EXHIBIT 24
				POWER OF ATTORNEY

	Know all by these presents, that the undersigned hereby constitutes
and appoints each of Mehri F. Shadman and Kathleen I. Tatum, or either of
them signing singly, and with full power of substitution, the undersigned's
true and lawful attorney-in-fact to:

(1)  prepare, execute in the undersigned's name and on the undersigned's
behalf, and submit to the U.S. Securities and Exchange Commission (the "SEC")
a Form ID, including amendments thereto, and any other documents necessary
or appropriate to obtain codes and passwords enabling the undersigned
to make electronic filings with the SEC of reports required by Section
16(a) of the Securities Exchange Act of 1934 (the "Exchange Act"), Rule 144
under the Securities Act of 1933, as amended (the "Securities Act") or any
rule or regulation of the SEC;

(2)  execute for and on behalf of the undersigned, in the undersigned's
capacity as an officer and/or director of Under Armour, Inc. (the "Company"),
Forms 3, 4, and 5 (including any amendments thereto) in accordance with
Section 16(a) of the Exchange Act and the rules thereunder; and/or Forms
144 (including any amendments thereto) in accordance with Rule 144
under the Securities Act;

(3)  do and perform any and all acts for and on behalf of the undersigned
which may be necessary or desirable to complete and execute any such Form
3, 4, or 5 or Form 144 complete and execute any amendment or amendments
thereto, and timely file such form with the SEC and any stock exchange or
similar authority; and

(4)  take any other action of any type whatsoever in connection with
the foregoing which, in the opinion of such attorney in fact, may be
of benefit to, in the best interest of, or legally required by, the
undersigned, it being understood that the documents executed by such
attorney in fact on behalf of the undersigned pursuant to this Power
of Attorney shall be in such form and shall contain such terms and
conditions as such attorney in fact may approve in such
attorney in fact's discretion.

	The undersigned hereby grants to each such attorney in fact full
power and authority to do and perform any and every act and thing
whatsoever requisite, necessary, or proper to be done in the exercise
of any of the rights and powers herein granted, as fully to all intents
and purposes as the undersigned might or could do if personally
present, with full power of substitution or revocation, hereby ratifying
and confirming all that such attorney in fact, or such attorney in fact's
substitute or substitutes, shall lawfully do or cause to be done by virtue
of this power of attorney and the rights and powers herein granted.  The
undersigned acknowledges that the foregoing attorneys in fact, in serving
in such capacity at the request of the undersigned, are not assuming,
nor is the Company assuming, any of the undersigned's responsibilities
to comply with Section 16 of the Exhange Act or Rule 144 of the Securities
Act.

	This Power of Attorney shall remain in full force and effect
until the undersigned is no longer required to file Forms 3, 4, and 5 or
Forms 144 with respect to the undersigned's holdings of and transactions in
securities issued by the Company, unless earlier revoked by the
undersigned in a signed writing delivered to the foregoing attorneys in fact.

	IN WITNESS WHEREOF, the undersigned has caused this Power of
Attorney to be executed as of this 22nd day February, 2023.

		/s/ Stephanie Linnartz
		    Signature

                   Stephanie Linnartz
		     Print Name