17 insiders reported 459 Form 4 transactions for Cipher Mining Inc. (CIFR) over the past 18 months (most recent 2026-06-08). Recent activity: Bitfury Top HoldCo B.V. (Insider) Sell 977,578 shares, Vavilovs Valerijs (Insider) Sell 977,578 shares, V3 Holding Ltd (Insider) Sell 977,578 shares, Bitfury Holding B.V. (Insider) Sell 977,578 shares, Bitfury Group Ltd (Insider) Sell 977,578 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-06-08 | Bitfury Top HoldCo B.V. | Insider | Sell | 977,578 | $24.8M |
| 2026-06-08 | Vavilovs Valerijs | Insider | Sell | 977,578 | $24.8M |
| 2026-06-08 | V3 Holding Ltd | Insider | Sell | 977,578 | $24.8M |
| 2026-06-08 | Bitfury Holding B.V. | Insider | Sell | 977,578 | $24.8M |
| 2026-06-08 | Bitfury Group Ltd | Insider | Sell | 977,578 | $24.8M |
| 2026-06-08 | Bitfury Top HoldCo B.V. | Insider | Sell | 222,422 | $5.8M |
| 2026-06-08 | Vavilovs Valerijs | Insider | Sell | 222,422 | $5.8M |
| 2026-06-08 | V3 Holding Ltd | Insider | Sell | 222,422 | $5.8M |
| 2026-06-08 | Bitfury Holding B.V. | Insider | Sell | 222,422 | $5.8M |
| 2026-06-08 | Bitfury Group Ltd | Insider | Sell | 222,422 | $5.8M |
| 2026-06-05 | Flatley Robert | Director | Buy | 8,299 | $0 |
| 2026-06-05 | Williams Wesley Hastie | Director | Buy | 8,299 | $0 |
| 2026-06-05 | Newsome James E | Director | Buy | 8,299 | $0 |
| 2026-06-05 | Duda Thomas David | Director | Buy | 8,299 | $0 |
| 2026-06-05 | GROSSMAN CARY M | Director | Buy | 8,299 | $0 |
| 2026-06-05 | Long Caitlin | Director | Buy | 8,299 | $0 |
| 2026-05-22 | Williams Wesley Hastie | Director | Sell | 14,567 | $311,879 |
| 2026-05-14 | Kelly Patrick Arthur | Co-President and COO | Sell | 48,000 | $929,280 |
| 2026-05-14 | Page Tyler | Chief Executive Officer | Sell | 400,000 | $0 |
| 2026-05-08 | Williams Wesley Hastie | Director | Sell | 28,169 | $627,042 |
| 2026-05-08 | GROSSMAN CARY M | Director | Sell | 20,000 | $436,400 |
| 2026-04-07 | Mumford Gregory J.D. | Chief Financial Officer | Buy | 17,108 | $0 |
| 2026-04-07 | Mumford Gregory J.D. | Chief Financial Officer | Sell | 7,114 | $91,557 |
| 2026-04-02 | Iwaschuk William | Co-President and CLO | Buy | 33,968 | $0 |
| 2026-04-02 | Page Tyler | Chief Executive Officer | Buy | 113,225 | $0 |
Source: SEC Form 4 filings · as of 2026-06-08