Cipher Mining Inc. (CIFR) Insider Trading -- Recent Executive & Director Transactions
17 insiders reported 517 Form 4 transactions for Cipher Mining Inc. (CIFR) over the past 18 months (most recent 2026-10-08). Recent activity: Kelly Patrick Arthur (Co-President and COO) Buy 33,967 shares, Iwaschuk William (Co-President and CLO) Sell 42,265 shares, Iwaschuk William (Co-President and CLO) Buy 33,967 shares, Mumford Gregory J.D. (Chief Financial Officer) Buy 17,109 shares, Kelly Patrick Arthur (Co-President and COO) Sell 17,341 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-10-08 | Kelly Patrick Arthur | Co-President and COO | Buy | 33,967 | $0 |
| 2026-10-08 | Iwaschuk William | Co-President and CLO | Sell | 42,265 | $669,055 |
| 2026-10-08 | Iwaschuk William | Co-President and CLO | Buy | 33,967 | $0 |
| 2026-10-08 | Mumford Gregory J.D. | Chief Financial Officer | Buy | 17,109 | $0 |
| 2026-10-08 | Kelly Patrick Arthur | Co-President and COO | Sell | 17,341 | $274,508 |
| 2026-10-08 | Page Tyler | Chief Executive Officer | Sell | 57,802 | $915,006 |
| 2026-10-08 | Iwaschuk William | Co-President and CLO | Sell | 18,784 | $297,351 |
| 2026-10-08 | Page Tyler | Chief Executive Officer | Buy | 113,225 | $0 |
| 2026-10-08 | Kelly Patrick Arthur | Co-President and COO | Buy | 29,611 | $0 |
| 2026-10-08 | Page Tyler | Chief Executive Officer | Buy | 105,285 | $0 |
| 2026-10-08 | Iwaschuk William | Co-President and CLO | Buy | 29,611 | $0 |
| 2026-10-08 | Kelly Patrick Arthur | Co-President and COO | Sell | 15,117 | $239,302 |
| 2026-10-08 | Page Tyler | Chief Executive Officer | Sell | 53,748 | $850,831 |
| 2026-10-08 | Iwaschuk William | Co-President and CLO | Sell | 16,375 | $259,216 |
| 2026-10-08 | Kelly Patrick Arthur | Co-President and COO | Buy | 76,427 | $0 |
| 2026-10-08 | Page Tyler | Chief Executive Officer | Buy | 254,756 | $0 |
| 2026-10-08 | Iwaschuk William | Co-President and CLO | Buy | 76,427 | $0 |
| 2026-10-08 | Kelly Patrick Arthur | Co-President and COO | Sell | 39,016 | $617,623 |
| 2026-10-08 | Page Tyler | Chief Executive Officer | Sell | 130,053 | $2.1M |
| 2026-10-08 | Mumford Gregory J.D. | Chief Financial Officer | Sell | 6,895 | $109,148 |
| 2026-10-07 | Bitfury Top HoldCo B.V. | 10% Owner | Sell | 1.8M | $0 |
| 2026-10-07 | Vavilovs Valerijs | 10% Owner | Sell | 1.8M | $0 |
| 2026-10-07 | V3 Holding Ltd | 10% Owner | Sell | 1.8M | $0 |
| 2026-10-07 | Bitfury Group Ltd | 10% Owner | Sell | 1.8M | $0 |
| 2026-10-02 | Kelly Patrick Arthur | Co-President and COO | Buy | 33,967 | $0 |
Source: SEC Form 4 filings · as of 2026-10-08