CIFR

SEC source: 0001819989-24-000012 · wk-form4_1726608096.xml · nonDerivative · entry 2

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,302,838

SEC source: 0001819989-24-000012 · wk-form4_1726608096.xml · nonDerivative · entry 1

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,387,922

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: 0001062993-24-016438 · form4.xml · nonDerivative · entry 6

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 100,047,588

F5 · price: The price reported in Column 4 represents a weighted average sales price of $2.9592. These shares were sold in multiple transactions at prices ranging from $2.84 to $3.115, inclusive.

F1 · 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 44,911,544 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 50,314,484 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]

F2 · 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: 0001062993-24-016438 · form4.xml · nonDerivative · entry 5

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 100,623,229

F1 · 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 44,911,544 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 50,314,484 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]

F2 · 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: 0001819989-24-000010 · wk-form4_1726088918.xml · nonDerivative · entry 2

DYKES ROBERT R B · CIK 0001194101 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,103,745

F2 · shares: Shares of Common Stock were granted to Reporting Person in a distribution from Bitfury Top Holdco B.V. for consideration consisting of past services valued at $2.97 per share (the average price of the Common Stock on the Nasdaq on the date of sale).

SEC source: 0001062993-24-016438 · form4.xml · nonDerivative · entry 4

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 102,044,892

F4 · price: The price reported in Column 4 represents a weighted average sales price of $2.8669. These shares were sold in multiple transactions at prices ranging from $2.74 to $2.955, inclusive.

F1 · 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 44,911,544 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 50,314,484 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]

F2 · 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: 0001062993-24-016438 · form4.xml · nonDerivative · entry 3

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 102,524,341

F1 · 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 44,911,544 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 50,314,484 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]

F2 · 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: 0001819989-24-000010 · wk-form4_1726088918.xml · nonDerivative · entry 1

DYKES ROBERT R B · CIK 0001194101 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 916,412

F1 · shares: Shares of Common Stock were granted to Reporting Person in a distribution from Bitfury Top Holdco B.V. for consideration consisting of past services valued at $2.87 per share (the average price of the Common Stock on the Nasdaq on the date of sale).

SEC source: 0001819989-24-000008 · wk-form4_1725920464.xml · nonDerivative · entry 2

DYKES ROBERT R B · CIK 0001194101 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 729,079

F2 · shares: Shares of Common Stock were granted to Reporting Person in a distribution from Bitfury Top Holdco B.V. for consideration consisting of past services valued at $2.74 per share (the average price of the Common Stock on the Nasdaq on the date of sale).

SEC source: 0001062993-24-016438 · form4.xml · nonDerivative · entry 2

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 103,946,004

F3 · price: The price reported in Column 4 represents a weighted average sales price of $2.7487. These shares were sold in multiple transactions at prices ranging from $2.655 to $2.97, 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 range set forth in footnotes 3 through 5 of this Form 4.

F1 · 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 44,911,544 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 50,314,484 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]

F2 · 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: 0001062993-24-016438 · form4.xml · nonDerivative · entry 1

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 104,425,453

F1 · 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 44,911,544 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 50,314,484 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]

F2 · 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: 0001062993-24-016263 · form4.xml · nonDerivative · entry 4

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 105,847,116

F4 · price: The price reported in Column 4 represents a weighted average sales price of $2.9266. These shares were sold in multiple transactions at prices ranging from $2.87 to $3.031, inclusive.

F1 · 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 50,711,071 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 50,314,484 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]

F2 · 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: 0001062993-24-016263 · form4.xml · nonDerivative · entry 3

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 106,326,565

F1 · 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 50,711,071 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 50,314,484 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]

F2 · 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: 0001819989-24-000008 · wk-form4_1725920464.xml · nonDerivative · entry 1

DYKES ROBERT R B · CIK 0001194101 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 541,746

F1 · shares: Shares of Common Stock were granted to Reporting Person in a distribution from Bitfury Top Holdco B.V. for consideration consisting of past services valued at $2.92 per share (the average price of the Common Stock on the Nasdaq on the date of sale).

SEC source: 0001819989-24-000006 · wk-form4_1725656507.xml · nonDerivative · entry 1

DYKES ROBERT R B · CIK 0001194101 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 354,413

F1 · shares: Shares of Common Stock were granted to Reporting Person in a distribution from Bitfury Top Holdco B.V. for consideration consisting of past services valued at $3.03 per share (the average price of the Common Stock on the Nasdaq on the date of sale).

SEC source: 0001062993-24-016263 · form4.xml · nonDerivative · entry 2

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 107,748,228

F3 · price: The price reported in Column 4 represents a weighted average sales price of $3.0072. These shares were sold in multiple transactions at prices ranging from $2.93 to $3.14, 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 range set forth in footnotes 3 and 4 of this Form 4.

F1 · 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 50,711,071 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 50,314,484 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]

F2 · 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: 0001062993-24-016263 · form4.xml · nonDerivative · entry 1

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 108,227,677

F1 · 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 50,711,071 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 50,314,484 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]

F2 · 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: 0001062993-24-014015 · form4.xml · nonDerivative · entry 3

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 109,649,340

F3 · price: The price reported in Column 4 represents a weighted average sales price of $6.1712. These shares were sold in multiple transactions at prices ranging from $5.91 to $6.38, inclusive.

F4 · balance_after: The sales reported on this Form 4 were made from the share reserve previously disclosed in Amendment No. 5 to Schedule 13D filed by the Reporting Persons on May 16, 2024. Following the sales reported on this Form 4, the Reporting Persons have completed the sale of all 9,165,239 shares allocated to the share reserve.

F5 · 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 54,513,296 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 50,314,484 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]

F6 · 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: 0001062993-24-014015 · form4.xml · nonDerivative · entry 2

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 109,911,187

F2 · price: The price reported in Column 4 represents a weighted average sales price of $7.0099. These shares were sold in multiple transactions at prices ranging from $6.97 to $7.10, inclusive.

F5 · 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 54,513,296 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 50,314,484 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]

F6 · 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: 0001062993-24-014015 · form4.xml · nonDerivative · entry 1

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 109,927,851

F1 · price: The price reported in Column 4 represents a weighted average sales price of $6.2117. These shares were sold in multiple transactions at prices ranging from $5.91 to $6.87, 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 range set forth in footnotes 1 through 3 of this Form 4.

F5 · 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 54,513,296 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 50,314,484 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]

F6 · 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: 0001062993-24-013238 · form4.xml · nonDerivative · entry 2

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 110,520,831

F2 · price: The price reported in Column 4 represents a weighted average sales price of $4.1207. These shares were sold in multiple transactions at prices ranging from $4.0872 to $4.20, inclusive.

F3 · balance_after: The sales reported on this Form 4 were made from the share reserve previously disclosed in Amendment No. 5 to Schedule 13D filed by the Reporting Persons on May 16, 2024. Following the sales reported on this Form 4, the Reporting Persons expect to sell approximately 0.9 million additional shares from the share reserve, subject to market conditions and other matters, as previously reported.

F4 · 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 55,384,787 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 50,314,484 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]

F5 · 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: 0001062993-24-013238 · form4.xml · nonDerivative · entry 1

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 111,011,106

F1 · price: The price reported in Column 4 represents a weighted average sales price of $4.1683. These shares were sold in multiple transactions at prices ranging from $4.05 to $4.385, 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 range set forth in footnotes 1 and 2 of this Form 4.

F4 · 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 55,384,787 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 50,314,484 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]

F5 · 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: 0001062993-24-013071 · form4.xml · nonDerivative · entry 3

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 111,489,712

F3 · price: The price reported in Column 4 represents a weighted average sales price of $4.2986. These shares were sold in multiple transactions at prices ranging from $4.20 to $4.45, inclusive.

F4 · balance_after: The sales reported on this Form 4 were made from the share reserve previously disclosed in Amendment No. 5 to Schedule 13D filed by the Reporting Persons on May 16, 2024. Following the sales reported on this Form 4, the Reporting Persons expect to sell approximately 1.9 million additional shares from the share reserve, subject to market conditions and other matters, as previously reported.

F5 · 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 56,353,668 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 50,314,484 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]

F6 · 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: 0001062993-24-013071 · form4.xml · nonDerivative · entry 2

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 111,956,627

F2 · price: The price reported in Column 4 represents a weighted average sales price of $4.2635. These shares were sold in multiple transactions at prices ranging from $4.21 to $4.38, inclusive.

F5 · 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 56,353,668 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 50,314,484 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]

F6 · 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: 0001062993-24-013071 · form4.xml · nonDerivative · entry 1

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 112,410,700

F1 · price: The price reported in Column 4 represents a weighted average sales price of $4.3293. These shares were sold in multiple transactions at prices ranging from $4.2659 to $4.3989, 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 range set forth in footnotes 1 through 3 of this Form 4.

F5 · 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 56,353,668 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 50,314,484 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]

F6 · 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: 0001062993-24-012912 · form4.xml · nonDerivative · entry 3

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 112,854,530

F3 · price: The price reported in Column 4 represents a weighted average sales price of $4.5111. These shares were sold in multiple transactions at prices ranging from $4.40 to $4.61, inclusive.

F4 · balance_after: The sales reported on this Form 4 were made from the share reserve previously disclosed in Amendment No. 5 to Schedule 13D filed by the Reporting Persons on May 16, 2024. Following the sales reported on this Form 4, the Reporting Persons expect to sell approximately 3.2 million additional shares from the share reserve, subject to market conditions and other matters, as previously reported.

F5 · 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 57,718,486 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 50,314,484 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]

F6 · 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: 0001062993-24-012912 · form4.xml · nonDerivative · entry 2

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 113,271,323

F2 · price: The price reported in Column 4 represents a weighted average sales price of $5.5418. These shares were sold in multiple transactions at prices ranging from $5.35 to $5.81, inclusive.

F5 · 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 57,718,486 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 50,314,484 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]

F6 · 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: 0001062993-24-012912 · form4.xml · nonDerivative · entry 1

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 113,665,680

F1 · price: The price reported in Column 4 represents a weighted average sales price of $4.7959. These shares were sold in multiple transactions at prices ranging from $4.70 to $5.06, 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 range set forth in footnotes 1 through 3 of this Form 4.

F5 · 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 57,718,486 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 50,314,484 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]

F6 · 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: 0001062993-24-012730 · form4.xml · nonDerivative · entry 3

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 114,053,847

F3 · price: The price reported in Column 4 represents a weighted average sales price of $4.8241. These shares were sold in multiple transactions at prices ranging from $4.64 to $5.17, inclusive.

F4 · balance_after: The sales reported on this Form 4 were made from the share reserve previously disclosed in Amendment No. 5 to Schedule 13D filed by the Reporting Persons on May 16, 2024. Following the sales reported on this Form 4, the Reporting Persons expect to sell approximately 4.4 million additional shares from the share reserve, subject to market conditions and other matters, as previously reported.

F5 · 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 58,917,803 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 50,314,484 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]

F6 · 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: 0001062993-24-012730 · form4.xml · nonDerivative · entry 2

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 114,430,167

F2 · price: The price reported in Column 4 represents a weighted average sales price of $5.0045. These shares were sold in multiple transactions at prices ranging from $4.91 to $5.22, inclusive.

F5 · 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 58,917,803 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 50,314,484 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]

F6 · 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: 0000950170-24-075159 · ownership.xml · derivative · entry 3

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,411,814

Underlying: Common Stock · 333,333 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 June 14, 2024, June 14, 2025 and June 14, 2026, 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 June 14, 2024, June 14, 2025 and June 14, 2026, subject to the Reporting Person's continuous service on the applicable vesting date.

SEC source: 0000950170-24-075159 · ownership.xml · nonDerivative · entry 2

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,221,255

SEC source: 0000950170-24-075159 · ownership.xml · nonDerivative · entry 1

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,391,422

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: 0000950170-24-075154 · ownership.xml · derivative · entry 3

FARRELL EDWARD J · CIK 0001270609 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,398,021

Underlying: Common Stock · 166,666 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 June 14, 2024, June 14, 2025 and June 14, 2026, 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 June 14, 2024, June 14, 2025 and June 14, 2026, subject to the Reporting Person's continuous service on the applicable vesting date.

SEC source: 0000950170-24-075154 · ownership.xml · nonDerivative · entry 2

FARRELL EDWARD J · CIK 0001270609 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 699,873

SEC source: 0000950170-24-075154 · ownership.xml · nonDerivative · entry 1

FARRELL EDWARD J · CIK 0001270609 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 789,956

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: 0000950170-24-075151 · ownership.xml · derivative · entry 3

Iwaschuk William · CIK 0001887627 · Co-President and CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,711,500

Underlying: Common Stock · 166,666 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 June 14, 2024, June 14, 2025 and June 14, 2026, 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 June 14, 2024, June 14, 2025 and June 14, 2026, subject to the Reporting Person's continuous service on the applicable vesting date.

SEC source: 0000950170-24-075151 · ownership.xml · nonDerivative · entry 2

Iwaschuk William · CIK 0001887627 · Co-President and CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 605,248

SEC source: 0000950170-24-075151 · ownership.xml · nonDerivative · entry 1

Iwaschuk William · CIK 0001887627 · Co-President and CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 696,998

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: 0000950170-24-075146 · ownership.xml · derivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,711,500

Underlying: Common Stock · 166,666 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 June 14, 2024, June 14, 2025 and June 14, 2026, 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 June 14, 2024, June 14, 2025 and June 14, 2026, subject to the Reporting Person's continuous service on the applicable vesting date.

SEC source: 0000950170-24-075146 · ownership.xml · nonDerivative · entry 2

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 638,690

SEC source: 0000950170-24-075146 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 723,773

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: 0000950170-24-073637 · ownership.xml · nonDerivative · entry 1

GROSSMAN CARY M · CIK 0001240259 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 240,829

F1 · price: The price reported in Column 4 represents a weighted average sales price of $4.8529. These shares were sold in multiple transactions at prices ranging from $4.85 to $4.865, 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 range set forth in footnote 1 of this Form 4.

SEC source: 0001062993-24-012730 · form4.xml · nonDerivative · entry 1

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 114,796,209

F1 · price: The price reported in Column 4 represents a weighted average sales price of $4.949. These shares were sold in multiple transactions at prices ranging from $4.64 to $5.11, 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 range set forth in footnotes 1 through 3 of this Form 4.

F5 · 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 58,917,803 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 50,314,484 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]

F6 · 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: 0001062993-24-012522 · form4.xml · nonDerivative · entry 3

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 115,145,728

F3 · price: The price reported in Column 4 represents a weighted average sales price of $4.5828. These shares were sold in multiple transactions at prices ranging from $4.32 to $4.74, inclusive.

F4 · balance_after: The sales reported on this Form 4 were made from the share reserve previously disclosed in Amendment No. 5 to Schedule 13D filed by the Reporting Persons on May 16, 2024. Following the sales reported on this Form 4, the Reporting Persons expect to sell approximately 5.5 million additional shares from the share reserve, subject to market conditions and other matters, as previously reported.

F5 · 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 60,009,684 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 50,314,484 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]

F6 · 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: 0000950170-24-073166 · ownership.xml · nonDerivative · entry 1

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,058,089

F1 · kind: The transaction reported shows the Reporting Person's charitable gift of shares of the Issuer's Common Stock to two educational institutions.

SEC source: 0001062993-24-012522 · form4.xml · nonDerivative · entry 2

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 115,482,105

F2 · price: The price reported in Column 4 represents a weighted average sales price of $4.0746. These shares were sold in multiple transactions at prices ranging from $3.95 to $4.20, inclusive.

F5 · 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 60,009,684 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 50,314,484 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]

F6 · 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: 0001062993-24-012522 · form4.xml · nonDerivative · entry 1

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 115,790,611

F1 · price: The price reported in Column 4 represents a weighted average sales price of $4.2109. These shares were sold in multiple transactions at prices ranging from $3.99 to $4.39, 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 range set forth in footnotes 1 through 3 of this Form 4.

F5 · 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 60,009,684 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 50,314,484 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]

F6 · 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: 0001062993-24-012096 · form4.xml · nonDerivative · entry 3

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 116,110,358

F3 · price: The price reported in Column 4 represents a weighted average sales price of $4.16. These shares were sold in multiple transactions at prices ranging from $4.05 to $4.35, inclusive.

F4 · balance_after: The sales reported on this Form 4 were made from the share reserve previously disclosed in Amendment No. 5 to Schedule 13D filed by the Reporting Persons on May 16, 2024. Following the sales reported on this Form 4, the Reporting Persons expect to sell approximately 6.5 million additional shares from the share reserve, subject to market conditions and other matters, as previously reported.

F5 · 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 60,974,314 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 50,314,484 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]

F6 · 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: 0001062993-24-012096 · form4.xml · nonDerivative · entry 2

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

V3 Holding Ltd · CIK 0001887845 · 10% owner

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

Vavilovs Valerijis · 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: 116,409,308

F2 · price: The price reported in Column 4 represents a weighted average sales price of $3.9145. These shares were sold in multiple transactions at prices ranging from $3.75 to $4.045, inclusive.

F5 · 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 60,974,314 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 50,314,484 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]

F6 · 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.