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 OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
D'Ambrosio Lance Varro
  2. Issuer Name and Ticker or Trading Symbol
Riot Blockchain, Inc. [RIOT]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
C/O RIOT BLOCKCHAIN, INC., 3855 AMBROSIA STREET, SUITE 301
3. Date of Earliest Transaction (Month/Day/Year)
03/16/2022
(Street)

CASTLE ROCK, CO 80109
4. If Amendment, Date Original Filed(Month/Day/Year)
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 (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 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 03/16/2022   M   2,500 (1) A $ 0 2,500 (2) D  

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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 (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 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
(Month/Day/Year)
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 Transaction(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) 03/16/2022   M     2,500   (3)   (3) Common Stock 2,500 $ 0 (1) 17,500 (2) D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
D'Ambrosio Lance Varro
C/O RIOT BLOCKCHAIN, INC.
3855 AMBROSIA STREET, SUITE 301
CASTLE ROCK, CO 80109
  X      

Signatures

 /s/ Lance V. D'Ambrosio   03/18/2022
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) 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.
(2) Represents the total direct and indirect ownership of the indicated security held by the Reporting Person immediately following the reported transaction.
(3) 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.

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