Sec Form 4 Filing - MCGONEGAL JEFFREY @ Riot Blockchain, Inc. - 2022-05-17

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person MCGONEGAL JEFFREY 2. Issuer Name and Ticker or Trading Symbol Riot Blockchain, Inc. [ RIOT] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Financial Officer (Last) (First) (Middle) C/O RIOT BLOCKCHAIN, INC., 3855 AMBROSIA STREET, STE.301 3. Date of Earliest Transaction (MM/DD/YY) 05/17/2022 (Street) CASTLE ROCK, CO80109 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 05/17/2022 M 10,000 A $ 0( 1 ) 301,513( 2 ) D Common Stock 05/17/2022 F 4,100( 3 ) D $ 7.97 297,413( 2 ) D Common Stock 05/17/2022 M 68,000 A $ 0( 1 ) 365,413( 2 ) D Common Stock 05/17/2022 F 27,880( 4 ) D $ 7.97 337,533( 2 ) D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transa ction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Restricted Stock Units $ 0( 1 ) 05/17/2022 M 10,000 ( 5 ) ( 5 ) Common Stock 10,000 $ 0 0( 2 ) D Resctricted Stock Units $ 0( 1 ) 05/17/2022 M 68,000 ( 6 ) ( 6 ) Common Stock 68,000 $ 0 0( 2 ) D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other MCGONEGAL JEFFREY C/O RIOT BLOCKCHAIN, INC. 3855 AMBROSIA STREET, STE.301 CASTLE ROCK, CO80109 Chief Financial Officer Signatures /s/ Jeffrey G. McGonegal 05/19/2022 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Pursuant to the Riot Blockchain, Inc. 2019 Equity Incentive Plan, as amended, (the "Plan") each time-based restricted stock unit ("RSU") and performance-based restrictive stock unit ("PSU") 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. ( 2 )Represents the total direct and indirect beneficial ownership of the indicated security held by the Reporting Person immediately following the reported transaction. ( 3 )Represents net settlement for taxes due in connection with the conversion of 10,000 vested RSUs into shares of the Issuer's Common Stock upon settlement by the Issuer, as permitted by the Plan and approved by the Committee. ( 4 )Represents net settlement for taxes due in connection with the conversion of 68,000 vested PSUs into shares of the Issuer's Common Stock upon settlement by the Issuer, as permitted by the Plan and approved by the Committee. ( 5 )The conversion of 10,000 RSUs reported in Table II represents the settling of the vested portion of the 20,000 RSUs awarded to the Reporting Person by the Issuer on February 8, 2021 pursuant to the terms of the executive employment agreement between the Issuer and the Reporting Person, dated effective as of the grant date, which vested in four equal quarterly installments following the grant date. ( 6 )The conversion of 68,000 PSUs reported in Table II represents the settling by the Issuer of the vested portion of the PSUs granted to the reporting person on August 12, 2021 pursuant to the Award Agreement.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).

** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).

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