CIFR

SEC source: 0001240259-25-000006 · wk-form4_1764370111.xml · nonDerivative · entry 1

GROSSMAN CARY M · CIK 0001240259 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 200,530

SEC source: 0001887698-25-000004 · wk-form4_1764370059.xml · nonDerivative · entry 1

Evans Holly Morrow · CIK 0001887698 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 195,512

F1 · price: The sales were executed in multiple trades at prices ranging from $18.21 to $19.00. The price reported reflects the weighted average sale price. The Reporting Person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

SEC source: 0001887616-25-000010 · wk-form4_1763587581.xml · nonDerivative · entry 1

Kelly Patrick Arthur · CIK 0001887616 · Co-President and COO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,187,339

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 12, 2025.

F2 · price: The sales were executed in multiple trades at prices ranging from $13.60 to $14.88. The price reported reflects the weighted average sale price. The Reporting Person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4.

SEC source: 0001123292-25-000659 · form4.xml · derivative · entry 1

V3 Holding Ltd · CIK 0001887845 · 10% owner

Bitfury Top HoldCo B.V. · CIK 0001884407 · 10% owner

Bitfury Holding B.V. · CIK 0001887853 · 10% owner

Vavilovs Valerijs · CIK 0001887811 · 10% owner

Bitfury Group Ltd · CIK 0001887872 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 5,520,000

Underlying: Common Stock · 5,520,000 shares

Expires not disclosed

F1 · derivative.exercise_price: On November 14, 2025, Bitfury Top HoldCo B.V. ("Bitfury Top HoldCo") entered into a variable prepaid forward sale contract (the "Forward Contract") with an unaffiliated third-party dealer (the "Dealer") covering a maximum of 5,520,000 shares of Common Stock. The Forward Contract obligates Bitfury Top HoldCo to deliver to the Dealer up to 1,840,000 shares of Common Stock in each of three tranches within one business day after each of the three maturity dates of the Forward Contract (October 2, 2026, October 30, 2026 and December 7, 2026), for an aggregate amount of up to 5,520,000 shares. In exchange for assuming this obligation, Bitfury Top HoldCo received a cash payment of $94.6 million in connection with the entry into the Forward Contract. The reporting person pledged 5,520,000 shares of Common Stock (the "Pledged Shares") to secure its obligations under the Forward Contract. [Continued]

F2 · derivative.exercise_price: [Cont.] The number of shares of Common Stock to be delivered to the Dealer on each of the three maturity dates is to be determined as follows: (a) if the closing price of Common Stock during the trading day immediately preceding the maturity date (the "Settlement Price") is less than or equal to $21.4439 (the "Floor Price"), the reporting person will deliver to the Dealer 1,840,000 shares; (b) if the Settlement Price is between the Floor Price and $37.5268 (the "Cap Price"), the reporting person will deliver to the Dealer a number of shares of Common Stock having a value (based on the then market price) equal to $39.5 million; and (c) if the Settlement Price is greater than the Cap Price, the reporting person will deliver to the Dealer a number of shares of Common Stock equal to 1,840,000 shares minus a number of shares of Common Stock having a value (based on the then market price) equal to $29.6 million. [Continued]

F3 · derivative.exercise_price: [Cont.] Bitfury Top HoldCo will retain economic and voting rights in the Pledged Shares during the term of the pledge (so long as no event of default or similar event occurs under the Forward Contract or the related pledge agreement).

F1 · kind: On November 14, 2025, Bitfury Top HoldCo B.V. ("Bitfury Top HoldCo") entered into a variable prepaid forward sale contract (the "Forward Contract") with an unaffiliated third-party dealer (the "Dealer") covering a maximum of 5,520,000 shares of Common Stock. The Forward Contract obligates Bitfury Top HoldCo to deliver to the Dealer up to 1,840,000 shares of Common Stock in each of three tranches within one business day after each of the three maturity dates of the Forward Contract (October 2, 2026, October 30, 2026 and December 7, 2026), for an aggregate amount of up to 5,520,000 shares. In exchange for assuming this obligation, Bitfury Top HoldCo received a cash payment of $94.6 million in connection with the entry into the Forward Contract. The reporting person pledged 5,520,000 shares of Common Stock (the "Pledged Shares") to secure its obligations under the Forward Contract. [Continued]

F2 · kind: [Cont.] The number of shares of Common Stock to be delivered to the Dealer on each of the three maturity dates is to be determined as follows: (a) if the closing price of Common Stock during the trading day immediately preceding the maturity date (the "Settlement Price") is less than or equal to $21.4439 (the "Floor Price"), the reporting person will deliver to the Dealer 1,840,000 shares; (b) if the Settlement Price is between the Floor Price and $37.5268 (the "Cap Price"), the reporting person will deliver to the Dealer a number of shares of Common Stock having a value (based on the then market price) equal to $39.5 million; and (c) if the Settlement Price is greater than the Cap Price, the reporting person will deliver to the Dealer a number of shares of Common Stock equal to 1,840,000 shares minus a number of shares of Common Stock having a value (based on the then market price) equal to $29.6 million. [Continued]

F3 · kind: [Cont.] Bitfury Top HoldCo will retain economic and voting rights in the Pledged Shares during the term of the pledge (so long as no event of default or similar event occurs under the Forward Contract or the related pledge agreement).

F1 · price: On November 14, 2025, Bitfury Top HoldCo B.V. ("Bitfury Top HoldCo") entered into a variable prepaid forward sale contract (the "Forward Contract") with an unaffiliated third-party dealer (the "Dealer") covering a maximum of 5,520,000 shares of Common Stock. The Forward Contract obligates Bitfury Top HoldCo to deliver to the Dealer up to 1,840,000 shares of Common Stock in each of three tranches within one business day after each of the three maturity dates of the Forward Contract (October 2, 2026, October 30, 2026 and December 7, 2026), for an aggregate amount of up to 5,520,000 shares. In exchange for assuming this obligation, Bitfury Top HoldCo received a cash payment of $94.6 million in connection with the entry into the Forward Contract. The reporting person pledged 5,520,000 shares of Common Stock (the "Pledged Shares") to secure its obligations under the Forward Contract. [Continued]

F2 · price: [Cont.] The number of shares of Common Stock to be delivered to the Dealer on each of the three maturity dates is to be determined as follows: (a) if the closing price of Common Stock during the trading day immediately preceding the maturity date (the "Settlement Price") is less than or equal to $21.4439 (the "Floor Price"), the reporting person will deliver to the Dealer 1,840,000 shares; (b) if the Settlement Price is between the Floor Price and $37.5268 (the "Cap Price"), the reporting person will deliver to the Dealer a number of shares of Common Stock having a value (based on the then market price) equal to $39.5 million; and (c) if the Settlement Price is greater than the Cap Price, the reporting person will deliver to the Dealer a number of shares of Common Stock equal to 1,840,000 shares minus a number of shares of Common Stock having a value (based on the then market price) equal to $29.6 million. [Continued]

F3 · price: [Cont.] Bitfury Top HoldCo will retain economic and voting rights in the Pledged Shares during the term of the pledge (so long as no event of default or similar event occurs under the Forward Contract or the related pledge agreement).

F1 · derivative.exercise_date: On November 14, 2025, Bitfury Top HoldCo B.V. ("Bitfury Top HoldCo") entered into a variable prepaid forward sale contract (the "Forward Contract") with an unaffiliated third-party dealer (the "Dealer") covering a maximum of 5,520,000 shares of Common Stock. The Forward Contract obligates Bitfury Top HoldCo to deliver to the Dealer up to 1,840,000 shares of Common Stock in each of three tranches within one business day after each of the three maturity dates of the Forward Contract (October 2, 2026, October 30, 2026 and December 7, 2026), for an aggregate amount of up to 5,520,000 shares. In exchange for assuming this obligation, Bitfury Top HoldCo received a cash payment of $94.6 million in connection with the entry into the Forward Contract. The reporting person pledged 5,520,000 shares of Common Stock (the "Pledged Shares") to secure its obligations under the Forward Contract. [Continued]

F2 · derivative.exercise_date: [Cont.] The number of shares of Common Stock to be delivered to the Dealer on each of the three maturity dates is to be determined as follows: (a) if the closing price of Common Stock during the trading day immediately preceding the maturity date (the "Settlement Price") is less than or equal to $21.4439 (the "Floor Price"), the reporting person will deliver to the Dealer 1,840,000 shares; (b) if the Settlement Price is between the Floor Price and $37.5268 (the "Cap Price"), the reporting person will deliver to the Dealer a number of shares of Common Stock having a value (based on the then market price) equal to $39.5 million; and (c) if the Settlement Price is greater than the Cap Price, the reporting person will deliver to the Dealer a number of shares of Common Stock equal to 1,840,000 shares minus a number of shares of Common Stock having a value (based on the then market price) equal to $29.6 million. [Continued]

F3 · derivative.exercise_date: [Cont.] Bitfury Top HoldCo will retain economic and voting rights in the Pledged Shares during the term of the pledge (so long as no event of default or similar event occurs under the Forward Contract or the related pledge agreement).

F1 · derivative.expiration_date: On November 14, 2025, Bitfury Top HoldCo B.V. ("Bitfury Top HoldCo") entered into a variable prepaid forward sale contract (the "Forward Contract") with an unaffiliated third-party dealer (the "Dealer") covering a maximum of 5,520,000 shares of Common Stock. The Forward Contract obligates Bitfury Top HoldCo to deliver to the Dealer up to 1,840,000 shares of Common Stock in each of three tranches within one business day after each of the three maturity dates of the Forward Contract (October 2, 2026, October 30, 2026 and December 7, 2026), for an aggregate amount of up to 5,520,000 shares. In exchange for assuming this obligation, Bitfury Top HoldCo received a cash payment of $94.6 million in connection with the entry into the Forward Contract. The reporting person pledged 5,520,000 shares of Common Stock (the "Pledged Shares") to secure its obligations under the Forward Contract. [Continued]

F2 · derivative.expiration_date: [Cont.] The number of shares of Common Stock to be delivered to the Dealer on each of the three maturity dates is to be determined as follows: (a) if the closing price of Common Stock during the trading day immediately preceding the maturity date (the "Settlement Price") is less than or equal to $21.4439 (the "Floor Price"), the reporting person will deliver to the Dealer 1,840,000 shares; (b) if the Settlement Price is between the Floor Price and $37.5268 (the "Cap Price"), the reporting person will deliver to the Dealer a number of shares of Common Stock having a value (based on the then market price) equal to $39.5 million; and (c) if the Settlement Price is greater than the Cap Price, the reporting person will deliver to the Dealer a number of shares of Common Stock equal to 1,840,000 shares minus a number of shares of Common Stock having a value (based on the then market price) equal to $29.6 million. [Continued]

F3 · derivative.expiration_date: [Cont.] Bitfury Top HoldCo will retain economic and voting rights in the Pledged Shares during the term of the pledge (so long as no event of default or similar event occurs under the Forward Contract or the related pledge agreement).

F4 · ownership.nature: Bitfury Group Limited ("BGL") is the sole owner of Bitfury Top HoldCo, and V3 Holding Limited ("V3") is the majority owner of BGL. Valerijs Vavilovs is the sole owner of V3. As a result of the foregoing relationships, each of Mr. Vavilovs, V3 and BGL may be deemed to share beneficial ownership of the securities beneficially owned by Bitfury Top HoldCo, and Mr. Vavilovs may be deemed to have beneficial ownership of the Common Stock owned by V3. Each of Mr. Vavilovs, V3, Bitfury Top HoldCo, BGL and Bitfury Holding B.V. disclaim beneficial ownership of such shares except to the extent of their respective pecuniary interests therein.

SEC source: 0000950103-25-014800 · dp237449_4-evans.xml · nonDerivative · entry 1

Evans Holly Morrow · CIK 0001887698 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 210,512

F1 · price: The sales were executed in multiple trades at prices ranging from $17.35 to $17.50. The price reported reflects the weighted average sale price. The Reporting Person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote to this Form 4.

SEC source: 0000950103-25-014799 · dp237450_4-williams.xml · nonDerivative · entry 1

Williams Wesley Hastie · CIK 0001887560 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 208,012

SEC source: 0001887623-25-000008 · wk-form4_1762989888.xml · nonDerivative · entry 3

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,979,887

F2 · kind: The transaction reported shows the Reporting Person's charitable gift of shares of the Issuer's Common Stock to three recipients.

SEC source: 0001887623-25-000008 · wk-form4_1762989888.xml · nonDerivative · entry 2

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,217,887

SEC source: 0001887623-25-000008 · wk-form4_1762989888.xml · derivative · entry 4

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,419,236

Underlying: Common Stock · 1,419,237 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.

F1 · derivative.exercise_price: Each performance stock unit ("PSU") represents a contingent right to receive one share of Issuer's Common Stock.

F3 · derivative.exercise_date: The PSUs vest, if at all, in three tranches based on the Issuer's achievement of certain market capitalization thresholds. The second tranche of the PSUs vested on November 9, 2025. The PSUs have no expiration date.

F3 · derivative.expiration_date: The PSUs vest, if at all, in three tranches based on the Issuer's achievement of certain market capitalization thresholds. The second tranche of the PSUs vested on November 9, 2025. The PSUs have no expiration date.

SEC source: 0001887623-25-000008 · wk-form4_1762989888.xml · nonDerivative · entry 1

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,942,408

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.

F1 · price: Each performance stock unit ("PSU") represents a contingent right to receive one share of Issuer's Common Stock.

SEC source: 0001887627-25-000007 · wk-form4_1762468456.xml · nonDerivative · entry 1

Iwaschuk William · CIK 0001887627 · Co-President and CLO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,054,488

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on June 5, 2025.

F2 · price: The sales were executed in multiple trades at prices ranging from $20.12 to $24.39. The price reported reflects the weighted average sale price. The Reporting Person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4.

SEC source: 0001123292-25-000611 · form4.xml · derivative · entry 1

V3 Holding Ltd · CIK 0001887845 · 10% owner

Bitfury Top HoldCo B.V. · CIK 0001884407 · 10% owner

Bitfury Holding B.V. · CIK 0001887853 · 10% owner

Vavilovs Valerijs · CIK 0001887811 · 10% owner

Bitfury Group Ltd · CIK 0001887872 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,415,000

Underlying: Common Stock · 5,415,000 shares

Expires not disclosed

F1 · derivative.exercise_price: On November 3, 2025, V3 Holding Limited ("V3") entered into a variable prepaid forward sale contract (the "Forward Contract") with an unaffiliated third-party dealer (the "Dealer") covering a maximum of 5,415,000 shares of Common Stock. The Forward Contract obligates V3 to deliver to the Dealer up to 1,805,000 shares of Common Stock in each of three tranches within one business day after each of the three maturity dates of the Forward Contract (September 25, 2026, October 23, 2026 and November 30, 2026), for an aggregate amount of up to 5,415,000 shares. In exchange for assuming this obligation, V3 received a cash payment of $100.0 million in connection with the entry into the Forward Contract. The reporting person pledged 5,415,000 shares of Common Stock (the "Pledged Shares") to secure its obligations under the Forward Contract. [Continued]

F2 · derivative.exercise_price: [Cont.] The number of shares of Common Stock to be delivered to the Dealer on each of the three maturity dates is to be determined as follows:(a) if the closing price of Common Stock during the trading day immediately preceding the maturity date (the "Settlement Price") is less than or equal to $21.4881 (the "Floor Price"), the reporting person will deliver to the Dealer 1,805,000 shares; (b) if the Settlement Price is between the Floor Price and $32.2322 (the "Cap Price"), the reporting person will deliver to the Dealer a number of shares of Common Stock having a value (based on the then market price) equal to $38.8 million; and (c) if the Settlement Price is greater than the Cap Price, the reporting person will deliver to the Dealer a number of shares of Common Stock equal to 1,805,000 shares minus a number of shares of Common Stock having a value (based on the then market price) equal to $19.4 million. [Continued]

F3 · derivative.exercise_price: [Cont.] V3 will retain economic and voting rights in the Pledged Shares during the term of the pledge (so long as no event of default or similar event occurs under the Forward Contract or the related pledge agreement).

F1 · kind: On November 3, 2025, V3 Holding Limited ("V3") entered into a variable prepaid forward sale contract (the "Forward Contract") with an unaffiliated third-party dealer (the "Dealer") covering a maximum of 5,415,000 shares of Common Stock. The Forward Contract obligates V3 to deliver to the Dealer up to 1,805,000 shares of Common Stock in each of three tranches within one business day after each of the three maturity dates of the Forward Contract (September 25, 2026, October 23, 2026 and November 30, 2026), for an aggregate amount of up to 5,415,000 shares. In exchange for assuming this obligation, V3 received a cash payment of $100.0 million in connection with the entry into the Forward Contract. The reporting person pledged 5,415,000 shares of Common Stock (the "Pledged Shares") to secure its obligations under the Forward Contract. [Continued]

F2 · kind: [Cont.] The number of shares of Common Stock to be delivered to the Dealer on each of the three maturity dates is to be determined as follows:(a) if the closing price of Common Stock during the trading day immediately preceding the maturity date (the "Settlement Price") is less than or equal to $21.4881 (the "Floor Price"), the reporting person will deliver to the Dealer 1,805,000 shares; (b) if the Settlement Price is between the Floor Price and $32.2322 (the "Cap Price"), the reporting person will deliver to the Dealer a number of shares of Common Stock having a value (based on the then market price) equal to $38.8 million; and (c) if the Settlement Price is greater than the Cap Price, the reporting person will deliver to the Dealer a number of shares of Common Stock equal to 1,805,000 shares minus a number of shares of Common Stock having a value (based on the then market price) equal to $19.4 million. [Continued]

F3 · kind: [Cont.] V3 will retain economic and voting rights in the Pledged Shares during the term of the pledge (so long as no event of default or similar event occurs under the Forward Contract or the related pledge agreement).

F1 · price: On November 3, 2025, V3 Holding Limited ("V3") entered into a variable prepaid forward sale contract (the "Forward Contract") with an unaffiliated third-party dealer (the "Dealer") covering a maximum of 5,415,000 shares of Common Stock. The Forward Contract obligates V3 to deliver to the Dealer up to 1,805,000 shares of Common Stock in each of three tranches within one business day after each of the three maturity dates of the Forward Contract (September 25, 2026, October 23, 2026 and November 30, 2026), for an aggregate amount of up to 5,415,000 shares. In exchange for assuming this obligation, V3 received a cash payment of $100.0 million in connection with the entry into the Forward Contract. The reporting person pledged 5,415,000 shares of Common Stock (the "Pledged Shares") to secure its obligations under the Forward Contract. [Continued]

F2 · price: [Cont.] The number of shares of Common Stock to be delivered to the Dealer on each of the three maturity dates is to be determined as follows:(a) if the closing price of Common Stock during the trading day immediately preceding the maturity date (the "Settlement Price") is less than or equal to $21.4881 (the "Floor Price"), the reporting person will deliver to the Dealer 1,805,000 shares; (b) if the Settlement Price is between the Floor Price and $32.2322 (the "Cap Price"), the reporting person will deliver to the Dealer a number of shares of Common Stock having a value (based on the then market price) equal to $38.8 million; and (c) if the Settlement Price is greater than the Cap Price, the reporting person will deliver to the Dealer a number of shares of Common Stock equal to 1,805,000 shares minus a number of shares of Common Stock having a value (based on the then market price) equal to $19.4 million. [Continued]

F3 · price: [Cont.] V3 will retain economic and voting rights in the Pledged Shares during the term of the pledge (so long as no event of default or similar event occurs under the Forward Contract or the related pledge agreement).

F1 · derivative.exercise_date: On November 3, 2025, V3 Holding Limited ("V3") entered into a variable prepaid forward sale contract (the "Forward Contract") with an unaffiliated third-party dealer (the "Dealer") covering a maximum of 5,415,000 shares of Common Stock. The Forward Contract obligates V3 to deliver to the Dealer up to 1,805,000 shares of Common Stock in each of three tranches within one business day after each of the three maturity dates of the Forward Contract (September 25, 2026, October 23, 2026 and November 30, 2026), for an aggregate amount of up to 5,415,000 shares. In exchange for assuming this obligation, V3 received a cash payment of $100.0 million in connection with the entry into the Forward Contract. The reporting person pledged 5,415,000 shares of Common Stock (the "Pledged Shares") to secure its obligations under the Forward Contract. [Continued]

F2 · derivative.exercise_date: [Cont.] The number of shares of Common Stock to be delivered to the Dealer on each of the three maturity dates is to be determined as follows:(a) if the closing price of Common Stock during the trading day immediately preceding the maturity date (the "Settlement Price") is less than or equal to $21.4881 (the "Floor Price"), the reporting person will deliver to the Dealer 1,805,000 shares; (b) if the Settlement Price is between the Floor Price and $32.2322 (the "Cap Price"), the reporting person will deliver to the Dealer a number of shares of Common Stock having a value (based on the then market price) equal to $38.8 million; and (c) if the Settlement Price is greater than the Cap Price, the reporting person will deliver to the Dealer a number of shares of Common Stock equal to 1,805,000 shares minus a number of shares of Common Stock having a value (based on the then market price) equal to $19.4 million. [Continued]

F3 · derivative.exercise_date: [Cont.] V3 will retain economic and voting rights in the Pledged Shares during the term of the pledge (so long as no event of default or similar event occurs under the Forward Contract or the related pledge agreement).

F1 · derivative.expiration_date: On November 3, 2025, V3 Holding Limited ("V3") entered into a variable prepaid forward sale contract (the "Forward Contract") with an unaffiliated third-party dealer (the "Dealer") covering a maximum of 5,415,000 shares of Common Stock. The Forward Contract obligates V3 to deliver to the Dealer up to 1,805,000 shares of Common Stock in each of three tranches within one business day after each of the three maturity dates of the Forward Contract (September 25, 2026, October 23, 2026 and November 30, 2026), for an aggregate amount of up to 5,415,000 shares. In exchange for assuming this obligation, V3 received a cash payment of $100.0 million in connection with the entry into the Forward Contract. The reporting person pledged 5,415,000 shares of Common Stock (the "Pledged Shares") to secure its obligations under the Forward Contract. [Continued]

F2 · derivative.expiration_date: [Cont.] The number of shares of Common Stock to be delivered to the Dealer on each of the three maturity dates is to be determined as follows:(a) if the closing price of Common Stock during the trading day immediately preceding the maturity date (the "Settlement Price") is less than or equal to $21.4881 (the "Floor Price"), the reporting person will deliver to the Dealer 1,805,000 shares; (b) if the Settlement Price is between the Floor Price and $32.2322 (the "Cap Price"), the reporting person will deliver to the Dealer a number of shares of Common Stock having a value (based on the then market price) equal to $38.8 million; and (c) if the Settlement Price is greater than the Cap Price, the reporting person will deliver to the Dealer a number of shares of Common Stock equal to 1,805,000 shares minus a number of shares of Common Stock having a value (based on the then market price) equal to $19.4 million. [Continued]

F3 · derivative.expiration_date: [Cont.] V3 will retain economic and voting rights in the Pledged Shares during the term of the pledge (so long as no event of default or similar event occurs under the Forward Contract or the related pledge agreement).

SEC source: 0001123292-25-000561 · form4.xml · nonDerivative · entry 7

V3 Holding Ltd · CIK 0001887845 · 10% owner

Bitfury Top HoldCo B.V. · CIK 0001884407 · 10% owner

Bitfury Holding B.V. · CIK 0001887853 · 10% owner

Vavilovs Valerijs · CIK 0001887811 · 10% owner

Bitfury Group Ltd · CIK 0001887872 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 61,316,694

F7 · price: The price reported in Column 4 represents a weighted average sales price of $21.1167. These shares were sold in multiple transactions at prices ranging from $21.02 to $21.14, inclusive.

F8 · ownership.nature: Bitfury Holding B.V. is the record holder of 4,821,560 shares of Common Stock. Bitfury Top HoldCo B.V. ("Bitfury Top HoldCo") is the record holder of 25,621,822 shares of Common Stock and is the sole owner of Bitfury Holding B.V. As a result, Bitfury Top HoldCo may be deemed to share beneficial ownership of the shares of Common Stock held by Bitfury Holding B.V. V3 Holding Limited ("V3") is the direct holder of 30,873,312 shares of Common Stock. Valerijs Vavilovs is the sole owner of V3, which is the majority owner of Bitfury Group Limited ("BGL"). BGL is the sole owner of Bitfury Top HoldCo. [Continued]

F9 · ownership.nature: [Cont.] As a result of the foregoing relationships, each of Mr. Vavilovs, V3 and BGL may be deemed to share beneficial ownership of the Common Stock beneficially owned by Bitfury Top HoldCo, and Mr. Vavilovs may be deemed to have beneficial ownership of the Common Stock owned by V3. Each of Mr. Vavilovs, V3, Bitfury Top HoldCo, BGL and Bitfury Holding B.V. disclaim beneficial ownership of such shares except to the extent of their respective pecuniary interests therein.

SEC source: 0001123292-25-000561 · form4.xml · nonDerivative · entry 6

V3 Holding Ltd · CIK 0001887845 · 10% owner

Bitfury Top HoldCo B.V. · CIK 0001884407 · 10% owner

Bitfury Holding B.V. · CIK 0001887853 · 10% owner

Vavilovs Valerijs · CIK 0001887811 · 10% owner

Bitfury Group Ltd · CIK 0001887872 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 61,336,479

F6 · price: The price reported in Column 4 represents a weighted average sales price of $20.2901. These shares were sold in multiple transactions at prices ranging from $20.00 to $20.99, inclusive.

F8 · ownership.nature: Bitfury Holding B.V. is the record holder of 4,821,560 shares of Common Stock. Bitfury Top HoldCo B.V. ("Bitfury Top HoldCo") is the record holder of 25,621,822 shares of Common Stock and is the sole owner of Bitfury Holding B.V. As a result, Bitfury Top HoldCo may be deemed to share beneficial ownership of the shares of Common Stock held by Bitfury Holding B.V. V3 Holding Limited ("V3") is the direct holder of 30,873,312 shares of Common Stock. Valerijs Vavilovs is the sole owner of V3, which is the majority owner of Bitfury Group Limited ("BGL"). BGL is the sole owner of Bitfury Top HoldCo. [Continued]

F9 · ownership.nature: [Cont.] As a result of the foregoing relationships, each of Mr. Vavilovs, V3 and BGL may be deemed to share beneficial ownership of the Common Stock beneficially owned by Bitfury Top HoldCo, and Mr. Vavilovs may be deemed to have beneficial ownership of the Common Stock owned by V3. Each of Mr. Vavilovs, V3, Bitfury Top HoldCo, BGL and Bitfury Holding B.V. disclaim beneficial ownership of such shares except to the extent of their respective pecuniary interests therein.

SEC source: 0001887616-25-000008 · wk-form4_1760654988.xml · nonDerivative · entry 1

Kelly Patrick Arthur · CIK 0001887616 · Co-President and COO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,213,919

F1 · shares: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on May 12, 2025.

F2 · price: The sales were executed in multiple trades at prices ranging from $19.95 to $21.99. The price reported reflects the weighted average sale price. The Reporting Person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in footnote (2) to this Form 4.

SEC source: 0001123292-25-000561 · form4.xml · nonDerivative · entry 5

V3 Holding Ltd · CIK 0001887845 · 10% owner

Bitfury Top HoldCo B.V. · CIK 0001884407 · 10% owner

Bitfury Holding B.V. · CIK 0001887853 · 10% owner

Vavilovs Valerijs · CIK 0001887811 · 10% owner

Bitfury Group Ltd · CIK 0001887872 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 61,852,537

F5 · price: The price reported in Column 4 represents a weighted average sales price of $21.8261. These shares were sold in multiple transactions at prices ranging from $21.76 to $21.99, inclusive.

F8 · ownership.nature: Bitfury Holding B.V. is the record holder of 4,821,560 shares of Common Stock. Bitfury Top HoldCo B.V. ("Bitfury Top HoldCo") is the record holder of 25,621,822 shares of Common Stock and is the sole owner of Bitfury Holding B.V. As a result, Bitfury Top HoldCo may be deemed to share beneficial ownership of the shares of Common Stock held by Bitfury Holding B.V. V3 Holding Limited ("V3") is the direct holder of 30,873,312 shares of Common Stock. Valerijs Vavilovs is the sole owner of V3, which is the majority owner of Bitfury Group Limited ("BGL"). BGL is the sole owner of Bitfury Top HoldCo. [Continued]

F9 · ownership.nature: [Cont.] As a result of the foregoing relationships, each of Mr. Vavilovs, V3 and BGL may be deemed to share beneficial ownership of the Common Stock beneficially owned by Bitfury Top HoldCo, and Mr. Vavilovs may be deemed to have beneficial ownership of the Common Stock owned by V3. Each of Mr. Vavilovs, V3, Bitfury Top HoldCo, BGL and Bitfury Holding B.V. disclaim beneficial ownership of such shares except to the extent of their respective pecuniary interests therein.

SEC source: 0001123292-25-000561 · form4.xml · nonDerivative · entry 4

V3 Holding Ltd · CIK 0001887845 · 10% owner

Bitfury Top HoldCo B.V. · CIK 0001884407 · 10% owner

Bitfury Holding B.V. · CIK 0001887853 · 10% owner

Vavilovs Valerijs · CIK 0001887811 · 10% owner

Bitfury Group Ltd · CIK 0001887872 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 62,016,864

F4 · price: The price reported in Column 4 represents a weighted average sales price of $21.1994. These shares were sold in multiple transactions at prices ranging from $20.76 to $21.7598, inclusive.

F8 · ownership.nature: Bitfury Holding B.V. is the record holder of 4,821,560 shares of Common Stock. Bitfury Top HoldCo B.V. ("Bitfury Top HoldCo") is the record holder of 25,621,822 shares of Common Stock and is the sole owner of Bitfury Holding B.V. As a result, Bitfury Top HoldCo may be deemed to share beneficial ownership of the shares of Common Stock held by Bitfury Holding B.V. V3 Holding Limited ("V3") is the direct holder of 30,873,312 shares of Common Stock. Valerijs Vavilovs is the sole owner of V3, which is the majority owner of Bitfury Group Limited ("BGL"). BGL is the sole owner of Bitfury Top HoldCo. [Continued]

F9 · ownership.nature: [Cont.] As a result of the foregoing relationships, each of Mr. Vavilovs, V3 and BGL may be deemed to share beneficial ownership of the Common Stock beneficially owned by Bitfury Top HoldCo, and Mr. Vavilovs may be deemed to have beneficial ownership of the Common Stock owned by V3. Each of Mr. Vavilovs, V3, Bitfury Top HoldCo, BGL and Bitfury Holding B.V. disclaim beneficial ownership of such shares except to the extent of their respective pecuniary interests therein.

SEC source: 0001123292-25-000561 · form4.xml · nonDerivative · entry 3

V3 Holding Ltd · CIK 0001887845 · 10% owner

Bitfury Top HoldCo B.V. · CIK 0001884407 · 10% owner

Bitfury Holding B.V. · CIK 0001887853 · 10% owner

Vavilovs Valerijs · CIK 0001887811 · 10% owner

Bitfury Group Ltd · CIK 0001887872 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 63,506,962

F3 · price: The price reported in Column 4 represents a weighted average sales price of $20.4197. These shares were sold in multiple transactions at prices ranging from $19.76 to $20.7573, inclusive.

F8 · ownership.nature: Bitfury Holding B.V. is the record holder of 4,821,560 shares of Common Stock. Bitfury Top HoldCo B.V. ("Bitfury Top HoldCo") is the record holder of 25,621,822 shares of Common Stock and is the sole owner of Bitfury Holding B.V. As a result, Bitfury Top HoldCo may be deemed to share beneficial ownership of the shares of Common Stock held by Bitfury Holding B.V. V3 Holding Limited ("V3") is the direct holder of 30,873,312 shares of Common Stock. Valerijs Vavilovs is the sole owner of V3, which is the majority owner of Bitfury Group Limited ("BGL"). BGL is the sole owner of Bitfury Top HoldCo. [Continued]

F9 · ownership.nature: [Cont.] As a result of the foregoing relationships, each of Mr. Vavilovs, V3 and BGL may be deemed to share beneficial ownership of the Common Stock beneficially owned by Bitfury Top HoldCo, and Mr. Vavilovs may be deemed to have beneficial ownership of the Common Stock owned by V3. Each of Mr. Vavilovs, V3, Bitfury Top HoldCo, BGL and Bitfury Holding B.V. disclaim beneficial ownership of such shares except to the extent of their respective pecuniary interests therein.

SEC source: 0002090886-25-000003 · wk-form4_1760655177.xml · derivative · entry 1

Mumford Gregory J.D. · CIK 0002090886 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 375,000

Underlying: Common Stock · 375,000 shares

Expires not disclosed

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock. The RSUs have no expiration date.

F2 · derivative.exercise_date: The RSUs will vest in equal installments on each of October 14, 2026, October 14, 2027 and October 14, 2028, subject to the Reporting Person's continuous service on the applicable vesting date.

F1 · derivative.expiration_date: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock. The RSUs have no expiration date.

SEC source: 0001123292-25-000561 · form4.xml · nonDerivative · entry 2

V3 Holding Ltd · CIK 0001887845 · 10% owner

Bitfury Top HoldCo B.V. · CIK 0001884407 · 10% owner

Bitfury Holding B.V. · CIK 0001887853 · 10% owner

Vavilovs Valerijs · CIK 0001887811 · 10% owner

Bitfury Group Ltd · CIK 0001887872 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 64,020,221

F2 · price: The price reported in Column 4 represents a weighted average sales price of $21.1605. These shares were sold in multiple transactions at prices ranging from $21.00 to $21.48, inclusive.

F8 · ownership.nature: Bitfury Holding B.V. is the record holder of 4,821,560 shares of Common Stock. Bitfury Top HoldCo B.V. ("Bitfury Top HoldCo") is the record holder of 25,621,822 shares of Common Stock and is the sole owner of Bitfury Holding B.V. As a result, Bitfury Top HoldCo may be deemed to share beneficial ownership of the shares of Common Stock held by Bitfury Holding B.V. V3 Holding Limited ("V3") is the direct holder of 30,873,312 shares of Common Stock. Valerijs Vavilovs is the sole owner of V3, which is the majority owner of Bitfury Group Limited ("BGL"). BGL is the sole owner of Bitfury Top HoldCo. [Continued]

F9 · ownership.nature: [Cont.] As a result of the foregoing relationships, each of Mr. Vavilovs, V3 and BGL may be deemed to share beneficial ownership of the Common Stock beneficially owned by Bitfury Top HoldCo, and Mr. Vavilovs may be deemed to have beneficial ownership of the Common Stock owned by V3. Each of Mr. Vavilovs, V3, Bitfury Top HoldCo, BGL and Bitfury Holding B.V. disclaim beneficial ownership of such shares except to the extent of their respective pecuniary interests therein.

SEC source: 0001123292-25-000561 · form4.xml · nonDerivative · entry 1

V3 Holding Ltd · CIK 0001887845 · 10% owner

Bitfury Top HoldCo B.V. · CIK 0001884407 · 10% owner

Bitfury Holding B.V. · CIK 0001887853 · 10% owner

Vavilovs Valerijs · CIK 0001887811 · 10% owner

Bitfury Group Ltd · CIK 0001887872 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 64,544,650

F1 · price: The price reported in Column 4 represents a weighted average sales price of $20.6322. These shares were sold in multiple transactions at prices ranging from $20.00 to $20.995, inclusive. The reporting person undertakes to provide to Cipher Mining Inc., any security holder of Cipher Mining Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the ranges set forth in footnotes 1 through 7 of this Form 4.

F8 · ownership.nature: Bitfury Holding B.V. is the record holder of 4,821,560 shares of Common Stock. Bitfury Top HoldCo B.V. ("Bitfury Top HoldCo") is the record holder of 25,621,822 shares of Common Stock and is the sole owner of Bitfury Holding B.V. As a result, Bitfury Top HoldCo may be deemed to share beneficial ownership of the shares of Common Stock held by Bitfury Holding B.V. V3 Holding Limited ("V3") is the direct holder of 30,873,312 shares of Common Stock. Valerijs Vavilovs is the sole owner of V3, which is the majority owner of Bitfury Group Limited ("BGL"). BGL is the sole owner of Bitfury Top HoldCo. [Continued]

F9 · ownership.nature: [Cont.] As a result of the foregoing relationships, each of Mr. Vavilovs, V3 and BGL may be deemed to share beneficial ownership of the Common Stock beneficially owned by Bitfury Top HoldCo, and Mr. Vavilovs may be deemed to have beneficial ownership of the Common Stock owned by V3. Each of Mr. Vavilovs, V3, Bitfury Top HoldCo, BGL and Bitfury Holding B.V. disclaim beneficial ownership of such shares except to the extent of their respective pecuniary interests therein.

SEC source: 0001887623-25-000006 · wk-form4_1760571918.xml · derivative · entry 3

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,838,473

Underlying: Common Stock · 1,419,237 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.

F1 · derivative.exercise_price: Each performance stock unit ("PSU") represents a contingent right to receive one share of Issuer's Common Stock.

F2 · derivative.exercise_date: The PSUs vest, if at all, in three tranches based on the Issuer's achievement of certain market capitalization thresholds. The first tranche of the PSUs vested on October 10, 2025. The PSUs have no expiration date.

F2 · derivative.expiration_date: The PSUs vest, if at all, in three tranches based on the Issuer's achievement of certain market capitalization thresholds. The first tranche of the PSUs vested on October 10, 2025. The PSUs have no expiration date.

SEC source: 0001887623-25-000006 · wk-form4_1760571918.xml · nonDerivative · entry 2

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,523,171

SEC source: 0001887623-25-000006 · wk-form4_1760571918.xml · nonDerivative · entry 1

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,247,692

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.

F1 · price: Each performance stock unit ("PSU") represents a contingent right to receive one share of Issuer's Common Stock.

SEC source: 0001123292-25-000474 · form4.xml · nonDerivative · entry 5

V3 Holding Ltd · CIK 0001887845 · 10% owner

Bitfury Top HoldCo B.V. · CIK 0001884407 · 10% owner

Bitfury Holding B.V. · CIK 0001887853 · 10% owner

Vavilovs Valerijs · CIK 0001887811 · 10% owner

Bitfury Group Ltd · CIK 0001887872 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 65,852,537

F5 · price: The price reported in Column 4 represents a weighted average sales price of $12.3871. These shares were sold in multiple transactions at prices ranging from $12.1405 to $12.76, inclusive.

F6 · ownership.nature: Bitfury Holding B.V. is the record holder of 4,821,560 shares of Common Stock. Bitfury Top HoldCo B.V. ("Bitfury Top HoldCo") is the record holder of 25,621,822 shares of Common Stock and is the sole owner of Bitfury Holding B.V. As a result, Bitfury Top HoldCo may be deemed to share beneficial ownership of the shares of Common Stock held by Bitfury Holding B.V. V3 Holding Limited ("V3") is the direct holder of 35,409,155 shares of Common Stock. Valerijs Vavilovs is the sole owner of V3, which is the majority owner of Bitfury Group Limited ("BGL"). BGL is the sole owner of Bitfury Top HoldCo. [Continued]

F7 · ownership.nature: [Cont.] As a result of the foregoing relationships, each of Mr. Vavilovs, V3 and BGL may be deemed to share beneficial ownership of the Common Stock beneficially owned by Bitfury Top HoldCo, and Mr. Vavilovs may be deemed to have beneficial ownership of the Common Stock owned by V3. Each of Mr. Vavilovs, V3, Bitfury Top HoldCo, BGL and Bitfury Holding B.V. disclaim beneficial ownership of such shares except to the extent of their respective pecuniary interests therein.

SEC source: 0001887623-25-000004 · wk-form4_1759445776.xml · derivative · entry 6

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,487,151

Underlying: Common Stock · 113,225 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.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

F3 · derivative.exercise_date: The RSUs vest in equal quarterly installments over a three-year period, on March 31, June 30, September 30 and December 15 of each year, subject to the Reporting Person's continuous service on the applicable vesting date. The first vesting date occurred on March 31, 2025.

F3 · derivative.expiration_date: The RSUs vest in equal quarterly installments over a three-year period, on March 31, June 30, September 30 and December 15 of each year, subject to the Reporting Person's continuous service on the applicable vesting date. The first vesting date occurred on March 31, 2025.

SEC source: 0001887623-25-000004 · wk-form4_1759445776.xml · derivative · entry 5

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,600,376

Underlying: Common Stock · 166,667 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.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

F2 · derivative.exercise_date: The RSUs vest in equal installments on each of September 13, 2023, September 13, 2024 and September 30, 2025, subject to the Reporting Person's continuous service on the applicable vesting date.

F2 · derivative.expiration_date: The RSUs vest in equal installments on each of September 13, 2023, September 13, 2024 and September 30, 2025, subject to the Reporting Person's continuous service on the applicable vesting date.

SEC source: 0001887623-25-000004 · wk-form4_1759445776.xml · nonDerivative · entry 4

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,828,455

SEC source: 0001887623-25-000004 · wk-form4_1759445776.xml · nonDerivative · entry 3

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,886,257

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.

F1 · price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

SEC source: 0001887623-25-000004 · wk-form4_1759445776.xml · nonDerivative · entry 2

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,773,032

SEC source: 0001887623-25-000004 · wk-form4_1759445776.xml · nonDerivative · entry 1

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,858,116

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.

F1 · price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

SEC source: 0001887616-25-000006 · wk-form4_1759445769.xml · derivative · entry 6

Kelly Patrick Arthur · CIK 0001887616 · Co-President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,412,811

Underlying: Common Stock · 33,968 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.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

F3 · derivative.exercise_date: The RSUs vest in equal quarterly installments over a three-year period, on March 31, June 30, September 30 and December 15 of each year, subject to the Reporting Person's continuous service on the applicable vesting date. The first vesting date occurred on March 31, 2025.

F3 · derivative.expiration_date: The RSUs vest in equal quarterly installments over a three-year period, on March 31, June 30, September 30 and December 15 of each year, subject to the Reporting Person's continuous service on the applicable vesting date. The first vesting date occurred on March 31, 2025.

SEC source: 0001887616-25-000006 · wk-form4_1759445769.xml · derivative · entry 5

Kelly Patrick Arthur · CIK 0001887616 · Co-President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,446,779

Underlying: Common Stock · 366,667 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.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

F2 · derivative.exercise_date: The RSUs vest in equal installments on each of September 13, 2023, September 13, 2024 and September 30, 2025, subject to the Reporting Person's continuous service on the applicable vesting date.

F2 · derivative.expiration_date: The RSUs vest in equal installments on each of September 13, 2023, September 13, 2024 and September 30, 2025, subject to the Reporting Person's continuous service on the applicable vesting date.

SEC source: 0001887616-25-000006 · wk-form4_1759445769.xml · nonDerivative · entry 4

Kelly Patrick Arthur · CIK 0001887616 · Co-President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,240,500

SEC source: 0001887616-25-000006 · wk-form4_1759445769.xml · nonDerivative · entry 3

Kelly Patrick Arthur · CIK 0001887616 · Co-President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,257,841

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.

F1 · price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

SEC source: 0001887616-25-000006 · wk-form4_1759445769.xml · nonDerivative · entry 2

Kelly Patrick Arthur · CIK 0001887616 · Co-President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,223,873

SEC source: 0001887616-25-000006 · wk-form4_1759445769.xml · nonDerivative · entry 1

Kelly Patrick Arthur · CIK 0001887616 · Co-President and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,411,057

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.

F1 · price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

SEC source: 0001270609-25-000005 · wk-form4_1759445751.xml · derivative · entry 6

FARRELL EDWARD J · CIK 0001270609 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,135,891

Underlying: Common Stock · 26,419 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.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

F3 · derivative.exercise_date: The RSUs vest in equal quarterly installments over a three-year period, on March 31, June 30, September 30 and December 15 of each year, subject to the Reporting Person's continuous service on the applicable vesting date. The first vesting date occurred on March 31, 2025.

F3 · derivative.expiration_date: The RSUs vest in equal quarterly installments over a three-year period, on March 31, June 30, September 30 and December 15 of each year, subject to the Reporting Person's continuous service on the applicable vesting date. The first vesting date occurred on March 31, 2025.

SEC source: 0001270609-25-000005 · wk-form4_1759445751.xml · derivative · entry 5

FARRELL EDWARD J · CIK 0001270609 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,162,310

Underlying: Common Stock · 366,667 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.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

F2 · derivative.exercise_date: The RSUs vest in equal installments on each of September 13, 2023, September 13, 2024 and September 30, 2025, subject to the Reporting Person's continuous service on the applicable vesting date.

F2 · derivative.expiration_date: The RSUs vest in equal installments on each of September 13, 2023, September 13, 2024 and September 30, 2025, subject to the Reporting Person's continuous service on the applicable vesting date.

SEC source: 0001270609-25-000005 · wk-form4_1759445751.xml · nonDerivative · entry 4

FARRELL EDWARD J · CIK 0001270609 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,482,622

SEC source: 0001270609-25-000005 · wk-form4_1759445751.xml · nonDerivative · entry 3

FARRELL EDWARD J · CIK 0001270609 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,496,109

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.

F1 · price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

SEC source: 0001270609-25-000005 · wk-form4_1759445751.xml · nonDerivative · entry 2

FARRELL EDWARD J · CIK 0001270609 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,469,690

SEC source: 0001270609-25-000005 · wk-form4_1759445751.xml · nonDerivative · entry 1

FARRELL EDWARD J · CIK 0001270609 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,656,874

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.

F1 · price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

SEC source: 0001887627-25-000005 · wk-form4_1759445763.xml · derivative · entry 6

Iwaschuk William · CIK 0001887627 · Co-President and CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,412,811

Underlying: Common Stock · 33,968 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.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

F3 · derivative.exercise_date: The RSUs vest in equal quarterly installments over a three-year period, on March 31, June 30, September 30 and December 15 of each year, subject to the Reporting Person's continuous service on the applicable vesting date. The first vesting date occurred on March 31, 2025.

F3 · derivative.expiration_date: The RSUs vest in equal quarterly installments over a three-year period, on March 31, June 30, September 30 and December 15 of each year, subject to the Reporting Person's continuous service on the applicable vesting date. The first vesting date occurred on March 31, 2025.

SEC source: 0001887627-25-000005 · wk-form4_1759445763.xml · derivative · entry 5

Iwaschuk William · CIK 0001887627 · Co-President and CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,446,779

Underlying: Common Stock · 366,667 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.

F1 · derivative.exercise_price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

F2 · derivative.exercise_date: The RSUs vest in equal installments on each of September 13, 2023, September 13, 2024 and September 30, 2025, subject to the Reporting Person's continuous service on the applicable vesting date.

F2 · derivative.expiration_date: The RSUs vest in equal installments on each of September 13, 2023, September 13, 2024 and September 30, 2025, subject to the Reporting Person's continuous service on the applicable vesting date.

SEC source: 0001887627-25-000005 · wk-form4_1759445763.xml · nonDerivative · entry 4

Iwaschuk William · CIK 0001887627 · Co-President and CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,227,582

SEC source: 0001887627-25-000005 · wk-form4_1759445763.xml · nonDerivative · entry 3

Iwaschuk William · CIK 0001887627 · Co-President and CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,246,367

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.

F1 · price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

SEC source: 0001887627-25-000005 · wk-form4_1759445763.xml · nonDerivative · entry 2

Iwaschuk William · CIK 0001887627 · Co-President and CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,212,399

SEC source: 0001887627-25-000005 · wk-form4_1759445763.xml · nonDerivative · entry 1

Iwaschuk William · CIK 0001887627 · Co-President and CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,415,166

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.

F1 · price: Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

SEC source: 0001123292-25-000474 · form4.xml · nonDerivative · entry 4

V3 Holding Ltd · CIK 0001887845 · 10% owner

Bitfury Top HoldCo B.V. · CIK 0001884407 · 10% owner

Bitfury Holding B.V. · CIK 0001887853 · 10% owner

Vavilovs Valerijs · CIK 0001887811 · 10% owner

Bitfury Group Ltd · CIK 0001887872 · 10% owner

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

10b5-1 filing: No plan indicated

Ownership: Indirect · See Footnote

Disclosed balance after: 67,852,537

F4 · price: The price reported in Column 4 represents a weighted average sales price of $12.5200. These shares were sold in multiple transactions at prices ranging from $12.405 to $12.67, inclusive.

F6 · ownership.nature: Bitfury Holding B.V. is the record holder of 4,821,560 shares of Common Stock. Bitfury Top HoldCo B.V. ("Bitfury Top HoldCo") is the record holder of 25,621,822 shares of Common Stock and is the sole owner of Bitfury Holding B.V. As a result, Bitfury Top HoldCo may be deemed to share beneficial ownership of the shares of Common Stock held by Bitfury Holding B.V. V3 Holding Limited ("V3") is the direct holder of 35,409,155 shares of Common Stock. Valerijs Vavilovs is the sole owner of V3, which is the majority owner of Bitfury Group Limited ("BGL"). BGL is the sole owner of Bitfury Top HoldCo. [Continued]

F7 · ownership.nature: [Cont.] As a result of the foregoing relationships, each of Mr. Vavilovs, V3 and BGL may be deemed to share beneficial ownership of the Common Stock beneficially owned by Bitfury Top HoldCo, and Mr. Vavilovs may be deemed to have beneficial ownership of the Common Stock owned by V3. Each of Mr. Vavilovs, V3, Bitfury Top HoldCo, BGL and Bitfury Holding B.V. disclaim beneficial ownership of such shares except to the extent of their respective pecuniary interests therein.