Sec Form 4 Filing - 210 Capital, LLC @ Greenidge Generation Holdings Inc. - 2021-09-14

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 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 _____ 10% Owner _____ Officer (give title below) X __ Other (specify below) See Explanation of Responses (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 09/14/2021 G 90,000 ( 1 ) ( 2 ) ( 3 ) D $ 0 921,809 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

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other 210 Capital, LLC 4514 COLE AVENUE, SUITE 1600 DALLAS, TX75205 See Explanation of Responses COVENANT RHA PARTNERS, L.P. 4514 COLE AVENUE, SUITE 1600 DALLAS, TX75205 See Explanation of Responses CCW/LAW Holdings, LLC 4514 COLE AVENUE, SUITE 1600 DALLAS, TX75205 See Explanation of Responses RHA Investments, Inc. 4514 COLE AVENUE, SUITE 1600 DALLAS, TX75205 See Explanation of Responses Alpert Robert H 4514 COLE AVENUE, SUITE 1600 DALLAS, TX75205 See Explanation of Responses Webb C Clark 4514 COLE AVENUE, SUITE 1600 DALLAS, TX75205 See Explanation of Responses 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 09/15/2021 Signature of Reporting Person Date COVENANT RHA PARTNERS, L.P., By: RHA Investments, Inc., Its: Member, By: /s/ Robert Alpert, Its: Authorized Signatory 09/15/2021 Signature of Reporting Person Date CCW/LAW HOLDINGS, LLC, By: /s/ C. Clark Webb, Its: Authorized Signatory 09/15/2021 Signature of Reporting Person Date RHA INVESTMENTS, INC., By: /s/ Robert Alpert, Title: President 09/15/2021 Signature of Reporting Person Date ROBERT ALPERT, By: /s/ Robert Alpert 09/15/2021 Signature of Reporting Person Date C. CLARK WEBB, By: /s/ C. Clark Webb 09/15/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )This Form 4 is being filed by (i) 210 Capital, LLC ("210 Capital"), (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 )Following the Donation (as defined below), the Reporting Persons ceased to beneficially own 10% or more of the outstanding shares of Class A common stock of the Issuer. The Reporting Persons disclaim beneficial ownership of the shares of the Issuer's Class A common stock they currently own, except to the extent of his or its pecuniary interest therein, and the filing of this Form 4 shall not be construed as an admission that such persons are beneficial owners of such shares. ( 3 )Reflects a charitable donation (the "Donation") by 210 Capital.

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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