RIOT

SEC source: 0001079973-22-000050 · ownership.xml · derivative · entry 1

D'Ambrosio Lance Varro · CIK 0001611745 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 20,000

Underlying: Common Stock · 12,500 shares

Expires not disclosed

F1 · derivative.exercise_price: Vested restricted stock units ("RSUs") granted under the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") covert into shares of the Issuer's Common Stock, no par value per share, on a one-for-one basis upon settlement by the Issuer in accordance with the procedures of the Plan

F2 · price: These 12,500 RSUs were awarded as compensation for the Reporting Person's service as an independent director on the Issuer's Board of Directors for the year ending December 31, 2022, as approved by the Issuer's Compensation and Human Resources Committee on January 10, 2022. These 12,500 RSUs are eligible to vest in four equal quarterly installments of 3,125 RSUs following the grant date.

F2 · derivative.exercise_date: These 12,500 RSUs were awarded as compensation for the Reporting Person's service as an independent director on the Issuer's Board of Directors for the year ending December 31, 2022, as approved by the Issuer's Compensation and Human Resources Committee on January 10, 2022. These 12,500 RSUs are eligible to vest in four equal quarterly installments of 3,125 RSUs following the grant date.

F2 · derivative.expiration_date: These 12,500 RSUs were awarded as compensation for the Reporting Person's service as an independent director on the Issuer's Board of Directors for the year ending December 31, 2022, as approved by the Issuer's Compensation and Human Resources Committee on January 10, 2022. These 12,500 RSUs are eligible to vest in four equal quarterly installments of 3,125 RSUs following the grant date.

F3 · balance_after: Represents the total direct and indirect beneficial ownership of the security held by the Reporting Person immediately following the issuance reported by this Form 4.

SEC source: 0001079973-22-000048 · ownership.xml · derivative · entry 1

Cho Hannah · CIK 0001846283 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,000

Underlying: Common Stock · 12,500 shares

Expires not disclosed

F1 · derivative.exercise_price: Vested restricted stock units ("RSUs") granted under the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") covert into shares of the Issuer's Common Stock, no par value per share, on a one-for-one basis upon settlement by the Issuer in accordance with the procedures of the Plan.

F2 · price: These 12,500 RSUs were awarded as compensation for the Reporting Person's service as an independent director on the Issuer's Board of Directors for the year ending December 31, 2022, as approved by the Issuer's Compensation and Human Resources Committee on January 10, 2022. These 12,500 RSUs are eligible to vest in four equal quarterly installments of 3,125 RSUs following the grant date.

F2 · derivative.exercise_date: These 12,500 RSUs were awarded as compensation for the Reporting Person's service as an independent director on the Issuer's Board of Directors for the year ending December 31, 2022, as approved by the Issuer's Compensation and Human Resources Committee on January 10, 2022. These 12,500 RSUs are eligible to vest in four equal quarterly installments of 3,125 RSUs following the grant date.

F2 · derivative.expiration_date: These 12,500 RSUs were awarded as compensation for the Reporting Person's service as an independent director on the Issuer's Board of Directors for the year ending December 31, 2022, as approved by the Issuer's Compensation and Human Resources Committee on January 10, 2022. These 12,500 RSUs are eligible to vest in four equal quarterly installments of 3,125 RSUs following the grant date.

F3 · balance_after: Represents the total direct and indirect beneficial ownership of the security held by the Reporting Person immediately following the issuance reported by this Form 4.

SEC source: 0001079973-21-001245 · ownership.xml · nonDerivative · entry 1

Marleau Hubert · CIK 0001833575 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

SEC source: 0001079973-21-001251 · ownership.xml · nonDerivative · entry 1

Brooks Megan M. · CIK 0001855229 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 69,462

SEC source: 0001079973-21-001247 · ownership.xml · nonDerivative · entry 1

D'Ambrosio Lance Varro · CIK 0001611745 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F1 · price: The price reported in Column 4 is an average price of the shares of the Common Stock, no par value per share, (the "Shares") of Riot Blockchain, Inc. (the "Issuer") sold by the Reporting Person in multiple transactions on the indicated date at prices ranging from $24.95 per Share, to $25.03 per Share, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the United States Securities and Exchange Commission, upon request, full information regarding the number of Shares sold at each separate price within the range set forth in this footnote (1) to this Report.

SEC source: 0001079973-21-001217 · ownership.xml · nonDerivative · entry 5

MCGONEGAL JEFFREY · CIK 0001187604 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 343,227

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 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

SEC source: 0001079973-21-001215 · ownership.xml · derivative · entry 8

Les Jason · CIK 0001721702 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 294,867

Underlying: Common Stock · 12,500 shares

Expires not disclosed

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_price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each time-based restricted stock unit ("RSU") and performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F4 · price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each time-based restricted stock unit ("RSU") and performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F8 · derivative.exercise_date: The conversion of 12,500 RSUs reported in Table II represents the settling of the vested portion of the 25,000 RSUs awarded to the Reporting Person by the Issuer on February 8, 2021, pursuant to the terms of the executive employment agreement between the Issuer and the Reporting Person, dated effective as of the grant date, which are eligible to vest in four equal quarterly installments following the grant date.

F8 · derivative.expiration_date: The conversion of 12,500 RSUs reported in Table II represents the settling of the vested portion of the 25,000 RSUs awarded to the Reporting Person by the Issuer on February 8, 2021, pursuant to the terms of the executive employment agreement between the Issuer and the Reporting Person, dated effective as of the grant date, which are eligible to vest in four equal quarterly installments following the grant date.

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

SEC source: 0001079973-21-001215 · ownership.xml · derivative · entry 7

Les Jason · CIK 0001721702 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 307,367

Underlying: Common Stock · 50,000 shares

Expires not disclosed

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_price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each time-based restricted stock unit ("RSU") and performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F4 · price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each time-based restricted stock unit ("RSU") and performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F7 · derivative.exercise_date: The conversion of 50,000 PSUs reported in Table II represents the settling by the Issuer of the vested portion of the PSUs granted to the Reporting Person pursuant to the Award Agreement, which vested upon the Committee's determination that performance criteria corresponding to 50,000 of the PSUs granted to the Reporting Person had been achieved.

F7 · derivative.expiration_date: The conversion of 50,000 PSUs reported in Table II represents the settling by the Issuer of the vested portion of the PSUs granted to the Reporting Person pursuant to the Award Agreement, which vested upon the Committee's determination that performance criteria corresponding to 50,000 of the PSUs granted to the Reporting Person had been achieved.

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

SEC source: 0001079973-21-001215 · ownership.xml · nonDerivative · entry 5

Les Jason · CIK 0001721702 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 266,027

F5 · shares: Represents net settlement in connection with the conversion of 50,000 vested PSUs and 12,500 vested RSUs, as permitted under the Plan and approved by the Committee.

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

F3 · ownership.nature: Shares held of record in trust by Jason M. Les, Trustee of The Jason M. Les Trust, dated March 8, 2021.

SEC source: 0001079973-21-001215 · ownership.xml · nonDerivative · entry 4

Les Jason · CIK 0001721702 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · See footntoe

Disclosed balance after: 272,277

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 · price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each time-based restricted stock unit ("RSU") and performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

F3 · ownership.nature: Shares held of record in trust by Jason M. Les, Trustee of The Jason M. Les Trust, dated March 8, 2021.

SEC source: 0001079973-21-001215 · ownership.xml · nonDerivative · entry 3

Les Jason · CIK 0001721702 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 259,777

F5 · shares: Represents net settlement in connection with the conversion of 50,000 vested PSUs and 12,500 vested RSUs, as permitted under the Plan and approved by the Committee.

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

F3 · ownership.nature: Shares held of record in trust by Jason M. Les, Trustee of The Jason M. Les Trust, dated March 8, 2021.

SEC source: 0001079973-21-001215 · ownership.xml · nonDerivative · entry 2

Les Jason · CIK 0001721702 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 284,777

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 · price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each time-based restricted stock unit ("RSU") and performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

F3 · ownership.nature: Shares held of record in trust by Jason M. Les, Trustee of The Jason M. Les Trust, dated March 8, 2021.

SEC source: 0001079973-21-001213 · ownership.xml · derivative · entry 7

Jackman William Richard · CIK 0001872927 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,973

Underlying: Common Stock · 2,657 shares

Expires not disclosed

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 · derivative.exercise_price: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

F6 · derivative.exercise_date: The conversion of 2,657 RSUs reported in Table II represents the settling of the vested portion of the 10,630 RSUs awarded to the Reporting Person by the Issuer under the Plan on July 15, 2021, pursuant to an award agreement between the Issuer and the Reporting Person dated as of the grant date, which are eligible to vest in four equal quarterly installments following the grant date.

F6 · derivative.expiration_date: The conversion of 2,657 RSUs reported in Table II represents the settling of the vested portion of the 10,630 RSUs awarded to the Reporting Person by the Issuer under the Plan on July 15, 2021, pursuant to an award agreement between the Issuer and the Reporting Person dated as of the grant date, which are eligible to vest in four equal quarterly installments following the grant date.

SEC source: 0001079973-21-001213 · ownership.xml · derivative · entry 6

Jackman William Richard · CIK 0001872927 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,630

Underlying: Common Stock · 36,000 shares

Expires not disclosed

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 · derivative.exercise_price: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

F2 · price: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

F5 · derivative.exercise_date: The conversion of 36,000 PSUs reported in Table II represents the settling by the Issuer of the vested portion of the PSUs granted to the Reporting Person pursuant to the Award Agreement, which vested upon the Committee's determination that performance criteria corresponding to 36,000 of the PSUs granted to the Reporting Person had been achieved.

F5 · derivative.expiration_date: The conversion of 36,000 PSUs reported in Table II represents the settling by the Issuer of the vested portion of the PSUs granted to the Reporting Person pursuant to the Award Agreement, which vested upon the Committee's determination that performance criteria corresponding to 36,000 of the PSUs granted to the Reporting Person had been achieved.

F3 · balance_after: Represents net settlement in connection with the conversion 36,000 vested PSUs and 2,657 vested RSUs into shares of the Issuer's Common Stock, as permitted under the Plan and approved by the Committee.

SEC source: 0001079973-21-001213 · ownership.xml · nonDerivative · entry 4

Jackman William Richard · CIK 0001872927 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,194

F3 · shares: Represents net settlement in connection with the conversion 36,000 vested PSUs and 2,657 vested RSUs into shares of the Issuer's Common Stock, as permitted under the Plan and approved by the Committee.

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

SEC source: 0001079973-21-001213 · ownership.xml · nonDerivative · entry 3

Jackman William Richard · CIK 0001872927 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,257

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 · price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each time-based restricted stock unit ("RSU") and performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

SEC source: 0001079973-21-001213 · ownership.xml · nonDerivative · entry 2

Jackman William Richard · CIK 0001872927 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 21,600

F3 · shares: Represents net settlement in connection with the conversion 36,000 vested PSUs and 2,657 vested RSUs into shares of the Issuer's Common Stock, as permitted under the Plan and approved by the Committee.

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

SEC source: 0001079973-21-001213 · ownership.xml · nonDerivative · entry 1

Jackman William Richard · CIK 0001872927 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 36,000

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 · price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each time-based restricted stock unit ("RSU") and performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

SEC source: 0001079973-21-001217 · ownership.xml · derivative · entry 11

MCGONEGAL JEFFREY · CIK 0001187604 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 12,000 shares

Expires not disclosed

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.

F8 · derivative.exercise_date: The conversion of Employee Stock Options reported in Table II represents the exercise by the Reporting Person of all 12,000 Employee Stock Options granted to the Reporting Person by the Committee. The Employee Stock Options were originally granted under the Issuer's legacy 2017 equity plan, but are being settled under the Plan, which replaced the 2017 equity plan as of its adoption in 2019.

F8 · derivative.expiration_date: The conversion of Employee Stock Options reported in Table II represents the exercise by the Reporting Person of all 12,000 Employee Stock Options granted to the Reporting Person by the Committee. The Employee Stock Options were originally granted under the Issuer's legacy 2017 equity plan, but are being settled under the Plan, which replaced the 2017 equity plan as of its adoption in 2019.

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

SEC source: 0001079973-21-001217 · ownership.xml · derivative · entry 10

MCGONEGAL JEFFREY · CIK 0001187604 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,000

Underlying: Common Stock · 10,000 shares

Expires not disclosed

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_price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each time-based restricted stock unit ("RSU") and performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F1 · price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each time-based restricted stock unit ("RSU") and performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F7 · derivative.exercise_date: The conversion of 10,000 RSUs reported in Table II represents the settling of the vested portion of the 20,000 RSUs awarded to the Reporting Person by the Issuer on February 8, 2021 pursuant to the terms of the executive employment agreement between the Issuer and the Reporting Person, dated effective as of the grant date, which are eligible to vest in four equal quarterly installments following the grant date.

F7 · derivative.expiration_date: The conversion of 10,000 RSUs reported in Table II represents the settling of the vested portion of the 20,000 RSUs awarded to the Reporting Person by the Issuer on February 8, 2021 pursuant to the terms of the executive employment agreement between the Issuer and the Reporting Person, dated effective as of the grant date, which are eligible to vest in four equal quarterly installments following the grant date.

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

SEC source: 0001079973-21-001217 · ownership.xml · derivative · entry 9

MCGONEGAL JEFFREY · CIK 0001187604 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 15,000

Underlying: Common Stock · 44,000 shares

Expires not disclosed

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_price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each time-based restricted stock unit ("RSU") and performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F1 · price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each time-based restricted stock unit ("RSU") and performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F6 · derivative.exercise_date: The conversion of 44,000 PSUs reported in Table II represents the settling by the Issuer of the vested portion of the PSUs granted to the Reporting Person on August 12, 2021 pursuant to the Award Agreement, which vested upon the Committee's determination that performance criteria corresponding to 44,000 PSUs had been achieved.

F6 · derivative.expiration_date: The conversion of 44,000 PSUs reported in Table II represents the settling by the Issuer of the vested portion of the PSUs granted to the Reporting Person on August 12, 2021 pursuant to the Award Agreement, which vested upon the Committee's determination that performance criteria corresponding to 44,000 PSUs had been achieved.

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

SEC source: 0001079973-21-001217 · ownership.xml · nonDerivative · entry 7

MCGONEGAL JEFFREY · CIK 0001187604 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 291,513

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

SEC source: 0001079973-21-001217 · ownership.xml · nonDerivative · entry 6

MCGONEGAL JEFFREY · CIK 0001187604 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 341,513

F4 · shares: Represents shares of Common Stock withheld as payment of the exercise price due in connection with the exercise of 12,000 vested Employee Stock Options awarded to the Reporting Person by the Committee, as permitted by the Plan and approved by the Committee.

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

SEC source: 0001079973-21-001217 · ownership.xml · nonDerivative · entry 4

MCGONEGAL JEFFREY · CIK 0001187604 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 331,227

F3 · shares: Represents net settlement in connection with the conversion of 44,000 vested PSUs and 10,000 vested RSUs into shares of the Issuer's Common Stock, as permitted under the Plan and approved by the Committee.

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

SEC source: 0001079973-21-001217 · ownership.xml · nonDerivative · entry 3

MCGONEGAL JEFFREY · CIK 0001187604 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 335,327

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 · price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each time-based restricted stock unit ("RSU") and performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

SEC source: 0001079973-21-001217 · ownership.xml · nonDerivative · entry 2

MCGONEGAL JEFFREY · CIK 0001187604 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 325,327

F3 · shares: Represents net settlement in connection with the conversion of 44,000 vested PSUs and 10,000 vested RSUs into shares of the Issuer's Common Stock, as permitted under the Plan and approved by the Committee.

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

SEC source: 0001079973-21-001217 · ownership.xml · nonDerivative · entry 1

MCGONEGAL JEFFREY · CIK 0001187604 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 343,367

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 · price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each time-based restricted stock unit ("RSU") and performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

SEC source: 0001079973-21-001216 · ownership.xml · derivative · entry 2

Marleau Hubert · CIK 0001833575 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,500

Underlying: Common Stock · 10,000 shares

Expires not disclosed

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 · price: Vested restricted stock units ("RSUs") granted under the Riot Blockchain, Inc. 2019 Equity Incentive Plan (the "Plan") covert into shares of the Issuer's Common Stock on a one-for-one basis, subject to any net settlement permitted by the Plan and approved by the Issuer's Compensation and Human Resources Committee upon settlement by the Issuer in accordance with the procedures of the Plan.

F3 · derivative.exercise_date: The conversion of 10,000 vested RSUs reported in Table II relates to the settlement by the Issuer of the vested portion of the 12,500 RSUs granted under the Plan to the Reporting Person on February 9, 2021. These 12,500 RSUs included 2,500 RSUs vested as of the grant date, with the remaining 10,000 RSUs eligible to vest in four quarterly installments after the grant date.

F3 · derivative.expiration_date: The conversion of 10,000 vested RSUs reported in Table II relates to the settlement by the Issuer of the vested portion of the 12,500 RSUs granted under the Plan to the Reporting Person on February 9, 2021. These 12,500 RSUs included 2,500 RSUs vested as of the grant date, with the remaining 10,000 RSUs eligible to vest in four quarterly installments after the grant date.

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

SEC source: 0001079973-21-001216 · ownership.xml · nonDerivative · entry 1

Marleau Hubert · CIK 0001833575 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

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 · price: Vested restricted stock units ("RSUs") granted under the Riot Blockchain, Inc. 2019 Equity Incentive Plan (the "Plan") covert into shares of the Issuer's Common Stock on a one-for-one basis, subject to any net settlement permitted by the Plan and approved by the Issuer's Compensation and Human Resources Committee upon settlement by the Issuer in accordance with the procedures of the Plan.

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

SEC source: 0001079973-21-001215 · ownership.xml · nonDerivative · entry 1

Les Jason · CIK 0001721702 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · See footnote

Disclosed balance after: 234,777

F1 · price: The reported disposition represents a bona fide gift made by the Reporting Person to a charitable organization.

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

F3 · ownership.nature: Shares held of record in trust by Jason M. Les, Trustee of The Jason M. Les Trust, dated March 8, 2021.

SEC source: 0001079973-21-001211 · ownership.xml · derivative · entry 2

D'Ambrosio Lance Varro · CIK 0001611745 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,500

Underlying: Common Stock · 5,000 shares

Expires not disclosed

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_price: Vested restricted stock units ("RSUs") granted under the Riot Blockchain, Inc. 2019 Equity Incentive Plan (the "Plan") covert into shares of the Issuer's common stock, no par value per share, (the "Common Stock") on a one-for-one basis, subject to any net settlement permitted by the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee") upon settlement by the Issuer in accordance with the procedures of the Plan.

F1 · price: Vested restricted stock units ("RSUs") granted under the Riot Blockchain, Inc. 2019 Equity Incentive Plan (the "Plan") covert into shares of the Issuer's common stock, no par value per share, (the "Common Stock") on a one-for-one basis, subject to any net settlement permitted by the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee") upon settlement by the Issuer in accordance with the procedures of the Plan.

F3 · derivative.exercise_date: The conversion of 5,000 vested RSUs reported in Table II relates to the settlement by the Issuer of the vested portion of the 12,500 RSUs granted under the Plan to the Reporting Person on May 28, 2021. Of the 12,500 RSUs awarded to the Reporting Person, 2,500 RSUs vested immediately as of the grant date, with the remaining 10,000 RSUs eligible to vest in four quarterly installments after the grant date.

F3 · derivative.expiration_date: The conversion of 5,000 vested RSUs reported in Table II relates to the settlement by the Issuer of the vested portion of the 12,500 RSUs granted under the Plan to the Reporting Person on May 28, 2021. Of the 12,500 RSUs awarded to the Reporting Person, 2,500 RSUs vested immediately as of the grant date, with the remaining 10,000 RSUs eligible to vest in four quarterly installments after the grant date.

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported ansaction.

SEC source: 0001079973-21-001211 · ownership.xml · nonDerivative · entry 1

D'Ambrosio Lance Varro · CIK 0001611745 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,000

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 · price: Vested restricted stock units ("RSUs") granted under the Riot Blockchain, Inc. 2019 Equity Incentive Plan (the "Plan") covert into shares of the Issuer's common stock, no par value per share, (the "Common Stock") on a one-for-one basis, subject to any net settlement permitted by the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee") upon settlement by the Issuer in accordance with the procedures of the Plan.

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported ansaction.

SEC source: 0001079973-21-001210 · ownership.xml · derivative · entry 3

Cho Hannah · CIK 0001846283 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,500

Underlying: Common Stock · 10,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Vested restricted stock units ("RSUs") granted under the Riot Blockchain, Inc. 2019 Equity Incentive Plan (the "Plan") covert into shares of the Issuer's common stock, no par value per share, (the "Common Stock") on a one-for-one basis, subject to any net settlement permitted by the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee") upon settlement by the Issuer in accordance with the procedures of the Plan.

F4 · price: The conversion of 10,000 vested RSUs reported in Table II relates to the settlement by the Issuer of the vested portion of the 12,500 RSUs granted to the Reporting Person on February 17, 2021. Of the 12,500 RSUs awarded to the Reporting Person, 2,500 RSUs vested immediately as of the grant date, with the remaining 10,000 RSUs eligible to vest in four quarterly installments after the grant date.

F4 · derivative.exercise_date: The conversion of 10,000 vested RSUs reported in Table II relates to the settlement by the Issuer of the vested portion of the 12,500 RSUs granted to the Reporting Person on February 17, 2021. Of the 12,500 RSUs awarded to the Reporting Person, 2,500 RSUs vested immediately as of the grant date, with the remaining 10,000 RSUs eligible to vest in four quarterly installments after the grant date.

F4 · derivative.expiration_date: The conversion of 10,000 vested RSUs reported in Table II relates to the settlement by the Issuer of the vested portion of the 12,500 RSUs granted to the Reporting Person on February 17, 2021. Of the 12,500 RSUs awarded to the Reporting Person, 2,500 RSUs vested immediately as of the grant date, with the remaining 10,000 RSUs eligible to vest in four quarterly installments after the grant date.

F3 · balance_after: Represents net settlement in connection with the conversion of 10,000 vested RSUs into shares of the Issuer's Common Stock, as permitted by the Plan and approved by the Committee.

SEC source: 0001079973-21-001210 · ownership.xml · nonDerivative · entry 2

Cho Hannah · CIK 0001846283 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,000

F3 · shares: Represents net settlement in connection with the conversion of 10,000 vested RSUs into shares of the Issuer's Common Stock, as permitted by the Plan and approved by the Committee.

F2 · balance_after: Represents the total direct and indirect beneficial ownership of the security held by the Reporting Person immediately following the issuance reported by this Form 4.

SEC source: 0001079973-21-001210 · ownership.xml · nonDerivative · entry 1

Cho Hannah · CIK 0001846283 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,000

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 · price: Vested restricted stock units ("RSUs") granted under the Riot Blockchain, Inc. 2019 Equity Incentive Plan (the "Plan") covert into shares of the Issuer's common stock, no par value per share, (the "Common Stock") on a one-for-one basis, subject to any net settlement permitted by the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee") upon settlement by the Issuer in accordance with the procedures of the Plan.

F2 · balance_after: Represents the total direct and indirect beneficial ownership of the security held by the Reporting Person immediately following the issuance reported by this Form 4.

SEC source: 0001079973-21-001208 · ownership.xml · derivative · entry 7

Brooks Megan M. · CIK 0001855229 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,000

Underlying: Common Stock · 3,000 shares

Expires not disclosed

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_price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each time-based restricted stock unit ("RSUs") and each performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F2 · price: Represents the total direct and indirect beneficial ownership of the security held by the Reporting Person immediately following the issuance reported by this Form 4.

F6 · derivative.exercise_date: The conversion of 3,000 vested RSUs reported in Table II relates to the settlement by the Issuer of the remaining unsettled portion of the 6,000 RSUs granted to the Reporting Person on April 6, 2021, which vested in four quarterly installments after the grant date.

F6 · derivative.expiration_date: The conversion of 3,000 vested RSUs reported in Table II relates to the settlement by the Issuer of the remaining unsettled portion of the 6,000 RSUs granted to the Reporting Person on April 6, 2021, which vested in four quarterly installments after the grant date.

F3 · balance_after: Represents net settlement in connection with the conversion of 39,999 vested PSUs and 3,000 vested RSUs into shares of the Issuer's Common Stock, as permitted by the Plan and approved by the Committee.

SEC source: 0001079973-21-001208 · ownership.xml · derivative · entry 6

Brooks Megan M. · CIK 0001855229 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,000

Underlying: Common Stock · 39,999 shares

Expires not disclosed

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_price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each time-based restricted stock unit ("RSUs") and each performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F1 · price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each time-based restricted stock unit ("RSUs") and each performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F5 · derivative.exercise_date: The conversion of 39,999 PSUs reported in Table II represents the settling by the Issuer of the vested portion of the PSUs granted to the Reporting Person pursuant to the Award Agreement, which vested upon the Committee's determination that performance criteria corresponding to 39,999 of the PSUs granted to the Reporting Person had been achieved.

F5 · derivative.expiration_date: The conversion of 39,999 PSUs reported in Table II represents the settling by the Issuer of the vested portion of the PSUs granted to the Reporting Person pursuant to the Award Agreement, which vested upon the Committee's determination that performance criteria corresponding to 39,999 of the PSUs granted to the Reporting Person had been achieved.

F2 · balance_after: Represents the total direct and indirect beneficial ownership of the security held by the Reporting Person immediately following the issuance reported by this Form 4.

SEC source: 0001079973-21-001208 · ownership.xml · nonDerivative · entry 4

Brooks Megan M. · CIK 0001855229 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 74,462

F3 · shares: Represents net settlement in connection with the conversion of 39,999 vested PSUs and 3,000 vested RSUs into shares of the Issuer's Common Stock, as permitted by the Plan and approved by the Committee.

F2 · balance_after: Represents the total direct and indirect beneficial ownership of the security held by the Reporting Person immediately following the issuance reported by this Form 4.

SEC source: 0001079973-21-001208 · ownership.xml · nonDerivative · entry 3

Brooks Megan M. · CIK 0001855229 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 75,462

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 · price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each time-based restricted stock unit ("RSUs") and each performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F2 · balance_after: Represents the total direct and indirect beneficial ownership of the security held by the Reporting Person immediately following the issuance reported by this Form 4.

SEC source: 0001079973-21-001208 · ownership.xml · nonDerivative · entry 2

Brooks Megan M. · CIK 0001855229 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 72,462

F3 · shares: Represents net settlement in connection with the conversion of 39,999 vested PSUs and 3,000 vested RSUs into shares of the Issuer's Common Stock, as permitted by the Plan and approved by the Committee.

F2 · balance_after: Represents the total direct and indirect beneficial ownership of the security held by the Reporting Person immediately following the issuance reported by this Form 4.

SEC source: 0001079973-21-001208 · ownership.xml · nonDerivative · entry 1

Brooks Megan M. · CIK 0001855229 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 84,461

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 · price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each time-based restricted stock unit ("RSUs") and each performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F2 · balance_after: Represents the total direct and indirect beneficial ownership of the security held by the Reporting Person immediately following the issuance reported by this Form 4.

SEC source: 0001079973-21-001218 · ownership.xml · derivative · entry 1

Theriot Lyle Joseph · CIK 0001864143 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,975

Underlying: Common Stock · 6,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F2 · price: On August 12, 2021, the Issuer and the Reporting Person entered into a Performance Restricted Stock Unit Award Agreement, (the "Award Agreement") pursuant to which the Issuer granted the Reporting Person PSUs, contingent upon the Issuer's achievement of certain performance criteria during the performance period ending on December 31, 2023. On December 3, 2021, the Committee determined that, as of the end of the third fiscal quarter of 2021, the performance criteria for 6,000 PSUs granted to the Reporting Person under the Award Agreement had been achieved. Accordingly, the issuance of 6,000 PSUs reported on this form became vested and eligible to be settled by the Issuer as restricted stock units in accordance with the Plan and the Award Agreement.

F2 · derivative.exercise_date: On August 12, 2021, the Issuer and the Reporting Person entered into a Performance Restricted Stock Unit Award Agreement, (the "Award Agreement") pursuant to which the Issuer granted the Reporting Person PSUs, contingent upon the Issuer's achievement of certain performance criteria during the performance period ending on December 31, 2023. On December 3, 2021, the Committee determined that, as of the end of the third fiscal quarter of 2021, the performance criteria for 6,000 PSUs granted to the Reporting Person under the Award Agreement had been achieved. Accordingly, the issuance of 6,000 PSUs reported on this form became vested and eligible to be settled by the Issuer as restricted stock units in accordance with the Plan and the Award Agreement.

F2 · derivative.expiration_date: On August 12, 2021, the Issuer and the Reporting Person entered into a Performance Restricted Stock Unit Award Agreement, (the "Award Agreement") pursuant to which the Issuer granted the Reporting Person PSUs, contingent upon the Issuer's achievement of certain performance criteria during the performance period ending on December 31, 2023. On December 3, 2021, the Committee determined that, as of the end of the third fiscal quarter of 2021, the performance criteria for 6,000 PSUs granted to the Reporting Person under the Award Agreement had been achieved. Accordingly, the issuance of 6,000 PSUs reported on this form became vested and eligible to be settled by the Issuer as restricted stock units in accordance with the Plan and the Award Agreement.

F3 · balance_after: Represents the total direct and indirect beneficial ownership of the security held by the Reporting Person immediately following the issuance reported by this Form 4.

SEC source: 0001079973-21-001217 · ownership.xml · derivative · entry 8

MCGONEGAL JEFFREY · CIK 0001187604 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 59,000

Underlying: Common Stock · 7,333 shares

Expires not disclosed

F1 · derivative.exercise_price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each time-based restricted stock unit ("RSU") and performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F1 · price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each time-based restricted stock unit ("RSU") and performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F5 · derivative.exercise_date: On August 12, 2021, the Issuer and the Reporting Person entered into a Performance Restricted Stock Unit Award Agreement, (the "Award Agreement") pursuant to which the Issuer granted the Reporting Person PSUs, contingent upon the Issuer's achievement of certain performance criteria during the performance period ending on December 31, 2023. On December 3, 2021, the Committee determined that, as of the end of the third fiscal quarter of 2021, the performance criteria for 7,333 PSUs granted to the Reporting Person under the Award Agreement had been achieved. Accordingly, the 7,333 PSUs reported on this form became vested and eligible to be settled by the Issuer as restricted stock units in accordance with the Plan and the Award Agreement.

F5 · derivative.expiration_date: On August 12, 2021, the Issuer and the Reporting Person entered into a Performance Restricted Stock Unit Award Agreement, (the "Award Agreement") pursuant to which the Issuer granted the Reporting Person PSUs, contingent upon the Issuer's achievement of certain performance criteria during the performance period ending on December 31, 2023. On December 3, 2021, the Committee determined that, as of the end of the third fiscal quarter of 2021, the performance criteria for 7,333 PSUs granted to the Reporting Person under the Award Agreement had been achieved. Accordingly, the 7,333 PSUs reported on this form became vested and eligible to be settled by the Issuer as restricted stock units in accordance with the Plan and the Award Agreement.

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

SEC source: 0001079973-21-001215 · ownership.xml · derivative · entry 6

Les Jason · CIK 0001721702 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 357,367

Underlying: Common Stock · 8,333 shares

Expires not disclosed

F4 · derivative.exercise_price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each time-based restricted stock unit ("RSU") and performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F4 · price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each time-based restricted stock unit ("RSU") and performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F6 · derivative.exercise_date: On December 3, 2021, the Committee determined that, as of the end of the third fiscal quarter of 2021, the performance criteria for 8,333 PSUs had been achieved and, therefore, 8,333 PSUs became vested and eligible to be settled by the Issuer in accordance with the Plan. The PSUs were issued to the Reporting Person under the Plan pursuant to the Performance Restricted Stock Unit Award Agreement, dated as of August 12, 2021, between the Issuer and the Reporting Person (the "Award Agreement"), as approved by the Committee.

F6 · derivative.expiration_date: On December 3, 2021, the Committee determined that, as of the end of the third fiscal quarter of 2021, the performance criteria for 8,333 PSUs had been achieved and, therefore, 8,333 PSUs became vested and eligible to be settled by the Issuer in accordance with the Plan. The PSUs were issued to the Reporting Person under the Plan pursuant to the Performance Restricted Stock Unit Award Agreement, dated as of August 12, 2021, between the Issuer and the Reporting Person (the "Award Agreement"), as approved by the Committee.

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

SEC source: 0001079973-21-001213 · ownership.xml · derivative · entry 5

Jackman William Richard · CIK 0001872927 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,630

Underlying: Common Stock · 6,000 shares

Expires not disclosed

F2 · derivative.exercise_price: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

F2 · price: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.

F4 · derivative.exercise_date: On December 3, 2021, the Committee determined that, as of the end of the third fiscal quarter of 2021, the performance criteria for 6,000 PSUs had been achieved and, therefore, 6,000 PSUs became vested and eligible to be settled by the Issuer in accordance with the Plan. The PSUs were issued to the Reporting Person under the Plan pursuant to the Performance Restricted Stock Unit Award Agreement, dated as of August 12, 2021, between the Issuer and the Reporting Person (the "Award Agreement"), as approved by the Committee.

F4 · derivative.expiration_date: On December 3, 2021, the Committee determined that, as of the end of the third fiscal quarter of 2021, the performance criteria for 6,000 PSUs had been achieved and, therefore, 6,000 PSUs became vested and eligible to be settled by the Issuer in accordance with the Plan. The PSUs were issued to the Reporting Person under the Plan pursuant to the Performance Restricted Stock Unit Award Agreement, dated as of August 12, 2021, between the Issuer and the Reporting Person (the "Award Agreement"), as approved by the Committee.

F3 · balance_after: Represents net settlement in connection with the conversion 36,000 vested PSUs and 2,657 vested RSUs into shares of the Issuer's Common Stock, as permitted under the Plan and approved by the Committee.

SEC source: 0001079973-21-001212 · ownership.xml · derivative · entry 1

Harris Chad Everett · CIK 0001863770 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,975

Underlying: Common Stock · 6,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F2 · price: On August 12, 2021, the Issuer and the Reporting Person entered into a Performance Restricted Stock Unit Award Agreement, (the "Award Agreement") pursuant to which the Issuer granted the Reporting Person PSUs, contingent upon the Issuer's achievement of certain performance criteria during the performance period ending on December 31, 2023. On December 3, 2021, the Committee determined that, as of the end of the third fiscal quarter of 2021, the performance criteria for 6,000 PSUs granted to the Reporting Person under the Award Agreement had been achieved. Accordingly, the issuance of 6,000 PSUs reported on this form became vested and eligible to be settled by the Issuer as restricted stock units in accordance with the Plan and the Award Agreement.

F2 · derivative.exercise_date: On August 12, 2021, the Issuer and the Reporting Person entered into a Performance Restricted Stock Unit Award Agreement, (the "Award Agreement") pursuant to which the Issuer granted the Reporting Person PSUs, contingent upon the Issuer's achievement of certain performance criteria during the performance period ending on December 31, 2023. On December 3, 2021, the Committee determined that, as of the end of the third fiscal quarter of 2021, the performance criteria for 6,000 PSUs granted to the Reporting Person under the Award Agreement had been achieved. Accordingly, the issuance of 6,000 PSUs reported on this form became vested and eligible to be settled by the Issuer as restricted stock units in accordance with the Plan and the Award Agreement.

F2 · derivative.expiration_date: On August 12, 2021, the Issuer and the Reporting Person entered into a Performance Restricted Stock Unit Award Agreement, (the "Award Agreement") pursuant to which the Issuer granted the Reporting Person PSUs, contingent upon the Issuer's achievement of certain performance criteria during the performance period ending on December 31, 2023. On December 3, 2021, the Committee determined that, as of the end of the third fiscal quarter of 2021, the performance criteria for 6,000 PSUs granted to the Reporting Person under the Award Agreement had been achieved. Accordingly, the issuance of 6,000 PSUs reported on this form became vested and eligible to be settled by the Issuer as restricted stock units in accordance with the Plan and the Award Agreement.

F3 · balance_after: Represents the total direct and indirect beneficial ownership of the security held by the Reporting Person immediately following the issuance reported by this Form 4.

SEC source: 0001079973-21-001208 · ownership.xml · derivative · entry 5

Brooks Megan M. · CIK 0001855229 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 51,999

Underlying: Common Stock · 6,666 shares

Expires not disclosed

F1 · derivative.exercise_price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each time-based restricted stock unit ("RSUs") and each performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F1 · price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each time-based restricted stock unit ("RSUs") and each performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F4 · derivative.exercise_date: On August 12, 2021, the Issuer and the Reporting Person entered into a Performance Restricted Stock Unit Award Agreement, (the "Award Agreement") pursuant to which the Issuer granted the Reporting Person PSUs, contingent upon the Issuer's achievement of certain performance criteria during the performance period ending on December 31, 2023. On December 3, 2021, the Committee determined that, as of the end of the third fiscal quarter of 2021, the performance criteria for 6,666 PSUs granted to the Reporting Person under the Award Agreement had been achieved. Accordingly, the issuance of 6,666 PSUs reported on this form became vested and eligible to be settled by the Issuer as restricted stock units in accordance with the Plan and the Award Agreement.

F4 · derivative.expiration_date: On August 12, 2021, the Issuer and the Reporting Person entered into a Performance Restricted Stock Unit Award Agreement, (the "Award Agreement") pursuant to which the Issuer granted the Reporting Person PSUs, contingent upon the Issuer's achievement of certain performance criteria during the performance period ending on December 31, 2023. On December 3, 2021, the Committee determined that, as of the end of the third fiscal quarter of 2021, the performance criteria for 6,666 PSUs granted to the Reporting Person under the Award Agreement had been achieved. Accordingly, the issuance of 6,666 PSUs reported on this form became vested and eligible to be settled by the Issuer as restricted stock units in accordance with the Plan and the Award Agreement.

F2 · balance_after: Represents the total direct and indirect beneficial ownership of the security held by the Reporting Person immediately following the issuance reported by this Form 4.

SEC source: 0001079973-21-001209 · ownership.xml · derivative · entry 1

YI SOO IL BENJAMIN · CIK 0001757880 · Director · Executive Chairman

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 302,642

Underlying: Common Stock · 8,333 shares

Expires not disclosed

F1 · derivative.exercise_price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F1 · price: Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each performance-based restricted stock unit ("PSUs") represents a contingent right to receive one share of the Issuer's common stock, no par value per share, ("Common Stock") subject to any net settlement permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee"), following vesting and settlement by the Issuer.

F2 · derivative.exercise_date: On August 12, 2021, the Issuer and the Reporting Person entered into a Performance Restricted Stock Unit Award Agreement, dated as of August 12, 2021, (the "Award Agreement") pursuant to which the Issuer granted the Reporting Person PSUs, contingent upon the Issuer's achievement of certain performance criteria during the performance period ending on December 31, 2023. On December 3, 2021, the Committee determined that, as of the end of the third fiscal quarter of 2021, the performance criteria for 8,333 PSUs granted to the Reporting Person under the Award Agreement had been achieved. Accordingly, the 8,333 PSUs reported on this form became vested and eligible to be settled by the Issuer as restricted stock units in accordance with the Plan and the Award Agreement.

F2 · derivative.expiration_date: On August 12, 2021, the Issuer and the Reporting Person entered into a Performance Restricted Stock Unit Award Agreement, dated as of August 12, 2021, (the "Award Agreement") pursuant to which the Issuer granted the Reporting Person PSUs, contingent upon the Issuer's achievement of certain performance criteria during the performance period ending on December 31, 2023. On December 3, 2021, the Committee determined that, as of the end of the third fiscal quarter of 2021, the performance criteria for 8,333 PSUs granted to the Reporting Person under the Award Agreement had been achieved. Accordingly, the 8,333 PSUs reported on this form became vested and eligible to be settled by the Issuer as restricted stock units in accordance with the Plan and the Award Agreement.

F3 · balance_after: Represents the total direct and indirect beneficial ownership of the security held by the Reporting Person immediately following the issuance reported by this Form 4.

SEC source: 0001079973-21-001105 · ownership.xml · derivative · entry 1

Brooks Megan M. · CIK 0001855229 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 45,333

Underlying: Common Stock · 6,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Vested restricted stock units ("RSUs") granted under the Riot Blockchain, Inc. 2019 Equity Incentive Plan (the "Plan") covert into shares of the Issuer's Common Stock on a one-for-one basis upon settlement by the Issuer in accordance with the procedures of the Plan.

F2 · price: On November 5, 2021, the Reporting Person was granted an award of 6,000 RSUs under the Plan pursuant to an equity award agreement between the Issuer and the Reporting Person (the "Award Agreement") dated effective as of that date. Subject to the terms and conditions set forth in the Award Agreement, these 6,000 RSUs are eligible to vest in four equal quarterly installments commencing on January 1, 2022.

F2 · derivative.exercise_date: On November 5, 2021, the Reporting Person was granted an award of 6,000 RSUs under the Plan pursuant to an equity award agreement between the Issuer and the Reporting Person (the "Award Agreement") dated effective as of that date. Subject to the terms and conditions set forth in the Award Agreement, these 6,000 RSUs are eligible to vest in four equal quarterly installments commencing on January 1, 2022.

F2 · derivative.expiration_date: On November 5, 2021, the Reporting Person was granted an award of 6,000 RSUs under the Plan pursuant to an equity award agreement between the Issuer and the Reporting Person (the "Award Agreement") dated effective as of that date. Subject to the terms and conditions set forth in the Award Agreement, these 6,000 RSUs are eligible to vest in four equal quarterly installments commencing on January 1, 2022.

F3 · balance_after: Represents the total direct and indirect beneficial ownership of the security held by the Reporting Person immediately following the issuance reported by this Form 4.

SEC source: 0001079973-21-001027 · ownership.xml · derivative · entry 3

Theriot Lyle Joseph · CIK 0001864143 · see Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,975

Underlying: Common Stock · 34,974 shares

Expires not disclosed

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_price: Vested restricted stock units ("RSU") and vested performance-based restricted stock units ("PSUs") awarded to the Reporting Person under the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") are convertible into shares of the Issuer's common stock, no par value per share, ("Common Stock") on a one-for-one basis, subject to any net settlement for taxes permitted under the Plan, upon settlement by the Issuer in accordance with the procedures of the Plan.

F1 · price: Vested restricted stock units ("RSU") and vested performance-based restricted stock units ("PSUs") awarded to the Reporting Person under the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") are convertible into shares of the Issuer's common stock, no par value per share, ("Common Stock") on a one-for-one basis, subject to any net settlement for taxes permitted under the Plan, upon settlement by the Issuer in accordance with the procedures of the Plan.

F4 · derivative.exercise_date: The conversion of 4,974 vested RSUs reported in Table II relates to the settlement by the Issuer of the vested portion of the 9,949 RSUs granted to the Reporting Person on May 12, 2021, which are eligible to vest in four quarterly installments after the grant date. The conversion of the 30,000 vested PSUs reported in Table II relates to the settlement by the Issuer of vested PSUs awarded to the Reporting Person on August 12, 2021, which vested upon the Issuer's attainment of the specified performance objectives corresponding to 30,000 PRSUs under the Plan.

F4 · derivative.expiration_date: The conversion of 4,974 vested RSUs reported in Table II relates to the settlement by the Issuer of the vested portion of the 9,949 RSUs granted to the Reporting Person on May 12, 2021, which are eligible to vest in four quarterly installments after the grant date. The conversion of the 30,000 vested PSUs reported in Table II relates to the settlement by the Issuer of vested PSUs awarded to the Reporting Person on August 12, 2021, which vested upon the Issuer's attainment of the specified performance objectives corresponding to 30,000 PRSUs under the Plan.

F2 · balance_after: Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.