Sec Form 4 Filing - Plank Kevin A @ Under Armour, Inc. - 2024-06-03

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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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) 1020 HULL STREET 3. Date of Earliest Transaction (MM/DD/YY) 06/03/2024 (Street) BALTIMORE, MD21230 4. If Amendment, Date Original Filed (MM/DD/YY) 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 (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 06/03/2024 A 2,123,894 ( 1 ) A $ 0 2,412,824 D Class C Common Stock ( 2 ) 625,204 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

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 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 1020 HULL STREET BALTIMORE, MD21230 X X President and CEO Signatures /s/ Mehri F. Shadman, Attorney-in-Fact for Kevin A. Plank 06/05/2024 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Includes 2,000,000 restricted stock units subject to both performance and time vesting conditions. The performance vesting condition requires, prior to March 31, 2028, 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 $13.00. If the performance vesting condition is satisfied prior to March 31, 2028, the restricted stock units are subject to time vesting. If the performance vesting condition is not satisfied prior to March 31, 2028, the 2,000,000 restricted stock units will be forfeited. ( 2 )Includes 73,297 shares of Class C Common Stock previously held directly, which were transferred to KDP Holdings I LLC on May 22, 2024 and are now owned indirectly.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

* 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).

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