Statement of Changes in Beneficial Ownership (4)

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

OMB APPROVAL

OMB Number:

3235-0287

Estimated average burden
hours per response...

0.5

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

1. Name and Address of Reporting Person * Les Jason	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 __X__ Officer (give title below)    _____ Other (specify below) Chief Executive Officer
(Last)          (First)          (Middle) C/O RIOT BLOCKCHAIN, INC., 202 6TH STREET, SUITE 401	3. Date of Earliest Transaction (MM/DD/YYYY) 4/26/2021
(Street) CASTLE ROCK, CO 80104 (City)        (State)        (Zip)	4. If Amendment, Date Original Filed (MM/DD/YYYY)	6. Individual or Joint/Group Filing (Check Applicable Line) _X _ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security (Instr. 3)	2. Trans. Date	2A. Deemed Execution Date, if any	3. Trans. 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	4/26/2021		M		6250	A	(1)	289652 (2)	D
Common Stock	4/26/2021		F		1875 (3)	D	$38.48	287777 (2)	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivate Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Trans. Date	3A. Deemed Execution Date, if any	4. Trans. 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		7. Title and Amount of Securities Underlying Derivative Security (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	$0.00 (1)	4/26/2021		M			6250	(4)	(4)	Common Stock	6250	$0.00 (4)	307367 (2)	D

Explanation of Responses:
(1)	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.
(2)	Represents the total direct and indirect ownership of the security held by the Reporting Person immediately following the transaction reported by this Form 4.
(3)	Represents net settlement for taxes in connection with the settlement of 6,250 vested RSUs, as permitted under the Plan.
(4)	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.

Reporting Owners
Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Les Jason C/O RIOT BLOCKCHAIN, INC. 202 6TH STREET, SUITE 401 CASTLE ROCK, CO 80104	X		Chief Executive Officer

Signatures
/s/ Jason Les		4/27/2021
**Signature of Reporting Person		Date