Cipher Mining Inc. (CIFR) Insider Ownership

Historic Ownership Trends

Through the 90-day period concluding December 20, 2025, Cipher Mining's top three insider stakeholders include TenPercentOwner Holding Ltd V3 (61.32Mn shares), Chief Executive Officer Tyler Page (7.80Mn shares), Chief Financial Officer Edward J Farrell (1.48Mn shares).

Top Direct Holders

Insider ownership data is derived from the last 60 months of Form 4 SEC filings.
Holder Position Shares Report Date
Top Holdco B.V. Bitfury 93,378,292 16 Jul, 2025
Holding Ltd V3 61,316,694 16 Oct, 2025
Tyler Page Chief Executive Officer 7,802,551 17 Dec, 2025
Capital, Llc Glazer 1,806,406 09 Mar, 2021
Edward J Farrell Chief Financial Officer 1,482,622 02 Oct, 2025
Patrick Arthur Kelly Co President And COO 1,398,569 17 Dec, 2025
William Iwaschuk Co President And Clo 1,279,858 17 Dec, 2025
Robert R B Dykes 1,103,745 11 Sep, 2024
Caitlin Long 226,781 06 Jun, 2025
Wesley Hastie Williams 208,012 14 Nov, 2025
Cary M Grossman 200,530 28 Nov, 2025
Holly Morrow Evans 195,512 28 Nov, 2025
Douglas Clark Wurth 195,000 16 Apr, 2021
Fred S Zeidman CEO 195,000 16 Apr, 2021
James E Newsome 194,313 19 Aug, 2025
Robert Flatley 138,872 06 Jun, 2025
David I Pauker 47,500 16 Apr, 2021
John J Iii Lendrum 47,500 16 Apr, 2021
Tahira Rehmatullah 47,500 16 Apr, 2021
Paul Fratamico 47,500 16 Apr, 2021

* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.

Recent Insider Transactions

Detailed insider trading activity based on Form 4 SEC filings.
Download Data
Transaction Date Insider Name Security Class Transaction Type Shares Traded Price Shares Remaining Ownership Code
15 Dec, 2025 Patrick Arthur Kelly Common Stock D 35,569 $15.08 1,151,770 D S
15 Dec, 2025 Tyler Page Common Stock A 1,567,398 - 8,547,285 D M
15 Dec, 2025 William Iwaschuk Common Stock A 470,219 - 1,524,707 D M
15 Dec, 2025 Tyler Page Common Stock D 800,157 $14.74 7,747,128 D F
15 Dec, 2025 Patrick Arthur Kelly Common Stock A 470,219 - 1,621,989 D M
15 Dec, 2025 William Iwaschuk Common Stock D 260,032 $14.74 1,264,675 D F
15 Dec, 2025 Tyler Page Common Stock A 113,225 - 7,860,353 D M
15 Dec, 2025 Patrick Arthur Kelly Common Stock D 240,047 $14.74 1,381,942 D F
15 Dec, 2025 William Iwaschuk Common Stock A 33,968 - 1,298,643 D M
15 Dec, 2025 Patrick Arthur Kelly Common Stock A 33,968 - 1,415,910 D M
15 Dec, 2025 William Iwaschuk Common Stock D 18,785 $14.74 1,279,858 D F
15 Dec, 2025 Tyler Page Common Stock D 57,802 $14.74 7,802,551 D F
15 Dec, 2025 Patrick Arthur Kelly Common Stock D 17,341 $14.74 1,398,569 D F
26 Nov, 2025 Cary M Grossman Common Stock D 25,000 $19.00 200,530 D S
26 Nov, 2025 Holly Morrow Evans Common Stock D 15,000 $18.74 195,512 D S
17 Nov, 2025 Patrick Arthur Kelly Common Stock D 26,580 $14.20 1,187,339 D S
12 Nov, 2025 Wesley Hastie Williams Common Stock D 18,769 $17.51 208,012 D S
12 Nov, 2025 Holly Morrow Evans Common Stock D 16,269 $17.39 210,512 D S
09 Nov, 2025 Tyler Page Common Stock A 1,419,237 - 7,942,408 D M
10 Nov, 2025 Tyler Page Common Stock D 724,521 $19.65 7,217,887 D F