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CIFR Insider Trading

Form 4 insider transactions for CIFR over the last 6 months. Buys, sells and grants by directors and officers.

InsiderDateTypeSharesPrice
Mumford Gregory J.D.Chief Financial OfficerOct 14, 2026Tax withholding67,768$9.94
Mumford Gregory J.D.Chief Financial OfficerOct 14, 2026Option exercise125,000—
Bitfury Group LtdOct 5, 2026J1,840,000$94.60
Vavilovs ValerijsOct 5, 2026J1,840,000$94.60
Bitfury Top HoldCo B.V.Oct 5, 2026J1,840,000$94.60
V3 Holding LtdOct 5, 2026J1,840,000$94.60
Page TylerChief Executive OfficerSep 30, 2026Tax withholding241,603$15.83
Page TylerChief Executive OfficerSep 30, 2026Option exercise946,532—
Iwaschuk WilliamCo-President and CLOSep 30, 2026Tax withholding77,424$15.83
Iwaschuk WilliamCo-President and CLOSep 30, 2026Option exercise280,010—
Mumford Gregory J.D.Chief Financial OfficerSep 30, 2026Tax withholding6,895$15.83
Mumford Gregory J.D.Chief Financial OfficerSep 30, 2026Option exercise34,218—
Kelly Patrick ArthurCo-President and COOSep 30, 2026Tax withholding71,474$15.83
Kelly Patrick ArthurCo-President and COOSep 30, 2026Option exercise280,010—
Bitfury Group LtdSep 28, 2026J1,805,000$100.00
Vavilovs ValerijsSep 28, 2026J1,805,000$100.00
Bitfury Holding B.V.Sep 28, 2026J1,805,000$100.00
Bitfury Top HoldCo B.V.Sep 28, 2026J1,805,000$100.00
V3 Holding LtdSep 28, 2026J1,805,000$100.00
Page TylerChief Executive OfficerJul 9, 2026Sell112,500$22.68
Page TylerChief Executive OfficerJul 8, 2026Sell112,500$21.19
Kelly Patrick ArthurCo-President and COOJun 30, 2026Tax withholding71,474$24.50
Kelly Patrick ArthurCo-President and COOJun 30, 2026Option exercise140,005—
Iwaschuk WilliamCo-President and CLOJun 30, 2026Tax withholding77,424$24.50
Iwaschuk WilliamCo-President and CLOJun 30, 2026Option exercise140,005—
Mumford Gregory J.D.Chief Financial OfficerJun 30, 2026Tax withholding6,895$24.50
Mumford Gregory J.D.Chief Financial OfficerJun 30, 2026Option exercise17,108—
Page TylerChief Executive OfficerJun 30, 2026Tax withholding241,603$24.50
Page TylerChief Executive OfficerJun 30, 2026Option exercise473,266—
Page TylerChief Executive OfficerJun 22, 2026Tax withholding724,520$28.14
Page TylerChief Executive OfficerJun 22, 2026Option exercise1,419,236—
GROSSMAN CARY MJun 18, 2026Sell15,000$29.43
Iwaschuk WilliamCo-President and CLOJun 16, 2026Tax withholding92,167$26.03
Kelly Patrick ArthurCo-President and COOJun 16, 2026Tax withholding85,084$26.03
Page TylerChief Executive OfficerJun 16, 2026Tax withholding170,168$26.03
Newsome James EJun 16, 2026Sell3,758$26.60
Iwaschuk WilliamCo-President and CLOJun 14, 2026Option exercise166,667—
Kelly Patrick ArthurCo-President and COOJun 14, 2026Option exercise166,667—
Page TylerChief Executive OfficerJun 14, 2026Option exercise333,334—
Bitfury Group LtdJun 4, 2026Sell1,200,000$25.49
Vavilovs ValerijsJun 4, 2026Sell1,200,000$25.49
Bitfury Holding B.V.Jun 4, 2026Sell1,200,000$25.49
Bitfury Top HoldCo B.V.Jun 4, 2026Sell1,200,000$25.49
V3 Holding LtdJun 4, 2026Sell1,200,000$25.49
Bitfury Group LtdJun 3, 2026Sell1,800,000$26.62
Vavilovs ValerijsJun 3, 2026Sell1,800,000$26.62
Bitfury Holding B.V.Jun 3, 2026Sell1,800,000$26.62
Bitfury Top HoldCo B.V.Jun 3, 2026Sell1,800,000$26.62
V3 Holding LtdJun 3, 2026Sell1,800,000$26.62
Williams Wesley HastieJun 3, 2026Grant / award8,299—
Newsome James EJun 3, 2026Grant / award8,299—
Long CaitlinJun 3, 2026Grant / award8,299—
GROSSMAN CARY MJun 3, 2026Grant / award8,299—
Flatley RobertJun 3, 2026Grant / award8,299—
Duda Thomas DavidJun 3, 2026Grant / award8,299—
Williams Wesley HastieMay 21, 2026Sell14,567$21.41
Kelly Patrick ArthurCo-President and COOMay 12, 2026Sell48,000$19.36
Page TylerChief Executive OfficerMay 12, 2026Gift400,000—
Newsome James EMay 11, 2026Sell3,342$20.96
GROSSMAN CARY MMay 6, 2026Sell20,000$21.82
Williams Wesley HastieMay 6, 2026Sell28,169$22.26

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Source: SEC EDGAR Form 4 filings.