Cipher Mining Inc
Ownership
Ownership Structure
Who owns Cipher Mining Inc (CIFR)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 77.9% of the shares are freely tradable; institutional investors hold 81.2%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| V3 Holding Ltd. | 14.05 | 58,316,694 | -4.9 | 06/30/2026 |
| BlackRock Inc | 7.33 | 30,414,668 | +6.9 | 06/30/2026 |
| Vanguard Portfolio Management, LLC | 5.81 | 24,124,026 | +8.1 | 06/30/2026 |
| Vanguard Capital Management, LLC | 3.97 | 16,494,048 | +2.1 | 06/30/2026 |
| Jane Street Group LLC | 3.72 | 15,434,258 | +35.0 | 06/30/2026 |
| D. E. Shaw & Co LP | 3.50 | 14,507,309 | -11.5 | 06/30/2026 |
| Morgan Stanley - Brokerage Accounts | 2.87 | 11,929,222 | +233.0 | 06/30/2026 |
| Value Aligned Research Advisors LLC | 2.68 | 11,125,393 | +1.1 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 2.99 | 12,406,170 | +0.3 | 09/30/2026 |
| Vanguard Small Cap Index | 2.14 | 8,870,385 | -0.8 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| V3 Holding Ltd | 10% Owner | 107,538,388 | 742,014,877 $ | Oct 5, 2026 | both |
| Page Tyler | Chief Executive Officer | 9,444,991 | 65,170,438 $ | Sep 30, 2026 | direct |
| Kelly Patrick Arthur | Co-President and COO | 1,741,975 | 12,019,628 $ | Sep 30, 2026 | direct |
| Iwaschuk William | Co-President and CLO | 1,741,696 | 12,017,702 $ | Sep 30, 2026 | direct |
| Mumford Gregory J.D. | Chief Financial Officer | 87,653 | 604,806 $ | Oct 14, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Oct 26, 2026 | V3 Holding Ltd | 10% Owner | Other | 1,805,000 | – | – |
| Oct 14, 2026 | Mumford Gregory J.D. | Chief Financial Officer | Other | 67,768 | 9.94 | 673,614 |
| Oct 14, 2026 | Mumford Gregory J.D. | Chief Financial Officer | Other | 125,000 | – | – |
| Oct 5, 2026 | V3 Holding Ltd | 10% Owner | Other | 1,840,000 | – | – |
| Sep 30, 2026 | Mumford Gregory J.D. | Chief Financial Officer | Other | 17,109 | – | – |
| Sep 30, 2026 | Iwaschuk William | Co-President and CLO | Other | 76,427 | – | – |
| Sep 30, 2026 | Iwaschuk William | Co-President and CLO | Other | 29,611 | – | – |
| Sep 30, 2026 | Iwaschuk William | Co-President and CLO | Other | 33,967 | – | – |
| Sep 30, 2026 | Page Tyler | Chief Executive Officer | Other | 254,756 | – | – |
| Sep 30, 2026 | Page Tyler | Chief Executive Officer | Other | 105,285 | – | – |
| Sep 30, 2026 | Page Tyler | Chief Executive Officer | Other | 113,225 | – | – |
| Sep 30, 2026 | Kelly Patrick Arthur | Co-President and COO | Other | 76,427 | – | – |
| Sep 30, 2026 | Kelly Patrick Arthur | Co-President and COO | Other | 29,611 | – | – |
| Sep 30, 2026 | Kelly Patrick Arthur | Co-President and COO | Other | 33,967 | – | – |
| Sep 28, 2026 | V3 Holding Ltd | 10% Owner | Other | 1,805,000 | – | – |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: November 2, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.