Jack Mallers - 08 Dec 2025 Form 4 Insider Report for Twenty One Capital, Inc. (XXI)

Role: Chief Executive Officer, Director
Signature: /s/ James Cong Hoan Nguyen, as Attorney-in-Fact
Issuer symbol: XXI
Transactions as of: 08 Dec 2025
Net transactions value: $0
Form type: 4
Filing time: 05 Jan 2026, 20:12:26 UTC
Previous filing: 08 Dec 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Mallers Jack	Chief Executive Officer, Director	TWENTY ONE CAPITAL, INC., 111 CONGRESS AVENUE, SUITE 500, AUSTIN	/s/ James Cong Hoan Nguyen, as Attorney-in-Fact	05 Jan 2026	0002091894

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	XXI	Stock Option (Right to Buy)	Award	$0	+6,089,634		$0.000000	6,089,634	08 Dec 2025	Class A common stock	6,089,634	$14.43	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The stock options vest as follows: (a) 20% of the stock options will vest on April 1, 2026, and (b) the remaining 80% of the stock options will vest quarterly in equal tranches over the subsequent four years.