GREE / Greenidge Generation Holdings Inc. - Pengajuan SECLaporan Tahunan, Pernyataan Proksi

Greenidge Generation Holdings Inc.
US ˙ NasdaqGS ˙ US39531G3083

Mga Batayang Estadistika
CIK 1844971
SEC Filings
All companies that sell securities in the United States must register with the Securities and Exchange Commission (SEC) and file reports on a regular basis. These reports include company annual reports (10K, 10Q), news updates (8K), investor presentations (found in 8Ks), insider trades (form 4), ownership reports (13D, and 13G), and reports related to the specific securities sold, such as registration statements and prospectus. This page shows recent SEC filings related to Greenidge Generation Holdings Inc.
SEC Filings (Chronological Order)
Halaman ini menyediakan daftar lengkap dan kronologis dari Pengajuan SEC, tidak termasuk pengajuan kepemilikan yang kami sediakan di tempat lain.
August 27, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 August 27, 2025 Date of Report (date of earliest event reported) Greenidge Generati

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 August 27, 2025 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-40

August 27, 2025 EX-99.1

Greenidge Generation Announces Commencement of Cash Tender Offer and Exchange Offer for Senior Notes Due 2026

Greenidge Generation Announces Commencement of Cash Tender Offer and Exchange Offer for Senior Notes Due 2026 Pittsford, NY – August 27, 2025 – Greenidge Generation Holdings Inc.

August 25, 2025 EX-99.1

Greenidge Generation Announces Termination of Agreement to Sell South Carolina Property

Greenidge Generation Announces Termination of Agreement to Sell South Carolina Property Pittsford, NY – August 25, 2025 – Greenidge Generation Holdings Inc.

August 25, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 August 24, 2025 Date of Report (date of earliest event reported) Greenidge Generati

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 August 24, 2025 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-40

August 13, 2025 EX-99.1

Recent Public Tender/Exchange Offer Resulted in Significant Debt Reduction, with Cash Tender Offer Oversubscribed by 100% Announces Charles M. Zeynel’s Appointment to the Board, Bringing Extensive Expertise in Sustainable Materials, Carbon Removal Te

Greenidge Generation Highlights Recent Business Advancements and Reports Financial and Operating Results for the Second Quarter 2025 Recent Public Tender/Exchange Offer Resulted in Significant Debt Reduction, with Cash Tender Offer Oversubscribed by 100% Announces Charles M.

August 13, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2025 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-40808 Greenidge

August 13, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 August 11, 2025 Date of Report (date of earliest event reported) Greenidge Generati

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 August 11, 2025 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-40

August 6, 2025 EX-10.1

Asset Purchase Agreement, dated August 1, 2025, by and between Greenidge Mississippi LLC and US Digital Mining Mississippi LLC

ASSET PURCHASE AGREEMENT between GREENIDGE MISSISSIPPI LLC (AS SELLER) and US DIGITAL MINING MISSISSIPPI LLC (AS BUYER) dated as of August 1, 2025 ASSET PURCHASE AGREEMENT This Asset Purchase Agreement (this “Agreement”), dated as of August 1, 2025 (“Execution Date”), is entered into between Greenidge Mississippi LLC, a Delaware limited liability company (“Seller”), and US Digital Mining Mississippi LLC, a Mississippi limited liability company (“Buyer”).

August 6, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 August 1, 2025 Date of Report (date of earliest event reported) Greenidge Generatio

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 August 1, 2025 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-408

July 21, 2025 EX-4.2

between Greenidge Generation Holdings Inc. and Wilmington Savings Fund Society, FSB, as trustee (incorporated by reference to Exhibit 4.2 to the Current Report on Form 8-K filed on

Exhibit 4.2 GREENIDGE GENERATION HOLDINGS INC. and WILMINGTON SAVINGS FUND SOCIETY, FSB as Trustee SECOND SUPPLEMENTAL INDENTURE Dated as of July 21, 2025 to the Indenture dated as of October 13, 2021 10.00% Senior Notes due 2030 Table of Contents Page ARTICLE 1 APPLICATION OF SECOND SUPPLEMENTAL INDENTURE AND CREATION OF THE NOTES 2 Section 1.01. Application of Second Supplemental Indenture 2 Sec

July 21, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): July 21, 2025 Greenidge Generatio

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of Report (Date of earliest event reported): July 21, 2025 Greenidge Generation Holdings Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-40808 86-1746728 (State or Other Jurisdiction (Commission (IRS Emp

July 18, 2025 SC TO-I/A

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE TO TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) OR 13(e)(1) OF THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 4) GREENIDGE GENERATION HOLDINGS, INC. (Name of Subject Company (Iss

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE TO TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) OR 13(e)(1) OF THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 4) GREENIDGE GENERATION HOLDINGS, INC. (Name of Subject Company (Issuer) and Filing Person (Offeror)) 8.50% Senior Subordinated Notes due 2026 (Title of Class of Securities) 39531G209 (CUSIP Numbers of Class of Securit

July 18, 2025 EX-99.(A)(5)(C)

Press Release, dated July 18, 2025.

Exhibit (a)(5)(C) Greenidge Generation Announces Expiration and Final Results of Tender/Exchange Offer for Senior Notes Due 2026 Pittsford, NY – July 18, 2025 – Greenidge Generation Holdings Inc.

July 3, 2025 EX-99.(A)(5)(B)

Press Release, dated July 3, 2025.

Exhibit (a)(5)(B) Greenidge Generation Announces Early Results of Cash Tender Offer and Exchange Offer for Senior Notes Due 2026 Pittsford, NY – July 3, 2025 – Greenidge Generation Holdings Inc.

July 3, 2025 SC TO-I/A

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE TO TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) OR 13(e)(1) OF THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 3) GREENIDGE GENERATION HOLDINGS, INC. (Name of Subject Company (Iss

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE TO TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) OR 13(e)(1) OF THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 3) GREENIDGE GENERATION HOLDINGS, INC. (Name of Subject Company (Issuer) and Filing Person (Offeror)) 8.50% Senior Subordinated Notes due 2026 (Title of Class of Securities) 39531G209 (CUSIP Numbers of Class of Securit

June 30, 2025 CORRESP

June 30, 2025

June 30, 2025 VIA EDGAR United States Securities and Exchange Commission Division of Corporate Finance 100 F Street, N.

June 27, 2025 SC TO-I/A

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE TO TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) OR 13(e)(1) OF THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 2) GREENIDGE GENERATION HOLDINGS, INC. (Name of Subject Company (Iss

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE TO TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) OR 13(e)(1) OF THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 2) GREENIDGE GENERATION HOLDINGS, INC. (Name of Subject Company (Issuer) and Filing Person (Offeror)) 8.50% Senior Subordinated Notes due 2026 (Title of Class of Securities) 39531G209 (CUSIP Numbers of Class of Securit

June 20, 2025 EX-99.(A)(1)(H)

Letter to Holders of Old Notes (incorporated herein by reference from the Amendment No. 1, filed June 20, 2025).

Exhibit (a)(1)(H)   Greenidge Generation Holdings Inc. 1159 Pittsford-Victor Road, Suite 240 Pittsford, NY 14534 Holders of Greenidge Generation Holdings Inc. 8.50% Senior Notes Due 2026: On June 17, 2025, Greenidge Generation Holdings Inc. (“Greenidge” or the “Company”) commenced two concurrent offers (collectively, the “Tender/Exchange Offer” or the “Offer”) to exchange or to purchase, at the el

June 20, 2025 SC TO-I/A

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE TO TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) OR 13(e)(1) OF THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 1) GREENIDGE GENERATION HOLDINGS, INC. (Name of Subject Company (Iss

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE TO TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) OR 13(e)(1) OF THE SECURITIES EXCHANGE ACT OF 1934 (Amendment No. 1) GREENIDGE GENERATION HOLDINGS, INC. (Name of Subject Company (Issuer) and Filing Person (Offeror)) 8.50% Senior Subordinated Notes due 2026 (Title of Class of Securities) 39531G209 (CUSIP Numbers of Class of Securit

June 18, 2025 EX-FILING FEES

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Table Form S-8 (Form Type) Greenidge Generation Holdings Inc.

June 18, 2025 S-8

As filed with the Securities and Exchange Commission on June 18, 2025

As filed with the Securities and Exchange Commission on June 18, 2025 Registration No.

June 18, 2025 EX-25.1

Statement of Eligibility of Wilmington Savings Fund Society, FSB as the Trustee on Form T-1 for the Second Supplemental Indenture.

Exhibit 25.1 SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-1 STATEMENT OF ELIGIBILITY UNDER THE TRUST INDENTURE ACT OF 1939 OF A CORPORATION DESIGNATED TO ACT AS TRUSTEE Check if an Application to Determine Eligibility of a Trustee Pursuant to Section 305(b)(2) WILMINGTON SAVINGS FUND SOCIETY, FSB (Exact name of Trustee as specified in its charter) N/A 51-0054940 (Jurisdiction o

June 18, 2025 EX-99.T3C3

Form of Second Supplemental Indenture between the Company and U Wilmington Savings Fund Society, FSB, as trustee, relating to the Company’s 10.00% Senior Notes due 2030.

Exhibit T3C.3 GREENIDGE GENERATION HOLDINGS INC. and WILMINGTON SAVINGS FUND SOCIETY, FSB as Trustee SECOND SUPPLEMENTAL INDENTURE Dated as of , 2025 to the Indenture dated as of October 13, 2021 10.00% Senior Notes due 2030 Table of Contents Page ARTICLE 1 APPLICATION OF SECOND SUPPLEMENTAL INDENTURE AND CREATION OF THE NOTES 2 Section 1.01. Application of Second Supplemental Indenture 2 Section

June 18, 2025 T-3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-3 FOR APPLICATIONS FOR QUALIFICATION OF INDENTURES UNDER THE TRUST INDENTURE ACT OF 1939 GREENIDGE GENERATION HOLDINGS, INC. (Name of Applicant) 1159 Pittsford-Victor Road

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM T-3 FOR APPLICATIONS FOR QUALIFICATION OF INDENTURES UNDER THE TRUST INDENTURE ACT OF 1939 GREENIDGE GENERATION HOLDINGS, INC. (Name of Applicant) 1159 Pittsford-Victor Road, Suite 240 Pittsford, New York 14534 (Address of principal executive offices) SECURITIES TO BE ISSUED UNDER THE INDENTURE TO BE QUALIFIED TITLE OF CL

June 17, 2025 EX-99.(A)(1)(D)

Letter to Brokers, Dealers, Commercial Banks, Trust Companies and other Nominees (incorporated herein by reference from the Original Schedule TO, filed on June 17, 2025).

Exhibit (a)(1)(D) GREENIDGE GENERATION HOLDINGS, INC. Pursuant to the Offer to Purchase for Cash and Offer to Exchange Relating to up to $58,274,700 Aggregate Principal Amount of its Outstanding 8.50% Senior Notes due 2026 (CUSIP No. 39531G209) THE TENDER/EXCHANGE OFFER (AS DEFINED HEREIN) WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON THURSDAY, JULY 17, 2025, WHICH WE REFER TO AS THE “EXPIRATIO

June 17, 2025 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits, Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 June 17, 2025 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-4080

June 17, 2025 EX-99.(A)(1)(F)

Form of Second Supplemental Indenture between Greenidge Generation Holdings Inc. and Wilmington Savings Fund Society, FSB, as trustee (incorporated herein by reference from the Original Schedule TO, filed on June 17, 2025).

Exhibit (a)(1)(F) GREENIDGE GENERATION HOLDINGS INC. and WILMINGTON SAVINGS FUND SOCIETY, FSB as Trustee SECOND SUPPLEMENTAL INDENTURE Dated as of , 2025 to the Indenture dated as of October 13, 2021 10.00% Senior Notes due 2030 Table of Contents Page ARTICLE 1 APPLICATION OF SECOND SUPPLEMENTAL INDENTURE AND CREATION OF THE NOTES 2 Section 1.01. Application of Second Supplemental Indenture 2 Sect

June 17, 2025 EX-99.(A)(1)(B)

Letter of Transmittal (incorporated herein by reference from the Original Schedule TO, filed on June 17, 2025).

Exhibit (a)(1)(B) LETTER OF TRANSMITTAL Pursuant to the Offer to Purchase for Cash and Offer to Exchange Relating to up to $58,274,700 Aggregate Principal Amount of its Outstanding 8.

June 17, 2025 EX-99.(A)(1)(C)

Notice of Guaranteed Delivery (incorporated herein by reference from the Original Schedule TO, filed on June 17, 2025).

Exhibit (a)(1)(C) NOTICE OF GUARANTEED DELIVERY Pursuant to the Offer to Purchase for Cash and Offer to Exchange Relating to up to $58,274,700 Aggregate Principal Amount of its Outstanding 8.

June 17, 2025 SC TO-I

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE TO TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) OR 13(e)(1) OF THE SECURITIES EXCHANGE ACT OF 1934 GREENIDGE GENERATION HOLDINGS, INC. (Name of Subject Company (Issuer) and Filing Pe

SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE TO TENDER OFFER STATEMENT UNDER SECTION 14(d)(1) OR 13(e)(1) OF THE SECURITIES EXCHANGE ACT OF 1934 GREENIDGE GENERATION HOLDINGS, INC. (Name of Subject Company (Issuer) and Filing Person (Offeror)) 8.50% Senior Subordinated Notes due 2026 (Title of Class of Securities) 39531G209 (CUSIP Numbers of Class of Securities) Jordan Kovler

June 17, 2025 EX-99.(A)(1)(A)

Offer to Purchase/Exchange, dated June 17, 2025 (incorporated herein by reference from the Original Schedule TO, filed on June 17, 2025).

Exhibit (a)(1)(A) $58,274,700 Offer to Purchase for Cash and Offer to Exchange Relating to up to $58,274,700 Aggregate Principal Amount of its Outstanding 8.

June 17, 2025 EX-99.(A)(5)(A)

Press Release, dated June 17, 2025 (incorporated herein by reference from the Original Schedule TO, filed on June 17, 2025).

Exhibit (a)(5)(A) Greenidge Generation Announces Commencement of Cash Tender Offer and Exchange Offer for Senior Notes Due 2026 Pittsford, NY – June 17, 2025 – Greenidge Generation Holdings Inc.

June 17, 2025 EX-99.(A)(1)(E)

Letter to Clients for use by Brokers, Dealers, Commercial Banks, Trust Companies and other Nominees (incorporated herein by reference from the Original Schedule TO, filed on June 17, 2025).

Exhibit (a)(1)(E) GREENIDGE GENERATION HOLDINGS, INC. Pursuant to the Offer to Purchase for Cash and Offer to Exchange Relating to up to $58,274,700 Aggregate Principal Amount of its Outstanding 8.50% Senior Notes due 2026 (CUSIP No. 39531G209) THE TENDER/EXCHANGE OFFER (AS DEFINED HEREIN) WILL EXPIRE AT 5:00 P.M., NEW YORK CITY TIME, ON THURSDAY, JULY 17, 2025, WHICH WE REFER TO AS THE “EXPIRATIO

June 17, 2025 EX-FILING FEES

Filing Fee Table (incorporated herein by reference from the Original Schedule TO, filed on June 17, 2025).

EX 107-FILING FEES Calculation of Filing Fees Table SC TO-I (Form Type) GREENIDGE GENERATION HOLDINGS, INC.

May 15, 2025 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2025 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-40808 Greenidge

May 15, 2025 EX-99.1

Greenidge Generation Reports Financial and Operating Results for the First Quarter 2025 Highlights Recent Board Refreshment and Appointments of Kenneth Fearn and Christopher Krug as Independent Directors Notes Recent Purchase of New Mississippi Site

Greenidge Generation Reports Financial and Operating Results for the First Quarter 2025 Highlights Recent Board Refreshment and Appointments of Kenneth Fearn and Christopher Krug as Independent Directors Notes Recent Purchase of New Mississippi Site and Progress Toward Closing on Sale of South Carolina Property Continues to Explore Various Options to Grow Mining Operations Amid Surging Institutional and Sovereign Demand for Bitcoin Pittsford, NY – May 15, 2025 – Greenidge Generation Holdings Inc.

May 15, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 May 15, 2025 Date of Report (date of earliest event reported) Greenidge Generation

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 May 15, 2025 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-40808

May 7, 2025 EX-10.1

Exchange Agreement, dated May 1, 2025.

greeexchangeagreement-05 EXCHANGE AGREEMENT This Exchange Agreement (this “Agreement”) is made as of the date set forth on the signature pages attached hereto (“Effective Date”), by and between Greenidge Generation Holdings Inc.

May 7, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 May 1, 2025 Date of Report (date of earliest event reported) Greenidge Generation H

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 May 1, 2025 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-40808

April 28, 2025 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Ame

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confide

April 28, 2025 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Ame

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A (Rule 14a-101) INFORMATION REQUIRED IN PROXY STATEMENT SCHEDULE 14A INFORMATION Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confide

April 21, 2025 10-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No. 1)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No. 1) (Mark One) x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission File Number 001-4

April 16, 2025 EX-99.1

Greenidge Generation Announces Changes to its Board of Directors Kenneth Fearn and Christopher Krug to Join Board as Independent Directors, Bringing Proven Public Company Track Records David Anderson and Daniel Rothaupt to Retire from Board in Alignm

Greenidge Generation Announces Changes to its Board of Directors Kenneth Fearn and Christopher Krug to Join Board as Independent Directors, Bringing Proven Public Company Track Records David Anderson and Daniel Rothaupt to Retire from Board in Alignment with Ongoing Board Refreshment Timothy Fazio Elected as Chairman of the Board Pittsford, NY – April 16, 2025 – Greenidge Generation Holdings Inc.

April 16, 2025 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 April 14, 2025 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-408

April 15, 2025 8-K

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 April 9, 2025 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-4080

March 31, 2025 EX-21.1

Subsidiaries of Greenidge Generation Holdings Inc.

Exhibit 21.1 List of Subsidiaries Greenidge Generation Holdings Inc.’s subsidiaries are listed below. Name of Subsidiary Jurisdiction of Formation Greenidge Generation LLC New York Lockwood Hills LLC New York Greenidge Solar LLC Delaware Greenidge Pipeline LLC Delaware Greenidge Pipeline Properties Corporation New York Greenidge Markets and Trading LLC Delaware Greenidge Generation Blocker Inc. De

March 31, 2025 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2024 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission File Number 001-40808 Greenidge Gener

March 31, 2025 EX-4.4

Description of Registrant's Securities.

Exhibit 4.6 DESCRIPTION OF SECURITIES The following is a summary of the terms of our securities. This summary does not purport to be complete, nor does it represent all information which you might find to be important for understanding our capital stock. This summary is subject to, and qualified in its entirety by reference to, our Certificate of Incorporation and Bylaws (each as defined below). R

March 6, 2025 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 March 6, 2025 Date of Report (date of earliest event reported) Greenidge Generation

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 March 6, 2025 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-4080

March 6, 2025 EX-99.1

Greenidge Generation Reports Preliminary Financial and Operating Results for the Fourth Quarter and Full Year 2024 Improvement on All Operational Metrics from Q3 2024 Reduced SG&A Expenses by $8.9 million in 2024 Seeking to Acquire Over 200MW of Ener

Greenidge Generation Reports Preliminary Financial and Operating Results for the Fourth Quarter and Full Year 2024 Improvement on All Operational Metrics from Q3 2024 Reduced SG&A Expenses by $8.

February 14, 2025 EX-FILING FEES

Filing Fee Table.

Exhibit 107 Calculation of Filing Fee Table Form S-8 (Form Type) Greenidge Generation Holdings Inc.

February 14, 2025 S-8

As filed with the Securities and Exchange Commission on February 14, 2025

As filed with the Securities and Exchange Commission on February 14, 2025 Registration No.

January 28, 2025 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 January 24, 2025 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-4

January 28, 2025 EX-10.1

Equity Interest Payment Agreement, dated January 24, 2025, by and among (i) Greenidge Generation Holdings Inc., (ii) Atlas Capital Resources (A9) LP, (iii) Atlas Capital Resources (A9-Parallel) LP and (iv) Atlas Capital Resources (P) LP (incorporated by reference to Exhibit 10.1 to the Current Report on Form 8-K filed on January 28, 2025).

Execution Version EQUITY INTEREST PAYMENT AGREEMENT THIS EQUITY INTEREST PAYMENT AGREEMENT (this “Agreement”), is made as of January 24, 2025 (the “Effective Date”), by and between Greenidge Generation Holdings Inc.

December 4, 2024 EX-99.1

Greenidge Generation Announces Sale of South Carolina Property to Data Journey for $12.1 Million and 8% Stake in Planned Data Center’s Profits Marks Greenidge’s First Large-Scale Entry into the Data Center Space as the Company Will Continue Working w

Greenidge Generation Announces Sale of South Carolina Property to Data Journey for $12.

December 4, 2024 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 November 27, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-

November 18, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 November 13, 2024 Date of Report (date of earliest event reported) Greenidge Genera

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 November 13, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-

November 18, 2024 DEF 14C

2021 Equity Incentive Plan (incorporated by reference to

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14C INFORMATION INFORMATION STATEMENT PURSUANT TO SECTION 14(C) OF THE SECURITIES EXCHANGE ACT OF 1934 Check the appropriate box: ☐ Preliminary Information Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14c-5(d)(2)) ☒ Definitive Information Statement Greenidge Generation Holdings Inc. (

November 15, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 November 14, 2024 Date of Report (date of earliest event reported) Greenidge Genera

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 November 14, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-

November 15, 2024 EX-99.1

New York Supreme Court Rules for Greenidge Generation DEC’s Denial of Air Permit Rejected by the Court; Deemed “Arbitrary and Capricious” Greenidge’s NY Facility to Continue Operations, Providing High-Tech Local Jobs and Power to the Electrical Grid

New York Supreme Court Rules for Greenidge Generation DEC’s Denial of Air Permit Rejected by the Court; Deemed “Arbitrary and Capricious” Greenidge’s NY Facility to Continue Operations, Providing High-Tech Local Jobs and Power to the Electrical Grid Daily Seventh Court Ruling on Greenidge Operations – Seven Decisions in Favor of Greenidge DRESDEN, NY – November 14, 2024 – Greenidge Generation Holdings Inc.

November 7, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 November 7, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-4

November 7, 2024 EX-99.1

Greenidge Generation Reports Financial and Operating Results for the Third Quarter 2024 Exceeds or Meets High End of Range for All Figures Reported in Preliminary Results Provides Update on Fleet Upgrade and Continued SG&A Expense Reduction

Greenidge Generation Reports Financial and Operating Results for the Third Quarter 2024 Exceeds or Meets High End of Range for All Figures Reported in Preliminary Results Provides Update on Fleet Upgrade and Continued SG&A Expense Reduction DRESDEN, NY, November 7, 2024 — Greenidge Generation Holdings Inc.

November 7, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2024 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-40808 Green

October 29, 2024 8-K

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 October 29, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-4

October 28, 2024 EX-10.1

Exchange Agreement, dated as of October 24, 2024, between Greenidge Generation Holdings Inc. and the signatory thereto (incorporated by reference to Exhibit 10.1 to the Current Report on Form 8-K filed on October 28, 2024).

EXCHANGE AGREEMENT This Exchange Agreement (this “Agreement”) is made as of the date set forth on the signature pages attached hereto (“Effective Date”), by and between Greenidge Generation Holdings Inc.

October 28, 2024 8-K

Unregistered Sales of Equity Securities, Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 October 24, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-4

October 15, 2024 8-K

Notice of Delisting or Failure to Satisfy a Continued Listing Rule or Standard; Transfer of Listing, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 October 14, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-4

October 15, 2024 EX-99.1

Greenidge Announces Preliminary Financial and Operating Results for the Third Quarter 2024 Reports SG&A expense reduction of approximately $9.1 million year to date in 2024 from ongoing SG&A reduction program compared to the same period in 2023 Beats

Greenidge Announces Preliminary Financial and Operating Results for the Third Quarter 2024 Reports SG&A expense reduction of approximately $9.

September 25, 2024 424B3

GREENIDGE GENERATION HOLDINGS INC. 7,300,000 Shares of Class A Common Stock

PROSPECTUS Filed Pursuant to Rule 424(b)(3) Registration No. 333-281156 GREENIDGE GENERATION HOLDINGS INC. 7,300,000 Shares of Class A Common Stock This prospectus relates to the offer and resale of up to 7,300,000 shares of Class A common stock, $0.0001 par value, of Greenidge Generation Holdings Inc. (“Greenidge”) by B. Riley Principal Capital II, LLC (the “Selling Stockholder”). The shares incl

September 17, 2024 POS AM

As filed with the Securities and Exchange Commission on September 17, 2024

As filed with the Securities and Exchange Commission on September 17, 2024 Registration No.

September 13, 2024 AW

VIA EDGAR AND ELECTRONIC MAIL

September 13, 2024 VIA EDGAR AND ELECTRONIC MAIL United States Securities and Exchange Commission Division of Corporate Finance Office of Crypto Assets 100 F Street, N.

September 12, 2024 S-1/A

As filed with the Securities and Exchange Commission on September 12, 2024

As filed with the Securities and Exchange Commission on September 12, 2024 Registration No.

September 9, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 September 9, 2024 Date of Report (date of earliest event reported) Greenidge Genera

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 September 9, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-

September 9, 2024 EX-99.2

EX-99.2

Investor Presentation September 2024Disclaimer Forward-Looking Statements The presentation includes certain statements that may constitute “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended.

September 9, 2024 EX-99.1

Greenidge Provides Bitcoin Production Update and Release of Investor Presentation

Greenidge Provides Bitcoin Production Update and Release of Investor Presentation DRESDEN, NY, September 9, 2024 — Greenidge Generation Holdings Inc.

August 20, 2024 8-K

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 August 20, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-40

August 16, 2024 8-K

Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 August 15, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-40

August 16, 2024 424B3

GREENIDGE GENERATION HOLDINGS INC. 7,300,000 Shares of Class A Common Stock

PROSPECTUS Filed Pursuant to Rule 424(b)(3) Registration No. 333-281156 GREENIDGE GENERATION HOLDINGS INC. 7,300,000 Shares of Class A Common Stock This prospectus relates to the offer and resale of up to 7,300,000 shares of Class A common stock, $0.0001 par value, of Greenidge Generation Holdings Inc. (“Greenidge”) by B. Riley Principal Capital II, LLC (the “Selling Stockholder”). The shares incl

August 14, 2024 EX-99.1

Greenidge Generation Reports Financial and Operating Results for the Second Quarter 2024 Reports SG&A reductions of $6.4 million in the first six months of 2024 vs. 2023 Expects a significant boost in earnings in subsequent quarters due to ongoing co

Greenidge Generation Reports Financial and Operating Results for the Second Quarter 2024 Reports SG&A reductions of $6.

August 14, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2024 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-40808 Greenidge

August 14, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 August 14, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-40

August 9, 2024 CORRESP

August 9, 2024 VIA EMAIL AND EDGAR United States Securities and Exchange Commission Division of Corporate Finance Office of Crypto Assets 100 F Street, N.E. Washington, D.C. 20549-4631 Attn: David Gessert, Staff Attorney Re: Greenidge Generation Hold

August 9, 2024 VIA EMAIL AND EDGAR United States Securities and Exchange Commission Division of Corporate Finance Office of Crypto Assets 100 F Street, N.

August 1, 2024 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 August 1, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-408

August 1, 2024 EX-FILING FEES

(incorporated by reference to Exhibit 107 to the Registration Statement on Form S-1 filed on August 1, 2024)

Exhibit 107 Calculation of Filing Fee Tables S-1 (Form Type) Greenidge Generation Holdings Inc.

August 1, 2024 EX-99.1

Greenidge Announces Launch of New Self-Mined Bitcoin Retention Strategy to Drive Growth Secures $20 Million Committed Equity Facility to Enhance Financial Flexibility for Execution on Company’s Growth Roadmap

Greenidge Announces Launch of New Self-Mined Bitcoin Retention Strategy to Drive Growth Secures $20 Million Committed Equity Facility to Enhance Financial Flexibility for Execution on Company’s Growth Roadmap DRESDEN, NY, August 1, 2024 — Greenidge Generation Holdings Inc.

August 1, 2024 S-1

As filed with the Securities and Exchange Commission on July 31, 2024

As filed with the Securities and Exchange Commission on July 31, 2024 Registration No.

August 1, 2024 EX-99.1

Greenidge Provides Bitcoin Production Update

Greenidge Provides Bitcoin Production Update DRESDEN, NY, August 1, 2024 — Greenidge Generation Holdings Inc.

August 1, 2024 8-K/A

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A (Amendment No. 1) CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 July 30, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or or

July 31, 2024 EX-10.2

Registration Rights Agreement, dated as of July 30, 2024, between Greenidge Generation Holdings Inc. and B. Riley Principal Capital II, LLC (incorporated by reference to Exhibit 10.2 to the Company’s Current Report on Form 8-K furnished on July 31, 2024)

REGISTRATION RIGHTS AGREEMENT This REGISTRATION RIGHTS AGREEMENT (this “Agreement”), dated as of July 30, 2024, is by and between B.

July 31, 2024 EX-10.1

Common Stock Purchase Agreement, dated as of July 30, 2024, between Greenidge Generation Holdings Inc. and B. Riley Principal Capital II, LLC (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K furnished on July 31, 2024)

Execution Version COMMON STOCK PURCHASE AGREEMENT Dated as of July 30, 2024 by and between GREENIDGE GENERATION HOLDINGS INC.

July 31, 2024 8-K

Regulation FD Disclosure, Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 July 30, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-4080

July 24, 2024 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 July 24, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-4080

July 24, 2024 EX-99.1

Greenidge to Unveil Pod X Bitcoin Mining Solution at the Bitcoin Conference

Greenidge to Unveil Pod X Bitcoin Mining Solution at the Bitcoin Conference Dresden, NY – July 24, 2024 – Greenidge Generation Holdings Inc.

July 11, 2024 EX-99.1

Greenidge Expands Bitcoin Mining Capabilities with Launch of Mississippi Site and Deployment of 2,400 Miners Demonstrates Competitive Edge of Greenidge’s Best-in-Class Pod X Mining Infrastructure Solution Plans to Expand Site’s Power Access By At Lea

Greenidge Expands Bitcoin Mining Capabilities with Launch of Mississippi Site and Deployment of 2,400 Miners Demonstrates Competitive Edge of Greenidge’s Best-in-Class Pod X Mining Infrastructure Solution Plans to Expand Site’s Power Access By At Least 25 MW in Next 12 Months Grows Greenidge’s Current Footprint to 4 Active Bitcoin Mining Sites with 122 MW of Current Total Power Capacity Dresden, NY – July 11, 2024 – Greenidge Generation Holdings Inc.

July 11, 2024 8-K

Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 July 11, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-4080

June 20, 2024 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 June 18, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-4080

May 29, 2024 S-3/A

As filed with the Securities and Exchange Commission on May 29, 2024

As filed with the Securities and Exchange Commission on May 29, 2024 Registration No.

May 28, 2024 CORRESP

VIA EDGAR

May 28, 2024 VIA EDGAR United States Securities and Exchange Commission Division of Corporate Finance Office of Crypto Assets 100 F Street, N.

May 22, 2024 CORRESP

VIA EDGAR

May 22, 2024 VIA EDGAR United States Securities and Exchange Commission Division of Corporate Finance Office of Crypto Assets 100 F Street, N.

May 21, 2024 CORRESP

VIA EDGAR

May 21, 2024 VIA EDGAR United States Securities and Exchange Commission Division of Corporate Finance Office of Crypto Assets 100 F Street, N.

May 17, 2024 CORRESP

* * * *

May 17, 2024 VIA EDGAR AND ELECTRONIC MAIL United States Securities and Exchange Commission Division of Corporate Finance Office of Crypto Assets 100 F Street, N.

May 17, 2024 CORRESP

* * * *

May 17, 2024 VIA EDGAR AND ELECTRONIC MAIL United States Securities and Exchange Commission Division of Corporate Finance Office of Crypto Assets 100 F Street, N.

May 15, 2024 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2024 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-40808 Greenidge

May 7, 2024 10-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No. 1)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No. 1) (Mark One) ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission File Number 001-4

May 7, 2024 CORRESP

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May 7, 2024 VIA EDGAR AND ELECTRONIC MAIL United States Securities and Exchange Commission Division of Corporate Finance Office of Crypto Assets 100 F Street, N.

May 1, 2024 EX-99.2

Investor Presentation May 2024 Disclaimer Forward-Looking Statements The presentation includes certain statements that may constitute “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Sectio

Investor Presentation May 2024 Disclaimer Forward-Looking Statements The presentation includes certain statements that may constitute “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended.

May 1, 2024 EX-99.1

Greenidge Generation Announces Preliminary Financial and Operating Results for the First Quarter 2024 and Release of Investor Presentation Select Results Include Q1 Adjusted EBITDA of $2.1 million to $3.1 million and Loss Per Share of $0.33 to $0.43

Greenidge Generation Announces Preliminary Financial and Operating Results for the First Quarter 2024 and Release of Investor Presentation Select Results Include Q1 Adjusted EBITDA of $2.

May 1, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 May 1, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-40808

April 29, 2024 EX-10.1

Release Agreement, dated April 26, 2024, between Greenidge Generation Holdings Inc. and Scott MacKenzie

RELEASE AGREEMENT This Release, dated as of April 26, 2024 (this “Release”) by and between Scott MacKenzie (“Employee”) and Greenidge Generation Holdings Inc.

April 29, 2024 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant  ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, For Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☒ Defi

April 29, 2024 ARS

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ________________________________ FORM 10-K ________________________________ (Mark One) x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For

ARS 1 gree-20231231x10k.htm ARS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission File

April 29, 2024 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 April 26, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-408

April 29, 2024 DEFA14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant  ☐ Check the appropriate box: ☐ Preliminary Proxy Statement ☐ Confidential, For Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) ☐ Defi

April 23, 2024 CORRESP

* * * *

April 23, 2024 VIA EDGAR United States Securities and Exchange Commission Division of Corporate Finance Office of Crypto Assets 100 F Street, N.

April 19, 2024 8-K

Shareholder Director Nominations

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 April 19, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-408

April 10, 2024 EX-10.46

Commercial Purchase and Sale Agreement, dated March 6, 2024,

COMMERCIAL PURCHASE AND SALE AGREEMENT This Commercial Purchase and Sale Agreement (this “Agreement”) is made and effective as of this 6th day of March, 2024 (the “Effective Date”) by and between the undersigned SELLER, its successors and/or assigns (except as limited herein) (the “Seller”), and the undersigned BUYER, its successors and/or assigns (except as limited herein) (the “Buyer”).

April 10, 2024 EX-97.1

Policy for the Recovery of Erroneously Awarded Compensation.

GREENIDGE GENERATION HOLDINGS INC. POLICY FOR THE RECOVERY OF ERRONEOUSLY AWARDED COMPENSATION 1.OVERVIEW 1.1.In accordance with Nasdaq Rule 5608, Section 10D and Rule 10D-1 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) (“Rule 10D-1”), the Board of Directors (the “Board”) of Greenidge Generation Holdings Inc. (the “Company”) has adopted this Policy (the “Policy”) to provi

April 10, 2024 EX-21.1

Subsidiaries of Greenidge Generation Holdings Inc.

Exhibit 21.1 List of Subsidiaries Greenidge Generation Holdings Inc.’s subsidiaries are listed below. Name of Subsidiary Jurisdiction of Formation Greenidge Generation LLC New York Lockwood Hills LLC New York Greenidge Solar LLC Delaware Greenidge Pipeline LLC Delaware Greenidge Pipeline Properties Corporation New York Greenidge Markets and Trading LLC Delaware Greenidge Generation Blocker Inc. De

April 10, 2024 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Tables S-3 (Form Type) Greenidge Generation Holdings Inc.

April 10, 2024 EX-19.1

corporated by reference to Exhibit 19.1 to the Annual Report on Form 1

GREENIDGE GENERATION HOLDINGS INC. INSIDER TRADING POLICY I.Introduction The purpose of this Insider Trading Policy (this “Policy”) is to promote compliance with applicable securities laws by Greenidge Generation Holdings Inc. (the “Company”) and its subsidiaries and all directors, officers, employees, and other Insiders (as more fully described below), in order to preserve the reputation and inte

April 10, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 April 10, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-408

April 10, 2024 S-3

As filed with the Securities and Exchange Commission on April 10, 2024

As filed with the Securities and Exchange Commission on April 10, 2024 Registration No.

April 10, 2024 EX-10.38

(incorporated by reference to Exhibit 10.37 to the Annual Report on Form 10-K filed on April 9, 2024)

4871-3766-5927, v. 3 EXECUTION VERSION 135 Rennell Drive 3rd Floor Fairfield, Connecticut 06890 November 16, 2023 Jordan Kovler 2401 Collins Avenue 1103 Miami Beach, FL 33140 BY EMAIL Dear Jordan: We are very pleased to offer you the opportunity to be employed by Greenidge Generation Holdings Inc., a Delaware corporation (the “Company”), as the Company’s Chief Executive Officer (“CEO”), reporting

April 10, 2024 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission File Number 001-40808 Greenidge Gener

April 10, 2024 EX-99.1

Greenidge Generation Reports Financial and Operating Results for the Fourth Quarter and Full Year 2023 Results Include Q4 Net Income of $2.7 million, Adjusted EBITDA of $3.6 million and Earnings Per Share of $0.36 Ongoing Transformation and Growth of

Greenidge Generation Reports Financial and Operating Results for the Fourth Quarter and Full Year 2023 Results Include Q4 Net Income of $2.

April 10, 2024 EX-4.6

Description of Registrant’s Securities (incorporated by reference to Exhibit 4.6 to the Annual Report on Form 10-K filed on April 10, 2024)

Exhibit 4.6 DESCRIPTION OF SECURITIES The following is a summary of the terms of our securities. This summary does not purport to be complete, nor does it represent all information which you might find to be important for understanding our capital stock. This summary is subject to, and qualified in its entirety by reference to, our Certificate of Incorporation and Bylaws (each as defined below). R

April 10, 2024 EX-10.37

ctive October 11, 2023, between Greenidge Genera

4869-5259-3536, v. 5 135 Rennell Drive 3rd Floor Fairfield, Connecticut 06890 EXECUTION VERSION As of October 11, 2023 Christian Mulvihill BY EMAIL Dear Christian: We are very pleased to offer you the opportunity to continue your employment with Greenidge Generation Holdings Inc., a Delaware corporation (the “Company”), as the Company’s Chief Financial Officer, reporting directly to the Chief Exec

April 5, 2024 8-K

Regulation FD Disclosure, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 April 4, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-4080

April 5, 2024 EX-99.1

Greenidge Announces Continued Expansion of Power Capacity; Company Has Secured Access To 60 MW of Low-Cost Power in South Carolina Greenidge Planning Development of 60 MW Data Center on its South Carolina Property Builds on Recent Addition of 40 MW o

Greenidge Announces Continued Expansion of Power Capacity; Company Has Secured Access To 60 MW of Low-Cost Power in South Carolina Greenidge Planning Development of 60 MW Data Center on its South Carolina Property Builds on Recent Addition of 40 MW of Low-Cost Power in Mississippi and North Dakota Dresden, NY – April 4, 2024 – Greenidge Generation Holdings Inc.

March 28, 2024 EX-99.1

Greenidge Generation Announces Fourth Quarter Results Will Meet or Exceed Preliminary Results Company Reschedules Fourth Quarter and Full-Year 2023 Earnings Release and Conference Call

Greenidge Generation Announces Fourth Quarter Results Will Meet or Exceed Preliminary Results Company Reschedules Fourth Quarter and Full-Year 2023 Earnings Release and Conference Call Dresden, NY – March 27, 2024 – Greenidge Generation Holdings Inc.

March 28, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 March 27, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-408

March 27, 2024 NT 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 12b-25 NOTIFICATION OF LATE FILING (Check one): [X]Form 10-K [ ]Form 20-F [ ]Form 11-K [ ] Form 10-Q [ ] Form N-SAR [ ]Form N-CSR

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, DC 20549 FORM 12b-25 NOTIFICATION OF LATE FILING (Check one): [X]Form 10-K [ ]Form 20-F [ ]Form 11-K [ ] Form 10-Q [ ] Form N-SAR [ ]Form N-CSR For Period Ended: December 31, 2023 [ ]Transition Report on Form 10-K [ ]Transition Report on Form 20-F [ ]Transition Report on Form 11-K [ ]Transition Report on Form 10-Q [ ]Transition Report on Form N-SAR For the Transition Period Ended: Nothing in this form shall be construed to imply that the Commission has verified any information contained herein.

March 11, 2024 EX-99.1

Greenidge Announces Expansion of Power Capacity with 40 MW of Low-Cost Power in Key Territories Acquires 12-Acre Property in Mississippi with Power Expandable to 32.5 MW Secures Lease in North Dakota with Access to 7.5 MW of Power Latest Expansions U

Greenidge Announces Expansion of Power Capacity with 40 MW of Low-Cost Power in Key Territories Acquires 12-Acre Property in Mississippi with Power Expandable to 32.

March 11, 2024 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 March 6, 2024 Date of Report (date of earliest event reported) Greenidge Generation

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 March 6, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-4080

February 29, 2024 CORRESP

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February 29, 2024 VIA EDGAR United States Securities and Exchange Commission Division of Corporate Finance Office of Crypto Assets 100 F Street, N.

February 16, 2024 EX-10.1

Securities Purchase Agreement, dated February 12, 2024, by and between Greenidge Generation Holdings Inc. and Armistice Capital Master Fund Ltd. (incorporated by reference to Exhibit 10.1 to the Current Report on Form 8-K filed on February 16, 2024).

EXECUTION VERSION 4892-6472-8737, v. 8 SECURITIES PURCHASE AGREEMENT THIS SECURITIES PURCHASE AGREEMENT (this “Agreement”) is entered into and made effective as of February 12, 2024, by and between Greenidge Generation Holdings Inc., a Delaware corporation (the “Company”), and each purchaser identified on the signature pages hereto (each, including its successors and assigns, a “Purchaser” and col

February 16, 2024 8-K

Entry into a Material Definitive Agreement, Unregistered Sales of Equity Securities, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 February 12, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-

February 16, 2024 EX-99.1

Greenidge Generation Announces $6 Million Investment to Support Ongoing Business Transformation Dresden, NY – February 12, 2024 – Greenidge Generation Holdings Inc. (NASDAQ: GREE) (“Greenidge” or the "Company"), a vertically integrated cryptocurrency

Greenidge Generation Announces $6 Million Investment to Support Ongoing Business Transformation Dresden, NY – February 12, 2024 – Greenidge Generation Holdings Inc.

February 16, 2024 EX-10.3

Common Stock Purchase Warrant, dated February 14, 2024, issued by Greenidge Generation Holdings Inc. to Armistice Capital Master Fund Ltd. (incorporated by reference to Exhibit 10.3 to the Current Report on Form 8-K filed on February 16, 2024).

EXECUTION COPY NEITHER THIS SECURITY NOR THE SECURITIES FOR WHICH THIS SECURITY IS EXERCISABLE HAVE BEEN REGISTERED WITH THE SECURITIES AND EXCHANGE COMMISSION OR THE SECURITIES COMMISSION OF ANY STATE IN RELIANCE UPON AN EXEMPTION FROM REGISTRATION UNDER THE SECURITIES ACT OF 1933, AS AMENDED (THE “SECURITIES ACT”), AND, ACCORDINGLY, MAY NOT BE OFFERED OR SOLD EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OR PURSUANT TO AN AVAILABLE EXEMPTION FROM, OR IN A TRANSACTION NOT SUBJECT TO, THE REGISTRATION REQUIREMENTS OF THE SECURITIES ACT AND IN ACCORDANCE WITH APPLICABLE STATE SECURITIES LAWS.

February 16, 2024 EX-10.2

Pre-Funded Common Stock Purchase Warrant, dated February 14, 2024, issued by Greenidge Generation Holdings Inc. to Armistice Capital Master Fund Ltd. (incorporated by reference to Exhibit 10.2 to the Current Report on Form 8-K filed on February 16, 2024).

EXECUTION COPY PRE-FUNDED COMMON STOCK PURCHASE WARRANT GREENIDGE GENERATION HOLDINGS INC.

February 6, 2024 EX-99.1

Greenidge Generation Announces Favorable Preliminary Financial and Operating Results for the Fourth Quarter 2023 Select Results Include Q4 Net Income of $1.4 million to $2.4 million, Adjusted EBITDA of $1.6 million to $2.6 million, and Earnings Per S

Exhibit 99.1 Greenidge Generation Announces Favorable Preliminary Financial and Operating Results for the Fourth Quarter 2023 Select Results Include Q4 Net Income of $1.4 million to $2.4 million, Adjusted EBITDA of $1.6 million to $2.6 million, and Earnings Per Share of $0.18 to $0.32 Company Reports First Profitable Quarter in Two Years As Ongoing Transformation of Business Continues Complete Fou

February 6, 2024 8-K/A

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 February 1, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001

February 6, 2024 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 February 1, 2024 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-4

February 6, 2024 EX-99.1

Greenidge Generation Announces Favorable Preliminary Financial and Operating Results for the Fourth Quarter 2023 Select Results Include Q4 Net Income of $1.4 million to $2.4 million, Adjusted EBITDA of $1.6 million to $2.6 million, and Earnings Per S

Exhibit 99.1 Greenidge Generation Announces Favorable Preliminary Financial and Operating Results for the Fourth Quarter 2023 Select Results Include Q4 Net Income of $1.4 million to $2.4 million, Adjusted EBITDA of $1.6 million to $2.6 million, and Earnings Per Share of $0.18 to $0.32 Company Reports First Profitable Quarter in Two Years As Ongoing Transformation of Business Continues Complete Fou

December 12, 2023 EX-10.3

Stock Purchase Warrant, dated December 11, 2023, issued by Greenidge Generation Holdings Inc. to Infinite Reality, Inc. (incorporated by reference to Exhibit 10.3 to the Current Report on Form 8-K filed on December 12, 2023).

Exhibit 10.3 Issue Date: December 11, 2023 THE SECURITIES REPRESENTED BY THIS INSTRUMENT HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR QUALIFIED UNDER APPLICABLE STATE SECURITIES LAWS AND MAY NOT BE SOLD, TRANSFERRED, ASSIGNED, PLEDGED OR HYPOTHECATED UNLESS AND UNTIL REGISTERED UNDER SUCH ACT AND QUALIFIED UNDER APPLICABLE STATE SECURITIES LAWS, OR UNLESS THE CORPORATI

December 12, 2023 EX-10.1

Master Services Agreement, dated December 11, 2023, by and between Greenidge Generation Holdings Inc. and Infinite Reality, Inc. (incorporated by reference to Exhibit 10.1 to the Current Report on Form 8-K filed on December 12, 2023).

Exhibit 10.1 MASTER SERVICES AGREEMENT This Master Services Agreement (this “Agreement”), effective as of December 11, 2023 (“Effective Date”), is entered into by and between Greenidge Generation Holdings Inc., a Delaware corporation (“Greenidge”), and Infinite Reality, Inc., a Delaware corporation (“IR,” and together with Greenidge, the “Parties,” and each of the, a “Party”). WHEREAS, IR is in th

December 12, 2023 EX-10.4

Warrant to Purchase Shares of Common Stock, dated December 11, 2023, issued by Infinite Reality, Inc. to Greenidge Generation Holdings Inc. (incorporated by reference to Exhibit 10.4 to the Current Report on Form 8-K filed on December 12, 2023).

Exhibit 10.4 THIS WARRANT AND THE SECURITIES ISSUABLE UPON THE EXERCISE HEREOF HAVE NOT BEEN REGISTERED UNDER THE SECURITIES ACT OF 1933, AS AMENDED. THEY MAY NOT BE SOLD, OFFERED FOR SALE, PLEDGED, HYPOTHECATED, OR OTHERWISE TRANSFERRED EXCEPT PURSUANT TO AN EFFECTIVE REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933, AS AMENDED, OR AN OPINION OF COUNSEL SATISFACTORY TO THE COMPANY THAT REG

December 12, 2023 EX-10.2

Equity Exchange Agreement, dated December 11, 2023, by and between Greenidge Generation Holdings Inc. and Infinite Reality, Inc. (incorporated by reference to Exhibit 10.2 to the Current Report on Form 8-K filed on December 12, 2023).

Exhibit 10.2 EQUITY EXCHANGE AGREEMENT THIS EQUITY EXCHANGE AGREEMENT (this “Agreement”) is entered into as of December 11, 2023 by and among Infinite Reality, Inc., a Delaware corporation (“Infinite Reality”) and Greenidge Generation Holdings Inc., a Delaware corporation (“Greenidge,” and collectively with Infinite Reality, the “Parties,” and each, sometimes, a “Party”). WHEREAS, simultaneously h

December 12, 2023 EX-99.1

Greenidge Generation Holdings and Infinite Reality Announce New Partnership and Equity Swap Greenidge Will be the Exclusive Provider of Specialized Infrastructure for Infinite Reality, Including Datacenter GPUs for AI and Immersive Experiences Via th

Exhibit 99.1 Greenidge Generation Holdings and Infinite Reality Announce New Partnership and Equity Swap Greenidge Will be the Exclusive Provider of Specialized Infrastructure for Infinite Reality, Including Datacenter GPUs for AI and Immersive Experiences Via the Launch of “GreenidgeAI” Infinite Reality Will Further Support Greenidge’s Growth by Utilizing Its Low-Cost Power and Superior Engineeri

December 12, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 December 11, 2023 Date of Report (date of earliest event reported) Greenidge Genera

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 December 11, 2023 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-

November 20, 2023 EX-99.1

Exhibit 99.1 1 Greenidge Announces Leadership Transition Jordan Kovler Appointed Chief Executive Officer David Anderson to Transition to Chairman of the Board of Directors Fairfield, Conn. – November 16, 2023 – Greenidge Generation Holdings Inc. (NAS

Exhibit 99.1 1 Greenidge Announces Leadership Transition Jordan Kovler Appointed Chief Executive Officer David Anderson to Transition to Chairman of the Board of Directors Fairfield, Conn. – November 16, 2023 – Greenidge Generation Holdings Inc. (NASDAQ: GREE) (“Greenidge” or the “Company”), a vertically integrated cryptocurrency datacenter and power generation company, today announced that Jordan

November 20, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 November 16, 2023 Date of Report (date of earliest event reported) Greenidge Genera

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 November 16, 2023 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-

November 14, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2023 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-40808 Green

November 14, 2023 EX-10.9

Real Estate Purchase and Sale Agreement dated November 9, 2023, by and among (i) SC 1 Mining Site LLC, (ii) Greenidge Generation Holdings Inc. ("Holdings"), (iii) Greenidge South Carolina LLC, a wholly-owned direct Subsidiary of Holdings ("Property Seller Parent"), (iv) 300 Jones Road LLC, a wholly-owned indirect Subsidiary of Property Seller Parent, and (v) each of the wholly-owned direct and indirect Subsidiaries of Holdings listed on Annex I of the APA (incorporated by reference to Exhibit 10.9 to the Quarterly Report Form 10-Q filed on November 14, 2023).

Execution Version REAL ESTATE PURCHASE AND SALE AGREEMENT BY AND AMONG SC 1 MINING SITE LLC, GREENIDGE GENERATION HOLDINGS INC.

November 14, 2023 EX-10.10

Transition Services Agreement, dated November 9, 2023, by and between SC 1 Mining Site LLC and Greenidge Generation Holdings Inc. (incorporated by reference to Exhibit 10.10 to the Quarterly Report on Form 10-Q filed on November 14, 2023).

Execution Version TRANSITION SERVICES AGREEMENT THIS TRANSITION SERVICES AGREEMENT (this “Agreement”), dated as of November 9, 2023, (the “Effective Date”), is hereby entered into by and between SC 1 Mining Site LLC, a Delaware limited liability company (“NYDIG”) and Greenidge Generation Holdings Inc.

November 14, 2023 EX-10.11

Hosting Order Termination Agreement, dated November 9, 2023, between Greenidge South Carolina LLC, and SC 1 Mining LLC (incorporated by reference to Exhibit 10.11 to the Quarterly Report on Form 10-Q filed on November 14, 2023).

Execution Version 1 HOSTING ORDER TERMINATION AGREEMENT SPARTANBURG This TERMINATION AGREEMENT (the “Agreement”) is entered into as of November 9, 2023 (the “Effective Date”), between Greenidge South Carolina LLC, a Delaware limited liability company (“Host”), and SC 1 Mining LLC (formerly known as NYDIG Mining Equipment SPV 28 LLC, formerly known as Rigs 4 LLC), a Delaware limited liability company (“SC 1 Mining”).

November 14, 2023 EX-99.1

Unaudited Pro Forma Financial Information for the South Carolina Facility Sale

Greenidge Generation Holdings Inc. Unaudited Pro Forma Condensed Consolidated Financial Information On November 9, 2023, Greenidge Generation Holdings Inc. (“Greenidge”) entered into a Debt Settlement Agreement (the “Debt Settlement Agreement”), by and among, Greenidge, Greenidge Generation LLC, other subsidiary borrowers of Greenidge and NYDIG ABL LLC (“NYDIG”) in order to settle the Senior Secur

November 14, 2023 EX-10.8

Asset Purchase Agreement (the “APA”), dated November 9, 2023, by and among (i) NYDIG ABL LLC ("NYDIG"), (ii) SC 1 Mining Site LLC, an Affiliate of NYDIG, (iii) Greenidge Generation Holdings Inc. ("Holdings"), (iv) Greenidge South Carolina, LLC, a wholly-owned direct subsidiary of Holdings ("Property Seller Parent"), (v) 300 Jones Road LLC, a wholly-owned indirect subsidiary of Property Seller Parent, and (vi) each of the wholly-owned direct and indirect Subsidiaries of Holdings listed on Annex I thereto (incorporated by reference to Exhibit 10.8 of the Quarterly Report on Form 10-Q filed on November 14, 2023).

Execution Version ASSET PURCHASE AGREEMENT by and among NYDIG ABL LLC, SC 1 MINING SITE LLC, GREENIDGE GENERATION HOLDINGS INC.

November 14, 2023 EX-99.2

Press Release dated November 14, 2023 with Third Quarter results

Exhibit 99.2 Greenidge Generation Reports Third Quarter 2023 Third Quarter 2023 Highlights •Total revenue was $20.9 million •Cryptocurrency datacenter hosting revenue was $12.1 million, and Cryptocurrency datacenter self-mining revenue was $6.6 million •GAAP net loss from continuing operations was $13.2 million •Break-even Adjusted EBITDA from continuing operations •235 bitcoins were produced from

October 25, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 October 25, 2023 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-4

October 25, 2023 EX-99.1

Greenidge Generation Announces Selected Preliminary Financial and Operating Results for the Third Quarter 2023

Exhibit 99.1 Greenidge Generation Announces Selected Preliminary Financial and Operating Results for the Third Quarter 2023 Fairfield, Conn. – October 25, 2023 – Greenidge Generation Holdings Inc. (NASDAQ: GREE) (“Greenidge”), a vertically integrated cryptocurrency datacenter and power generation company, today announced selected preliminary financial and operating results for the third quarter of

October 19, 2023 CORRESP

October 19, 2023

October 19, 2023 Division of Corporate Finance Office of Crypto Assets United States Securities and Exchange Commission 100 F Street, N.

October 17, 2023 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 October 11, 2023 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-4

October 6, 2023 CORRESP

October 6, 2023

October 6, 2023 Division of Corporate Finance Office of Crypto Assets United States Securities and Exchange Commission 100 F Street, N.

September 12, 2023 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 September 11, 2023 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001

August 23, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 August 21, 2023 Date of Report (date of earliest event reported) Greenidge Generati

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 August 21, 2023 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-40

August 23, 2023 EX-10.8

Amendment No. 4 to Amended and Restated Bridge Promissory Note, dated as of August 21, 2023, by and among Greenidge Generation Holdings Inc., NYDIG ABL LLC, and the Guarantors identified therein (incorporated by reference to Exhibit 10.8 to the Current Report on Form 8-K filed on August 23, 2023).

Execution Version 4888-9087-0896, v. 9 4868-8758-9222v.14 AMENDMENT NO. 4 TO AMENDED AND RESTATED BRIDGE PROMISSORY NOTE This Amendment No. 4 to Amended and Restated Bridge Promissory Note (this “Amendment”), dated as of August 21, 2023, is by and among GREENIDGE GENERATION HOLDINGS INC., a Delaware corporation (the “Borrower”), NYDIG ABL LLC, a Delaware limited liability company, or its successor

August 23, 2023 EX-10.7

Amendment No. 2 to Senior Secured Loan Agreement dated as of August 21, 2023

Execution Version 4857-0254-4496, v. 10 4888-5005-2204v.14 AMENDMENT NO. 2 TO SENIOR SECURED LOAN AGREEMENT This AMENDMENT NO. 2 TO SENIOR SECURED LOAN AGREEMENT (this “Amendment”), dated as of August 21, 2023, is entered into by and among Greenidge Generation Holdings Inc., a Delaware corporation (the “Borrower Representative”) and Greenidge Generation LLC, a New York limited liability company (“

August 14, 2023 EX-99.1

Greenidge Completes Expansion of South Carolina Mining Facility to 44 MW Expects to Eliminate Remaining $22 Million of Secured Debt by Selling South Carolina Mining Site to NYDIG Greenidge Expects to Receive $4.9 million of Cash, Less Certain Costs,

Exhibit 99.1 Greenidge Completes Expansion of South Carolina Mining Facility to 44 MW Expects to Eliminate Remaining $22 Million of Secured Debt by Selling South Carolina Mining Site to NYDIG Greenidge Expects to Receive $4.9 million of Cash, Less Certain Costs, with Potential to Earn up to $2.6 million Additional Cash in Bonus Payments Greenidge Generation Reports Second Quarter 2023 South Caroli

August 14, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2023 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-40808 Greenidge

August 14, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 August 14, 2023 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-40

August 14, 2023 EX-10.7

Limited Waiver to the Senior Secured Loan Agreement by and among Greenidge Generation Holdings Inc. and Greenidge Generation LLC and NYDIG ABL LLC, dated as of August 11, 2023.

nydig-greenidgex2023limi August 11, 2023 Via Electronic Mail Greenidge Generation Holdings Inc.

August 14, 2023 DEF 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant  ☐ Check the appropriate box:  ☐ Preliminary Proxy Statement  ☐ Confidential, For Use of the Commission Only (as permitted by Rule

August 4, 2023 PRE 14A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. )

TABLE OF CONTENTS UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14A Proxy Statement Pursuant to Section 14(a) of the Securities Exchange Act of 1934 (Amendment No. ) Filed by the Registrant ☒ Filed by a Party other than the Registrant  ☐ Check the appropriate box: ☒ Preliminary Proxy Statement  ☐ Confidential, For Use of the Commission Only (as permitted by Rule

August 3, 2023 CORRESP

August 3, 2023

August 3, 2023 Division of Corporate Finance Office of Crypto Assets United States Securities and Exchange Commission 100 F Street, N.

July 13, 2023 CORRESP

July 13, 2023

July 13, 2023 Division of Corporate Finance Office of Crypto Assets United States Securities and Exchange Commission 100 F Street, N.

June 16, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 June 15, 2023 Date of Report (date of earliest event reported) Greenidge Generation

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 June 15, 2023 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-4080

May 26, 2023 EX-99.1

Greenidge Generation Holdings Inc. Amended and Restated 2021 Equity Incentive Plan.

Exhibit 99.1 GREENIDGE GENERATION HOLDINGS INC. AMENDED AND RESTATED 2021 EQUITY INCENTIVE PLAN 1.Purpose; Eligibility. 1.1 General Purpose. The name of this plan is the Amended and Restated Greenidge Generation Holdings Inc. 2021 Equity Incentive Plan (the “Plan”). The purposes of the Plan are to (a) enable Greenidge Generation Holdings Inc., a Delaware corporation (the “Company”), and any Affili

May 26, 2023 S-8

As filed with the Securities and Exchange Commission on May 26, 2023

As filed with the Securities and Exchange Commission on May 26, 2023 Registration No.

May 26, 2023 EX-FILING FEES

Filing Fee Table.

Exhibit 107.1 Calculation of Filing Fee Table S-8 (Form Type) GREENIDGE GENERATION HOLDINGS INC. (Exact Name of Registrant as Specified in its Charter) Table I: Newly Registered Securities Security Type Security Class Title Fee Calculation Rule Amount Registered Proposed Maximum Offering Price Per Share Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity Class A common stoc

May 24, 2023 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): May 18 2023 Greenidge Generation Holdings Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-40808 86-1746728 (State or Other Jurisdiction of Incorporation) (Com

May 15, 2023 8-K

Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year, Material Modification to Rights of Security Holders, Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 May 15, 2023 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-40808

May 15, 2023 EX-99.1

Greenidge Generation’s 1-for-10 Reverse Stock Split Will Become Effective The Company’s Class A common stock will begin trading on a split-adjusted basis on May 16, 2023

Exhibit 99.1 Greenidge Generation’s 1-for-10 Reverse Stock Split Will Become Effective The Company’s Class A common stock will begin trading on a split-adjusted basis on May 16, 2023 Fairfield, Conn. – May 15, 2023 – Greenidge Generation Holdings Inc. (NASDAQ: GREE) (“Greenidge” or the “Company”), a vertically integrated cryptocurrency datacenter and power generation company, today announced that

May 15, 2023 EX-99.1

Greenidge Generation Reports First Quarter 2023

Exhibit 99.1 Greenidge Generation Reports First Quarter 2023 First Quarter 2023 Highlights •Results in line with guidance provided on April 21, 2023 •Total revenue was $15.2 million •Cryptocurrency datacenter hosting revenue was $6.9 million, and Cryptocurrency datacenter self-mining revenue was $6.5 million •GAAP net loss from continuing operations was $8.8 million •Adjusted EBITDA loss from cont

May 15, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 May 15, 2023 Date of Report (date of earliest event reported) Greenidge Generation

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 May 15, 2023 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-40808

May 15, 2023 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended March 31, 2023 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-40808 Greenidge

May 15, 2023 EX-3.1

Certificate of Amendment to the Second Amended and Restated Certificate of Incorporation of Greenidge Generation Holdings Inc., effective May 16, 2023 (incorporated by reference to Exhibit 3.1 to the Current Report on Form 8-K filed on May 5, 2023)

Exhibit 3.1 CERTIFICATE OF AMENDMENT TO THE AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF GREENIDGE GENERATION HOLDINGS INC. Greenidge Generation Holdings Inc. (the “Corporation”), a corporation duly organized and existing under the Delaware General Corporation Law (the “DGCL”), does hereby certify that: First. The amendment to the Corporation’s Amended and Restated Certificate of Incorpora

May 12, 2023 EX-16.1

Letter of Armanino LLP, dated May 12, 2023, to the SEC regarding statements included in Form 8-K (incorporated by

Exhibit 16.1 Armanino LLP 15950 N. Dallas Parkway Suite 600 Dallas, TX 75248-6685 972 661 1843 main armaninoLLP.com May 12, 2023 Securities and Exchange Commission 100 F Street, N.E. Washington, DC 20549 Commissioners: We have read the statements made by Greenidge Generation Holdings Inc. included under Item 4.01(a) of its Form 8-K dated May 12, 2023, and we agree with the statements concerning ou

May 12, 2023 8-K

Financial Statements and Exhibits, Changes in Registrant's Certifying Accountant

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 May 12, 2023 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-40808

April 24, 2023 DEF 14C

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14C SCHEDULE 14C INFORMATION Information Statement Pursuant to Section 14(c) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14C SCHEDULE 14C INFORMATION Information Statement Pursuant to Section 14(c) of the Securities Exchange Act of 1934 (Amendment No. ) Check the appropriate box: ☐ Preliminary Information Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14c-5(d)(2)) ☒ Definitive Information Statement Greeni

April 21, 2023 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 April 21, 2023 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-408

April 21, 2023 EX-99.1

Greenidge Generation Announces Selected Preliminary Financial and Operating Results for First Quarter 2023

Exhibit 99.1 Greenidge Generation Announces Selected Preliminary Financial and Operating Results for First Quarter 2023 Fairfield, Conn. – April 21, 2023 – Greenidge Generation Holdings Inc. (NASDAQ: GREE) (“Greenidge”), a vertically integrated cryptocurrency datacenter and power generation company, today announced selected preliminary financial and operating results for the first quarter of 2023.

April 18, 2023 10-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No. 1)

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K/A (Amendment No. 1) (Mark One) x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission File Number 001-4

April 13, 2023 PREC14C

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14C SCHEDULE 14C INFORMATION Information Statement Pursuant to Section 14(c) of the Securities Exchange Act of 1934 (Amendment No. )

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 14C SCHEDULE 14C INFORMATION Information Statement Pursuant to Section 14(c) of the Securities Exchange Act of 1934 (Amendment No. ) Check the appropriate box: ☒ Preliminary Information Statement ☐ Confidential, for Use of the Commission Only (as permitted by Rule 14c-5(d)(2)) ☐ Definitive Information Statement Greeni

March 31, 2023 EX-10.30

Letter Agreement, dated October 10, 2022, between Greenidge Generation Holdings Inc. and Jeffrey Kirt

Exhibit 10.30 October 10, 2022 BY EMAIL Dear Jeff: This letter agreement (this “Letter”) confirms the changes to your relationship with Greenidge Generation Holdings Inc. (the “Company”) and its subsidiaries and affiliates (together with the Company, the “Company Group”). You and the Company agree that this Letter represents the full and complete understanding concerning your separation of employm

March 31, 2023 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 10-K (Mark One) x ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM TO Commission File Number 001-40808 Greenidge Gener

March 31, 2023 EX-99.1

Greenidge Generation Reports Fourth Quarter and Full Year 2022

Exhibit 99.1 Greenidge Generation Reports Fourth Quarter and Full Year 2022 Fourth Quarter 2022 Highlights •Total revenue was $16.0 million, compared to January 2023 guidance of ~$15 million •Cryptocurrency datacenter revenue was $12.2 million, in line with January 2023 guidance •Produced 683 bitcoins in the fourth quarter •GAAP net loss from continuing operations of $135.0 million for the fourth

March 31, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 March 31, 2023 Date of Report (date of earliest event reported) Greenidge Generatio

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 March 31, 2023 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-408

March 31, 2023 EX-10.28

Offer Letter, dated October 7, 2022, between Greenidge Generation Holdings Inc. and Scott MacKenzie

Exhibit 10.28 October 7, 2022 Scott MacKenzie BY EMAIL Dear Scott: We are very pleased to offer you the opportunity to join Greenidge Generation Holdings Inc., a Delaware corporation (the “Company”), as Chief Strategy Officer, reporting directly to the Chief Executive Officer of the Company, effective October 8, 2022 (the “Start Date”). You will have the duties and responsibilities commensurate wi

March 31, 2023 EX-21.1

(incorporated by reference to Exhibit 21.1 of the Company’s Form 10-K filed on March 31, 202

Exhibit 21.1 List of Subsidiaries Greenidge Generation Holdings Inc.’s subsidiaries are listed below. Name of Subsidiary Jurisdiction of Formation Greenidge Generation LLC New York Lockwood Hills LLC New York Greenidge Solar LLC Delaware Greenidge Pipeline LLC Delaware Greenidge Pipeline Properties Corporation New York Greenidge Markets and Trading LLC Delaware Greenidge Generation Blocker Inc. De

March 31, 2023 EX-10.27

Offer Letter, dated October 7, 2022, between Greenidge Generation Holdings Inc. and David Anderson (incorporated by reference to Exhibit 10.27 to the Annual Report on Form 10-K filed on March 31, 2023).

Exhibit 10.27 October 7, 2022 David Anderson BY EMAIL Dear Dave: We are very pleased to offer you the opportunity to join Greenidge Generation Holdings Inc., a Delaware corporation (the “Company”), as Chief Executive Officer, reporting directly to the Board of Directors of the Company (the “Board”), effective October 8, 2022 (the “Start Date”). You will have the duties and responsibilities commens

March 27, 2023 8-K

Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 March 22, 2023 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-408

March 27, 2023 EX-99.1

Greenidge Generation Appoints Jordan Kovler to Board of Directors

Exhibit 99.1 For Immediate Release March 27, 2023 Greenidge Generation Appoints Jordan Kovler to Board of Directors FAIRFIELD, CT – March 27, 2023 – Greenidge Generation Holdings Inc. (NASDAQ: GREE) (“Greenidge”), a vertically integrated cryptocurrency datacenter and power generation company, has appointed Jordan Kovler, a seasoned leader in investor relations and corporate governance with two dec

February 9, 2023 SC 13D

GREE / Greenidge Generation Holdings Inc Class A / Atlas Capital Resources (A9) LP - SC 13D Activist Investment

SC 13D UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13D Under the Securities Exchange Act of 1934* Greenidge Generation Holdings Inc. (Name of Issuer) Class A Common Stock, par value $0.0001 per share (Title of Class of Securities) 39531G 100 (CUSIP Number) Michael O’Donnell, Esq. Atlas FRM LLC 100 Northfield Street Greenwich, Connecticut 06830 Telephone: (203)

February 9, 2023 EX-99.1

JOINT FILING AGREEMENT PURSUANT TO RULE 13d-1(k)(1)

EX-99.1 Exhibit 99.1 JOINT FILING AGREEMENT PURSUANT TO RULE 13d-1(k)(1) THIS JOINT FILING AGREEMENT is entered into as of February 9, 2023, by and among the parties hereto. The undersigned hereby agree that the Statement on Schedule 13D with respect to the shares of Class A Common Stock, par value $0.0001, of Greenidge Generation Holdings Inc. and any amendment thereafter signed by each of the un

January 31, 2023 EX-10.6

Consent and Amendment No. 1 to Amended and Restated Bridge Promissory Note, dated as of January 30, 2023, between Greenidge Generation Holdings Inc. and B. Riley Commercial Capital, LLC (incorporated by reference to Exhibit 10.6 of the Company’s Form 8-K filed on January 30, 2023).

Exhibit 10.6 CONSENT AND AMENDMENT NO. 1 TO AMENDED AND RESTATED BRIDGE PROMISSORY NOTE Consent and Amendment No. 1 Amended and Restated Bridge Promissory Note (this "Amendment"), dated as of January 30, 2023 (the “Effective Date”) between GREENIDGE GENERATION HOLDINGS INC., a Delaware corporation (the “Borrower”) and B. RILEY COMMERCIAL CAPITAL, LLC, a Delaware limited liability company, or its a

January 31, 2023 EX-10.1

Debt Settlement Agreement, dated as of January 30, 2023, by and among Greenidge Generation Holdings Inc., Greenidge Generation LLC, the other Subsidiaries of Greenidge Generation Holdings Inc., and NYDIG ABL LLC (incorporated by reference to Exhibit 10.1 of the Company’s Form 8-K filed on January 30, 2023).

Exhibit 10.1 DEBT SETTLEMENT AGREEMENT THIS DEBT SETTLEMENT AGREEMENT (this “Agreement”), dated as of January 30, 2023, is entered into by and among Greenidge Generation Holdings Inc., a Delaware corporation (the “Parent Borrower”) and Greenidge Generation LLC, a New York limited liability company (“Generation Borrower”), the other Subsidiaries of Parent Borrower, as Loan Parties (as defined below

January 31, 2023 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant, Results of Operations and Financial Condition, Completion of Acquisition or Disposition of Assets

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 January 30, 2023 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-4

January 31, 2023 EX-10.2

Senior Secured Loan Agreement, dated as of January 30, 2023, by and among Greenidge Generation Holdings Inc., Greenidge Generation LLC, the Guarantors from time to time party thereto, the Lenders from time to time party thereto, and NYDIG ABL LLC (incorporated by reference to Exhibit 10.2 of the Company’s Form 8-K filed on January 30, 2023).

Exhibit 10.2 SENIOR SECURED LOAN AGREEMENT dated as of January 30, 2023 by and among Greenidge Generation Holdings Inc., as a Borrower and Borrower Representative and Greenidge Generation LLC as a Borrower, the Guarantors from time to time party hereto, the Lenders from time to time party hereto, and NYDIG ABL LLC, as Administrative Agent and Collateral Agent 4885-4330-5790v.25 TABLE OF CONTENTS P

January 31, 2023 EX-99.1

Greenidge Generation Restructures and Significantly Reduces Secured Debt Greenidge Restructures ~$76 Million of Secured Debt with NYDIG, Reducing Obligations to ~$17 Million, With Potential for Additional $10 Million Reduction Greenidge Restructures

Exhibit 99.1 Greenidge Generation Restructures and Significantly Reduces Secured Debt Greenidge Restructures ~$76 Million of Secured Debt with NYDIG, Reducing Obligations to ~$17 Million, With Potential for Additional $10 Million Reduction Greenidge Restructures B. Riley $11 Million Promissory Note, Reducing Cash Obligations to ~$9 Million Enters into Hosting Agreements with NYDIG Affiliates With

January 31, 2023 EX-10.3

Membership Interest and Asset Purchase Agreement, dated January 30, 2023, by and among NYDIG ABL LLC, Greenidge Generation Holdings Inc., Greenidge Generation LLC, GSC Collateral LLC, and GNY Collateral LLC (incorporated by reference to Exhibit 10.3 of the Company’s Form 8-K filed on January 30, 2023).

Exhibit 10.3 MEMBERSHIP INTEREST AND ASSET PURCHASE AGREEMENT by and among NYDIG ABL LLC, GREENIDGE GENERATION HOLDINGS INC., GREENIDGE GENERATION LLC, GSC COLLATERAL LLC, GNY COLLATERAL LLC and GREENIDGE SOUTH CAROLINA LLC Dated as of January 30, 2023 4855-7789-2676v.22 TABLE OF CONTENTS Page Section 1. CERTAIN DEFINITIONS 2 1.1 Certain Definitions 2 1.2 Interpretation 6 Section 2. PURCHASE AND S

January 31, 2023 EX-10.5

Board Observation Rights Letter, dated as of January 30, 2023, between Greenidge Generation Holdings Inc. and NYDIG ABL LLC (incorporated by reference to Exhibit 10.5 of the Company’s Form 8-K filed on January 30, 2023).

EX-10.5 6 exhibit105greex2023x01x30.htm EX-10.5 Exhibit 10.5 BOARD OBSERVATION RIGHTS LETTER GREENIDGE GENERATION HOLDINGS Inc. January 30, 2023 New York Digital Investment Group 510 Madison Avenue, 21st Floor New York, New York 10022 Attn: Trevor Smith Email: [email protected] Re: Board Observation Rights Ladies and Gentlemen: In order to induce the Agent and the Lenders to enter into that c

January 31, 2023 EX-10.4

Form of Hosting Services Agreement, dated as of January 30, 2023, between Greenidge South Carolina LLC and separate NYDIG subsidiaries (incorporated by reference to Exhibit 10.4 of the Company’s Form 8-K filed on January 30, 2023).

Exhibit 10.4 HOSTING SERVICES AGREEMENT This Hosting Services Agreement (“General Terms Agreement”) effective as of January 30, 2023 (“Effective Date”) is between Greenidge South Carolina LLC, a Delaware limited liability company (“Host”), [●], a Delaware limited liability company (“Client”). A. Client desires access to locate its Client Equipment (as defined in the particular Hosting Agreement Or

January 20, 2023 EX-10.1

Limited Waiver and Amendment of Loan Documents dated as of January 20, 2023, by and among Greenidge Generation Holdings, Inc., Greenidge Generation LLC, GTX GEN 1 Collateral, LLC, GSC Collateral LLC, and GNY Collateral LLC and NYDIG ABL LLC and NYDIG Trust Company LLC

Exhibit 10.1 January 20, 2023 Via Electronic Mail Greenidge Generation Holdings Inc., Greenidge Generation LLC, GTX Gen 1 Collateral LLC, GNY Collateral LLC, GSC Collateral LLC, 135 Rennell Drive, 3rd Floor Fairfield, CT 06890 Attention: Robert Loughran Re: Limited Waiver of Loan Documents Ladies and Gentlemen: Reference is hereby made to (i) that certain Master Equipment Finance Agreement, dated

January 20, 2023 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 January 20, 2023 Date of Report (date of earliest event reported) Greenidge Generat

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 January 20, 2023 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-4

January 20, 2023 EX-10.2

Waiver and Acknowledgement Letter dated as of January 20, 2023, by and among Greenidge Generation Holdings, Inc. and B Riley Commercial Capital, LLC.

Exhibit 10.2 B. RILEY COMMERCIAL CAPITAL, LLC 11100 Santa Monica Blvd., Ste 800 Los Angeles, California 90025 Dated: January 20, 2023 Greenidge Generation Holdings Inc. 135 Rennell Drive, 3rd Floor Fairfield, CT 06890 Attention: General Counsel Re: Amended and Restated Bridge Promissory Note – Second Amended and Restated Waiver and Acknowledgement Letter (this “Letter”) Ladies and Gentlemen: Refer

January 17, 2023 EX-10.1

Limited Waiver and Amendment of Loan Documents dated as of January 10, 2023, by and among Greenidge Generation Holdings, Inc., Greenidge Generation LLC, GTX GEN 1 Collateral, LLC, GSC Collateral LLC, and GNY Collateral LLC and NYDIG ABL LLC and NYDIG Trust Company LLC

Exhibit 10.1 January 10, 2023 Via Electronic Mail Greenidge Generation Holdings Inc., Greenidge Generation LLC, GTX Gen 1 Collateral LLC, GNY Collateral LLC, GSC Collateral LLC, 135 Rennell Drive, 3rd Floor Fairfield, CT 06890 Attention: Robert Loughran Re: Limited Waiver of Loan Documents Ladies and Gentlemen: Reference is hereby made to (i) that certain Master Equipment Finance Agreement, dated

January 17, 2023 EX-10.2

Waiver and Acknowledgement Letter dated as of January 13, 2023, by and among Greenidge Generation Holdings, Inc. and B Riley Commercial Capital, LLC.

Exhibit 10.2 B. RILEY COMMERCIAL CAPITAL, LLC 11100 Santa Monica Blvd., Ste 800 Los Angeles, California 90025 Dated: January 13, 2023 Greenidge Generation Holdings Inc. 135 Rennell Drive, 3rd Floor Fairfield, CT 06890 Attention: General Counsel Re: Amended and Restated Bridge Promissory Note – Amended and Restated Waiver and Acknowledgement Letter (this “Letter”) Ladies and Gentlemen: Reference is

January 17, 2023 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits, Other Events

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 January 10, 2023 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-4

December 30, 2022 EX-10.1

Limited Waiver and Amendment of Loan Documents dated as of December 23, 2022, by and among Greenidge Generation Holdings, Inc., Greenidge Generation LLC, GTX GEN 1 Collateral, LLC, GSC Collateral LLC, and GNY Collateral LLC and NYDIG ABL LLC and NYDIG Trust Company LLC

Exhibit 10.1 December 23, 2022 Via Electronic Mail Greenidge Generation Holdings Inc., Greenidge Generation LLC, GTX Gen 1 Collateral LLC, GNY Collateral LLC, GSC Collateral LLC, 135 Rennell Drive, 3rd Floor Fairfield, CT 06890 Attention: Robert Loughran Re: Limited Waiver and Amendment of Loan Documents Ladies and Gentlemen: Reference is hereby made to (i) the Master Equipment Finance Agreement,

December 30, 2022 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 December 23, 2022 Date of Report (date of earliest event reported) Greenidge Genera

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 December 23, 2022 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-

December 30, 2022 EX-10.2

, 2022, by and among Greenidge Generation Holdings, Inc. and B Riley Commercial Capital, LLC.

Exhibit 10.2 B. RILEY COMMERCIAL CAPITAL, LLC 11100 Santa Monica Blvd., Ste 800 Los Angeles, California 90025 Dated: December 29, 2022 Effective as of December 20, 2022 Greenidge Generation Holdings Inc. 135 Rennell Drive, 3rd Floor Fairfield, CT 06890 Attention: General Counsel Re: Amended and Restated Bridge Promissory Note ? Waiver and Acknowledgement Letter (this ?Letter?) Ladies and Gentlemen

December 20, 2022 EX-99.1

Greenidge Generation Executes Term Sheet with Secured Lender NYDIG Regarding Debt Renegotiations; Provides Liquidity Update

Exhibit 99.1 Greenidge Generation Executes Term Sheet with Secured Lender NYDIG Regarding Debt Renegotiations; Provides Liquidity Update Lender Negotiations Update •Entered into a non-binding term sheet with NYDIG regarding approximately $74 million of debt contemplating the following terms: ◦NYDIG would purchase miners with approximately 2.8 EH/s of mining capacity ◦Greenidge would enter into a h

December 20, 2022 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 December 20, 2022 Date of Report (date of earliest event reported) Greenidge Genera

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 December 20, 2022 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-

December 16, 2022 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 December 13, 2022 Date of Report (date of earliest event reported) Greenidge Genera

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 December 13, 2022 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-

November 14, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 November 14, 2022 Date of Report (date of earliest event reported) Greenidge Generation Holdings Inc. (Exact name of registrant as specified in its charter) Delaware (State or other jurisdiction of incorporation or organization) 001-

November 14, 2022 EX-99.1

Greenidge Generation Announces Financial and Operating Results for Third Quarter 2022 and Provides Operational Update for October 2022

Exhibit 99.1 Greenidge Generation Announces Financial and Operating Results for Third Quarter 2022 and Provides Operational Update for October 2022 Third Quarter 2022 ?Revenue of $29.4 million for the third quarter of 2022 ?Produced approximately 866 bitcoin during the third quarter ?Power plant uptime of 100.0% in third quarter, 99.9% YTD through September 30, 2022, and 98.3% LTM, including downt

November 14, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) x QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2022 OR o TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-40808 Green

October 31, 2022 EX-99.1

Form of Stock Option Inducement Award Agreement (incorporated by reference to Exhibit 99.1 to the Registration Statement on Form S-8 filed on October 31, 2022).

Exhibit 99.1 STOCK OPTION INDUCEMENT AWARD AGREEMENT This Stock Option Inducement Award Agreement (this “Agreement”) is made and entered into as of the Grant Date specified below by and between Greenidge Generation Holdings Inc., a Delaware corporation (the “Company”), and [ ] (the “Participant”). Grant Date: Expiration Date: Exercise Price: Number of Option Shares: Type of Option: Non-Qualified S

October 31, 2022 S-8

Second Amended and Restated Certificate of Incorporation of the Company (incorporated by reference to Exhibit 3.1 to the Company’s Registration Statement on Form S-8 filed on October 31, 2022)

As filed with the Securities and Exchange Commission on October 31, 2022 Registration No.

October 31, 2022 EX-3.1

Second Amended and Restated Certificate of Incorporation of Greenidge Generation Holdings Inc., dated September 6, 2022 (incorporated by reference to Exhibit 3.1 to the Registration Statement on Form S-8 filed on October 31, 2022).

Exhibit 3.1 AMENDED AND RESTATED CERTIFICATE OF INCORPORATION OF GREENIDGE GENERATION HOLDINGS INC. Greenidge Generation Holdings Inc., a corporation organized and existing under the General Corporation Law of the State of Delaware, does hereby certify as follows: 1. The name of the corporation is Greenidge Generation Holdings Inc. The original Certificate of Incorporation of the corporation was f

October 31, 2022 EX-FILING FEES

Filing Fee Table

Exhibit 107.1 Calculation of Filing Fee Table S-8 (Form Type) GREENIDGE GENERATION HOLDINGS INC. (Exact Name of Registrant as Specified in its Charter) Table I: Newly Issued Securities Security Type Security Class Title (1) Fee Calculation Rule Amount Registered Proposed Maximum Offering Price Per Share Maximum Aggregate Offering Price Fee Rate Amount of Registration Fee Equity Class A common stoc

October 12, 2022 8-K/A

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 4, 2022 Greenidge Gener

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K/A CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 4, 2022 Greenidge Generation Holdings Inc. (Exact Name of Registrant as Specified in its Charter) Delaware 001-40808 86-1746728 (State or Other Jurisdiction of Incorporation

October 11, 2022 EX-99.1

Six Months

Exhibit 99.1 Greenidge Generation Announces Leadership Transition, Board Changes and Selected Preliminary Financial and Operating Results for Third Quarter 2022 Leadership Transition ? Jeffrey Kirt to resign from his roles as CEO and Director, effective October 7, 2022 ? David Anderson appointed as CEO and Director, effective October 8, 2022 ? Scott MacKenzie appointed as Chief Strategy Officer, e

October 11, 2022 8-K

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 4, 2022 GREENIDGE GENERAT

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 4, 2022 GREENIDGE GENERATION HOLDINGS INC. (Exact Name of Registrant as Specified in its Charter) Delaware 001-40808 86-1746728 (State or Other Jurisdiction of Incorporation)

October 6, 2022 424B3

GREENIDGE GENERATION HOLDINGS INC. 10,458,474 Shares of Class A Common Stock

Table of Contents Filed Pursuant to Rule 424(b)(3) Registration No. 333-259247 PROSPECTUS GREENIDGE GENERATION HOLDINGS INC. 10,458,474 Shares of Class A Common Stock This prospectus relates to the resale of 10,458,474 shares of class A common stock, $0.0001 par value, of Greenidge Generation Holdings Inc. (?Greenidge?) that may be sold from time to time by the selling stockholders named in this p

October 5, 2022 424B5

Greenidge Generation Holdings Inc. Up to $22,800,000 Class A Common Stock

Table of Contents Filed Pursuant to Rule 424(b)(5) Registration No. 333-267506 PROSPECTUS SUPPLEMENT (To Prospectus dated October 3, 2022) Greenidge Generation Holdings Inc. Up to $22,800,000 Class A Common Stock We have entered into an at market issuance sales agreement, dated September 19, 2022, as amended by Amendment No. 1 to the sales agreement, dated as of October 3, 2022 (as amended, the ?s

October 4, 2022 8-K

Entry into a Material Definitive Agreement, Financial Statements and Exhibits

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): October 3, 2022 GREENIDGE GENERATION HOLDINGS INC. (Exact Name of Registrant as Specified in its Charter) Delaware 001-40808 86-1746728 (State or Other Jurisdiction of Incorporation)

October 4, 2022 EX-10.1

Amendment No. 1 to At Market Issuance Sales Agreement, dated October 3, 2022, by and among Greenidge Generation Holdings Inc., B. Riley Securities, Inc. and Northland Securities, Inc. (incorporated by reference to Exhibit 10.1 of the Company’s Form 8-K filed on October 4, 2022)

Exhibit 10.1 AMENDMENT NO. 1 TO AT MARKET ISSUANCE SALES AGREEMENT October 3, 2022 B. Riley Securities, Inc. 299 Park Avenue, 21st Floor New York, NY 10171 Ladies and Gentlemen: Greenidge Generation Holdings Inc. (the ?Company?) and B. Riley Securities, Inc. (the ?Agent,?) are parties to that certain At Market Issuance Sales Agreement dated September 19, 2022 (the ?Original Agreement?). All capita

September 30, 2022 CORRESP

September 30, 2022

September 30, 2022 Via EDGAR Division of Corporation Finance Securities and Exchange Commission 100 F Street, N.

September 30, 2022 POS AM

As filed with the Securities and Exchange Commission on September 30, 2022

Table of Contents As filed with the Securities and Exchange Commission on September 30, 2022 Registration No.

September 19, 2022 EX-FILING FEES

Filing Fee Table

Exhibit 107 Calculation of Filing Fee Table S-3 (Form Type) Greenidge Generation Holdings Inc.

September 19, 2022 S-3

As filed with the Securities and Exchange Commission on September 19, 2022

Table of Contents As filed with the Securities and Exchange Commission on September 19, 2022 Registration No.

September 19, 2022 EX-1.1

At Market Issuance Sales Agreement, dated September 19, 2022, by and among Greenidge Generation Holdings Inc., B. Riley Securities, Inc. and Northland Securities, Inc. (incorporated by reference to Exhibit 1.1 to the Company’s Registration Statement on Form S-3 filed on September 19, 2022)

Exhibit 1.1 GREENIDGE GENERATION HOLDINGS INC. COMMON STOCK At Market Issuance Sales Agreement September 19, 2022 B. Riley Securities, Inc. 299 Park Avenue, 21st Floor New York, New York 10171 Ladies and Gentlemen: Greenidge Generation Holdings Inc., a Delaware corporation (the ?Company?), confirms its agreement (this ?Agreement?) with B. Riley Securities, Inc. (?BRS?) as follows: 1. Issuance and

September 7, 2022 8-K

Submission of Matters to a Vote of Security Holders

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): September 06, 2022 Greenidge Generation Holdings Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-40808 86-1746728 (State or Other Jurisdiction of Incorporatio

August 15, 2022 8-K

Financial Statements and Exhibits, Results of Operations and Financial Condition

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): August 15, 2022 Greenidge Generation Holdings Inc. (Exact name of Registrant as Specified in Its Charter) Delaware 001-40808 86-1746728 (State or Other Jurisdiction of Incorporation)

August 15, 2022 EX-10.6

Consent and Amendment No. 1 to Amended and Restated Bridge Promissory Note, dated as of January 30, 2023, between Greenidge Generation Holdings Inc. and B. Riley Commercial Capital, LLC (incorporated by reference to Exhibit 10.6 of the Company’s Form 8-K filed on January 30, 2023).

Exhibit 10.6 AMENDED AND RESTATED BRIDGE PROMISSORY NOTE Amendment and Restatement Effective Date: August 10, 2022 (the ?Amendment and Restatement Effective Date?) Original Effective Date: March 18, 2022 (the ?Original Effective Date?) FOR VALUE RECEIVED, and subject to the terms and conditions set forth herein, GREENIDGE GENERATION HOLDINGS INC., a Delaware corporation (the ?Borrower?), hereby un

August 15, 2022 EX-10.7

Executive Employment Agreement, dated as of August 15, 2022, by and between Greenidge Generation Holdings Inc. and Dale Irwin (incorporated by reference to Exhibit 10.7 to the Quarterly Report on Form 10-Q filed on August 15, 2022).

Exhibit 10.7 EXECUTIVE EMPLOYMENT AGREEMENT This EXECUTIVE EMPLOYMENT AGREEMENT (this ?Agreement?), dated as of August 15, 2022, is by and between Greenidge Generation Holdings Inc., a Delaware corporation (the ?Company?), and Dale Irwin (?Executive?) (the Company and Executive collectively referred to as the ?Parties? or individually referred to as a ?Party?). WHEREAS, Executive is currently empl

August 15, 2022 EX-99.1

Greenidge Generation Announces Financial and Operating Results for Second Quarter 2022 and Provides Operational Update for July 2022

EXHIBIT 99.1 Greenidge Generation Announces Financial and Operating Results for Second Quarter 2022 and Provides Operational Update for July 2022 Second Quarter 2022 Highlights ? Revenue of $31.3 million for the second quarter of 2022 ? GAAP net loss of $(107.9) million for the quarter, impacted by $98.2 million of special items ? Adjusted EBITDA of $2.9 million for the quarter ? LTM Adjusted EBIT

August 15, 2022 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q (Mark One) ? QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended June 30, 2022 OR ? TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number: 001-40808 Greenidge

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