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 September 30, 2026.
Summary
- Option exercise/conversion: acquired 17,109 Common Stock on September 30, 2026; holds 37,316 after (Direct).
- Option exercise/conversion: disposed of 17,109 Restricted Stock Units on September 30, 2026; holds 528,981 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 |
|---|---|---|---|---|---|---|
| 2026-09-30 | Option exercise/conversion | Common Stock | 17,109 | — | — | 37,316 |
| 2026-09-30 | Option exercise/conversion | Restricted Stock Units | 17,109 | — | — | 528,981 |
Key Dates
| Date | Description |
|---|---|
| 2026-09-30 | Option exercise/conversion (17,109 shares) |
| 2026-09-30 | Option exercise/conversion (17,109 shares) |
Keywords
insider transaction, Form 4, CIFR, Cipher Digital Inc., neutral, Gregory J.D. Mumford
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