Mumford Gregory J.D.
SEC insider (Form 3/4/5 filer). CIK 0002090886. Chief Financial Officer at Cipher Digital Inc. (CIFR). 10 reported Form 4/5 transactions since Sep 2024; latest on Oct 14, 2026. Located in NEW YORK, NY.
Companies Mumford Gregory J.D. has filed insider reports for
- Cipher Digital Inc. (CIFR): Officer, Chief Financial Officer
Mumford Gregory J.D.
CIK: 0002090886
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Companies & Roles (1)
Cipher Digital Inc.
Discretionary Trading P&L
Holdings
Transaction History (10 total)
- Oct 14, 2026CIFR
Cipher Digital Inc.
Tax PaymentDirect67.8K shares at avg. $9.94$674K - Oct 14, 2026CIFR
Cipher Digital Inc.
ExerciseDirect125K shares- - Sep 30, 2026CIFR
Cipher Digital Inc.
ExerciseDirect17.1K shares- - Sep 30, 2026CIFR
Cipher Digital Inc.
Tax PaymentDirect6.9K shares at avg. $15.83$109K - Jun 30, 2026CIFR
Cipher Digital Inc.
ExerciseDirect17.1K shares- - Jun 30, 2026CIFR
Cipher Digital Inc.
Tax PaymentDirect6.9K shares at avg. $24.50$169K - Mar 31, 2026CIFR
Cipher Digital Inc.
Tax PaymentDirect7.1K shares at avg. $12.87$92K - Mar 31, 2026CIFR
Cipher Digital Inc.
ExerciseDirect17.1K shares- - Feb 25, 2026CIFR
Cipher Digital Inc.
AwardDirectRestricted Stock Units
205.3K shares- - Oct 14, 2025CIFR
Cipher Mining Inc.
AwardDirectRestricted Stock Units
375K shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Oct 14, 2026 | CIFR Cipher Digital Inc. | Tax Payment | 67,768 | $9.94 | $673,614 | Direct |
| Oct 14, 2026 | CIFR Cipher Digital Inc. | Exercise | 125,000 | - | $0 | Direct |
| Sep 30, 2026 | CIFR Cipher Digital Inc. | Exercise | 17,109 | - | $0 | Direct |
| Sep 30, 2026 | CIFR Cipher Digital Inc. | Tax Payment | 6,895 | $15.83 | $109,148 | Direct |
| Jun 30, 2026 | CIFR Cipher Digital Inc. | Exercise | 17,108 | - | $0 | Direct |
| Jun 30, 2026 | CIFR Cipher Digital Inc. | Tax Payment | 6,895 | $24.50 | $168,928 | Direct |
| Mar 31, 2026 | CIFR Cipher Digital Inc. | Tax Payment | 7,114 | $12.87 | $91,557 | Direct |
| Mar 31, 2026 | CIFR Cipher Digital Inc. | Exercise | 17,108 | - | $0 | Direct |
| Feb 25, 2026 | CIFR Cipher Digital Inc. | Award Restricted Stock Units | 205,306 | - | - | Direct |
| Oct 14, 2025 | CIFR Cipher Mining Inc. | Award Restricted Stock Units | 375,000 | - | - | Direct |
1-10 of 10 transactions