Sec Form 3 Filing - 210 Capital, LLC @ Greenidge Generation Holdings Inc. - 2021-09-14

FORM 3 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 210 Capital, LLC 2. Issuer Name and Ticker or Trading Symbol Greenidge Generation Holdings Inc. [ GREE] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director X __ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 4514 COLE AVENUE, SUITE 1600 3. Date of Earliest Transaction (MM/DD/YY) 09/14/2021 (Street) DALLAS, TX75205 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) _____ Form filed by One Reporting Person __ X __ 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 Class A common stock, par value $0.0001 per share 1,011,809 ( 1 ) ( 2 ) ( 4 ) 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 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 Class B common stock, par value $0.0001 per share ( 3 ) ( 3 ) ( 3 ) Class A common stock, par value $0.0001 per share 7 20,000 ( 1 ) ( 3 ) ( 4 ) D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other 210 Capital, LLC 4514 COLE AVENUE, SUITE 1600 DALLAS, TX75205 X COVENANT RHA PARTNERS, L.P. 4514 COLE AVENUE, SUITE 1600 DALLAS, TX75205 X CCW/LAW Holdings, LLC 4514 COLE AVENUE, SUITE 1600 DALLAS, TX75205 X RHA Investments, Inc. 4514 COLE AVENUE, SUITE 1600 DALLAS, TX75205 X Alpert Robert H 4514 COLE AVENUE, SUITE 1600 DALLAS, TX75205 X Webb C Clark 4514 COLE AVENUE, SUITE 1600 DALLAS, TX75205 X Signatures 210 CAPITAL, LLC, By: Covenant RHA Partners, L.P., Its: Member, By: /s/ Robert Alpert, Its: Authorized Signatory, By: CCW/Law Holdings, LLC, Its: Member, By: /s/ C. Clark Webb, Its: Authorized Signatory 09/14/2021 Signature of Reporting Person Date COVENANT RHA PARTNERS, L.P., By: RHA Investments, Inc., Its: Member, By: /s/ Robert Alpert, Its: Authorized Signatory 09/14/2021 Signature of Reporting Person Date CCW/LAW HOLDINGS, LLC, By: /s/ C. Clark Webb, Its: Authorized Signatory 09/14/2021 Signature of Reporting Person Date RHA INVESTMENTS, INC., By: /s/ Robert Alpert, Title: President 09/14/2021 Signature of Reporting Person Date ROBERT ALPERT, By: /s/ Robert Alpert 09/14/2021 Signature of Reporting Person Date C. CLARK WEBB, By: /s/ C. Clark Webb 09/14/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )This Form 3 is being filed by (i) 210 Capital, LLC ("210 Capital"), in its capacity as a direct holder of 1,011,809 shares of Class A common stock of Greenidge Generation Holdings Inc. (the "Issuer"), (ii) Covenant RHA Partners, L.P. ("RHA Partners"), in its capacity as a member of 210 Capital, (iii) CCW/LAW Holdings, LLC ("CCW Holdings"), in its capacity as a member of 210 Capital, (iv) C. Clark Webb, in his capacity as sole member of CCW Holdings, (v) RHA Investments, Inc. ("RHA Investments"), in its capacity as general partner of RHA Partners, and (vi) Robert H. Alpert, in his capacity as President and sole shareholder of RHA Investments (collectively, the "Reporting Persons"). ( 2 )The shares of the Issuer's Class A common stock are held directly by 210 Capital. ( 3 )The shares of the Issuer's Class B common stock are held directly by 210 Capital and are convertible into shares of Class A common stock on a one-for-one basis, subject to a conversion cap limit pursuant to an agreement with the Issuer that provides such Class B common stock may not be converted into Class A common stock if, after such conversion, 210 Capital, together with its affiliates and any other person acting together with it and its affiliates, would beneficially own, as determined in accordance with Section 13(d) of the Securities Exchange Act of 1934, as amended, more than 4.99% or 9.99%, as applicable, of the Issuer's then issued and outstanding shares of Class A common stock. 210 Capital may increase or decrease its beneficial ownership limitation upon giving notice to the Issuer, which such increase or decrease will not be effective until the 61st day after the notice is delivered to the Issuer. ( 4 )The Reporting Persons disclaim beneficial ownership of these shares of the Issuer's common stock, except to the extent of his or its pecuniary interest therein, and the filing of this Form 3 shall not be construed as an admission that such persons are beneficial owners of these shares of the Issuer's common stock.

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).

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