RIOT

SEC source: 0001079973-21-001027 · ownership.xml · nonDerivative · entry 2

Theriot Lyle Joseph · CIK 0001864143 · see Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,482

F3 · shares: Represents shares of Common Stock withheld for taxes in connection with the settlement by the Issuer following vesting of 4,974 RSUs and 30,000 PSUs previously granted to the Reporting Person 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.

SEC source: 0001079973-21-001027 · ownership.xml · nonDerivative · entry 1

Theriot Lyle Joseph · CIK 0001864143 · see Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 34,974

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 ("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.

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: 0001079973-21-001025 · ownership.xml · derivative · entry 3

Harris Chad Everett · CIK 0001863770 · 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.

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.

SEC source: 0001079973-21-001025 · ownership.xml · nonDerivative · entry 2

Harris Chad Everett · CIK 0001863770 · see Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,482

F3 · shares: Represents shares of Common Stock withheld for taxes in connection with the settlement by the Issuer following vesting of 4,974 RSUs and 30,000 PSUs previously granted to the Reporting Person 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.

SEC source: 0001079973-21-001025 · ownership.xml · nonDerivative · entry 1

Harris Chad Everett · CIK 0001863770 · see Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 34,974

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 ("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.

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: 0001140361-21-030545 · form4.xml · nonDerivative · entry 1

Northern Data AG · CIK 0001863502 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,949,992

F1 · shares: Represents shares of the Issuer's common stock, no par value, sold by such Reporting Person in a secondary public offering as a selling stockholder pursuant to a registration statement on Form S-3 (Registration No. 333-259039), filed with the Securities and Exchange Commission by the Issuer on August 24, 2021.

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

SEC source: 0001140361-21-030368 · form4.xml · nonDerivative · entry 1

Northern Data AG · CIK 0001863502 · 10% owner

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,949,992

F1 · shares: Represents shares of the Issuer's common stock, no par value, sold by such Reporting Person in a secondary public offering as a selling stockholder pursuant to a registration statement on Form S-3 (Registration No. 333-259039), filed with the Securities and Exchange Commission by the Issuer on August 24, 2021.

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

SEC source: 0001079973-21-000805 · ownership.xml · derivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 294,309

Underlying: Common Stock · 41,667 shares

Expires not disclosed

F1 · derivative.exercise_price: Represents performance-based restricted stock units ("PSUs") which covert, on a one-for-one basis, into shares of the Issuer's Common Stock, no par value per share, subject to any net settlement for taxes permitted under the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended (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 Compensation and Human Resources Committee of the Issuer.

F2 · derivative.exercise_date: On August 12, 2021, the Committee determined the performance goals for 41,667 of the PSUs had been achieved. Accordingly, the 41,667 PSUs indicated on this Form 4 became fully vested and eligible to be settled by the Issuer in accordance with its customary practices and procedures, subject to any net settlement for taxes permitted under the Plan and the Award Agreement.

F2 · derivative.expiration_date: On August 12, 2021, the Committee determined the performance goals for 41,667 of the PSUs had been achieved. Accordingly, the 41,667 PSUs indicated on this Form 4 became fully vested and eligible to be settled by the Issuer in accordance with its customary practices and procedures, subject to any net settlement for taxes permitted under 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: 0001079973-21-000803 · ownership.xml · derivative · entry 1

Theriot Lyle Joseph · CIK 0001864143 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 39,949

Underlying: Common Stock · 30,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Represents performance-based restricted stock units ("PSUs") which covert, on a one-for-one basis, into shares of the Issuer's Common Stock, no par value per share, subject to any net settlement for taxes permitted under the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended (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 Compensation and Human Resources Committee of the Issuer.

F2 · price: On August 12, 2021, the Committee determined the performance goals for 30,000 of the PSUs had been achieved. Accordingly, the 30,000 PSUs indicated on this Form 4 became fully vested and eligible to be settled by the Issuer in accordance with its customary practices and procedures, subject to any net settlement for taxes permitted under the Plan and the Award Agreement.

F2 · derivative.exercise_date: On August 12, 2021, the Committee determined the performance goals for 30,000 of the PSUs had been achieved. Accordingly, the 30,000 PSUs indicated on this Form 4 became fully vested and eligible to be settled by the Issuer in accordance with its customary practices and procedures, subject to any net settlement for taxes permitted under the Plan and the Award Agreement.

F2 · derivative.expiration_date: On August 12, 2021, the Committee determined the performance goals for 30,000 of the PSUs had been achieved. Accordingly, the 30,000 PSUs indicated on this Form 4 became fully vested and eligible to be settled by the Issuer in accordance with its customary practices and procedures, subject to any net settlement for taxes permitted under 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: 0001079973-21-000802 · ownership.xml · derivative · entry 1

MCGONEGAL JEFFREY · CIK 0001187604 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 51,667

Underlying: Common Stock · 36,667 shares

Expires not disclosed

F1 · derivative.exercise_price: Represents performance-based restricted stock units ("PSUs") which covert, on a one-for-one basis, into shares of the Issuer's Common Stock, no par value per share, subject to any net settlement for taxes permitted under the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended (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 Compensation and Human Resources Committee of the Issuer.

F2 · price: On August 12, 2021, the Committee determined the performance goals for 36,667 of the PSUs had been achieved. Accordingly, the 36,667 PSUs indicated on this report became fully vested and eligible to be settled by the Issuer in accordance with its customary practices and procedures, subject to any net settlement for taxes permitted under the Plan and the Award Agreement.

F2 · derivative.exercise_date: On August 12, 2021, the Committee determined the performance goals for 36,667 of the PSUs had been achieved. Accordingly, the 36,667 PSUs indicated on this report became fully vested and eligible to be settled by the Issuer in accordance with its customary practices and procedures, subject to any net settlement for taxes permitted under the Plan and the Award Agreement.

F2 · derivative.expiration_date: On August 12, 2021, the Committee determined the performance goals for 36,667 of the PSUs had been achieved. Accordingly, the 36,667 PSUs indicated on this report became fully vested and eligible to be settled by the Issuer in accordance with its customary practices and procedures, subject to any net settlement for taxes permitted under 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: 0001079973-21-000800 · ownership.xml · derivative · entry 1

Les Jason · CIK 0001721702 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 349,034

Underlying: Common Stock · 41,667 shares

Expires not disclosed

F1 · derivative.exercise_price: Represents performance-based restricted stock units ("PSUs") which covert, on a one-for-one basis, into shares of the Issuer's Common Stock, no par value per share, subject to any net settlement for taxes permitted under the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended (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 Compensation and Human Resources Committee of the Issuer.

F2 · price: On August 12, 2021, the Committee determined the performance goals for 41,667 of the PSUs had been achieved. Accordingly, the 41,667 PSUs indicated on this Form 4 became fully vested and eligible to be settled by the Issuer in accordance with its customary practices and procedures, subject to any net settlement for taxes permitted under the Plan and the Award Agreement.

F2 · derivative.exercise_date: On August 12, 2021, the Committee determined the performance goals for 41,667 of the PSUs had been achieved. Accordingly, the 41,667 PSUs indicated on this Form 4 became fully vested and eligible to be settled by the Issuer in accordance with its customary practices and procedures, subject to any net settlement for taxes permitted under the Plan and the Award Agreement.

F2 · derivative.expiration_date: On August 12, 2021, the Committee determined the performance goals for 41,667 of the PSUs had been achieved. Accordingly, the 41,667 PSUs indicated on this Form 4 became fully vested and eligible to be settled by the Issuer in accordance with its customary practices and procedures, subject to any net settlement for taxes permitted under 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: 0001079973-21-000798 · ownership.xml · derivative · entry 1

Jackman William Richard · CIK 0001872927 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 40,630

Underlying: Common Stock · 30,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Represents performance-based restricted stock units ("PSUs") which covert, on a one-for-one basis, into shares of the Issuer's Common Stock, no par value per share, subject to any net settlement for taxes permitted under the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended (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 Compensation and Human Resources Committee of the Issuer.

F2 · price: On August 12, 2021, the Committee determined the performance goals for 30,000 of the PSUs had been achieved. Accordingly, the 30,000 PSUs indicated on this Form 4 became fully vested and eligible to be settled by the Issuer in accordance with its customary practices and procedures, subject to any net settlement for taxes permitted under the Plan and the Award Agreement.

F2 · derivative.exercise_date: On August 12, 2021, the Committee determined the performance goals for 30,000 of the PSUs had been achieved. Accordingly, the 30,000 PSUs indicated on this Form 4 became fully vested and eligible to be settled by the Issuer in accordance with its customary practices and procedures, subject to any net settlement for taxes permitted under the Plan and the Award Agreement.

F2 · derivative.expiration_date: On August 12, 2021, the Committee determined the performance goals for 30,000 of the PSUs had been achieved. Accordingly, the 30,000 PSUs indicated on this Form 4 became fully vested and eligible to be settled by the Issuer in accordance with its customary practices and procedures, subject to any net settlement for taxes permitted under 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: 0001079973-21-000794 · ownership.xml · derivative · entry 1

Brooks Megan M. · CIK 0001855229 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 39,333

Underlying: Common Stock · 33,333 shares

Expires not disclosed

F1 · derivative.exercise_price: Represents performance-based restricted stock units ("PSUs") which covert, on a one-for-one basis, into shares of the Issuer's Common Stock, no par value per share, subject to any net settlement for taxes permitted under the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended (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 Compensation and Human Resources Committee of the Issuer.

F2 · price: On August 12, 2021, the Committee determined the performance goals for 33,333 of the PSUs had been achieved. Accordingly, the 33,333 PSUs indicated on this Form 4 became fully vested and eligible to be settled by the Issuer in accordance with its customary practices and procedures, subject to any net settlement for taxes permitted under the Plan and the Award Agreement.

F2 · derivative.exercise_date: On August 12, 2021, the Committee determined the performance goals for 33,333 of the PSUs had been achieved. Accordingly, the 33,333 PSUs indicated on this Form 4 became fully vested and eligible to be settled by the Issuer in accordance with its customary practices and procedures, subject to any net settlement for taxes permitted under the Plan and the Award Agreement.

F2 · derivative.expiration_date: On August 12, 2021, the Committee determined the performance goals for 33,333 of the PSUs had been achieved. Accordingly, the 33,333 PSUs indicated on this Form 4 became fully vested and eligible to be settled by the Issuer in accordance with its customary practices and procedures, subject to any net settlement for taxes permitted under 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: 0001079973-21-000796 · ownership.xml · derivative · entry 1

Harris Chad Everett · CIK 0001863770 · See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 39,949

Underlying: Common Stock · 30,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Represents performance-based restricted stock units ("PSUs") which covert, on a one-for-one basis, into shares of the Issuer's Common Stock, no par value per share, subject to any net settlement for taxes permitted under the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended (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 Compensation and Human Resources Committee of the Issuer.

F2 · price: On August 12, 2021, the Committee determined the performance goals for 30,000 of the PSUs had been achieved. Accordingly, the 30,000 PSUs indicated on this Form 4 became fully vested and eligible to be settled by the Issuer in accordance with its customary practices and procedures, subject to any net settlement for taxes permitted under the Plan and the Award Agreement.

F2 · derivative.exercise_date: On August 12, 2021, the Committee determined the performance goals for 30,000 of the PSUs had been achieved. Accordingly, the 30,000 PSUs indicated on this Form 4 became fully vested and eligible to be settled by the Issuer in accordance with its customary practices and procedures, subject to any net settlement for taxes permitted under the Plan and the Award Agreement.

F2 · derivative.expiration_date: On August 12, 2021, the Committee determined the performance goals for 30,000 of the PSUs had been achieved. Accordingly, the 30,000 PSUs indicated on this Form 4 became fully vested and eligible to be settled by the Issuer in accordance with its customary practices and procedures, subject to any net settlement for taxes permitted under 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: 0001079973-21-000623 · ownership.xml · derivative · entry 1

Jackman William Richard · CIK 0001872927 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,630

Underlying: Common Stock · 10,630 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 · derivative.exercise_date: On July 15, 2021, the Reporting Person was granted an award of 10,630 RSUs under the Plan pursuant to an equity award agreement between the Issuer and the Reporting Person (the "Award Agreement"). Subject to the terms and conditions set forth in the Award Agreement, these 10,630 RSUs are eligible to vest in four (4) equal quarterly installments of 2,657 RSUs, with the final installment of 2,659 RSUs, on a quarterly basis following the grant date.

F2 · derivative.expiration_date: On July 15, 2021, the Reporting Person was granted an award of 10,630 RSUs under the Plan pursuant to an equity award agreement between the Issuer and the Reporting Person (the "Award Agreement"). Subject to the terms and conditions set forth in the Award Agreement, these 10,630 RSUs are eligible to vest in four (4) equal quarterly installments of 2,657 RSUs, with the final installment of 2,659 RSUs, on a quarterly basis 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: 0001079973-21-000528 · ownership.xml · nonDerivative · entry 3

Les Jason · CIK 0001721702 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 237,777

F4 · price: The price reported in Column 4 is a volume-weighted average price of the Shares of the Issuer sold by the Reporting Person in multiple transactions on the indicated day at prices ranging from $32.44 to $32.59 per Share, inclusive.

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

SEC source: 0001079973-21-000528 · ownership.xml · nonDerivative · entry 2

Les Jason · CIK 0001721702 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 238,478

F3 · price: The price reported in Column 4 is a volume-weighted average price of the Shares of the Issuer sold by the Reporting Person in multiple transactions on the indicated day at prices ranging from $31.44 to $32.43 per Share, inclusive.

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

SEC source: 0001079973-21-000528 · ownership.xml · nonDerivative · entry 1

Les Jason · CIK 0001721702 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 264,622

F1 · price: The price reported in Column 4 is a volume-weighted 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 day at prices ranging from $30.44 per Share, to $31.43 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 (the "Commission"), upon request, full information regarding the number of Shares sold at each separate price within the ranges set forth in footnotes (1), (3), and (4) to this Form 4.

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

SEC source: 0001079973-21-000459 · ownership.xml · derivative · entry 3

MCGONEGAL JEFFREY · CIK 0001187604 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,000

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, as amended, (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.

F4 · price: Pursuant to the First Amendment to the Amended and Restated Executive Employment Agreement between the Issuer and the Reporting Person, dated February 8, 2021 (the "2021 McGonegal Employment Agreement"), the Reporting Person was granted 20,000 RSUs under the Plan as equity compensation, which are eligible to vest in four (4) equal quarterly installments pursuant to and during the term of the 2021 McGonegal Employment Agreement.

F4 · derivative.exercise_date: Pursuant to the First Amendment to the Amended and Restated Executive Employment Agreement between the Issuer and the Reporting Person, dated February 8, 2021 (the "2021 McGonegal Employment Agreement"), the Reporting Person was granted 20,000 RSUs under the Plan as equity compensation, which are eligible to vest in four (4) equal quarterly installments pursuant to and during the term of the 2021 McGonegal Employment Agreement.

F4 · derivative.expiration_date: Pursuant to the First Amendment to the Amended and Restated Executive Employment Agreement between the Issuer and the Reporting Person, dated February 8, 2021 (the "2021 McGonegal Employment Agreement"), the Reporting Person was granted 20,000 RSUs under the Plan as equity compensation, which are eligible to vest in four (4) equal quarterly installments pursuant to and during the term of the 2021 McGonegal Employment Agreement.

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

SEC source: 0001079973-21-000459 · ownership.xml · nonDerivative · entry 2

MCGONEGAL JEFFREY · CIK 0001187604 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 299,367

F3 · shares: Represents net settlement for taxes in connection with the settlement of 5,000 vested RSUs, as permitted under the Plan.

SEC source: 0001079973-21-000459 · ownership.xml · nonDerivative · entry 1

MCGONEGAL JEFFREY · CIK 0001187604 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 300,867

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, as amended, (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.

SEC source: 0001079973-21-000446 · ownership.xml · derivative · entry 1

D'Ambrosio Lance Varro · CIK 0001611745 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,500

Underlying: Common Shares · 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 (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 May 28, 2021, in connection with the Reporting Person's service as a director of the Corporation and upon the satisfaction of the requirements of the applicable award agreement, the Reporting Person was granted an award of 12,500 RSUs under the Plan, with 2,500 RSUs vested immediately as of the grant date, and with the remaining 10,000 RSUs eligible to vest in four (4) equal quarterly installments following the grant date.

F2 · derivative.exercise_date: On May 28, 2021, in connection with the Reporting Person's service as a director of the Corporation and upon the satisfaction of the requirements of the applicable award agreement, the Reporting Person was granted an award of 12,500 RSUs under the Plan, with 2,500 RSUs vested immediately as of the grant date, and with the remaining 10,000 RSUs eligible to vest in four (4) equal quarterly installments following the grant date.

F2 · derivative.expiration_date: On May 28, 2021, in connection with the Reporting Person's service as a director of the Corporation and upon the satisfaction of the requirements of the applicable award agreement, the Reporting Person was granted an award of 12,500 RSUs under the Plan, with 2,500 RSUs vested immediately as of the grant date, and with the remaining 10,000 RSUs eligible to vest in four (4) equal quarterly installments 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: 0001079973-21-000442 · ownership.xml · derivative · entry 1

Theriot Lyle Joseph · CIK 0001864143 · Subsidiary Officer See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,949

Underlying: Common Stock · 9,949 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 on a one-for-one basis upon settlement by the Issuer in accordance with the procedures of the Plan.

F2 · price: On May 26, 2021, the Reporting Person was granted an award of 9,949 RSUs under the Plan pursuant to an equity award agreement between the Issuer and the Reporting Person (the "Award Agreement"). Subject to the terms and conditions set forth in the Award Agreement, these 9,949 RSUs are eligible to vest in four (4) equal quarterly installments following the grant date.

F2 · derivative.exercise_date: On May 26, 2021, the Reporting Person was granted an award of 9,949 RSUs under the Plan pursuant to an equity award agreement between the Issuer and the Reporting Person (the "Award Agreement"). Subject to the terms and conditions set forth in the Award Agreement, these 9,949 RSUs are eligible to vest in four (4) equal quarterly installments following the grant date.

F2 · derivative.expiration_date: On May 26, 2021, the Reporting Person was granted an award of 9,949 RSUs under the Plan pursuant to an equity award agreement between the Issuer and the Reporting Person (the "Award Agreement"). Subject to the terms and conditions set forth in the Award Agreement, these 9,949 RSUs are eligible to vest in four (4) equal quarterly installments 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: 0001079973-21-000438 · ownership.xml · derivative · entry 1

Harris Chad Everett · CIK 0001863770 · Subsidiary Officer See Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,949

Underlying: Common Stock · 9,949 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 on a one-for-one basis upon settlement by the Issuer in accordance with the procedures of the Plan.

F2 · price: On May 26, 2021, the Reporting Person was granted an award of 9,949 RSUs under the Plan pursuant to an equity award agreement between the Issuer and the Reporting Person (the "Award Agreement"). Subject to the terms and conditions set forth in the Award Agreement, these 9,949 RSUs are eligible to vest in four (4) equal quarterly installments following the grant date.

F2 · derivative.exercise_date: On May 26, 2021, the Reporting Person was granted an award of 9,949 RSUs under the Plan pursuant to an equity award agreement between the Issuer and the Reporting Person (the "Award Agreement"). Subject to the terms and conditions set forth in the Award Agreement, these 9,949 RSUs are eligible to vest in four (4) equal quarterly installments following the grant date.

F2 · derivative.expiration_date: On May 26, 2021, the Reporting Person was granted an award of 9,949 RSUs under the Plan pursuant to an equity award agreement between the Issuer and the Reporting Person (the "Award Agreement"). Subject to the terms and conditions set forth in the Award Agreement, these 9,949 RSUs are eligible to vest in four (4) equal quarterly installments 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: 0001079973-21-000422 · ownership.xml · derivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 252,642

Underlying: Common Stock · 15,000 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 May 24, 2021, in connection with the Reporting Person's service as Executive Chairman of the Corporation, the Reporting Person was granted an award of 15,000 RSUs under the Plan, which are eligible to vest in four (4) equal quarterly installments following the grant date.

F2 · derivative.exercise_date: On May 24, 2021, in connection with the Reporting Person's service as Executive Chairman of the Corporation, the Reporting Person was granted an award of 15,000 RSUs under the Plan, which are eligible to vest in four (4) equal quarterly installments following the grant date.

F2 · derivative.expiration_date: On May 24, 2021, in connection with the Reporting Person's service as Executive Chairman of the Corporation, the Reporting Person was granted an award of 15,000 RSUs under the Plan, which are eligible to vest in four (4) equal quarterly installments 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: 0001079973-21-000314 · ownership.xml · derivative · entry 3

Les Jason · CIK 0001721702 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 307,367

Underlying: Common Stock · 6,250 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, as amended (the "Plan") convert 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.

F4 · price: Pursuant to the terms of the Executive Employment Agreement between the Issuer and the Reporting Person, dated effective as of February 8, 2021 (the "Employment Agreement"), the Reporting Person was granted an award of 25,000 RSUs under the Plan, which are eligible to vest in four (4) equal quarterly installments pursuant to and during the term of the Employment Agreement. The transaction reported on this Table II of this Form 4 represents the conversion of the first vested quarterly installment of this RSU award.

F4 · derivative.exercise_date: Pursuant to the terms of the Executive Employment Agreement between the Issuer and the Reporting Person, dated effective as of February 8, 2021 (the "Employment Agreement"), the Reporting Person was granted an award of 25,000 RSUs under the Plan, which are eligible to vest in four (4) equal quarterly installments pursuant to and during the term of the Employment Agreement. The transaction reported on this Table II of this Form 4 represents the conversion of the first vested quarterly installment of this RSU award.

F4 · derivative.expiration_date: Pursuant to the terms of the Executive Employment Agreement between the Issuer and the Reporting Person, dated effective as of February 8, 2021 (the "Employment Agreement"), the Reporting Person was granted an award of 25,000 RSUs under the Plan, which are eligible to vest in four (4) equal quarterly installments pursuant to and during the term of the Employment Agreement. The transaction reported on this Table II of this Form 4 represents the conversion of the first vested quarterly installment of this RSU award.

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

SEC source: 0001079973-21-000314 · ownership.xml · nonDerivative · entry 2

Les Jason · CIK 0001721702 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 287,777

F3 · shares: Represents net settlement for taxes in connection with the settlement of 6,250 vested RSUs, as permitted under the Plan.

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

SEC source: 0001079973-21-000314 · ownership.xml · nonDerivative · entry 1

Les Jason · CIK 0001721702 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 289,652

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, as amended (the "Plan") convert 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 · balance_after: Represents the total direct and indirect ownership of the security held by the Reporting Person immediately following the transaction reported by this Form 4.

SEC source: 0001079973-21-000257 · ownership.xml · derivative · entry 1

Brooks Megan M. · CIK 0001855229 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,000

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') convert 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 April 6, 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"). Subject to the terms and conditions set forth in the Award Agreement, these 6,000 RSUs are eligible to vest in four (4) equal quarterly installments of 1,500 RSUs, commencing 90 days after the grant date.

F2 · derivative.exercise_date: On April 6, 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"). Subject to the terms and conditions set forth in the Award Agreement, these 6,000 RSUs are eligible to vest in four (4) equal quarterly installments of 1,500 RSUs, commencing 90 days after the grant date.

F2 · derivative.expiration_date: On April 6, 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"). Subject to the terms and conditions set forth in the Award Agreement, these 6,000 RSUs are eligible to vest in four (4) equal quarterly installments of 1,500 RSUs, commencing 90 days after 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: 0001079973-21-000114 · ownership.xml · derivative · entry 1

Cho Hannah · CIK 0001846283 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,500

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 (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 February 17, 2021, in connection with the Reporting Person's service as a director of the Corporation and upon the satisfaction of the requirements of the applicable award agreement, the Reporting Person was granted an award of 12,500 RSUs under the Plan, with 2,500 RSUs vested immediately as of the grant date, and with the remaining 10,000 RSUs eligible to vest in four (4) equal installments on the last day of each fiscal quarter following the grant date.

F2 · derivative.exercise_date: On February 17, 2021, in connection with the Reporting Person's service as a director of the Corporation and upon the satisfaction of the requirements of the applicable award agreement, the Reporting Person was granted an award of 12,500 RSUs under the Plan, with 2,500 RSUs vested immediately as of the grant date, and with the remaining 10,000 RSUs eligible to vest in four (4) equal installments on the last day of each fiscal quarter following the grant date.

F2 · derivative.expiration_date: On February 17, 2021, in connection with the Reporting Person's service as a director of the Corporation and upon the satisfaction of the requirements of the applicable award agreement, the Reporting Person was granted an award of 12,500 RSUs under the Plan, with 2,500 RSUs vested immediately as of the grant date, and with the remaining 10,000 RSUs eligible to vest in four (4) equal installments on the last day of each fiscal quarter 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: 0001079973-21-000086 · ownership.xml · derivative · entry 1

YI SOO IL BENJAMIN · CIK 0001757880 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 237,642

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 on a one-for-one basis upon settlement by the Issuer in accordance with the procedures of the Plan.

F2 · price: On February 9, 2021, in connection with the Reporting Person's service as a director of the Corporation, the Reporting Person was granted an award of 10,000 RSUs under the Plan, which are eligible to vest in four (4) equal installments on the last day of each fiscal quarter following the grant date.

F2 · derivative.exercise_date: On February 9, 2021, in connection with the Reporting Person's service as a director of the Corporation, the Reporting Person was granted an award of 10,000 RSUs under the Plan, which are eligible to vest in four (4) equal installments on the last day of each fiscal quarter following the grant date.

F2 · derivative.expiration_date: On February 9, 2021, in connection with the Reporting Person's service as a director of the Corporation, the Reporting Person was granted an award of 10,000 RSUs under the Plan, which are eligible to vest in four (4) equal installments on the last day of each fiscal quarter 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: 0001079973-21-000084 · ownership.xml · derivative · entry 1

Marleau Hubert · CIK 0001833575 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,500

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 (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 February 9, 2021, in connection with the Reporting Person's service as a director of the Corporation, the Reporting Person was granted an award of 12,500 RSUs under the Plan, with 2,500 RSUs vested immediately as of the grant date, and with the remaining 10,000 RSUs eligible to vest in four (4) equal installments as of the last day of each fiscal quarter following the grant date.

F2 · derivative.exercise_date: On February 9, 2021, in connection with the Reporting Person's service as a director of the Corporation, the Reporting Person was granted an award of 12,500 RSUs under the Plan, with 2,500 RSUs vested immediately as of the grant date, and with the remaining 10,000 RSUs eligible to vest in four (4) equal installments as of the last day of each fiscal quarter following the grant date.

F2 · derivative.expiration_date: On February 9, 2021, in connection with the Reporting Person's service as a director of the Corporation, the Reporting Person was granted an award of 12,500 RSUs under the Plan, with 2,500 RSUs vested immediately as of the grant date, and with the remaining 10,000 RSUs eligible to vest in four (4) equal installments as of the last day of each fiscal quarter 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: 0001079973-21-000080 · ownership.xml · derivative · entry 4

MCGONEGAL JEFFREY · CIK 0001187604 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 32,000

Underlying: Common Stock · 20,000 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.

F5 · price: Pursuant to the First Amendment to the Amended and Restated Executive Employment Agreement between the Issuer and the Reporting Person, dated February 8, 2021 (the "2021 Employment Agreement"), the Reporting Person was granted 20,000 RSUs under the Plan, which are eligible to vest in four (4) equal quarterly installments pursuant to and during the term of the 2021 Employment Agreement.

F5 · derivative.exercise_date: Pursuant to the First Amendment to the Amended and Restated Executive Employment Agreement between the Issuer and the Reporting Person, dated February 8, 2021 (the "2021 Employment Agreement"), the Reporting Person was granted 20,000 RSUs under the Plan, which are eligible to vest in four (4) equal quarterly installments pursuant to and during the term of the 2021 Employment Agreement.

F5 · derivative.expiration_date: Pursuant to the First Amendment to the Amended and Restated Executive Employment Agreement between the Issuer and the Reporting Person, dated February 8, 2021 (the "2021 Employment Agreement"), the Reporting Person was granted 20,000 RSUs under the Plan, which are eligible to vest in four (4) equal quarterly installments pursuant to and during the term of the 2021 Employment Agreement.

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

SEC source: 0001079973-21-000080 · ownership.xml · derivative · entry 3

MCGONEGAL JEFFREY · CIK 0001187604 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,000

Underlying: Common Stock · 104,895 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 on a one-for-one basis upon settlement by the Issuer in accordance with the procedures of the Plan.

F4 · price: Pursuant to the Amended and Restated Executive Employment Agreement between the Reporting Person and the Issuer dated as of February 7, 2020 (the "2020 Employment Agreement"), the Reporting Person received an award of 209,790 RSUs under the Plan, which vested in four (4) equal quarterly installments pursuant to and during the term of the 2020 Employment Agreement.

F4 · derivative.exercise_date: Pursuant to the Amended and Restated Executive Employment Agreement between the Reporting Person and the Issuer dated as of February 7, 2020 (the "2020 Employment Agreement"), the Reporting Person received an award of 209,790 RSUs under the Plan, which vested in four (4) equal quarterly installments pursuant to and during the term of the 2020 Employment Agreement.

F4 · derivative.expiration_date: Pursuant to the Amended and Restated Executive Employment Agreement between the Reporting Person and the Issuer dated as of February 7, 2020 (the "2020 Employment Agreement"), the Reporting Person received an award of 209,790 RSUs under the Plan, which vested in four (4) equal quarterly installments pursuant to and during the term of the 2020 Employment Agreement.

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

SEC source: 0001079973-21-000080 · ownership.xml · nonDerivative · entry 2

MCGONEGAL JEFFREY · CIK 0001187604 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 295,867

F3 · shares: Represents net settlement for taxes in connection with the settlement of 104,895 vested RSUs, as permitted under the Plan.

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

SEC source: 0001079973-21-000080 · ownership.xml · nonDerivative · entry 1

MCGONEGAL JEFFREY · CIK 0001187604 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 327,336

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 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 security held by the Reporting Person immediately following the transaction reported by this Form 4.

SEC source: 0001079973-21-000082 · ownership.xml · derivative · entry 1

Les Jason · CIK 0001721702 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 313,617

Underlying: Common Stock · 25,000 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: Pursuant to the terms of the Executive Employment Agreement between the Issuer and the Reporting Person, dated effective as of February 8, 2021 (the "Employment Agreement"), the Reporting Person was granted an award of 25,000 RSUs under the Plan, which are eligible to vest in four (4) equal quarterly installments pursuant to and during the term of the Employment Agreement.

F2 · derivative.exercise_date: Pursuant to the terms of the Executive Employment Agreement between the Issuer and the Reporting Person, dated effective as of February 8, 2021 (the "Employment Agreement"), the Reporting Person was granted an award of 25,000 RSUs under the Plan, which are eligible to vest in four (4) equal quarterly installments pursuant to and during the term of the Employment Agreement.

F2 · derivative.expiration_date: Pursuant to the terms of the Executive Employment Agreement between the Issuer and the Reporting Person, dated effective as of February 8, 2021 (the "Employment Agreement"), the Reporting Person was granted an award of 25,000 RSUs under the Plan, which are eligible to vest in four (4) equal quarterly installments pursuant to and during the term of the Employment Agreement.

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

SEC source: 0001553350-20-001060 · ownership.xml · nonDerivative · entry 2

Les Jason · CIK 0001721702 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 283,402

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

SEC source: 0001553350-20-001060 · ownership.xml · nonDerivative · entry 1

Les Jason · CIK 0001721702 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 286,402

SEC source: 0001553350-20-001062 · ownership.xml · nonDerivative · entry 3

YI SOO IL BENJAMIN · CIK 0001757880 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,500

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

SEC source: 0001553350-20-001062 · ownership.xml · nonDerivative · entry 2

YI SOO IL BENJAMIN · CIK 0001757880 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 23,000

SEC source: 0001553350-20-001062 · ownership.xml · nonDerivative · entry 1

YI SOO IL BENJAMIN · CIK 0001757880 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 93,000

SEC source: 0001079973-20-001011 · ownership.xml · derivative · entry 2

Mancini Remo · CIK 0001733104 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock, no par value · 471,544 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") are settled in shares of Issuer's Common Stock, no par value, on a one-for-one basis.

F2 · derivative.exercise_date: On February 27, 2020, Issuer granted the reporting person 471,544 RSUs, vesting as of March 1, 2021, under the Issuer's 2019 Equity Incentive Plan (the "Plan") in connection with the reporting person's service on the Issuer's Board of Directors. In connection with the reporting person's resignation from the Issuer's Board of Directors, the Plan administrator, as permitted under the Plan, accelerated the vesting schedule to the Reporting Person's resignation date, November 16, 2020.

F2 · derivative.expiration_date: On February 27, 2020, Issuer granted the reporting person 471,544 RSUs, vesting as of March 1, 2021, under the Issuer's 2019 Equity Incentive Plan (the "Plan") in connection with the reporting person's service on the Issuer's Board of Directors. In connection with the reporting person's resignation from the Issuer's Board of Directors, the Plan administrator, as permitted under the Plan, accelerated the vesting schedule to the Reporting Person's resignation date, November 16, 2020.

SEC source: 0001079973-20-001011 · ownership.xml · nonDerivative · entry 1

Mancini Remo · CIK 0001733104 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 471,544

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") are settled in shares of Issuer's Common Stock, no par value, on a one-for-one basis.

SEC source: 0001553350-20-000832 · ownership.xml · nonDerivative · entry 1

YI SOO IL BENJAMIN · CIK 0001757880 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 163,000

SEC source: 0001079973-20-000766 · ownership.xml · derivative · entry 3

MCGONEGAL JEFFREY · CIK 0001187604 · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 116,895

Underlying: Common Stock · 104,895 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") convert into shares of the Issuer's Common Stock, no par value, on a one-for-one basis upon settlement by the Issuer.

F3 · derivative.exercise_date: Pursuant to the Amended and Restated Executive Employment Agreement by and between the Reporting Person and the Issuer dated as of February 7, 2020 (the "Employment Agreement"), on February 7, 2020, the Reporting Person was granted 209,790 RSUs under the Plan, which vest in four equal quarterly installments during the term of the Employment Agreement. Accordingly, after the settlement of 104,895 vested RSUs into shares of the Issuer's Common Stock, 104,895 RSUs granted to the Reporting Person by the Issuer remain outstanding and subject to the vesting schedule and the other terms and conditions of the Employment Agreement.

F3 · derivative.expiration_date: Pursuant to the Amended and Restated Executive Employment Agreement by and between the Reporting Person and the Issuer dated as of February 7, 2020 (the "Employment Agreement"), on February 7, 2020, the Reporting Person was granted 209,790 RSUs under the Plan, which vest in four equal quarterly installments during the term of the Employment Agreement. Accordingly, after the settlement of 104,895 vested RSUs into shares of the Issuer's Common Stock, 104,895 RSUs granted to the Reporting Person by the Issuer remain outstanding and subject to the vesting schedule and the other terms and conditions of the Employment Agreement.

SEC source: 0001079973-20-000766 · ownership.xml · nonDerivative · entry 2

MCGONEGAL JEFFREY · CIK 0001187604 · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 222,441

F2 · shares: Represents net settlement for taxes in connection with the settlement of 104,895 vested RSUs, as permitted under the Plan.

SEC source: 0001079973-20-000766 · ownership.xml · nonDerivative · entry 1

MCGONEGAL JEFFREY · CIK 0001187604 · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 253,910

F1 · price: Vested Restricted Stock Units ("RSUs") granted under the Riot Blockchain, Inc. 2019 Equity Incentive Plan (the "Plan") convert into shares of the Issuer's Common Stock, no par value, on a one-for-one basis upon settlement by the Issuer.

SEC source: 0001079973-20-000423 · ownership.xml · derivative · entry 3

YI SOO IL BENJAMIN · CIK 0001757880 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 227,642

Underlying: Common Stock, no par value · 276,090 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: Restricted Stock Units convert into shares of Issuer's Common Stock, no par value, on a one-for-one basis upon settlement by the Issuer.

F1 · price: Restricted Stock Units convert into shares of Issuer's Common Stock, no par value, on a one-for-one basis upon settlement by the Issuer.

F3 · derivative.exercise_date: On December 16, 2019, the Reporting Person was granted 276,090 RSUs pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, 100% of which vested on March 31, 2020.

F3 · derivative.expiration_date: On December 16, 2019, the Reporting Person was granted 276,090 RSUs pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, 100% of which vested on March 31, 2020.

SEC source: 0001079973-20-000423 · ownership.xml · nonDerivative · entry 2

YI SOO IL BENJAMIN · CIK 0001757880 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 207,068

F2 · shares: Represents net settlement for taxes in connection with the settlement of vested Restricted Stock Units.