X0609 4 2026-06-02 0001819989 Cipher Digital Inc. CIFR 0001887845 V3 Holding Ltd true 4TH FL HARBOUR PL 103 S CHURCH ST, 10240 GRAND CAYMAN E9 KY1-1002 CAYMAN ISLANDS 0 0 1 0 0001884407 Bitfury Top HoldCo B.V. true CONCERTGEBOUWPLEIN 15-H AMSTERDAM P7 1071 LL NETHERLANDS 0 0 1 0 0001887853 Bitfury Holding B.V. true CONCERTGEBOUWPLEIN 15-H AMSTERDAM P7 1071 LL NETHERLANDS 0 0 1 0 0001887811 Vavilovs Valerijs true 2102 CHEDDAR CHEESE TOWER, PO BOX 712650 DUBAI C0 UNITED ARAB EMIRATES 0 0 1 0 0001887872 Bitfury Group Ltd true FIELDFISHER RIVERBANK HOUSE, 2 SWAN LANE LONDON X0 EC4R 3TT UNITED KINGDOM 0 0 1 0 0 Common Stock 2026-06-03 4 S 0 1146445 26.28 D 60170249 I See Footnote Common Stock 2026-06-03 4 S 0 624715 27.17 D 59545534 I See Footnote Common Stock 2026-06-03 4 S 0 28840 28.10 D 59516694 I See Footnote Forward sale contract (obligation to sell) 2026-06-02 4 J 0 2000000 A Common Stock 2000000 2000000 I See Footnote The price reported in Column 4 represents a weighted average sales price of $26.2779. These shares were sold in multiple transactions at prices ranging from $25.8199 to $26.8196, inclusive. The reporting persons undertake to provide to Cipher Digital Inc., any security holder of Cipher Digital 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 through 3 of this Form 4. The price reported in Column 4 represents a weighted average sales price of $27.1708. These shares were sold in multiple transactions at prices ranging from $26.82 to $27.816, inclusive. The price reported in Column 4 represents a weighted average sales price of $28.09. These shares were sold in multiple transactions at prices ranging from $27.8226 to $28.2501, inclusive. 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 23,821,822 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 30,873,312 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] [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. On June 2, 2026, Bitfury Top HoldCo entered into a variable prepaid forward sale contract (the "Bitfury Forward Contract") with an unaffiliated third-party dealer (the "Dealer") covering a maximum of 2,000,000 shares of Common Stock. The Bitfury Forward Contract obligates Bitfury Top HoldCo to deliver to the Dealer up to 500,000 shares of Common Stock in each of four tranches within one business day after each of the four maturity dates of the Bitfury Forward Contract (May 14, 2027, May 21, 2027, May 28, 2027 and June 4, 2027)), for an aggregate amount of up to 2,000,000 shares. In exchange for assuming this obligation, Bitfury Top HoldCo received a cash payment of $41.9 million in connection with the entry into the Bitfury Forward Contract. The reporting person pledged 2,000,000 shares of Common Stock (the "Pledged Shares") to secure its obligations under the Bitfury Forward Contract. [Continued] [Cont.] The number of shares of Common Stock to be delivered to the Dealer on each of the four maturity dates is to be determined as follows: (a) if the daily volume-weighted average price of Common Stock during the trading day immediately preceding the maturity date (the "Settlement Price") is less than or equal to $24.8655 (the "Floor Price"), the reporting person will deliver to the Dealer 500,000 shares; (b) if the Settlement Price is between the Floor Price and $37.2982 (the "Cap Price"), the reporting person will deliver to the Dealer a number of shares of Common Stock having a value (based on the then market price) equal to $12.4 million; and (c) if the Settlement Price is greater than the Cap Price, the reporting person will deliver to the Dealer a number of shares of Common Stock equal to 500,000 shares minus a number of shares of Common Stock having a value (based on the then market price) equal to $6.2 million. [Continued] [Cont.] Bitfury Top HoldCo will retain economic and voting rights in the Pledged Shares during the term of the pledge (so long as no event of default or similar event occurs under the Forward Contract or the related pledge agreement). The Form 4 filed by the Reporting Persons on May 18, 2026 (the "Prior Form 4") is amended as follows: The reference to "$21.8 million" in clause (b) of footnote 6 of the Prior Form is hereby changed to "$16.1 million" and the reference to "$10.9 million" in clause (c) of footnote 6 of the prior Form 4 is hereby changed to "$8.1 million." Stijn Ehren, Managing Director of Bitfury Top HoldCo B.V., By: /s/ Stijn Ehren 2026-06-04 Stijn Ehren, Managing Director of Bitfury Holding B.V., By: /s/ Stijn Ehren 2026-06-04 Valerijs Vavilovs, Director of Bitfury Group Limited, By: /s/ Valerijs Vavilovs 2026-06-04 Valerijs Vavilovs, Director of V3 Holding Limited, By: /s/ Valerijs Vavilovs 2026-06-04 Valerijs Vavilovs, By: /s/ Valerijs Vavilovs 2026-06-04