Cipher Mining Inc. SEC Filings

Cipher Mining Inc. Schedule 13D Amendment No. 15 updates beneficial ownership and recent open-market sales by related reporting persons. As of September 17, 2025, the filing reports ownership figures based on 393,282,654 shares outstanding: V3 Holding Ltd and related person Vavilovs Valerijs are shown with 79,442,259 shares (20.2%), Bitfury Top HoldCo B.V. and related entities are shown with up to 44,033,104 shares (11.2%), and Bitfury Holding B.V. holds 4,821,560 shares (1.2%). The amendment discloses recent open-market sales totaling 6,600,000 shares between September 8 and September 17, 2025, by Bitfury Top HoldCo and V3 at volume-weighted average prices ranging from $7.4788 to $11.7694 per share. The filing also attaches a joint filing agreement as an exhibit.

Cipher Mining insiders associated with Bitfury and Valerijs Vavilovs reported multiple open-market sales totaling 2,700,000 shares of Cipher Mining common stock across several transactions. The reported weighted-average sale prices ranged roughly from $10.80 to $12.37, and the filings show the reporting persons retain beneficial ownership of approximately 79.44 million to 81.24 million shares following each reported transaction, reflecting retained large positions held indirectly through a linked ownership structure.

The disclosures identify the reporting parties as V3 Holding Ltd, Bitfury Top HoldCo B.V., Bitfury Holding B.V., Bitfury Group Ltd and Valerijs Vavilovs and explain the ownership chain that links these entities and individuals, with statements disclaiming beneficial ownership except to the extent of pecuniary interest.

Cipher Mining Inc. insiders reported sales totaling 1,200,000 shares of Common Stock on September 8-9, 2025. The Form 4s were filed by related parties including V3 Holding Ltd, Bitfury Top HoldCo B.V., Bitfury Holding B.V., Bitfury Group Ltd and Valerijs Vavilovs. The three reported transactions show sales of 600,000 shares at a weighted average price of $7.4788, 419,837 shares at $8.3433 and 180,163 shares at $9.1560, with per-transaction price ranges disclosed in footnotes. Post-transaction beneficial ownership figures are shown as 85,442,259; 85,022,422; and 84,842,259 shares respectively. Footnotes describe the ownership chain among Bitfury entities, V3 and Mr. Vavilovs and include disclaimers of beneficial ownership except to the extent of pecuniary interest.

Cipher Mining Inc. Schedule 13D/A (Amendment No. 14) updates ownership and recent open-market sales by related reporting persons. As of September 8, 2025 the filing reports ownership based on 393,282,654 shares outstanding: V3 Holding Ltd and related parties are reported to beneficially own 86,042,259 shares (21.9%), Bitfury Top HoldCo B.V. and related entities are reported to beneficially own 48,533,104 shares (12.3%), and Bitfury Holding B.V. directly holds 4,821,560 shares (1.2%). The amendment discloses a series of open-market sales by V3 and Bitfury Top HoldCo totaling multiple millions of shares executed between August 26 and September 5, 2025, with volume-weighted average prices per disclosed tranche ranging from $6.6913 to $8.3014. A Joint Filing Agreement is filed as an exhibit.

Cipher Mining Inc. insiders disclosed sales totaling 1,300,000 shares of Common Stock across two days in September 2025. The Form 4 shows a sale of 700,000 shares on 09/04/2025 at a weighted average price of $7.5991 and a sale of 600,000 shares on 09/05/2025 at a weighted average price of $7.3799. After those transactions the reported beneficial ownership totals were 86,642,259 shares and 86,042,259 shares, respectively, held indirectly through affiliated entities. Reporting parties include V3 Holding Ltd, Bitfury Top HoldCo B.V., Bitfury Holding B.V., Bitfury Group Ltd and Valerijs Vavilovs, each identified as a director and 10% owner. Footnotes describe the ownership chain linking these entities and state that the reporting parties disclaim beneficial ownership except for pecuniary interests. The form is signed and dated 09/08/2025.

Cipher Mining Inc. (CIFR) reporting persons including V3 Holding Ltd, Bitfury Top HoldCo B.V., Bitfury Holding B.V., Bitfury Group Ltd and Valerijs Vavilovs disclosed sales of Common Stock on September 2 and September 3, 2025. The filings show 600,000 shares sold on 09/02/2025 at a weighted average price of $8.1335 (individual sale prices ranged $7.895–$8.34) and 600,000 shares sold on 09/03/2025 at a weighted average price of $8.3014 (individual sale prices ranged $8.02–$8.70). Beneficial ownership reported following the transactions was 87,942,259 shares after the first sale and 87,342,259 shares after the second sale, reported as indirect holdings through related entities. The filing explains the ownership chain among Vavilovs, V3, Bitfury Group, Bitfury Top HoldCo and Bitfury Holding B.V., and includes signatures dated 09/04/2025.

Cipher Mining insiders reported coordinated sales totaling 1,200,000 shares of Common Stock across three transactions on 08/28/2025 and 08/29/2025. The sales were reported with weighted-average prices of $7.1091, $7.4234 and $8.0528, and prices in the underlying transactions ranged from $7.0084 to $8.0923. After the trades, the aggregate beneficial ownership reported on this Form 4 decreased from 89,142,259 to 88,542,259 shares for the reporting group. The filing discloses the ownership chain: V3 directly holds 39,909,155 shares, Bitfury Top HoldCo holds 43,811,544 shares and Bitfury Holding B.V. holds 4,821,560 shares, with Valerijs Vavilovs as the ultimate owner of V3 and controlling interests.

Cipher Mining Inc. reporting persons disclosed insider sales totaling 1,200,000 shares of Common Stock across two days. On 08/26/2025 the reporting persons sold 700,000 shares at a weighted average price of $6.8107, and on 08/27/2025 they sold 500,000 shares at a weighted average price of $7.0726. After the transactions the filings show an indirect beneficial ownership of 90,242,259 shares following the first sale and 89,742,259 shares following the second sale. The Form 4 identifies a chain of ownership linking V3, Bitfury Top HoldCo, Bitfury Holding B.V., Bitfury Group Ltd and Valerijs Vavilovs, and includes a disclaimer that each disclaims beneficial ownership except to their pecuniary interest.

Cary M. Grossman, a director of Cipher Mining Inc. (issuer symbol CIFR), reported the sale of common stock on 08/18/2025. The Form 4 shows 75,000 shares were sold in multiple transactions at a weighted average price of $5.89 per share (transactions ranged $5.85–$5.935). After the reported disposals, the reporting person beneficially owns 225,530 shares, held directly. No derivative transactions are reported. The Form 4 was signed by an attorney-in-fact on 08/19/2025.