CIFR's three largest insider shareholders as of September 09, 2026 are Top Holdco B.V. Bitfury (TenPercentOwner, 93.38Mn shares), Holding Ltd V3 (TenPercentOwner, 58.32Mn shares), Tyler Page (Chief Executive Officer, 8.97Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Top Holdco B.V. Bitfury | TenPercentOwner | 0 | 93,378,292 | 93,378,292 | 55.8% | 16 Jul, 2025 |
| 2 | Holding Ltd V3 | TenPercentOwner | 0 | 58,316,694 | 58,316,694 | 34.8% | 08 Jun, 2026 |
| 3 | Tyler Page | Chief Executive Officer | 8,971,725 | 0 | 8,971,725 | 5.4% | 10 Jul, 2026 |
| 4 | Patrick Arthur Kelly | Co President And Coo | 1,601,970 | 0 | 1,601,970 | 1.0% | 02 Jul, 2026 |
| 5 | William Iwaschuk | Co President And Clo | 1,601,691 | 0 | 1,601,691 | 1.0% | 02 Jul, 2026 |
| 6 | Edward J Farrell | Chief Financial Officer | 1,482,622 | 0 | 1,482,622 | 0.9% | 02 Oct, 2025 |
| 7 | Robert R B Dykes | Director | 1,103,745 | 0 | 1,103,745 | 0.7% | 11 Sep, 2024 |
| 8 | Caitlin Long | Director | 235,080 | 0 | 235,080 | 0.1% | 05 Jun, 2026 |
| 9 | Holly Morrow Evans | Director | 195,512 | 0 | 195,512 | 0.1% | 28 Nov, 2025 |
| 10 | Robert Flatley | Director | 147,171 | 0 | 147,171 | 0.1% | 05 Jun, 2026 |
| 11 | Cary M Grossman | President And Cfo | 143,829 | 0 | 143,829 | 0.1% | 23 Jun, 2026 |
| 12 | James E Newsome | Director | 135,630 | 0 | 135,630 | 0.1% | 05 Jun, 2026 |
| 13 | Wesley Hastie Williams | Director | 123,708 | 0 | 123,708 | 0.1% | 05 Jun, 2026 |
| 14 | Thomas David Duda | Director | 25,979 | 0 | 25,979 | 0.0% | 05 Jun, 2026 |
| 15 | Gregory J.D. Mumford | Chief Financial Officer | 20,207 | 0 | 20,207 | 0.0% | 02 Jul, 2026 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 08 Jul, 2026 | Tyler Page | Chief Executive Officer | Disposed S | 112,500 | $21.19 | $2.38Mn | 9,084,225 | Direct |
| 09 Jul, 2026 | Tyler Page | Chief Executive Officer | Disposed S | 112,500 | $22.68 | $2.55Mn | 8,971,725 | Direct |
| 30 Jun, 2026 | Gregory J.D. Mumford | Chief Financial Officer | Acquired M | 17,108 | — | — | 27,102 | Direct |
| 30 Jun, 2026 | Patrick Arthur Kelly | Co President And Coo | Acquired M | 33,967 | — | — | 1,567,406 | Direct |
| 30 Jun, 2026 | William Iwaschuk | Co President And Clo | Acquired M | 33,967 | — | — | 1,573,077 | Direct |
| 30 Jun, 2026 | Tyler Page | Chief Executive Officer | Acquired M | 113,225 | — | — | 9,078,287 | Direct |
| 30 Jun, 2026 | Tyler Page | Chief Executive Officer | Disposed F | 57,802 | $24.50 | $1.42Mn | 9,020,485 | Direct |
| 30 Jun, 2026 | William Iwaschuk | Co President And Clo | Disposed F | 18,784 | $24.50 | $460.21K | 1,554,293 | Direct |
| 30 Jun, 2026 | Gregory J.D. Mumford | Chief Financial Officer | Disposed F | 6,895 | $24.50 | $168.93K | 20,207 | Direct |
| 30 Jun, 2026 | Patrick Arthur Kelly | Co President And Coo | Disposed F | 17,341 | $24.50 | $424.85K | 1,550,065 | Direct |
| 30 Jun, 2026 | Gregory J.D. Mumford | Chief Financial Officer | Disposed M | 17,108 | $0.00 | $0 | 546,090 | Direct |
| 30 Jun, 2026 | Patrick Arthur Kelly | Co President And Coo | Acquired M | 29,611 | — | — | 1,579,676 | Direct |
| 30 Jun, 2026 | William Iwaschuk | Co President And Clo | Acquired M | 29,611 | — | — | 1,583,904 | Direct |
| 30 Jun, 2026 | Tyler Page | Chief Executive Officer | Acquired M | 105,285 | — | — | 9,125,770 | Direct |
| 30 Jun, 2026 | William Iwaschuk | Co President And Clo | Disposed F | 16,375 | $24.50 | $401.19K | 1,567,529 | Direct |
| 30 Jun, 2026 | Patrick Arthur Kelly | Co President And Coo | Disposed F | 15,117 | $24.50 | $370.37K | 1,564,559 | Direct |
| 30 Jun, 2026 | Tyler Page | Chief Executive Officer | Disposed F | 53,748 | $24.50 | $1.32Mn | 9,072,022 | Direct |
| 30 Jun, 2026 | Tyler Page | Chief Executive Officer | Acquired M | 254,756 | — | — | 9,326,778 | Direct |
| 30 Jun, 2026 | Patrick Arthur Kelly | Co President And Coo | Acquired M | 76,427 | — | — | 1,640,986 | Direct |
| 30 Jun, 2026 | William Iwaschuk | Co President And Clo | Acquired M | 76,427 | — | — | 1,643,956 | Direct |