X0306 4 2022-06-16 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 2022-06-16 4 J 0 1178440 1.89 D 201931387 I See Footnote Reflects the transfer by the reporting persons, through a series of direct and indirect distributions and transfers, of 1,178,440 shares of common stock, par value $0.001 per share, of Cipher Mining Inc. ("Common Stock"), initially held by Bitfury Holding B.V. ("Bitfury Holding"), to unaffiliated transferees, based on a price equal to $1.89 per share of Common Stock, in partial satisfaction of certain debt owed to such transferees. Bitfury Holding 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 197,109,827 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 of 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. Olegs Blinkovs, Managing Director of Bitfury Top HoldCo B.V., By: /s/ Olegs Blinkovs 2022-06-16 Olegs Blinkovs, Managing Director of Bitfury Holding B.V., By: /s/ Olegs Blinkovs 2022-06-16 Valerijs Vavilovs, Director of Bitfury Group Limited, By: /s/ Valerijs Vavilovs 2022-06-16 Valerijs Vavilovs, Director of V3 Holding Limited, By: /s/ Valerijs Vavilovs 2022-06-16 Valerijs Vavilovs, By: /s/ Valerijs Vavilovs 2022-06-16