Form 4: Cipher Mining CFO Reports Stock Transaction
Insider Transaction (Form 4)
Gregory J.D. Mumford, Chief Financial Officer of Cipher Mining Inc., reported multiple transactions in common stock on October 14, 2026.
Summary
- Option exercise/conversion: acquired 125,000 Common Stock on October 14, 2026; holds 155,421 after (Direct).
- Tax/exercise-price withholding: disposed of 67,768 Common Stock at $9.94 ($673,614) on October 14, 2026; holds 87,653 after (Direct).
- Option exercise/conversion: disposed of 125,000 Restricted Stock Units on October 14, 2026; holds 403,981 after (Direct).
Sentiment
Score: 5
Explanation: StockSavvy.ai views this as routine: the reported changes are grants, option exercises, tax withholding or similar administrative transactions, which carry limited directional signal.
Insider Transactions
Gregory J.D. Mumford — Officer (Chief Financial Officer)
| Date | Transaction | Security | Shares | Price | Value | Held After |
|---|---|---|---|---|---|---|
| 2026-10-14 | Option exercise/conversion | Common Stock | 125,000 | — | — | 155,421 |
| 2026-10-14 | Tax/exercise-price withholding | Common Stock | 67,768 | $10 | $673.6K | 87,653 |
| 2026-10-14 | Option exercise/conversion | Restricted Stock Units | 125,000 | — | — | 403,981 |
Key Dates
| Date | Description |
|---|---|
| 2026-10-14 | Option exercise/conversion (125,000 shares) |
| 2026-10-14 | Tax/exercise-price withholding (67,768 shares) |
| 2026-10-14 | Option exercise/conversion (125,000 shares) |
Keywords
insider transaction, Form 4, CIFR, Cipher Digital Inc., neutral, Gregory J.D. Mumford
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