CIFR

SEC source: 0001819989-25-000009 · wk-form4_1740781810.xml · derivative · entry 1

FARRELL EDWARD J · CIK 0001270609 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,748,483

Underlying: Common Stock · 317,029 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.

F2 · 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, with the first vesting date occurring on March 31, 2025, subject to the Reporting Person's continuous service on the applicable vesting date.

F2 · 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, with the first vesting date occurring on March 31, 2025, subject to the Reporting Person's continuous service on the applicable vesting date.

SEC source: 0001819989-25-000007 · wk-form4_1740781667.xml · derivative · entry 1

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,326,826

Underlying: Common Stock · 1,358,696 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.

F2 · 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, with the first vesting date occurring on March 31, 2025, subject to the Reporting Person's continuous service on the applicable vesting date.

F2 · 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, with the first vesting date occurring on March 31, 2025, subject to the Reporting Person's continuous service on the applicable vesting date.

SEC source: 0001819989-24-000040 · wk-form4_1734747510.xml · derivative · entry 6

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,968,130

Underlying: Common Stock · 1,567,398 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: Represents the early vesting and settlement of the first installment of the RSU award granted on March 9, 2024.

F3 · derivative.expiration_date: Represents the early vesting and settlement of the first installment of the RSU award granted on March 9, 2024.

SEC source: 0001819989-24-000040 · wk-form4_1734747510.xml · derivative · entry 5

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,535,528

Underlying: Common Stock · 709,619 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: Represents the early vesting and settlement of the final installment of the RSU award granted on November 17, 2021.

F2 · derivative.expiration_date: Represents the early vesting and settlement of the final installment of the RSU award granted on November 17, 2021.

SEC source: 0001819989-24-000040 · wk-form4_1734747510.xml · nonDerivative · entry 4

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,417,437

SEC source: 0001819989-24-000040 · wk-form4_1734747510.xml · nonDerivative · entry 3

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,217,594

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: 0001819989-24-000040 · wk-form4_1734747510.xml · nonDerivative · entry 2

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,650,196

SEC source: 0001819989-24-000040 · wk-form4_1734747510.xml · nonDerivative · entry 1

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,012,457

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: 0001819989-24-000039 · wk-form4_1734747484.xml · derivative · entry 6

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,640,440

Underlying: Common Stock · 470,219 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: Represents the early vesting and settlement of the first installment of the RSU award granted on March 9, 2024.

F3 · derivative.expiration_date: Represents the early vesting and settlement of the first installment of the RSU award granted on March 9, 2024.

SEC source: 0001819989-24-000039 · wk-form4_1734747484.xml · derivative · entry 5

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,110,659

Underlying: Common Stock · 234,174 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: Represents the early vesting and settlement of the final installment of the RSU award granted on November 17, 2021.

F2 · derivative.expiration_date: Represents the early vesting and settlement of the final installment of the RSU award granted on November 17, 2021.

SEC source: 0001819989-24-000039 · wk-form4_1734747484.xml · nonDerivative · entry 4

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,009,070

SEC source: 0001819989-24-000039 · wk-form4_1734747484.xml · nonDerivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,249,117

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: 0001819989-24-000039 · wk-form4_1734747484.xml · nonDerivative · entry 2

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 778,898

SEC source: 0001819989-24-000039 · wk-form4_1734747484.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 898,444

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: 0001819989-24-000038 · wk-form4_1734747442.xml · derivative · entry 6

Iwaschuk William · CIK 0001887627 · Co-President and CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,640,440

Underlying: Common Stock · 470,219 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: Represents the early vesting and settlement of the first installment of the RSU award granted on March 9, 2024.

F3 · derivative.expiration_date: Represents the early vesting and settlement of the first installment of the RSU award granted on March 9, 2024.

SEC source: 0001819989-24-000038 · wk-form4_1734747442.xml · derivative · entry 5

Iwaschuk William · CIK 0001887627 · Co-President and CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,110,659

Underlying: Common Stock · 234,174 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: Represents the early vesting and settlement of the final installment of the RSU award granted on November 17, 2021.

F2 · derivative.expiration_date: Represents the early vesting and settlement of the final installment of the RSU award granted on November 17, 2021.

SEC source: 0001819989-24-000038 · wk-form4_1734747442.xml · nonDerivative · entry 4

Iwaschuk William · CIK 0001887627 · Co-President and CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 933,410

SEC source: 0001819989-24-000038 · wk-form4_1734747442.xml · nonDerivative · entry 3

Iwaschuk William · CIK 0001887627 · Co-President and CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,193,442

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: 0001819989-24-000038 · wk-form4_1734747442.xml · nonDerivative · entry 2

Iwaschuk William · CIK 0001887627 · Co-President and CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 723,223

SEC source: 0001819989-24-000038 · wk-form4_1734747442.xml · nonDerivative · entry 1

Iwaschuk William · CIK 0001887627 · Co-President and CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 852,722

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: 0001819989-24-000037 · wk-form4_1734747402.xml · derivative · entry 6

FARRELL EDWARD J · CIK 0001270609 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,431,454

Underlying: Common Stock · 365,726 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: Represents the early vesting and settlement of the first installment of the RSU award granted on March 9, 2024.

F3 · derivative.expiration_date: Represents the early vesting and settlement of the first installment of the RSU award granted on March 9, 2024.

SEC source: 0001819989-24-000037 · wk-form4_1734747402.xml · derivative · entry 5

FARRELL EDWARD J · CIK 0001270609 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,797,180

Underlying: Common Stock · 234,174 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: Represents the early vesting and settlement of the final installment of the RSU award granted on November 17, 2021.

F2 · derivative.expiration_date: Represents the early vesting and settlement of the final installment of the RSU award granted on November 17, 2021.

SEC source: 0001819989-24-000037 · wk-form4_1734747402.xml · nonDerivative · entry 4

FARRELL EDWARD J · CIK 0001270609 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,173,006

SEC source: 0001819989-24-000037 · wk-form4_1734747402.xml · nonDerivative · entry 3

FARRELL EDWARD J · CIK 0001270609 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,359,710

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: 0001819989-24-000037 · wk-form4_1734747402.xml · nonDerivative · entry 2

FARRELL EDWARD J · CIK 0001270609 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 993,984

SEC source: 0001819989-24-000037 · wk-form4_1734747402.xml · nonDerivative · entry 1

FARRELL EDWARD J · CIK 0001270609 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,113,530

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: 0001062993-24-020853 · 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 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: 97,570,557

F2 · price: The price reported in Column 4 represents a weighted average sales price of $7.417659. These shares were sold in multiple transactions at prices ranging from $7.350232 to $7.50, inclusive.

F3 · 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 43,911,544 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 48,837,453 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]

F4 · 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: 0001062993-24-020909 · 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 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: 97,567,437

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 43,911,544 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 48,834,333 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: 0001062993-24-020853 · 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 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: 97,820,557

F1 · price: The price reported in Column 4 represents a weighted average sales price of $7.234338. These shares were sold in multiple transactions at prices ranging from $7.123393 to $7.35, 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 and 2 of this Form 4.

F3 · 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 43,911,544 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 48,837,453 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]

F4 · 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: 0001062993-24-020261 · 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 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: 98,120,557

F2 · price: The price reported in Column 4 represents a weighted average sales price of $7.378169. These shares were sold in multiple transactions at prices ranging from $7.354220 to $7.40, inclusive.

F3 · 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 43,911,544 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 49,387,453 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]

F4 · 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: 0001062993-24-020261 · 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 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: 98,297,588

F1 · price: The price reported in Column 4 represents a weighted average sales price of $7.227269. These shares were sold in multiple transactions at prices ranging from $7.20 to $7.250165, 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.

F3 · 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 43,911,544 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 49,387,453 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]

F4 · 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: 0001062993-24-019948 · 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: 98,389,570

F1 · price: The price reported in Column 4 represents a weighted average sales price of $7.165052. These shares were sold in multiple transactions at prices ranging from $7.05 to $7.25, 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 this footnote.

F2 · 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 43,911,544 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 49,656,466 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]

F3 · 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: 0001062993-24-019573 · 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: 98,667,188

F3 · price: The price reported in Column 4 represents a weighted average sales price of $7.020857. These shares were sold in multiple transactions at prices ranging from $7.000146 to $7.05022, 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 this footnote.

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 43,911,544 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 49,934,084 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: 0001062993-24-019573 · 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: 98,740,688

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 43,911,544 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 49,934,084 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: 0001819989-24-000032 · wk-form4_1731449124.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 664,270

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 17, 2024.

F2 · price: The sales were executed in multiple trades at prices ranging from $7.10 to $7.19. 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: 0001062993-24-018817 · 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: 98,747,588

F1 · price: The price reported in Column 4 represents a weighted average sales price of $6.60. These shares were sold in multiple transactions at prices ranging from $6.50 to $6.70, 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 this footnote.

F2 · 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 43,911,544 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 50,014,484 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]

F3 · 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: 0001819989-24-000030 · wk-form4_1731014149.xml · nonDerivative · entry 1

Iwaschuk William · CIK 0001887627 · Co-President and CLO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 618,548

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 11, 2024.

SEC source: 0001062993-24-018071 · 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: 99,047,588

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 43,911,544 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: 0001819989-24-000022 · wk-form4_1729198743.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 717,431

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 17, 2024.

F2 · price: The sales were executed in multiple trades at prices ranging from $4.24 to $4.60. 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: 0001819989-24-000020 · wk-form4_1727390084.xml · nonDerivative · entry 1

Iwaschuk William · CIK 0001887627 · Co-President and CLO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 619,148

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 11, 2024.

F2 · price: The sales were executed in multiple trades at prices ranging from $3.64 to $4.17. 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: 0001819989-24-000018 · wk-form4_1726608528.xml · derivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,344,833

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 13, 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 13, 2025, subject to the Reporting Person's continuous service on the applicable vesting date.

SEC source: 0001819989-24-000018 · wk-form4_1726608528.xml · nonDerivative · entry 2

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 807,173

SEC source: 0001819989-24-000018 · wk-form4_1726608528.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,005,357

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: 0001819989-24-000016 · wk-form4_1726608401.xml · derivative · entry 3

Iwaschuk William · CIK 0001887627 · Co-President and CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,344,833

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 13, 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 13, 2025, subject to the Reporting Person's continuous service on the applicable vesting date.

SEC source: 0001819989-24-000016 · wk-form4_1726608401.xml · nonDerivative · entry 2

Iwaschuk William · CIK 0001887627 · Co-President and CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 769,148

SEC source: 0001819989-24-000016 · wk-form4_1726608401.xml · nonDerivative · entry 1

Iwaschuk William · CIK 0001887627 · Co-President and CLO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 971,915

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: 0001819989-24-000014 · wk-form4_1726608281.xml · derivative · entry 3

FARRELL EDWARD J · CIK 0001270609 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,031,354

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 13, 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 13, 2025, subject to the Reporting Person's continuous service on the applicable vesting date.

SEC source: 0001819989-24-000014 · wk-form4_1726608281.xml · nonDerivative · entry 2

FARRELL EDWARD J · CIK 0001270609 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 879,356

SEC source: 0001819989-24-000014 · wk-form4_1726608281.xml · nonDerivative · entry 1

FARRELL EDWARD J · CIK 0001270609 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,066,540

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: 0001819989-24-000012 · wk-form4_1726608096.xml · derivative · entry 3

Page Tyler · CIK 0001887623 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,245,147

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 13, 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 13, 2025, subject to the Reporting Person's continuous service on the applicable vesting date.