantee to 50 percent of his or her Career Restricted Stock Units. This increases to 75 percent after 15 years and 100 percent following 20 years of employment. In the event of grantee's death or permanent disability, or following a change in control of Issuer, the grantee will be deemed to have attained age 55 and the Career Restricted Stock Units will immediately vest and convert into shares of Issuer common stock based on the grantee's years of continuous service through the date of death, termination resulting from permanent disability or the change in control, as applicable.

SEC source: 0001421390-20-000038 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 19,352,101

F1 · price: On December 14, 2020, the reporting person gifted 50,000 shares of Common Stock from William S. Boyd Gaming Properties Trust ("WSBGPT") to The Boyd Foundation.

F1 · balance_after: On December 14, 2020, the reporting person gifted 50,000 shares of Common Stock from William S. Boyd Gaming Properties Trust ("WSBGPT") to The Boyd Foundation.

SEC source: 0001421390-20-000017 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 19,402,101

F1 · ownership.nature: By William S. Boyd Gaming Properties Trust, of which reporting person is the trustee, settlor and beneficiary.

SEC source: 0001421390-20-000009 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 19,302,101

F1 · shares: Represents shares underlying Performance Share Units that vested on February 27, 2020.

F2 · ownership.nature: By William S. Boyd Gaming Properties Trust, of which reporting person is the trustee, settlor and beneficiary.

SEC source: 0001421390-20-000005 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 19,270,258

F1 · price: On January 14, 2020, the reporting person gifted 1,680 shares of Common Stock (the "Shares") from William S. Boyd Gaming Properties Trust ("WSBGPT") to the education trusts of the following grandchildren in the amounts specified in brackets: The Taylor Joseph Boyd Education Trust Dated 7/1/97 (336 shares); The William Samuel Boyd Education Trust Dated 7/1/97 (336 shares),; The Josef William Boyd Education Trust Dated 7/1/97 (336 shares); The Justin Boyd Education Trust Dated 11/1/99 (336 shares); and Sean William Johnson Education Trust Dated 7/1/97 (336 shares).

SEC source: 0001209191-20-002035 · doc4.xml · derivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,316

Underlying: Common Stock · 5,316 shares

Expires not disclosed

F1 · derivative.exercise_price: The Career Restricted Stock Units were granted to the Reporting Person for no consideration pursuant to the Issuer's Career Shares Program under its 2012 Stock Incentive Plan. Each Career Restricted Stock Unit represents a contingent right to receive one share of lssuer common stock.

F2 · derivative.exercise_date: The Career Restricted Stock Units will be paid out in shares of lssuer common stock at the time of retirement based upon the grantee's attained age and years of continuous service at retirement. To receive any payout, grantees must be at least 55 years old and must have been continually employed by the Issuer for a minimum of 10 years. Retirement after 10 years of service will entitle a grantee to 50 percent of his or her Career Restricted Stock Units. This increases to 75 percent after 15 years and 100 percent following 20 years of employment. In the event of death or permanent disability, or following a change in control of lssuer, the grantee will be deemed to have attained age 55 and the Career Restricted Stock Units will immediately vest and convert into shares of lssuer common stock based on the grantee's years of continuous service through the date of death, termination resulting from permanent disability or the change in control.

F2 · derivative.expiration_date: The Career Restricted Stock Units will be paid out in shares of lssuer common stock at the time of retirement based upon the grantee's attained age and years of continuous service at retirement. To receive any payout, grantees must be at least 55 years old and must have been continually employed by the Issuer for a minimum of 10 years. Retirement after 10 years of service will entitle a grantee to 50 percent of his or her Career Restricted Stock Units. This increases to 75 percent after 15 years and 100 percent following 20 years of employment. In the event of death or permanent disability, or following a change in control of lssuer, the grantee will be deemed to have attained age 55 and the Career Restricted Stock Units will immediately vest and convert into shares of lssuer common stock based on the grantee's years of continuous service through the date of death, termination resulting from permanent disability or the change in control.

SEC source: 0001421390-20-000003 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 19,271,938

F1 · price: On December 23, 2019, the reporting person gifted 50,000 shares of Common Stock from William S. Boyd Gaming Properties Trust ("WSBGPT") to The Boyd Foundation.

SEC source: 0001186747-19-000058 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 19,321,938

F1 · price: * The Reporting Person was awarded 19,500 Restricted Stock Units for no consideration pursuant to the Issuer's 2012 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 upon the third anniversary of the date of award. The Restricted Stock Units are subject to the forfeiture and other terms and conditions contained in the award agreement and the 2012 Stock Incentive Plan.

F2 · ownership.nature: By William S. Boyd Gaming Properties Trust, of which reporting person is the trustee, settlor and beneficiary.

SEC source: 0001186747-19-000057 · edgar.xml · derivative · entry 3

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 23,924 shares

Expires 2026-11-08

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: Options granted under Boyd Gaming Corporation 2012 Flexible Stock Option Plan. Vesting plan calls for options to become exercisable at the rate of 33.333% per year on the first day of each successive 12 month period commencing one year from grant date.

SEC source: 0001186747-19-000057 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust*

Disclosed balance after: 19,302,438

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · ownership.nature: By William S. Boyd Gaming Properties Trust ("WSBGPT") of which reporting person is the trustee, settlor and beneficiary.

SEC source: 0001186747-19-000047 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 19,278,514

F1 · price: On September 30, 2019, the reporting person gifted 100,000 shares of Common Stock from William S. Boyd Gaming Properties Trust ("WSBGPT") to The Boyd Foundation.

SEC source: 0001212545-19-000099 · wf-form4_156115048719573.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director Emeritus

10b5-1 filing: Not disclosed

Ownership: Indirect · The Judy Boyd Living Trust dated March 16, 2017

Disclosed balance after: 2,500

SEC source: 0001186747-19-000035 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 19,298,073

F1 · price: On March 29, 2019, the reporting person gifted 50,000 shares of Common Stock from William S. Boyd Gaming Properties Trust ("WSBGPT") to The Boyd Foundation.

SEC source: 0001186747-19-000036 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 19,378,514

F1 · price: On March 29, 2019, the reporting person gifted 50,000 shares of Common Stock from William S. Boyd Gaming Properties Trust ("WSBGPT") to The Boyd Foundation.

F2 · balance_after: Amended to correct the number of shares held directly by the reporting person on January 2, 2019.

SEC source: 0001186747-19-000032 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 19,348,073

F1 · shares: Represents shares underlying Performance Share Units that vested on March 1, 2019.

F2 · ownership.nature: By William S. Boyd Gaming Properties Trust, of which reporting person is the trustee, settlor and beneficiary.

SEC source: 0001186747-19-000017 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 19,307,588

F1 · shares: The Reporting Person was awarded 18,911 Restricted Stock Units for no consideration pursuant to the Issuer's 2012 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 upon the third anniversary of the date of award. The Restricted Stock Units are subject to the forfeiture and other terms and conditions contained in the award agreement and the 2012 Stock Incentive Plan.

F1 · price: The Reporting Person was awarded 18,911 Restricted Stock Units for no consideration pursuant to the Issuer's 2012 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 upon the third anniversary of the date of award. The Restricted Stock Units are subject to the forfeiture and other terms and conditions contained in the award agreement and the 2012 Stock Incentive Plan.

F2 · ownership.nature: By William S. Boyd Gaming Properties Trust, of which reporting person is the trustee, settlor and beneficiary.

SEC source: 0001212545-19-000020 · wf-form4_154957355424376.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,000

F1 · balance_after: On July 18, 2018, the Reporting Person transferred 3,750 shares to the William S. Boyd Trust.

SEC source: 0001186747-19-000003 · edgar.xml · derivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,511

Underlying: Common Stock · 7,511 shares

Expires not disclosed

F1 · derivative.exercise_price: The Career Restricted Stock Units were granted to the Reporting Person for no consideration pursuant to the Issuer's Career Shares Program under its 2012 Stock Incentive Plan. Each Career Restricted Stock Unit represents a contingent right to receive one share of Issuer common stock.

F2 · derivative.exercise_date: The Career Restricted Stock Units will be paid out in shares of Issuer common stock at the time of retirement based upon the Reporting Person's/grantee's attained age and years of continuous service at the time of retirement. To receive any payout under the Career Shares Program, grantees must be at least years 55 years old and must have been continually employed by the Issuer for a minimum of 10 years. Retirement after 10 years of service will entitle a grantee to 50 percent of his or her Career Restricted Stock Units. This increases to 75 percent after 15 years and 100 percent following 20 years of employment. In the event of grantee's death or permanent disability, or following a change in control of Issuer, the grantee will be deemed to have attained age 55 and the Career Restricted Stock Units will immediately vest and convert into shares of Issuer common stock based on the grantee's years of continuous service through the date of death, termination resulting from permanent disability or the change in control, as applicable.

F2 · derivative.expiration_date: The Career Restricted Stock Units will be paid out in shares of Issuer common stock at the time of retirement based upon the Reporting Person's/grantee's attained age and years of continuous service at the time of retirement. To receive any payout under the Career Shares Program, grantees must be at least years 55 years old and must have been continually employed by the Issuer for a minimum of 10 years. Retirement after 10 years of service will entitle a grantee to 50 percent of his or her Career Restricted Stock Units. This increases to 75 percent after 15 years and 100 percent following 20 years of employment. In the event of grantee's death or permanent disability, or following a change in control of Issuer, the grantee will be deemed to have attained age 55 and the Career Restricted Stock Units will immediately vest and convert into shares of Issuer common stock based on the grantee's years of continuous service through the date of death, termination resulting from permanent disability or the change in control, as applicable.

SEC source: 0001186747-19-000011 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 19,288,677

F1 · price: On January 2, 2019, the reporting person gifted 3,346 shares of Common Stock (the "Shares") from William S. Boyd Gaming Properties Trust ("WSBGPT") to the education trusts of the following grandchildren in the amounts specified in brackets: The Aysia Lynn Boyd 1997 Education Trust (478 shares), The Taylor Joseph Boyd 1997 Education Trust (478 shares), The Josef William Boyd 1997 Education Trust (478 shares), The T'Mir Kathleen Boyd 1997 Education Trust (478 shares), The William Samuel Boyd 1997 Education Trust (478 shares), The Sean William Johnson 1997 Education Trust (478 shares), and The Justin Boyd 1999 Education Trust (478 shares).

SEC source: 0001186747-19-000001 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 19,372,464

F1 · price: On December 21, 2018, the reporting person gifted 50,000 shares of Common Stock (the "Shares") from William S. Boyd Gaming Properties Trust ("WSBGPT") to The Boyd Foundation.

F2 · ownership.nature: By William S. Boyd Gaming Properties Trust ("WSBGPT") of which reporting person is the trustee, settlor and beneficiary.

SEC source: 0001186747-18-000063 · edgar.xml · derivative · entry 3

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 26,936 shares

Expires 2025-10-29

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: Options granted under Boyd Gaming Corporation 2012 Flexible Stock Option Plan. Vesting plan calls for options to become exercisable at the rate of 33.333% per year on the first day of each successive 12 month period commencing one year from grant date.

SEC source: 0001186747-18-000063 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust*

Disclosed balance after: 19,422,464

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · ownership.nature: By William S. Boyd Gaming Properties Trust ("WSBGPT") of which reporting person is the trustee, settlor and beneficiary.

SEC source: 0001186747-18-000061 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 19,395,528

F1 · shares: The Reporting Person was awarded 20,826 Restricted Stock Units for no consideration pursuant to the Issuer's 2012 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 upon the third anniversary of the date of award. The Restricted Stock Units are subject to the forfeiture and other terms and conditions contained in the award agreement and the 2012 Stock Incentive Plan.

F1 · price: The Reporting Person was awarded 20,826 Restricted Stock Units for no consideration pursuant to the Issuer's 2012 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 upon the third anniversary of the date of award. The Restricted Stock Units are subject to the forfeiture and other terms and conditions contained in the award agreement and the 2012 Stock Incentive Plan.

F2 · ownership.nature: By William S. Boyd Gaming Properties Trust, of which reporting person is the trustee, settlor and beneficiary.

SEC source: 0001186747-18-000041 · edgar.xml · derivative · entry 3

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 33,473 shares

Expires 2024-12-10

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_date: Options granted under Boyd Gaming Corporation 2012 Flexible Stock Option Plan. Vesting plan calls for options to become exercisable at the rate of 33.333% per year on the first day of each successive 12 month period commencing one year from grant date.

SEC source: 0001186747-18-000041 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust*

Disclosed balance after: 19,374,702

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · ownership.nature: By William S. Boyd Gaming Properties Trust ("WSBGPT") of which reporting person is the trustee, settlor and beneficiary.

SEC source: 0001186747-19-000028 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 19,348,073

F1 · shares: Represents shares underlying Performance Share Units that vested on March 1, 2019.

F2 · ownership.nature: By William S. Boyd Gaming Properties Trust, of which reporting person is the trustee, settlor and beneficiary.

SEC source: 0001186747-18-000016 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 19,341,229

F1 · shares: Represents shares underlying Performance Share Units that vested on February 26, 2018.

F2 · ownership.nature: By William S. Boyd Gaming Properties Trust, of which reporting person is the trustee, settlor and beneficiary.

SEC source: 0001212545-18-000040 · wf-form4_151752571695837.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,750

SEC source: 0001186747-18-000010 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 19,288,677

F1 · price: On January 3, 2018, the reporting person gifted 2,023 shares of Common Stock (the "Shares") from William S. Boyd Gaming Properties Trust ("WSBGPT") to the education trusts of the following grandchildren in the amounts specified in brackets: The Aysia Lynn Boyd 1997 Education Trust (289 shares), The Taylor Joseph Boyd 1997 Education Trust (289 shares), The Josef William Boyd 1997 Education Trust (289 shares), The T'Mir Kathleen Boyd 1997 Education Trust (289 shares), The William Samuel Boyd 1997 Education Trust (289 shares), The Sean William Johnson 1997 Education Trust (289 shares), and The Justin Boyd 1999 Education Trust (289 shares).

SEC source: 0001186747-18-000004 · edgar.xml · derivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,633

Underlying: Common Stock · 4,633 shares

Expires not disclosed

F1 · derivative.exercise_price: The Career Restricted Stock Units were granted to the Reporting Person for no consideration pursuant to the Issuer's Career Shares Program under its 2012 Stock Incentive Plan. Each Career Restricted Stock Unit represents a contingent right to receive one share of Issuer common stock.

F2 · derivative.exercise_date: The Career Restricted Stock Units will be paid out in shares of Issuer common stock at the time of retirement based upon the Reporting Person's/grantee's attained age and years of continuous service at the time of retirement. To receive any payout under the Career Shares Program, grantees must be at least years 55 years old and must have been continually employed by the Issuer for a minimum of 10 years. Retirement after 10 years of service will entitle a grantee to 50 percent of his or her Career Restricted Stock Units. This increases to 75 percent after 15 years and 100 percent following 20 years of employment. In the event of grantee's death or permanent disability, or following a change in control of Issuer, the grantee will be deemed to have attained age 55 and the Career Restricted Stock Units will immediately vest and convert into shares of Issuer common stock based on the grantee's years of continuous service through the date of death, termination resulting from permanent disability or the change in control, as applicable.

F2 · derivative.expiration_date: The Career Restricted Stock Units will be paid out in shares of Issuer common stock at the time of retirement based upon the Reporting Person's/grantee's attained age and years of continuous service at the time of retirement. To receive any payout under the Career Shares Program, grantees must be at least years 55 years old and must have been continually employed by the Issuer for a minimum of 10 years. Retirement after 10 years of service will entitle a grantee to 50 percent of his or her Career Restricted Stock Units. This increases to 75 percent after 15 years and 100 percent following 20 years of employment. In the event of grantee's death or permanent disability, or following a change in control of Issuer, the grantee will be deemed to have attained age 55 and the Career Restricted Stock Units will immediately vest and convert into shares of Issuer common stock based on the grantee's years of continuous service through the date of death, termination resulting from permanent disability or the change in control, as applicable.

SEC source: 0001186747-17-000059 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 19,290,700

F1 · ownership.nature: By William S. Boyd Gaming Properties Trust, of which reporting person is the trustee, settlor and beneficiary.

SEC source: 0001186747-17-000046 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 19,322,141

F1 · shares: The Reporting Person was awarded 21,605 Restricted Stock Units for no consideration pursuant to the Issuer's 2012 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 upon the third anniversary of the date of award. The Restricted Stock Units are subject to the forfeiture and other terms and conditions contained in the award agreement and the 2012 Stock Incentive Plan.

F1 · price: The Reporting Person was awarded 21,605 Restricted Stock Units for no consideration pursuant to the Issuer's 2012 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 upon the third anniversary of the date of award. The Restricted Stock Units are subject to the forfeiture and other terms and conditions contained in the award agreement and the 2012 Stock Incentive Plan.

F2 · ownership.nature: By William S. Boyd Gaming Properties Trust, of which reporting person is the trustee, settlor and beneficiary.

SEC source: 0001186747-17-000054 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 19,304,741

F1 · price: On October 27, 2017, the reporting person gifted 17,400 shares of Common Stock (the "Shares") from William S. Boyd Gaming Properties Trust ("WSBGPT") in the amounts specified in brackets: The Samuel J. Boyd Gaming Properties Trust [5,800 shares], the Marianne E. Boyd Johnson Gaming Properties Trust [5,800 shares], and the William R. Boyd Gaming Properties Trust [5,800 shares].

F2 · ownership.nature: By William S. Boyd Gaming Properties Trust ("WSBGPT") of which reporting person is the trustee, settlor and beneficiary.

SEC source: 0001212545-17-000193 · wf-form4_150896535772759.xml · nonDerivative · entry 2

BOYD WILLIAM S · CIK 0000940434 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · William S. Boyd Trust

Disclosed balance after: 4,001,439

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $56.05 to $56.09, inclusive. The reporting person undertakes to provide to Western Alliance Bancorporation, any security holder of Western Alliance Bancorporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within this range.

SEC source: 0001212545-17-000193 · wf-form4_150896535772759.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · William S. Boyd Trust

Disclosed balance after: 4,001,739

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $55.00 to $55.91, inclusive. The reporting person undertakes to provide to Western Alliance Bancorporation, any security holder of Western Alliance Bancorporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within this range.

F2 · balance_after: On July 28, 2017, the Reporting Person transferred 4,000 shares form Direct holdings to the William S. Boyd Trust.

SEC source: 0001186747-17-000041 · edgar.xml · derivative · entry 7

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 28,206 shares

Expires 2023-11-07

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_date: Options granted under Boyd Gaming Corporation 2012 Flexible Stock Option Plan. Vesting plan calls for options to become exercisable at the rate of 33.333% per year on the first day of each successive 12 month period commencing one year from grant date.

SEC source: 0001186747-17-000041 · edgar.xml · nonDerivative · entry 4

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust*

Disclosed balance after: 19,300,536

F3 · price: This transaction was executed in multiple trades at prices ranging from $25.110 to $25.5950. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F5 · ownership.nature: By William S. Boyd Gaming Properties Trust ("WSBGPT") of which reporting person is the trustee, settlor and beneficiary.

SEC source: 0001186747-17-000041 · edgar.xml · nonDerivative · entry 3

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust*

Disclosed balance after: 19,328,742

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F5 · ownership.nature: By William S. Boyd Gaming Properties Trust ("WSBGPT") of which reporting person is the trustee, settlor and beneficiary.

SEC source: 0001186747-17-000041 · edgar.xml · derivative · entry 6

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,206

Underlying: Common Stock · 48,325 shares

Expires 2023-11-07

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_date: Options granted under Boyd Gaming Corporation 2012 Flexible Stock Option Plan. Vesting plan calls for options to become exercisable at the rate of 33.333% per year on the first day of each successive 12 month period commencing one year from grant date.

SEC source: 0001186747-17-000041 · edgar.xml · nonDerivative · entry 2

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust*

Disclosed balance after: 19,300,536

F2 · price: This transaction was executed in multiple trades at prices ranging from $25.00 to $25.2600. The price reported above reflects the weighted average sale price. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected.

F5 · ownership.nature: By William S. Boyd Gaming Properties Trust ("WSBGPT") of which reporting person is the trustee, settlor and beneficiary.

SEC source: 0001186747-17-000041 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust*

Disclosed balance after: 19,348,861

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · balance_after: Moved 218,388 shares of directly held common stock into the William S. Boyd Gaming Properties Trust ("WSBGPT"), The reporting person is the trustee, settlor and beneficiary of the WSBGPT.

F5 · ownership.nature: By William S. Boyd Gaming Properties Trust ("WSBGPT") of which reporting person is the trustee, settlor and beneficiary.

SEC source: 0001186747-17-000027 · edgar.xml · nonDerivative · entry 2

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Limited Partnership *

Disclosed balance after: 0

F1 · kind: Pro rata distribution of partnership interests upon dissolution of BG-09 Limited Partnership, of which each of the William S. Boyd Gaming Properties Trust ("WSBGPT") and the Marianne Boyd Gaming Properties Trust ("MBGPT") were the general partners.

SEC source: 0001186747-17-000017 · edgar.xml · nonDerivative · entry 2

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 218,388

SEC source: 0001186747-17-000017 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 227,763

F1 · shares: Represents shares underlying Performance Share Units that vested on February 24, 2017.

SEC source: 0001212545-17-000018 · wf-form4_148544632819173.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 13,500

SEC source: 0001186747-17-000009 · edgar.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Indirect · By Trust

Disclosed balance after: 19,080,022

F1 · price: On January 6, 2017, the reporting person gifted 3,888 shares of Common Stock (the "Shares") from William S. Boyd Gaming Properties Trust ("WSBGPT") to the education trusts of the following grandchildren in the amounts specified in brackets: The Aysia Lynn Boyd 1997 Education Trust (486 shares), The Samuel Joseph Boyd, Jr., 1997 Education Trust (486 shares), The Taylor Joseph Boyd 1997 Education Trust (486 shares), The Josef William Boyd 1997 Education Trust (486 shares), The T'Mir Kathleen Boyd 1997 Education Trust (486 shares), The William Samuel Boyd 1997 Education Trust (486 shares), The Sean William Johnson 1997 Education Trust (486 shares), and The Justin Boyd 1999 Education Trust (486 shares).

F2 · ownership.nature: By William S. Boyd Gaming Properties Trust ("WSBGPT") of which reporting person is the trustee, settlor and beneficiary.

SEC source: 0001186747-17-000002 · edgar.xml · derivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director · Executive Chairman · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,827

Underlying: Common Stock · 7,827 shares

Expires not disclosed

F1 · derivative.exercise_price: The Career Restricted Stock Units were granted to the Reporting Person for no consideration pursuant to the Issuer's Career Shares Program under its 2012 Stock Incentive Plan. Each Career Restricted Stock Unit represents a contingent right to receive one share of Issuer common stock.

F2 · derivative.exercise_date: The Career Restricted Stock Units will be paid out in shares of Issuer common stock at the time of retirement based upon the Reporting Person's/grantee's attained age and years of continuous service at the time of retirement. To receive any payout under the Career Shares Program, grantees must be at least years 55 years old and must have been continually employed by the Issuer for a minimum of 10 years. Retirement after 10 years of service will entitle a grantee to 50 percent of his or her Career Restricted Stock Units. This increases to 75 percent after 15 years and 100 percent following 20 years of employment. In the event of grantee's death or permanent disability, or following a change in control of Issuer, the grantee will be deemed to have attained age 55 and the Career Restricted Stock Units will immediately vest and convert into shares of Issuer common stock based on the grantee's years of continuous service through the date of death, termination resulting from permanent disability or the change in control, as applicable.

F2 · derivative.expiration_date: The Career Restricted Stock Units will be paid out in shares of Issuer common stock at the time of retirement based upon the Reporting Person's/grantee's attained age and years of continuous service at the time of retirement. To receive any payout under the Career Shares Program, grantees must be at least years 55 years old and must have been continually employed by the Issuer for a minimum of 10 years. Retirement after 10 years of service will entitle a grantee to 50 percent of his or her Career Restricted Stock Units. This increases to 75 percent after 15 years and 100 percent following 20 years of employment. In the event of grantee's death or permanent disability, or following a change in control of Issuer, the grantee will be deemed to have attained age 55 and the Career Restricted Stock Units will immediately vest and convert into shares of Issuer common stock based on the grantee's years of continuous service through the date of death, termination resulting from permanent disability or the change in control, as applicable.

SEC source: 0001212545-16-000515 · wf-form4_147993564227602.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · William S. Boyd Trust

Disclosed balance after: 3,997,939

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $45.08 to $45.17, inclusive. The reporting person undertakes to provide to Western Alliance Bancorporation, any security holder of Western Alliance Bancorporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within this range.