X0508 4 2024-02-26 0001819989 Cipher Mining Inc. CIFR 0001884407 Bitfury Top HoldCo B.V. STRAWINSKYLAAN 3501 AMSTERDAM P7 1077 ZX NETHERLANDS 0 0 1 0 0001887845 V3 Holding Ltd 4TH FL HARBOUR PL 103 S CHURCH ST, 10240 GEORGE TOWN E9 KY1-1002 CAYMAN ISLANDS 0 0 1 0 0001887853 Bitfury Holding B.V. STRAWINSKYLAAN 3501 AMSTERDAM P7 1077 ZX NETHERLANDS 0 0 1 0 0001887811 Vavilovs Valerijis STRAWINSKYLAAN 3501 AMSTERDAM P7 1077 ZX NETHERLANDS 0 0 1 0 0001887872 Bitfury Group Ltd 6TH FLOOR ONE LONDON WALL LONDON X0 EC2Y 5EB UNITED KINGDOM 0 0 1 0 0 Common Stock 2024-02-26 4 J 0 107304200 0 D 118814579 I See Footnote On February 26, 2024, (i) Bitfury Top HoldCo B.V. ("Bitfury Top HoldCo") transferred an aggregate of 107,304,200 shares of the Issuer's Common Stock to its parent company, Bitfury Group Limited ("BGL"), in a distribution for no consideration, and then (ii) on the same date, BGL distributed the 107,304,200 shares of the Issuer's Common Stock to its shareholders in a pro rata distribution for no consideration. As part of the distribution, V3 Holding Limited ("V3"), the majority owner of BGL, received 50,314,484 shares of the Issuer's Common Stock, representing its proportional interest in BGL. Following the distribution, Bitfury Holding B.V. is the record holder of 4,821,560 shares of Common Stock. Bitfury Top HoldCo is the record holder of 63,678,535 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 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 BGL. BGL is the sole owner of Bitfury Top HoldCo. [Continued] [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. Stijn Ehren, Managing Director of Bitfury Top HoldCo B.V., By: /s/ Stijn Ehren 2024-02-27 Stijn Ehren, Managing Director of Bitfury Holding B.V., By: /s/ Stijn Ehren 2024-02-27 Valerijs Vavilovs, Director of Bitfury Group Limited, By: /s/ Valerijs Vavilovs 2024-02-27 Valerijs Vavilovs, Director of V3 Holding Limited, By: /s/ Valerijs Vavilovs 2024-02-27 Valerijs Vavilovs, By: /s/ Valerijs Vavilovs 2024-02-27