X0206 3 2021-08-27 0 0001819989 Cipher Mining Inc. CIFR 0001884407 Bitfury Top HoldCo B.V. STRAWINSKYLAAN 3051 AMSTERDAM P7 1077 ZX NETHERLANDS 0 0 1 0 0001887845 V3 Holding Ltd 4TH FLOOR HARBOUR PLACE, 103 SOUTH CHURCH STREET, PO BOX 10240 GEORGE TOWN, GRAND CAYMAN E9 KY1-1002 CAYMAN ISLANDS 0 0 1 0 0001887853 Bitfury Holding B.V. STRAWINSKYLAAN 3051 AMSTERDAM P7 NL 1077 ZX NETHERLANDS 0 0 1 0 0001887811 Vavilovs Valerijis STRAWINSKYLAAN 3051 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 Common Stock 206000000 I See Footnote Bitfury Holding B.V. ("Bitfury Holding") is the record holder of 6,000,000 shares of Common Stock. Bitfury Top HoldCo B.V. ("Bitfury Top HoldCo") is the record holder of 200,000,000 shares of Common Stock and is the sole owner of Bitfury Holding. As a result, Bitfury Top HoldCo may be deemed to share beneficial ownership the shares of Common Stock held by Bitfury Holding. 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. BITFURY HOLDING B.V., By: /s/ Olegs Blinkovs 2021-10-26 BITFURY TOP HOLDCO B.V., By: /s/ Olegs Blinkovs 2021-10-26 BITFURY GROUP LIMITED, By: /s/ Valerijs Vavilovs 2021-10-26 V3 HOLDING LIMITED, By: /s/ Valerijs Vavilovs 2021-10-26 VALERIJS VAVILOVS, By: /s/ Valerijs Vavilovs 2021-10-26