Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN 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 * Plank Kevin A 2. Issuer Name and Ticker or Trading Symbol Under Armour, Inc. [UA] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) __X__ Director __X__ 10% Owner __X__ Officer (give title below) _____ Other (specify below) President and CEO (Last) (First) (Middle) 101 PERFORMANCE DRIVE 3. Date of Earliest Transaction (Month/Day/Year) 08/26/2026 (Street) BALTIMORE, MD 21230 4. If Amendment, Date Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Class C Common Stock 08/26/2026 A 2,165,533(1) A $ 0 6,206,831 D Class C Common Stock 829,444 I KDP Holdings I LLC Class C Common Stock 11,250,000 I KDP Holdings III LLC Class C Common Stock 3,107,880 I Plank Family Trust Class C Common Stock 719,722 I KD Plank LLC Class C Common Stock 1,046,123 I KD Plank #2 LLC Class B Common Stock 24,260,624 I KDP Holdings I LLC Class B Common Stock 5,250,000 I KDP Holdings II LLC Class B Common Stock 3,135,976 I Plank Family Trust Class B Common Stock 739,650 I KD Plank LLC Class B Common Stock 1,063,750 I KD Plank #2 LLC Class A Common Stock 181,608 I KDP Holdings I LLC

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)

2. Conversion or Exercise Price of Derivative Security

3. Transaction Date (Month/Day/Year)

3A. Deemed Execution Date, if any (Month/Day/Year)

4. Transaction Code (Instr. 8)

5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)

6. Date Exercisable and Expiration Date (Month/Day/Year)

7. Title and Amount of Underlying Securities (Instr. 3 and 4)

8. Price of Derivative Security (Instr. 5)

9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)

10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)

11. Nature of Indirect Beneficial Ownership (Instr. 4)

Code

V

(A)

(D)

Date Exercisable

Expiration Date

Title

Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Plank Kevin A 101 PERFORMANCE DRIVE BALTIMORE, MD 21230	X	X	President and CEO

Signatures

/s/ Mehri F. Shadman, Attorney-in-Fact for Kevin A. Plank		08/28/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(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)	The 2,165,533 restricted stock units are subject to both performance and time vesting conditions. The performance vesting condition requires, prior to March 31, 2030, the passing of 60 consecutive trading days on the New York Stock Exchange on which the average of the closing trading price of the Company's Class C Common Stock equals or exceeds $5.77. If the performance vesting condition is satisfied prior to March 31, 2030, the restricted stock units are subject to time vesting. If the performance vesting condition is not satisfied prior to March 31, 2030, the 2,165,533 restricted stock units will be forfeited.

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