GREEL

SEC source: 0001193125-26-419119 · ownership.xml · nonDerivative · entry 1

Atlas Capital Resources GP LLC · CIK 0001882294 · Director · 10% owner

Atlas Capital GP LP · CIK 0001882313 · Director · 10% owner

Atlas Capital Resources (A9) LP · CIK 0001880358 · Director · 10% owner

BURSKY ANDREW M · CIK 0000905112 · Director · 10% owner

Fazio Timothy J · CIK 0001394403 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 7,176,541

F1 · kind: In connection with the Equity Interest Payment Agreement (the "Agreement"), dated as of January 24, 2025, by and among Greenidge Generation Holdings Inc. (the "Issuer") and Atlas Capital Resources (A9) LP ("ACR9"), Atlas Capital Resources (A9-Parallel) LP ("ACR Parallel"), and Atlas Capital Resources (P) LP ("ACR P" and, together with ACR9 and ACR Parallel, collectively, "Atlas"), the Issuer made a $163,598 payment to Atlas in the form of shares of Class A Common Stock based on the price formula set forth in the Agreement. Of the 67,183 shares of Class A Common Stock issued to Atlas thereunder, 48,143 shares were issued to ACR9, 17,279 shares were issued to ACR Parallel and 1,761 shares were issued to ACR P.

F1 · price: In connection with the Equity Interest Payment Agreement (the "Agreement"), dated as of January 24, 2025, by and among Greenidge Generation Holdings Inc. (the "Issuer") and Atlas Capital Resources (A9) LP ("ACR9"), Atlas Capital Resources (A9-Parallel) LP ("ACR Parallel"), and Atlas Capital Resources (P) LP ("ACR P" and, together with ACR9 and ACR Parallel, collectively, "Atlas"), the Issuer made a $163,598 payment to Atlas in the form of shares of Class A Common Stock based on the price formula set forth in the Agreement. Of the 67,183 shares of Class A Common Stock issued to Atlas thereunder, 48,143 shares were issued to ACR9, 17,279 shares were issued to ACR Parallel and 1,761 shares were issued to ACR P.

F2 · ownership.nature: Atlas Capital GP LP ("ACR GPLP") is the general partner of ACR9, ACR Parallel, ACR P and GGH Bridge Investment LP ("GGH"). Atlas Capital Resources GP LLC ("ACR GP") is the general partner of ACR GPLP. ACR GP, ACR GPLP, ACR9, ACR Parallel, ACR P, and GGH are collectively referred to as the "Atlas Entities." Andrew M. Bursky and Timothy J. Fazio are each a managing partner of ACR GP and may be deemed to control the Atlas Entities.

F3 · ownership.nature: Each of Messrs. Bursky and Fazio and each of the Atlas Entities disclaims beneficial ownership interest of the Class A Common Stock except, in each case, to the extent he or it has any pecuniary interest therein.

SEC source: 0001628280-26-061590 · wk-form4_1789160717.xml · derivative · entry 5

Rogers George Ted III · CIK 0001881667 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Class A Common Stock · 16,000 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · derivative.exercise_price: Represents the Reporting Person's voluntary conversion of 16,000 shares of Class B Common Stock into 16,000 shares of Class A Common Stock on a one-for-one basis for no additional consideration. The conversion was exempt from Section 16(b) pursuant to Rule 16b-6(b).

F4 · derivative.exercise_date: Represents the Reporting Person's voluntary conversion of 16,000 shares of Class B Common Stock into 16,000 shares of Class A Common Stock on a one-for-one basis for no additional consideration. The conversion was exempt from Section 16(b) pursuant to Rule 16b-6(b).

F4 · derivative.expiration_date: Represents the Reporting Person's voluntary conversion of 16,000 shares of Class B Common Stock into 16,000 shares of Class A Common Stock on a one-for-one basis for no additional consideration. The conversion was exempt from Section 16(b) pursuant to Rule 16b-6(b).

SEC source: 0001628280-26-061590 · wk-form4_1789160717.xml · nonDerivative · entry 4

Rogers George Ted III · CIK 0001881667 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,055,467

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F4 · date: Represents the Reporting Person's voluntary conversion of 16,000 shares of Class B Common Stock into 16,000 shares of Class A Common Stock on a one-for-one basis for no additional consideration. The conversion was exempt from Section 16(b) pursuant to Rule 16b-6(b).

F4 · price: Represents the Reporting Person's voluntary conversion of 16,000 shares of Class B Common Stock into 16,000 shares of Class A Common Stock on a one-for-one basis for no additional consideration. The conversion was exempt from Section 16(b) pursuant to Rule 16b-6(b).

SEC source: 0001628280-26-062889 · wk-form4a_1790021764.xml · nonDerivative · entry 2

NEUSCHELER MICHAEL P · CIK 0001111014 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 106,060

F2 · date: Represents restricted stock units granted as an annual equity retainer for service on the Issuer's Board of Directors and its committees pursuant to the Issuer's Fourth Amended and Restated 2021 Equity Incentive Plan. Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock. The award will vest in its entirety on the first anniversary of the grant date.

SEC source: 0001193125-26-390887 · ownership.xml · nonDerivative · entry 1

Atlas Capital Resources GP LLC · CIK 0001882294 · Director · 10% owner

Atlas Capital GP LP · CIK 0001882313 · Director · 10% owner

Atlas Capital Resources (A9) LP · CIK 0001880358 · Director · 10% owner

BURSKY ANDREW M · CIK 0000905112 · Director · 10% owner

Fazio Timothy J · CIK 0001394403 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 7,109,358

F1 · kind: In connection with the Subscription Agreement (the "Agreement"), dated as of July 19, 2026, by and between Vulcan Infrastructure and Power Inc. (f/k/a Greenidge Generation Holdings Inc.) (the "Issuer") and Atlas GREE Investment Holdco LLC ("Atlas GREE"), the Issuer agreed to issue 2,923,976 shares of Class A Common Stock (the "Shares") to Atlas GREE (or its assignees) in exchange for $5,000,000. On September 3, 2026, Atlas GREE assigned its rights to acquire the Shares to Atlas Capital Resources (A9) LP ("ACR9"), Atlas Capital Resources (A9-Parallel) LP ("ACR Parallel"), and Atlas Capital Resources (P) LP ("ACR P" and, together with ACR9 and ACR Parallel, collectively, "Atlas"). On September 10, 2026, the Issuer issued 2,095,299 shares of Class A Common Stock to ACR9, 752,030 shares of Class A Common Stock to ACR Parallel and 76,647 shares of Class A Common Stock to ACR P.

F1 · price: In connection with the Subscription Agreement (the "Agreement"), dated as of July 19, 2026, by and between Vulcan Infrastructure and Power Inc. (f/k/a Greenidge Generation Holdings Inc.) (the "Issuer") and Atlas GREE Investment Holdco LLC ("Atlas GREE"), the Issuer agreed to issue 2,923,976 shares of Class A Common Stock (the "Shares") to Atlas GREE (or its assignees) in exchange for $5,000,000. On September 3, 2026, Atlas GREE assigned its rights to acquire the Shares to Atlas Capital Resources (A9) LP ("ACR9"), Atlas Capital Resources (A9-Parallel) LP ("ACR Parallel"), and Atlas Capital Resources (P) LP ("ACR P" and, together with ACR9 and ACR Parallel, collectively, "Atlas"). On September 10, 2026, the Issuer issued 2,095,299 shares of Class A Common Stock to ACR9, 752,030 shares of Class A Common Stock to ACR Parallel and 76,647 shares of Class A Common Stock to ACR P.

F2 · balance_after: Represents 7,109,358 shares of Class A Common Stock (including 2,680,031 shares of Class B Common Stock, par value $0.0001, that converted into Class A Common Stock on September 10, 2026).

F3 · ownership.nature: Atlas Capital GP LP ("ACR GPLP") is the general partner of ACR9, ACR Parallel, ACR P and GGH Bridge Investment LP ("GGH"). Atlas Capital Resources GP LLC ("ACR GP") is the general partner of ACR GPLP. ACR GP, ACR GPLP, ACR9, ACR Parallel, ACR P, and GGH are collectively referred to as the "Atlas Entities." Andrew M. Bursky and Timothy J. Fazio are each a managing partner of ACR GP and may be deemed to control the Atlas Entities.

F4 · ownership.nature: Each of Messrs. Bursky and Fazio and each of the Atlas Entities disclaims beneficial ownership interest of the Class A Common Stock except, in each case, to the extent he or it has any pecuniary interest therein.

SEC source: 0001628280-26-061891 · wk-form4_1789419128.xml · nonDerivative · entry 1

Rothschild Allan B. · CIK 0002153888 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,362

F1 · date: Represents restricted stock units granted as an annual equity retainer for service on the Issuer's Board of Directors and its committees pursuant to the Issuer's Fourth Amended and Restated 2021 Equity Incentive Plan. Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock. The award will vest in its entirety on the first anniversary of the grant date.

SEC source: 0001628280-26-061894 · wk-form4_1789419163.xml · nonDerivative · entry 1

Wu Jacky · CIK 0001641811 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,158

F1 · date: Represents restricted stock units granted as an annual equity retainer for service on the Issuer's Board of Directors and its committees pursuant to the Issuer's Fourth Amended and Restated 2021 Equity Incentive Plan. Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock. The award will vest in its entirety on the first anniversary of the grant date.

SEC source: 0001628280-26-061893 · wk-form4_1789419148.xml · nonDerivative · entry 1

Foley Robert · CIK 0001298783 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,158

F1 · date: Represents restricted stock units granted as an annual equity retainer for service on the Issuer's Board of Directors and its committees pursuant to the Issuer's Fourth Amended and Restated 2021 Equity Incentive Plan. Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock. The award will vest in its entirety on the first anniversary of the grant date.

SEC source: 0001628280-26-061880 · wk-form4_1789418987.xml · nonDerivative · entry 1

Kovler Jordan · CIK 0001971292 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 383,885

F1 · date: Represents shares of the Issuer's Class A Common Stock purchased directly from the Issuer by the Reporting Purchaser in connection with the PIPE transaction announced by the Issuer on July 20, 2026, which closed on September 10, 2026.

SEC source: 0001628280-26-061879 · wk-form4_1789418981.xml · nonDerivative · entry 1

Mulvihill Christian · CIK 0001998358 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 234,475

F1 · date: Represents shares of the Issuer's Class A Common Stock purchased directly from the Issuer by the Reporting Purchaser in connection with the PIPE transaction announced by the Issuer on July 20, 2026, which closed on September 10, 2026.

SEC source: 0001628280-26-061878 · wk-form4_1789418971.xml · nonDerivative · entry 1

Irwin Dale · CIK 0001881363 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 260,955

F1 · date: Represents shares of the Issuer's Class A Common Stock purchased directly from the Issuer by the Reporting Purchaser in connection with the PIPE transaction announced by the Issuer on July 20, 2026, which closed on September 10, 2026.

SEC source: 0001628280-26-061590 · wk-form4_1789160717.xml · nonDerivative · entry 3

Rogers George Ted III · CIK 0001881667 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,039,467

F3 · date: Represents shares of the Issuer's Class A Common Stock purchased directly from the Issuer by the Reporting Purchaser in connection with the PIPE transaction announced by the Issuer on July 20, 2026, which closed on September 10, 2026.

SEC source: 0001628280-26-061590 · wk-form4_1789160717.xml · nonDerivative · entry 2

Rogers George Ted III · CIK 0001881667 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 115,491

F2 · date: Represents restricted stock units granted as an annual equity retainer for service on the Issuer's Board of Directors and its committees pursuant to the Issuer's Fourth Amended and Restated 2021 Equity Incentive Plan. Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock. The award will vest in its entirety on the first anniversary of the grant date.

SEC source: 0001628280-26-061586 · wk-form4_1789160545.xml · nonDerivative · entry 2

NEUSCHELER MICHAEL P · CIK 0001111014 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 139,462

F2 · date: Represents restricted stock units granted as an annual equity retainer for service on the Issuer's Board of Directors and its committees pursuant to the Issuer's Fourth Amended and Restated 2021 Equity Incentive Plan. Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock. The award will vest in its entirety on the first anniversary of the grant date.

SEC source: 0001628280-26-062889 · wk-form4a_1790021764.xml · nonDerivative · entry 1

NEUSCHELER MICHAEL P · CIK 0001111014 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 63,711

F1 · date: Represents restricted stock units granted as a one-time equity award in recognition of the Reporting Person's contributions to the Issuer's strategic transformation pursuant to the Issuer's Fourth Amended and Restated 2021 Equity Incentive Plan. Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock. The award will vest in its entirety sixty days from the grant date.

SEC source: 0001628280-26-061590 · wk-form4_1789160717.xml · nonDerivative · entry 1

Rogers George Ted III · CIK 0001881667 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 77,240

F1 · date: Represents restricted stock units granted as a one-time equity award in recognition of the Reporting Person's contributions to the Issuer's strategic transformation pursuant to the Issuer's Fourth Amended and Restated 2021 Equity Incentive Plan. Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock. The award will vest in its entirety sixty days from the grant date.

SEC source: 0001628280-26-061586 · wk-form4_1789160545.xml · nonDerivative · entry 1

NEUSCHELER MICHAEL P · CIK 0001111014 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 97,113

F1 · date: Represents restricted stock units granted as a one-time equity award in recognition of the Reporting Person's contributions to the Issuer's strategic transformation pursuant to the Issuer's Fourth Amended and Restated 2021 Equity Incentive Plan. Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock. The award will vest in its entirety sixty days from the grant date.

SEC source: 0001628280-26-049591 · wk-form4_1784923537.xml · nonDerivative · entry 1

Irwin Dale · CIK 0001881363 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 202,476

F1 · date: Represents the number of shares sold to cover the tax withholding obligations in connection with the vesting of certain restricted stock units and does not represent a discretionary sale by the Reporting Person.

SEC source: 0001628280-26-049589 · wk-form4_1784923516.xml · nonDerivative · entry 1

Kovler Jordan · CIK 0001971292 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 325,406

F1 · date: Represents the number of shares sold to cover the tax withholding obligations in connection with the vesting of certain restricted stock units and does not represent a discretionary sale by the Reporting Person.

SEC source: 0001628280-26-049582 · wk-form4_1784923324.xml · nonDerivative · entry 1

Mulvihill Christian · CIK 0001998358 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 175,996

F1 · date: Represents the number of shares sold to cover the tax withholding obligations in connection with the vesting of certain restricted stock units and does not represent a discretionary sale by the Reporting Person.

SEC source: 0001628280-26-049257 · wk-form4_1784758978.xml · nonDerivative · entry 1

Irwin Dale · CIK 0001881363 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 223,630

F1 · date: Represents restricted stock units granted as a one-time equity award in recognition of the Reporting Person's contributions to the Issuer's strategic transformation, including the entry into definitive agreements for the strategic investment announced on July 20, 2026, pursuant to the Issuer's Third Amended and Restated 2021 Equity Incentive Plan. Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock. The award will vest in its entirety on July 23, 2026.

SEC source: 0001628280-26-049258 · wk-form4_1784758986.xml · nonDerivative · entry 1

Kovler Jordan · CIK 0001971292 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 361,127

F1 · date: Represents restricted stock units granted as a one-time equity award in recognition of the Reporting Person's contributions to the Issuer's strategic transformation, including the entry into definitive agreements for the strategic investment announced on July 20, 2026, pursuant to the Issuer's Third Amended and Restated 2021 Equity Incentive Plan. Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock. The award will vest in its entirety on July 23, 2026.

SEC source: 0001628280-26-049256 · wk-form4_1784758970.xml · nonDerivative · entry 1

Mulvihill Christian · CIK 0001998358 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 190,734

F1 · date: Represents restricted stock units granted as a one-time equity award in recognition of the Reporting Person's contributions to the Issuer's strategic transformation, including the entry into definitive agreements for the strategic investment announced on July 20, 2026, pursuant to the Issuer's Third Amended and Restated 2021 Equity Incentive Plan. Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock. The award will vest in its entirety on July 23, 2026.

F2 · balance_after: The amount of securities reflects the correction of a past overstatement of 707 shares of Class A Common Stock beneficially owned by the Reporting Person due to an unidentified reporting error.

SEC source: 0001193125-26-298546 · ownership.xml · nonDerivative · entry 1

Atlas Capital Resources GP LLC · CIK 0001882294 · Director · 10% owner

Atlas Capital GP LP · CIK 0001882313 · Director · 10% owner

Atlas Capital Resources (A9) LP · CIK 0001880358 · Director · 10% owner

BURSKY ANDREW M · CIK 0000905112 · Director · 10% owner

Fazio Timothy J · CIK 0001394403 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 4,185,381

F1 · kind: In connection with the Equity Interest Payment Agreement (the "Agreement"), dated as of January 24, 2025, by and among Greenidge Generation Holdings Inc. (the "Issuer") and Atlas Capital Resources (A9) LP ("ACR9"), Atlas Capital Resources (A9-Parallel) LP ("ACR Parallel"), and Atlas Capital Resources (P) LP ("ACR P" and, together with ACR9 and ACR Parallel, collectively, "Atlas"), the Issuer made a $161,820 payment to Atlas in the form of shares of Class A Common Stock based on the price formula set forth in the Agreement. Of the 114,199 shares of Class A Common Stock issued to Atlas thereunder, 81,825 shares were issued to ACR9, 29,381 shares were issued to ACR Parallel and 2,993 shares were issued to ACR P.

F1 · price: In connection with the Equity Interest Payment Agreement (the "Agreement"), dated as of January 24, 2025, by and among Greenidge Generation Holdings Inc. (the "Issuer") and Atlas Capital Resources (A9) LP ("ACR9"), Atlas Capital Resources (A9-Parallel) LP ("ACR Parallel"), and Atlas Capital Resources (P) LP ("ACR P" and, together with ACR9 and ACR Parallel, collectively, "Atlas"), the Issuer made a $161,820 payment to Atlas in the form of shares of Class A Common Stock based on the price formula set forth in the Agreement. Of the 114,199 shares of Class A Common Stock issued to Atlas thereunder, 81,825 shares were issued to ACR9, 29,381 shares were issued to ACR Parallel and 2,993 shares were issued to ACR P.

F2 · balance_after: Represents 1,505,351 shares of Class A Common Stock and 2,680,030 shares of Class B Common Stock, which are convertible at any time at the option of the holder into an equal number of shares of Class A Common Stock.

F3 · ownership.nature: Atlas Capital GP LP ("ACR GPLP") is the general partner of ACR9, ACR Parallel, ACR P and GGH Bridge Investment LP ("GGH"). Atlas Capital Resources GP LLC ("ACR GP") is the general partner of ACR GPLP. ACR GP, ACR GPLP, ACR9, ACR Parallel, ACR P, and GGH are collectively referred to as the "Atlas Entities." Andrew M. Bursky and Timothy J. Fazio are each a managing partner of ACR GP and may be deemed to control the Atlas Entities.

F4 · ownership.nature: Each of Messrs. Bursky and Fazio and each of the Atlas Entities disclaims beneficial ownership interest of the Class A Common Stock except, in each case, to the extent he or it has any pecuniary interest therein.

SEC source: 0001193125-26-152945 · ownership.xml · nonDerivative · entry 1

Atlas Capital Resources GP LLC · CIK 0001882294 · Director · 10% owner

Atlas Capital GP LP · CIK 0001882313 · Director · 10% owner

Atlas Capital Resources (A9) LP · CIK 0001880358 · Director · 10% owner

BURSKY ANDREW M · CIK 0000905112 · Director · 10% owner

Fazio Timothy J · CIK 0001394403 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 4,071,182

F1 · kind: In connection with the Equity Interest Payment Agreement (the "Agreement"), dated as of January 24, 2025, by and among Greenidge Generation Holdings Inc. (the "Issuer") and Atlas Capital Resources (A9) LP ("ACR9"), Atlas Capital Resources (A9-Parallel) LP ("ACR Parallel"), and Atlas Capital Resources (P) LP ("ACR P" and, together with ACR9 and ACR Parallel, collectively, "Atlas"), the Issuer made a $160,041 payment to Atlas in the form of shares of Class A Common Stock based on the price formula set forth in the Agreement. Of the 114,865 shares of Class A Common Stock issued to Atlas thereunder, 82,302 shares were issued to ACR9, 29,552 shares were issued to ACR Parallel and 3,011 shares were issued to ACR P.

F1 · price: In connection with the Equity Interest Payment Agreement (the "Agreement"), dated as of January 24, 2025, by and among Greenidge Generation Holdings Inc. (the "Issuer") and Atlas Capital Resources (A9) LP ("ACR9"), Atlas Capital Resources (A9-Parallel) LP ("ACR Parallel"), and Atlas Capital Resources (P) LP ("ACR P" and, together with ACR9 and ACR Parallel, collectively, "Atlas"), the Issuer made a $160,041 payment to Atlas in the form of shares of Class A Common Stock based on the price formula set forth in the Agreement. Of the 114,865 shares of Class A Common Stock issued to Atlas thereunder, 82,302 shares were issued to ACR9, 29,552 shares were issued to ACR Parallel and 3,011 shares were issued to ACR P.

F2 · balance_after: Represents 1,391,152 shares of Class A Common Stock and 2,680,030 shares of Class B Common Stock, which are convertible at any time at the option of the holder into an equal number of shares of Class A Common Stock.

F3 · ownership.nature: Atlas Capital GP LP ("ACR GPLP") is the general partner of ACR9, ACR Parallel, ACR P and GGH Bridge Investment LP ("GGH"). Atlas Capital Resources GP LLC ("ACR GP") is the general partner of ACR GPLP. ACR GP, ACR GPLP, ACR9, ACR Parallel, ACR P, and GGH are collectively referred to as the "Atlas Entities." Andrew M. Bursky and Timothy J. Fazio are each a managing partner of ACR GP and may be deemed to control the Atlas Entities.

F4 · ownership.nature: Each of Messrs. Bursky and Fazio and each of the Atlas Entities disclaims beneficial ownership interest of the Class A Common Stock except, in each case, to the extent he or it has any pecuniary interest therein.

SEC source: 0001881363-26-000001 · wk-form4_1773441459.xml · nonDerivative · entry 2

Irwin Dale · CIK 0001881363 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 173,630

F3 · date: Represents the number of shares withheld to cover the Reporting Person's tax liability in connection with the vesting of certain restricted stock units and does not represent a discretionary sale by the Reporting Person.

SEC source: 0001971292-26-000001 · wk-form4_1773441454.xml · nonDerivative · entry 2

Kovler Jordan · CIK 0001971292 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 236,127

F3 · date: Represents the number of shares withheld to cover the Reporting Person's tax liability in connection with the vesting of certain restricted stock units and does not represent a discretionary sale by the Reporting Person.

SEC source: 0001998358-26-000001 · wk-form4_1773441449.xml · nonDerivative · entry 2

Mulvihill Christian · CIK 0001998358 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 156,441

F3 · date: Represents the number of shares withheld to cover the Reporting Person's tax liability in connection with the vesting of certain restricted stock units and does not represent a discretionary sale by the Reporting Person.

SEC source: 0001881363-26-000001 · wk-form4_1773441459.xml · nonDerivative · entry 1

Irwin Dale · CIK 0001881363 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 213,285

F1 · date: This Form 4 is being filed late due to an inadvertent administrative oversight related to the Issuer's migration to a new employee stock administration platform, which delayed the timely reporting of the transaction and was not the result of any error by the Reporting Person.

F2 · date: Represents restricted stock units granted as bonus compensation for fiscal year 2025 pursuant to the Issuer's Third Amended and Restated 2021 Equity Incentive Plan. Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock and vested immediately.

SEC source: 0001971292-26-000001 · wk-form4_1773441454.xml · nonDerivative · entry 1

Kovler Jordan · CIK 0001971292 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 262,912

F1 · date: This Form 4 is being filed late due to an inadvertent administrative oversight related to the Issuer's migration to a new employee stock administration platform, which delayed the timely reporting of the transaction and was not the result of any error by the Reporting Person.

F2 · date: Represents restricted stock units granted as bonus compensation for fiscal year 2025 pursuant to the Issuer's Third Amended and Restated 2021 Equity Incentive Plan. Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock and vested immediately.

SEC source: 0001998358-26-000001 · wk-form4_1773441449.xml · nonDerivative · entry 1

Mulvihill Christian · CIK 0001998358 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 190,451

F1 · date: This Form 4 is being filed late due to an inadvertent administrative oversight related to the Issuer's migration to a new employee stock administration platform, which delayed the timely reporting of the transaction and was not the result of any error by the Reporting Person.

F2 · date: Represents restricted stock units granted as bonus compensation for fiscal year 2025 pursuant to the Issuer's Third Amended and Restated 2021 Equity Incentive Plan. Each restricted stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock and vested immediately.

SEC source: 0001628280-26-005483 · wk-form4_1770241012.xml · nonDerivative · entry 2

Irwin Dale · CIK 0001881363 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 103,285

F1 · date: Represents the number of shares sold to cover the tax withholding obligations in connection with the vesting of certain restricted stock units and does not represent a discretionary sale by the Reporting Person.

SEC source: 0001628280-26-005483 · wk-form4_1770241012.xml · nonDerivative · entry 1

Irwin Dale · CIK 0001881363 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 105,264

F1 · date: Represents the number of shares sold to cover the tax withholding obligations in connection with the vesting of certain restricted stock units and does not represent a discretionary sale by the Reporting Person.

SEC source: 0001628280-26-005485 · wk-form4_1770241030.xml · nonDerivative · entry 2

Mulvihill Christian · CIK 0001998358 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 95,451

F1 · date: Represents the number of shares sold to cover the tax withholding obligations in connection with the vesting of certain restricted stock units and does not represent a discretionary sale by the Reporting Person.

SEC source: 0001628280-26-005485 · wk-form4_1770241030.xml · nonDerivative · entry 1

Mulvihill Christian · CIK 0001998358 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 97,404

F1 · date: Represents the number of shares sold to cover the tax withholding obligations in connection with the vesting of certain restricted stock units and does not represent a discretionary sale by the Reporting Person.

SEC source: 0001193125-26-010362 · ownership.xml · nonDerivative · entry 1

Atlas Capital Resources GP LLC · CIK 0001882294 · Director · 10% owner

Atlas Capital GP LP · CIK 0001882313 · Director · 10% owner

Atlas Capital Resources (A9) LP · CIK 0001880358 · Director · 10% owner

BURSKY ANDREW M · CIK 0000905112 · Director · 10% owner

Fazio Timothy J · CIK 0001394403 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 3,956,317

F1 · kind: In connection with the Equity Interest Payment Agreement (the "Agreement"), dated as of January 24, 2025, by and among Greenidge Generation Holdings Inc. (the "Issuer") and Atlas Capital Resources (A9) LP ("ACR9"), Atlas Capital Resources (A9-Parallel) LP ("ACR Parallel"), and Atlas Capital Resources (P) LP ("ACR P" and, together with ACR9 and ACR Parallel, collectively, "Atlas"), the Issuer made a $163,598 payment to Atlas in the form of shares of Class A Common Stock based on the price formula set forth in the Agreement. Of the 79,320 shares of Class A Common Stock issued to Atlas thereunder, 56,834 shares were issued to ACR9, 20,407 shares were issued to ACR Parallel and 2,079 shares were issued to ACR P.

F1 · price: In connection with the Equity Interest Payment Agreement (the "Agreement"), dated as of January 24, 2025, by and among Greenidge Generation Holdings Inc. (the "Issuer") and Atlas Capital Resources (A9) LP ("ACR9"), Atlas Capital Resources (A9-Parallel) LP ("ACR Parallel"), and Atlas Capital Resources (P) LP ("ACR P" and, together with ACR9 and ACR Parallel, collectively, "Atlas"), the Issuer made a $163,598 payment to Atlas in the form of shares of Class A Common Stock based on the price formula set forth in the Agreement. Of the 79,320 shares of Class A Common Stock issued to Atlas thereunder, 56,834 shares were issued to ACR9, 20,407 shares were issued to ACR Parallel and 2,079 shares were issued to ACR P.

F2 · balance_after: Represents 1,276,287 shares of Class A Common Stock and 2,680,030 shares of Class B Common Stock, which are convertible at any time at the option of the holder into an equal number of shares of Class A Common Stock.

F3 · ownership.nature: Atlas Capital GP LP ("ACR GPLP") is the general partner of ACR9, ACR Parallel, ACR P and GGH Bridge Investment LP ("GGH"). Atlas Capital Resources GP LLC ("ACR GP") is the general partner of ACR GPLP. ACR GP, ACR GPLP, ACR9, ACR Parallel, ACR P, and GGH are collectively referred to as the "Atlas Entities." Andrew M. Bursky and Timothy J. Fazio are each a managing partner of ACR GP and may be deemed to control the Atlas Entities.

F4 · ownership.nature: Each of Messrs. Bursky and Fazio and each of the Atlas Entities disclaims beneficial ownership interest of the Class A Common Stock except, in each case, to the extent he or it has any pecuniary interest therein.

SEC source: 0001628280-25-052697 · wk-form4_1763418278.xml · nonDerivative · entry 1

Zeynel Charles M. · CIK 0002081778 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 83,493

F1 · date: This Form 4 is being filed late due to an inadvertent administrative oversight and not any error of the Reporting Person.

F2 · date: Represents restricted stock units ("RSUs") granted pursuant to the Issuer's Third Amended and Restated 2021 Equity Incentive Plan for service as chair of a special committee of the Issuer's Board of Directors. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock. The RSUs vest six months after the grant date.

SEC source: 0001628280-25-052694 · wk-form4_1763418249.xml · nonDerivative · entry 1

Krug Christopher J. · CIK 0002063654 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 174,107

F1 · date: This Form 4 is being filed late due to an inadvertent administrative oversight and not any error of the Reporting Person.

F2 · date: Represents restricted stock units ("RSUs") granted pursuant to the Issuer's Third Amended and Restated 2021 Equity Incentive Plan for service as a member of a special committee of the Issuer's Board of Directors. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock. The RSUs vest six months after the grant date.

SEC source: 0001628280-25-052695 · wk-form4_1763418259.xml · nonDerivative · entry 1

Fearn Kenneth Hopkins Jr. · CIK 0001681775 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 174,107

F1 · date: This Form 4 is being filed late due to an inadvertent administrative oversight and not any error of the Reporting Person.

F2 · date: Represents restricted stock units ("RSUs") granted pursuant to the Issuer's Third Amended and Restated 2021 Equity Incentive Plan for service as a member of a special committee of the Issuer's Board of Directors. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock. The RSUs vest six months after the grant date.

SEC source: 0001998358-25-000006 · wk-form4_1760564867.xml · nonDerivative · entry 1

Mulvihill Christian · CIK 0001998358 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 97,409

F1 · date: Represents the number of shares sold to cover the tax withholding obligations in connection with the vesting of certain restricted stock units and does not represent a discretionary sale by the Reporting Person.

SEC source: 0001193125-25-235820 · ownership.xml · nonDerivative · entry 1

Atlas Capital Resources GP LLC · CIK 0001882294 · Director · 10% owner

Atlas Capital GP LP · CIK 0001882313 · Director · 10% owner

Atlas Capital Resources (A9) LP · CIK 0001880358 · Director · 10% owner

BURSKY ANDREW M · CIK 0000905112 · Director · 10% owner

Fazio Timothy J · CIK 0001394403 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 3,876,997

F1 · kind: In connection with the Equity Interest Payment Agreement (the "Agreement"), dated as of January 24, 2025, by and among Greenidge Generation Holdings Inc. (the "Issuer") and Atlas Capital Resources (A9) LP ("ACR9"), Atlas Capital Resources (A9-Parallel) LP ("ACR Parallel"), and Atlas Capital Resources (P) LP ("ACR P" and, together with ACR9 and ACR Parallel, collectively, "Atlas"), the Issuer made a $166,164 payment to Atlas in the form of shares of Class A Common Stock based on the price formula set forth in the Agreement. Of the 102,286 shares of Class A Common Stock issued to Atlas thereunder, 73,289 shares were issued to ACR9, 26,316 shares were issued to ACR Parallel and 2,681 shares were issued to ACR P.

F1 · price: In connection with the Equity Interest Payment Agreement (the "Agreement"), dated as of January 24, 2025, by and among Greenidge Generation Holdings Inc. (the "Issuer") and Atlas Capital Resources (A9) LP ("ACR9"), Atlas Capital Resources (A9-Parallel) LP ("ACR Parallel"), and Atlas Capital Resources (P) LP ("ACR P" and, together with ACR9 and ACR Parallel, collectively, "Atlas"), the Issuer made a $166,164 payment to Atlas in the form of shares of Class A Common Stock based on the price formula set forth in the Agreement. Of the 102,286 shares of Class A Common Stock issued to Atlas thereunder, 73,289 shares were issued to ACR9, 26,316 shares were issued to ACR Parallel and 2,681 shares were issued to ACR P.

F2 · balance_after: Represents 1,196,967 shares of Class A Common Stock and 2,680,030 shares of Class B Common Stock, which are convertible at any time at the option of the holder into an equal number of shares of Class A Common Stock.

F3 · ownership.nature: Atlas Capital GP LP ("ACR GPLP") is the general partner of ACR9, ACR Parallel, ACR P and GGH Bridge Investment LP ("GGH"). Atlas Capital Resources GP LLC ("ACR GP") is the general partner of ACR GPLP. ACR GP, ACR GPLP, ACR9, ACR Parallel, ACR P, and GGH are collectively referred to as the "Atlas Entities." Andrew M. Bursky and Timothy J. Fazio are each a managing partner of ACR GP and may be deemed to control the Atlas Entities.

F4 · ownership.nature: Each of Messrs. Bursky and Fazio and each of the Atlas Entities disclaims beneficial ownership interest of the Class A Common Stock except, in each case, to the extent he or it has any pecuniary interest therein.

SEC source: 0001998358-25-000004 · wk-form4_1758153314.xml · nonDerivative · entry 2

Mulvihill Christian · CIK 0001998358 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 98,018

F1 · date: Represents the number of shares sold to cover the tax withholding obligations in connection with the vesting of certain restricted stock units and does not represent a discretionary sale by the Reporting Person.

SEC source: 0001998358-25-000004 · wk-form4_1758153314.xml · nonDerivative · entry 1

Mulvihill Christian · CIK 0001998358 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 98,640

F1 · date: Represents the number of shares sold to cover the tax withholding obligations in connection with the vesting of certain restricted stock units and does not represent a discretionary sale by the Reporting Person.

SEC source: 0001628280-25-040942 · wk-form4_1755737297.xml · nonDerivative · entry 1

Zeynel Charles M. · CIK 0002081778 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 68,493

F1 · date: Represents restricted stock units ("RSUs") granted as an initial award pursuant to the Issuer's Third Amended and Restated 2021 Equity Incentive Plan in connection with the Reporting Person's appointment to the Issuer's Board of Directors. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock. The RSUs vest in three approximately equal annual installments beginning one year after the grant date.

SEC source: 0001628280-25-040260 · wk-form4_1755125815.xml · nonDerivative · entry 1

Mulvihill Christian · CIK 0001998358 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 98,645

F1 · date: Represents the number of shares sold to cover the tax withholding obligations in connection with the vesting of certain restricted stock units and does not represent a discretionary sale by the Reporting Person.

SEC source: 0001628280-25-038106 · wk-form4_1754485150.xml · nonDerivative · entry 1

Irwin Dale · CIK 0001881363 · President

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 105,270

F1 · date: Represents the number of shares sold to cover the tax withholding obligations in connection with the vesting of certain restricted stock units and does not represent a discretionary sale by the Reporting Person.

F2 · balance_after: The amount of securities reflects the correction of a past overstatement of 177 shares of Class A Common Stock beneficially owned by the Reporting Person due to an unidentified reporting error.

SEC source: 0001628280-25-038108 · wk-form4_1754485185.xml · nonDerivative · entry 1

Mulvihill Christian · CIK 0001998358 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 99,260

F1 · date: Represents the number of shares sold to cover the tax withholding obligations in connection with the vesting of certain restricted stock units and does not represent a discretionary sale by the Reporting Person.

SEC source: 0001628280-25-035062 · wk-form4_1752696267.xml · nonDerivative · entry 1

Mulvihill Christian · CIK 0001998358 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 100,956

F1 · date: Represents the number of shares sold to cover the tax withholding obligations in connection with the vesting of certain restricted stock units and does not represent a discretionary sale by the Reporting Person.

SEC source: 0000950170-25-094213 · ownership.xml · nonDerivative · entry 1

Atlas Capital Resources GP LLC · CIK 0001882294 · Director · 10% owner

Atlas Capital GP LP · CIK 0001882313 · Director · 10% owner

Atlas Capital Resources (A9) LP · CIK 0001880358 · Director · 10% owner

BURSKY ANDREW M · CIK 0000905112 · Director · 10% owner

Fazio Timothy J · CIK 0001394403 · Director · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnotes

Disclosed balance after: 3,774,711

F1 · kind: In connection with the Equity Interest Payment Agreement (the "Agreement"), dated as of January 24, 2025, by and among Greenidge Generation Holdings Inc. (the "Issuer") and Atlas Capital Resources (A9) LP ("ACR9"), Atlas Capital Resources (A9-Parallel) LP ("ACR Parallel"), and Atlas Capital Resources (P) LP ("ACR P" and, together with ACR9 and ACR Parallel, collectively, "Atlas"), the Issuer made a $162,322 payment to Atlas in the form of shares of Class A Common Stock based on the price formula set forth in the Agreement. Of the 131,937 shares of Class A Common Stock issued to Atlas thereunder, 94,534 shares were issued to ACR9, 33,944 shares were issued to ACR Parallel and 3,459 shares were issued to ACR P.

F1 · price: In connection with the Equity Interest Payment Agreement (the "Agreement"), dated as of January 24, 2025, by and among Greenidge Generation Holdings Inc. (the "Issuer") and Atlas Capital Resources (A9) LP ("ACR9"), Atlas Capital Resources (A9-Parallel) LP ("ACR Parallel"), and Atlas Capital Resources (P) LP ("ACR P" and, together with ACR9 and ACR Parallel, collectively, "Atlas"), the Issuer made a $162,322 payment to Atlas in the form of shares of Class A Common Stock based on the price formula set forth in the Agreement. Of the 131,937 shares of Class A Common Stock issued to Atlas thereunder, 94,534 shares were issued to ACR9, 33,944 shares were issued to ACR Parallel and 3,459 shares were issued to ACR P.

F2 · balance_after: Represents 1,094,681 shares of Class A Common Stock and 2,680,030 shares of Class B Common Stock, which are convertible at any time at the option of the holder into an equal number of shares of Class A Common Stock.

F3 · ownership.nature: Atlas Capital GP LP ("ACR GPLP") is the general partner of ACR9, ACR Parallel, ACR P and GGH Bridge Investment LP ("GGH"). Atlas Capital Resources GP LLC ("ACR GP") is the general partner of ACR GPLP. ACR GP, ACR GPLP, ACR9, ACR Parallel, ACR P, and GGH are collectively referred to as the "Atlas Entities." Andrew M. Bursky and Timothy J. Fazio are each a managing partner of ACR GP and may be deemed to control the Atlas Entities.

F4 · ownership.nature: Each of Messrs. Bursky and Fazio and each of the Atlas Entities disclaims beneficial ownership interest of the Class A Common Stock except, in each case, to the extent he or it has any pecuniary interest therein.

SEC source: 0001628280-25-031412 · wk-form4_1749856348.xml · nonDerivative · entry 2

Mulvihill Christian · CIK 0001998358 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 101,567

F1 · date: Represents the number of shares sold to cover the tax withholding obligations in connection with the vesting of certain restricted stock units and does not represent a discretionary sale by the Reporting Person.