RIOT

SEC source: 0001079973-22-000398 · ownership.xml · nonDerivative · entry 1

Marleau Hubert · CIK 0001833575 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

F1 · shares: The sale reported on this Form 4 was made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 9, 2021.

SEC source: 0001079973-22-000305 · ownership.xml · derivative · entry 3

Jackman William Richard · CIK 0001872927 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 41,321

Underlying: Common Stock · 2,658 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, 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 · 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 as of the grant date, July 15, 2021, as compensation under the executive employment agreement between the Reporting Person and the Issuer dated as of the grant date. These 10,630 RSUs were granted pursuant to an equity award agreement between the Issuer and the Reporting Person and the Issuer dated as of the grant date, and are eligible to vest in four equal quarterly installments following the grant date.

F4 · 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 as of the grant date, July 15, 2021, as compensation under the executive employment agreement between the Reporting Person and the Issuer dated as of the grant date. These 10,630 RSUs were granted pursuant to an equity award agreement between the Issuer and the Reporting Person and the Issuer dated as of the grant date, and are eligible to vest in four equal quarterly installments following the grant date.

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

SEC source: 0001079973-22-000305 · ownership.xml · nonDerivative · entry 2

Jackman William Richard · CIK 0001872927 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,789

F3 · shares: Represents net settlement in connection with the conversion of 2,658 vested RSUs on a one-for-one basis 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 indicated security held by the Reporting Person immediately following the reported transaction.

SEC source: 0001079973-22-000305 · ownership.xml · nonDerivative · entry 1

Jackman William Richard · CIK 0001872927 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 25,852

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 indicated security held by the Reporting Person immediately following the reported transaction.

SEC source: 0001079973-22-000307 · ownership.xml · derivative · entry 2

Marleau Hubert · CIK 0001833575 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,500

Underlying: Common Stock · 2,500 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.

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, 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.

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 2,500 vested RSUs reported in Table II relates to the settlement by the Issuer of the final tranche of the 12,500 RSUs granted to the Reporting Person under the Plan as of the grant date, February 9, 2021 as compensation for the Reporting Person's service as a member of the Issuer's Board of Directors for Fiscal Year 2021. Of these 12,500 RSUs, 2,500 RSUs vested as of the grant date, and the remaining 10,000 RSUs vested in four quarterly installments of 2,500 RSUs after the grant date.

F3 · derivative.expiration_date: The conversion of 2,500 vested RSUs reported in Table II relates to the settlement by the Issuer of the final tranche of the 12,500 RSUs granted to the Reporting Person under the Plan as of the grant date, February 9, 2021 as compensation for the Reporting Person's service as a member of the Issuer's Board of Directors for Fiscal Year 2021. Of these 12,500 RSUs, 2,500 RSUs vested as of the grant date, and the remaining 10,000 RSUs vested in four quarterly installments of 2,500 RSUs 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: 0001079973-22-000307 · ownership.xml · nonDerivative · entry 1

Marleau Hubert · CIK 0001833575 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,500

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: 0001079973-22-000303 · ownership.xml · derivative · entry 2

D'Ambrosio Lance Varro · CIK 0001611745 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 17,500

Underlying: Common Stock · 2,500 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.

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 2,500 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 as of the grant date, May 28, 2021 as compensation for the Reporting Person's service as a member of the Issuer's Board of Directors for Fiscal Year 2021. Of these 12,500 RSUs, 2,500 RSUs vested immediately as of the grant date, with the remaining 10,000 RSUs eligible to vest in four quarterly installments of 2,500 RSUs after the grant date.

F3 · derivative.expiration_date: The conversion of 2,500 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 as of the grant date, May 28, 2021 as compensation for the Reporting Person's service as a member of the Issuer's Board of Directors for Fiscal Year 2021. Of these 12,500 RSUs, 2,500 RSUs vested immediately as of the grant date, with the remaining 10,000 RSUs eligible to vest in four quarterly installments of 2,500 RSUs 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: 0001079973-22-000303 · ownership.xml · nonDerivative · entry 1

D'Ambrosio Lance Varro · CIK 0001611745 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,500

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 · shares: 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 transaction.

SEC source: 0001079973-22-000301 · ownership.xml · derivative · entry 3

Cho Hannah · CIK 0001846283 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,500

Underlying: Common Stock · 2,500 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, 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 · derivative.exercise_date: The conversion of 2,500 vested RSUs reported in Table II relates to the settlement by the Issuer of the final tranche of the 12,500 RSUs granted to the Reporting Person under the Plan as of the grant date, February 17, 2021 as compensation for the Reporting Person's service as a member of the Issuer's Board of Directors for Fiscal Year 2021. Of these 12,500 RSUs, 2,500 RSUs vested as of the grant date, and the remaining 10,000 RSUs vested in four quarterly installments of 2,500 RSUs after the grant date.

F4 · derivative.expiration_date: The conversion of 2,500 vested RSUs reported in Table II relates to the settlement by the Issuer of the final tranche of the 12,500 RSUs granted to the Reporting Person under the Plan as of the grant date, February 17, 2021 as compensation for the Reporting Person's service as a member of the Issuer's Board of Directors for Fiscal Year 2021. Of these 12,500 RSUs, 2,500 RSUs vested as of the grant date, and the remaining 10,000 RSUs vested in four quarterly installments of 2,500 RSUs after the grant date.

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

SEC source: 0001079973-22-000301 · ownership.xml · nonDerivative · entry 2

Cho Hannah · CIK 0001846283 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,250

F3 · shares: Represents net settlement in connection with the conversion of 2,500 vested RSUs on a one-for-one basis 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 indicated security held by the Reporting Person immediately following the reported transaction.

SEC source: 0001079973-22-000301 · ownership.xml · nonDerivative · entry 1

Cho Hannah · CIK 0001846283 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,500

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 indicated security held by the Reporting Person immediately following the reported transaction.

SEC source: 0001079973-22-000328 · ownership.xml · nonDerivative · entry 1

Marleau Hubert · CIK 0001833575 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,500

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

F1 · balance_after: This Form 4/A is being filed solely to correct an administrative error on the original Form 4 report filed on March 18, 2022 (the "Original Form 4"), which incorrectly reported the Reporting Person's beneficial ownership of shares of the Issuer's Common Stock following the conversion of 2,500 vested restricted stock units ("RSUs") into 2,500 shares of the Issuer's Common Stock.

F2 · balance_after: Represents the correct total direct and indirect ownership of the indicated security of the Issuer held by the Reporting Person following the reported conversion of 2,500 vested RSUs as of March 16, 2022.

SEC source: 0001079973-22-000181 · ownership.xml · derivative · entry 6

Les Jason · CIK 0001721702 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 248,892 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 · 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: Represents the settlement by the Issuer of the following vested time-based RSU awards granted to the Reporting Person under the Plan: (i) 288,617 RSUs granted on February 27, 2020, as compensation for the Reporting Person's service as a member of the Issuer's Board of Directors for Fiscal Years 2019 and 2020, which vested and became eligible for settlement as of February 15, 2022; (ii) 25,000 RSUs granted on February 8, 2021, pursuant to the Reporting Person's Executive Employment Agreement with the Issuer, which vested in equal quarterly intervals following the grant date.

F6 · derivative.expiration_date: Represents the settlement by the Issuer of the following vested time-based RSU awards granted to the Reporting Person under the Plan: (i) 288,617 RSUs granted on February 27, 2020, as compensation for the Reporting Person's service as a member of the Issuer's Board of Directors for Fiscal Years 2019 and 2020, which vested and became eligible for settlement as of February 15, 2022; (ii) 25,000 RSUs granted on February 8, 2021, pursuant to the Reporting Person's Executive Employment Agreement with the Issuer, which vested in equal quarterly intervals following the grant date.

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

SEC source: 0001079973-22-000181 · ownership.xml · derivative · entry 5

Les Jason · CIK 0001721702 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 244,867

Underlying: Common Stock · 100,000 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 · 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: Represents the settlement for taxes by the Issuer of 100,000 vested performance-based RSUs, which vested upon the Committee's certification of the Issuer's achievement of certain of the performance objectives detailed in the August 12, 2021 performance-based equity award agreement between the Reporting Person and the Issuer.

F5 · derivative.expiration_date: Represents the settlement for taxes by the Issuer of 100,000 vested performance-based RSUs, which vested upon the Committee's certification of the Issuer's achievement of certain of the performance objectives detailed in the August 12, 2021 performance-based equity award agreement between the Reporting Person and the Issuer.

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

SEC source: 0001079973-22-000181 · ownership.xml · nonDerivative · entry 4

Les Jason · CIK 0001721702 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Indirect · See Footnote

Disclosed balance after: 438,461

F4 · shares: Represents net settlement in connection with the conversion of vested RSUs into shares of the Issuer's Common Stock based on the price per share of the Issuer's Common Stock as of the conversion, as permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (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: 0001079973-22-000181 · 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: 560,894

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") awarded to the Reporting Person as compensation 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 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.

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: 0001079973-22-000181 · 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: 316,027

F4 · shares: Represents net settlement in connection with the conversion of vested RSUs into shares of the Issuer's Common Stock based on the price per share of the Issuer's Common Stock as of the conversion, as permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (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: 0001079973-22-000181 · 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: 366,027

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") awarded to the Reporting Person as compensation 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 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.

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: 0001079973-22-000183 · ownership.xml · derivative · entry 6

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,750

Underlying: Common Stock · 248,892 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") awarded to the Reporting Person as compensation 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 permitted under the Plan, upon settlement by the Issuer in accordance with the procedures of the Plan.

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: Represents the settlement by the Issuer of the following vested time-based RSU awards granted to the Reporting Person under the Plan: (i) 227,642 RSUs granted on February 27, 2020, as compensation for the Reporting Person's service as a member of the Issuer's Board of Directors for Fiscal Years 2019 and 2020, which vested and became eligible for settlement as of February 15, 2022; (ii) 10,000 RSUs granted on February 9, 2021, as compensation for the Reporting Person's service as a member of the Issuer's Board of Directors for Fiscal Year 2021, which vested in equal quarterly intervals following the grant date; and (iii) 11,250 RSUs, representing the vested portion of the 15,000 RSUs granted on May 24, 2021 pursuant to the Reporting Person's Executive Employment Agreement with the Issuer, which vest in equal quarterly intervals following the grant date.

F5 · derivative.expiration_date: Represents the settlement by the Issuer of the following vested time-based RSU awards granted to the Reporting Person under the Plan: (i) 227,642 RSUs granted on February 27, 2020, as compensation for the Reporting Person's service as a member of the Issuer's Board of Directors for Fiscal Years 2019 and 2020, which vested and became eligible for settlement as of February 15, 2022; (ii) 10,000 RSUs granted on February 9, 2021, as compensation for the Reporting Person's service as a member of the Issuer's Board of Directors for Fiscal Year 2021, which vested in equal quarterly intervals following the grant date; and (iii) 11,250 RSUs, representing the vested portion of the 15,000 RSUs granted on May 24, 2021 pursuant to the Reporting Person's Executive Employment Agreement with the Issuer, which vest in equal quarterly intervals following the grant date.

F3 · balance_after: Represents net settlement in connection with the conversion of vested RSUs into shares of the Issuer's Common Stock based on the price per share of the Issuer's Common Stock as of the conversion, as permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee").

SEC source: 0001079973-22-000183 · ownership.xml · derivative · entry 5

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 252,642

Underlying: Common Stock · 100,000 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") awarded to the Reporting Person as compensation 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 permitted under the Plan, upon settlement by the Issuer in accordance with the procedures of the Plan.

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: Represents the settlement by the Issuer of 100,000 vested performance-based RSUs, which vested upon the Committee's certification of the Issuer's achievement of certain of the performance objectives detailed in the August 12, 2021 performance-based equity award agreement between the Reporting Person and the Issuer.

F4 · derivative.expiration_date: Represents the settlement by the Issuer of 100,000 vested performance-based RSUs, which vested upon the Committee's certification of the Issuer's achievement of certain of the performance objectives detailed in the August 12, 2021 performance-based equity award agreement between the Reporting Person and the Issuer.

F3 · balance_after: Represents net settlement in connection with the conversion of vested RSUs into shares of the Issuer's Common Stock based on the price per share of the Issuer's Common Stock as of the conversion, as permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee").

SEC source: 0001079973-22-000183 · ownership.xml · nonDerivative · entry 4

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 190,946

F3 · shares: Represents net settlement in connection with the conversion of vested RSUs into shares of the Issuer's Common Stock based on the price per share of the Issuer's Common Stock as of the conversion, as permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (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: 0001079973-22-000183 · ownership.xml · nonDerivative · entry 3

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 315,392

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") awarded to the Reporting Person as compensation 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 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: 0001079973-22-000183 · ownership.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 66,500

F1 · shares: Vested Restricted Stock Units ("RSUs") awarded to the Reporting Person as compensation 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 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: 0001079973-22-000183 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 116,500

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") awarded to the Reporting Person as compensation 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 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: 0001079973-22-000179 · ownership.xml · derivative · entry 6

Brooks Megan M. · CIK 0001855229 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,000

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.

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: Represents the settlement by the Issuer the vested portion of the 6,000 time-based RSUs granted to the Reporting Person under the Plan on April 6, 2021, pursuant to the Reporting Person's Executive Employment Agreement with the Issuer, which vested in equal quarterly intervals following the grant date, and the 6,000 time-based RSUs granted to the Reporting Person on November 11, 2021 pursuant to an amendment to the Reporting Person's Executive Employment Agreement with the Issuer.

F5 · derivative.expiration_date: Represents the settlement by the Issuer the vested portion of the 6,000 time-based RSUs granted to the Reporting Person under the Plan on April 6, 2021, pursuant to the Reporting Person's Executive Employment Agreement with the Issuer, which vested in equal quarterly intervals following the grant date, and the 6,000 time-based RSUs granted to the Reporting Person on November 11, 2021 pursuant to an amendment to the Reporting Person's Executive Employment Agreement with the Issuer.

F3 · balance_after: Represents net settlement in connection with the conversion of vested RSUs into shares of the Issuer's Common Stock based on the price per share of the Issuer's Common Stock as of the conversion, as permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee").

SEC source: 0001079973-22-000179 · ownership.xml · derivative · entry 5

Brooks Megan M. · CIK 0001855229 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,000

Underlying: Common Stock · 40,000 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 · 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: Represents the settlement by the Issuer of 40,000 vested performance-based RSUs, which vested upon the Committee's certification of the Issuer's achievement of certain of the performance objectives detailed in the August 12, 2021 performance-based equity award agreement between the Reporting Person and the Issuer.

F4 · derivative.expiration_date: Represents the settlement by the Issuer of 40,000 vested performance-based RSUs, which vested upon the Committee's certification of the Issuer's achievement of certain of the performance objectives detailed in the August 12, 2021 performance-based equity award agreement between the Reporting Person and the Issuer.

F3 · balance_after: Represents net settlement in connection with the conversion of vested RSUs into shares of the Issuer's Common Stock based on the price per share of the Issuer's Common Stock as of the conversion, as permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (the "Committee").

SEC source: 0001079973-22-000179 · ownership.xml · nonDerivative · entry 4

Brooks Megan M. · CIK 0001855229 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 99,562

F3 · shares: Represents net settlement in connection with the conversion of vested RSUs into shares of the Issuer's Common Stock based on the price per share of the Issuer's Common Stock as of the conversion, as permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (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: 0001079973-22-000179 · ownership.xml · nonDerivative · entry 3

Brooks Megan M. · CIK 0001855229 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 100,462

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: Vested Restricted Stock Units ("RSUs") awarded to the Reporting Person as compensation 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 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: 0001079973-22-000179 · ownership.xml · nonDerivative · entry 2

Brooks Megan M. · CIK 0001855229 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 97,462

F3 · shares: Represents net settlement in connection with the conversion of vested RSUs into shares of the Issuer's Common Stock based on the price per share of the Issuer's Common Stock as of the conversion, as permitted under the Plan and approved by the Issuer's Compensation and Human Resources Committee (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: 0001079973-22-000179 · ownership.xml · nonDerivative · entry 1

Brooks Megan M. · CIK 0001855229 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 109,462

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: Vested Restricted Stock Units ("RSUs") awarded to the Reporting Person as compensation 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 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: 0001079973-22-000090 · ownership.xml · derivative · entry 7

Theriot Lyle Joseph · CIK 0001864143 · see Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,488

Underlying: Common Stock · 2,487 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 ("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.

F7 · derivative.exercise_date: The conversion of 2,487 vested RSUs reported in Table II relates to the settlement by the Issuer of the remaining unsettled portion of the 2,487 RSUs granted to the Reporting Person on April 6, 2021, which vested in four quarterly installments after the grant date.

F7 · derivative.expiration_date: The conversion of 2,487 vested RSUs reported in Table II relates to the settlement by the Issuer of the remaining unsettled portion of the 2,487 RSUs granted to the Reporting Person on April 6, 2021, which vested 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: 0001079973-22-000090 · ownership.xml · derivative · entry 6

Theriot Lyle Joseph · CIK 0001864143 · see Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,975

Underlying: Common Stock · 42,000 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 ("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.

F6 · derivative.exercise_date: The conversion of 42,000 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 42,000 of the PSUs granted to the Reporting Person had been achieved.

F6 · derivative.expiration_date: The conversion of 42,000 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 42,000 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: 0001079973-22-000090 · ownership.xml · nonDerivative · entry 4

Theriot Lyle Joseph · CIK 0001864143 · see Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,623

F4 · shares: Represents shares of Common Stock withheld for taxes in connection with the settlement by the Issuer following vesting of 2,487 RSUs 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: 0001079973-22-000090 · ownership.xml · nonDerivative · entry 3

Theriot Lyle Joseph · CIK 0001864143 · see Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 56,369

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: 0001079973-22-000090 · ownership.xml · nonDerivative · entry 2

Theriot Lyle Joseph · CIK 0001864143 · see Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 53,882

F3 · shares: Represents shares of Common Stock withheld for taxes in connection with the settlement by the Issuer following vesting of 42,000 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: 0001079973-22-000090 · ownership.xml · nonDerivative · entry 1

Theriot Lyle Joseph · CIK 0001864143 · see Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 66,482

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: 0001079973-22-000092 · ownership.xml · derivative · entry 1

Jackman William Richard · CIK 0001872927 · General Counsel

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 43,973

Underlying: Common Stock · 36,000 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.

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 Reporting Person was granted PSUs, which are eligible vest contingent upon the Issuer's achievement of certain perrformance criteria during the performance period ending on December 31, 2023. The Committee determined that, as of December 31, 2021, the performance criteria corresponding to 36,000 PSUs had been achieved. Accordingly, the 36,000 PSUs reported on this Form 4 became vested and eligible to be settled by the Issuer as restricted stock units in accordance with the Plan.

F2 · derivative.expiration_date: On August 12, 2021, the Reporting Person was granted PSUs, which are eligible vest contingent upon the Issuer's achievement of certain perrformance criteria during the performance period ending on December 31, 2023. The Committee determined that, as of December 31, 2021, the performance criteria corresponding to 36,000 PSUs had been achieved. Accordingly, the 36,000 PSUs reported on this Form 4 became vested and eligible to be settled by the Issuer as restricted stock units in accordance with the Plan.

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: 0001079973-22-000087 · ownership.xml · derivative · entry 7

Harris Chad Everett · CIK 0001863770 · see Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,488

Underlying: Common Stock · 2,487 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.

F6 · derivative.exercise_date: The conversion of 2,487 vested RSUs reported in Table II relates to the settlement by the Issuer of the remaining unsettled portion of the 2,487 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 2,487 vested RSUs reported in Table II relates to the settlement by the Issuer of the remaining unsettled portion of the 2,487 RSUs granted to the Reporting Person on April 6, 2021, which vested 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: 0001079973-22-000087 · ownership.xml · derivative · entry 6

Harris Chad Everett · CIK 0001863770 · see Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,975

Underlying: Common Stock · 42,000 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 ("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.

F5 · derivative.exercise_date: The conversion of 42,000 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 42,000 of the PSUs granted to the Reporting Person had been achieved.

F5 · derivative.expiration_date: The conversion of 42,000 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 42,000 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: 0001079973-22-000087 · ownership.xml · derivative · entry 5

Harris Chad Everett · CIK 0001863770 · see Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 44,487

Underlying: Common Stock · 36,000 shares

Expires not disclosed

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: On August 12, 2021, the Reporting Person was granted PSUs, which are eligible to vest contingent upon the Issuer's achievement of certain performance criteria during the performance period ending on December 31, 2023. The Committee determined that, as of December 31, 2021, the performance criteria corresponding to 36,000 PSUs had been achieved. Accordingly, the 36,000 PSUs reported on this Form 4 became vested and eligible to be settled by the Issuer as restricted stock units in accordance with the Plan.

F4 · derivative.expiration_date: On August 12, 2021, the Reporting Person was granted PSUs, which are eligible to vest contingent upon the Issuer's achievement of certain performance criteria during the performance period ending on December 31, 2023. The Committee determined that, as of December 31, 2021, the performance criteria corresponding to 36,000 PSUs had been achieved. Accordingly, the 36,000 PSUs reported on this Form 4 became vested and eligible to be settled by the Issuer as restricted stock units in accordance with 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: 0001079973-22-000087 · ownership.xml · nonDerivative · entry 4

Harris Chad Everett · CIK 0001863770 · see Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 55,623

F3 · shares: Represents shares of Common Stock withheld for taxes in connection with the settlement by the Issuer following vesting of 2,487 RSUs 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: 0001079973-22-000087 · ownership.xml · nonDerivative · entry 3

Harris Chad Everett · CIK 0001863770 · see Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 56,369

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: 0001079973-22-000087 · ownership.xml · nonDerivative · entry 2

Harris Chad Everett · CIK 0001863770 · see Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 53,882

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

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: 0001079973-22-000087 · ownership.xml · nonDerivative · entry 1

Harris Chad Everett · CIK 0001863770 · see Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 66,482

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: 0001079973-22-000090 · ownership.xml · derivative · entry 5

Theriot Lyle Joseph · CIK 0001864143 · see Remarks

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 46,975

Underlying: Common Stock · 36,000 shares

Expires not disclosed

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.

F5 · derivative.exercise_date: On August 12, 2021, the Reporting Person was granted PSUs, which are eligible to vest contingent upon the Issuer's achievement of certain performance criteria during the performance period ending on December 31, 2023. The Committee determined that, as of December 31, 2021, the performance criteria corresponding to 36,000 PSUs had been achieved. Accordingly, the 36,000 PSUs reported on this Form 4 became vested and eligible to be settled by the Issuer as restricted stock units in accordance with the Plan.

F5 · derivative.expiration_date: On August 12, 2021, the Reporting Person was granted PSUs, which are eligible to vest contingent upon the Issuer's achievement of certain performance criteria during the performance period ending on December 31, 2023. The Committee determined that, as of December 31, 2021, the performance criteria corresponding to 36,000 PSUs had been achieved. Accordingly, the 36,000 PSUs reported on this Form 4 became vested and eligible to be settled by the Issuer as restricted stock units in accordance with 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: 0001079973-22-000089 · ownership.xml · derivative · entry 1

Brooks Megan M. · CIK 0001855229 · Chief Operating Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 49,000

Underlying: Common Stock · 40,000 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 ment 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 ment by the Issuer.

F2 · derivative.exercise_date: On August 12, 2021, the Reporting Person was granted PSUs, which are eligible to vest contingent upon the Issuer's achievement of certain performance criteria during the performance period ending on December 31, 2023. The Committee determined that, as of December 31, 2021, the performance criteria corresponding to 40,000 PSUs had been achieved. Accordingly, the 40,000 PSUs reported on this Form 4 became vested and eligible to be settled by the Issuer as restricted stock units in accordance with the Plan.

F2 · derivative.expiration_date: On August 12, 2021, the Reporting Person was granted PSUs, which are eligible to vest contingent upon the Issuer's achievement of certain performance criteria during the performance period ending on December 31, 2023. The Committee determined that, as of December 31, 2021, the performance criteria corresponding to 40,000 PSUs had been achieved. Accordingly, the 40,000 PSUs reported on this Form 4 became vested and eligible to be settled by the Issuer as restricted stock units in accordance with the Plan.

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: 0001079973-22-000084 · ownership.xml · derivative · entry 1

MCGONEGAL JEFFREY · CIK 0001187604 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 49,000

Underlying: Common Stock · 44,000 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.

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 Reporting Person was granted PSUs, which are eligible to vest contingent upon the Issuer's achievement of certain performance criteria during the performance period ending on December 31, 2023. The Committee determined that, as of December 31, 2021, the performance criteria corresponding to 44,000 PSUs had been achieved. Accordingly, the 44,000 PSUs reported on this Form 4 became vested and eligible to be settled by the Issuer as restricted stock units in accordance with the Plan.

F2 · derivative.expiration_date: On August 12, 2021, the Reporting Person was granted PSUs, which are eligible to vest contingent upon the Issuer's achievement of certain performance criteria during the performance period ending on December 31, 2023. The Committee determined that, as of December 31, 2021, the performance criteria corresponding to 44,000 PSUs had been achieved. Accordingly, the 44,000 PSUs reported on this Form 4 became vested and eligible to be settled by the Issuer as restricted stock units in accordance with the Plan.

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: 0001079973-22-000082 · ownership.xml · derivative · entry 1

Les Jason · CIK 0001721702 · Director · Chief Executive Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 344,867

Underlying: Common Stock · 50,000 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.

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 Reporting Person was granted PSUs, which are eligible to vest contingent upon the Issuer's achievement of certain performance criteria during the performance period ending on December 31, 2023. The Committee determined that, as of December 31, 2021, the performance criteria corresponding to 50,000 PSUs had been achieved. Accordingly, the 50,000 PSUs reported on this Form 4 became vested and eligible to be settled by the Issuer as restricted stock units in accordance with the Plan.

F2 · derivative.expiration_date: On August 12, 2021, the Reporting Person was granted PSUs, which are eligible to vest contingent upon the Issuer's achievement of certain performance criteria during the performance period ending on December 31, 2023. The Committee determined that, as of December 31, 2021, the performance criteria corresponding to 50,000 PSUs had been achieved. Accordingly, the 50,000 PSUs reported on this Form 4 became vested and eligible to be settled by the Issuer as restricted stock units in accordance with the Plan.

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: 0001079973-22-000080 · ownership.xml · derivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 352,642

Underlying: Common Stock · 50,000 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.

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 Reporting Person was granted PSUs, which are eligible to vest contingent upon the Issuer's achievement of certain performance criteria during the performance period ending on December 31, 2023. The Committee determined that, as of December 31, 2021, the performance criteria corresponding to 50,000 PSUs had been achieved. Accordingly, the 50,000 PSUs reported on this Form 4 became vested and eligible to be settled by the Issuer as restricted stock units in accordance with the Plan.

F2 · derivative.expiration_date: On August 12, 2021, the Reporting Person was granted PSUs, which are eligible to vest contingent upon the Issuer's achievement of certain performance criteria during the performance period ending on December 31, 2023. The Committee determined that, as of December 31, 2021, the performance criteria corresponding to 50,000 PSUs had been achieved. Accordingly, the 50,000 PSUs reported on this Form 4 became vested and eligible to be settled by the Issuer as restricted stock units in accordance with the Plan.

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: 0001079973-22-000052 · ownership.xml · derivative · entry 1

Marleau Hubert · CIK 0001833575 · 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.