Mumford Gregory J.D.
CIK: 0002090886
Primary company: Cipher Mining Inc. (CIFR)
Mumford Gregory J.D. is a corporate insider at Cipher Mining Inc. (CIFR) filing SEC Form 4 transactions. 13 transactions. Source: SEC EDGAR.
Companies
Transaction History
Source: SEC EDGAR Form 4 insider transaction filings.
Company | Type | Shares | Price | Value | Shares After | Date | SEC |
|---|---|---|---|---|---|---|---|
| Exercise | 125,000 | - | - | 403,981 | 10/14/2026 Filed: 10/14/2026 | Filing → | |
| Tax Payment | 67,768 | $9.94 | $674K | 87,653 | 10/14/2026 Filed: 10/14/2026 | Filing → | |
| Exercise | 125,000 | - | - | 155,421 | 10/14/2026 Filed: 10/14/2026 | Filing → | |
| Exercise | 17,109 | - | - | 528,981 | 9/30/2026 Filed: 9/30/2026 | Filing → | |
| Tax Payment | 6,895 | $15.83 | $109K | 30,421 | 9/30/2026 Filed: 9/30/2026 | Filing → | |
| Exercise | 17,109 | - | - | 37,316 | 9/30/2026 Filed: 9/30/2026 | Filing → | |
| Exercise | 17,109 | - | - | 528,981 | 9/30/2026 Filed: 9/30/2026 | Filing → | |
| Exercise | 17,109 | - | - | 37,316 | 9/30/2026 Filed: 9/30/2026 | Filing → | |
| Exercise | 17,108 | - | - | 563,198 | 3/31/2026 Filed: 3/31/2026 | Filing → | |
| Tax Payment | 7,114 | $12.87 | $92K | 9,994 | 3/31/2026 Filed: 3/31/2026 | Filing → | |
| Exercise | 17,108 | - | - | 17,108 | 3/31/2026 Filed: 3/31/2026 | Filing → | |
| Award | 205,306 | - | - | 580,306 | 2/25/2026 Filed: 2/25/2026 | Filing → | |
| Award | 375,000 | - | - | 375,000 | 10/14/2025 Filed: 10/16/2025 | Filing → |
Type
Exercise
Shares
125,000
Price
-
Value
-
Type
Tax Payment
Shares
67,768
Price
$9.94
Value
$674K
Type
Exercise
Shares
125,000
Price
-
Value
-
Type
Exercise
Shares
17,109
Price
-
Value
-
Type
Tax Payment
Shares
6,895
Price
$15.83
Value
$109K
Type
Exercise
Shares
17,109
Price
-
Value
-
Type
Exercise
Shares
17,109
Price
-
Value
-
Type
Exercise
Shares
17,109
Price
-
Value
-
Type
Exercise
Shares
17,108
Price
-
Value
-
Type
Tax Payment
Shares
7,114
Price
$12.87
Value
$92K
Type
Exercise
Shares
17,108
Price
-
Value
-
Type
Award
Shares
205,306
Price
-
Value
-
Type
Award
Shares
375,000
Price
-
Value
-
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