X0508 4 2023-11-09 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 PLACE, 103 S. CHURCH ST PO BOX 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 2023-11-09 4 S 0 10000000 2.95 D 191931387 I See Footnote 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 187,109,827 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. Valerijs Vavilovs is the sole owner of V3 Holding Limited ("V3"), which is the majority owner of Bitfury Group Limited ("BGL"). BGL is the sole owner of Bitfury Top HoldCo. 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. Stijn Ehren, Managing Director of Bitfury Top HoldCo B.V., By: /s/ Stijn Ehren 2023-11-09 Stijn Ehren, Managing Director of Bitfury Holding B.V., By: /s/ Stijn Ehren 2023-11-09 Valerijs Vavilovs, Director of Bitfury Group Limited, By: /s/ Valerijs Vavilovs 2023-11-09 Valerijs Vavilovs, Director of V3 Holding Limited, By: /s/ Valerijs Vavilovs 2023-11-09 Valerijs Vavilovs, By: /s/ Valerijs Vavilovs 2023-11-09