Initial Statement of Beneficial Ownership (Form 3)

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * WATSA V PREM ET AL 2. Date of Event Requiring Statement (Month/Day/Year) 12/22/2025 3. Issuer Name and Ticker or Trading Symbol Under Armour, Inc. [UA] (Last) (First) (Middle) 95 WELLINGTON STREET WEST, SUITE 800 4. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director __X__ 10% Owner _____ Officer (give title below) _____ Other (specify below) 5. If Amendment, Date Original Filed (Month/Day/Year) (Street) TORONTO, A6 A6 M5J 2N7 6. Individual or Joint/Group Filing (Check Applicable Line) ___ Form filed by One Reporting Person _X_ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Beneficially Owned

1.Title of Security (Instr. 4) 2. Amount of Securities Beneficially Owned (Instr. 4) 3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5) 4. Nature of Indirect Beneficial Ownership (Instr. 5) Class A Common Shares 19,307,536 I See Footnote(1) Class C Common Shares 3,244,309 I See Footnote(1)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.			SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
WATSA V PREM ET AL 95 WELLINGTON STREET WEST, SUITE 800 TORONTO, A6 A6 M5J 2N7		X
FAIRFAX FINANCIAL HOLDINGS LTD/ CAN 95 WELLINGTON STREET WEST, SUITE 800 TORONTO, A6 A6 M5J 2N7		X

Signatures

/s/ V. Prem Watsa		12/29/2025
**Signature of Reporting Person		Date
/s/ Peter Clarke, President and Chief Operating Officer, on behalf of Fairfax Financial Holdings Limited		12/29/2025
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 5(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	These securities are held by wholly-owned subsidiaries of Fairfax Financial Holdings Limited. Mr. Watsa is the Chief Executive Officer and controlling person of Fairfax Financial Holdings Limited through certain holding companies he controls, including The Second 810 Holdco Ltd, The Second 1109 Holdco Ltd, The Sixty Two Investment Company Limited and 12002574 Canada Inc. Each of the Reporting Persons disclaims beneficial ownership of the securities reported herein for purposes of Rule 16a-1(a) under the Exchange Act, except to the extent of its or his pecuniary interest therein, if any. This report shall not be deemed an admission that any of the Reporting Persons is a beneficial owner for the purpose of Section 16 of the Exchange Act, or for any other purpose.

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