Summary
Latest filing:
Jack Mallers is Former Chief Executive Officer and Director, Director of Twenty One Capital, Inc. (XXI). 3 SEC Form 4 filings on record, most recently on 21 July 2026.
Recent Transactions
6Every recent SEC Form 4 transaction Jack Mallers has reported, most recent first.
Other Insiders Active in the Same Sector
No other insider has filed at Jack Mallers's companies, so these are insiders reporting open-market trades at other companies in the same sector.
- Kenneth Booth - $19.94M of CACC open-market activity in the last 12 months
- James Matthew Darden - $19.92M of GL open-market activity in the last 12 months
- Joseph Baratta - $19.85M of BX open-market activity in the last 12 months
- Shawn T. Carolan - $19.19M of CHYM open-market activity in the last 12 months
- AMERICAN INTERNATIONAL GROUP, INC. - $1.76B of CRBG open-market activity in the last 12 months
- SUMITOMO MITSUI FINANCIAL GROUP, INC. - $1.31B of JEF open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Jack Mallers?
Jack Mallers is a corporate insider, tracked as Former Chief Executive Officer and Director, Director of Twenty One Capital, Inc. (XXI). InsiderAlpha holds 3 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Jack Mallers submitted recently?
1 primary Form 4 filing in the last 90 days, covering 1 company.
Where can I see all of Jack Mallers's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
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