POWER OF ATTORNEY

     Know all by these presents, that the undersigned hereby revokes
any prior powers of attorney insofar as they relate to the matters
described below with respect to the securities of Altaba Inc. and
constitutes and appoints each of Arthur Chong, DeAnn Work, or Alexi Wellman signing?singly, and with full power of substitution, as the
true and lawful?attorney-in-fact of the undersigned to:

     (1)? Execute for and on behalf of the undersigned Forms 3, 4, and 5
with respect to securities of Altaba Inc., in accordance with Section 16(a)
of the Securities Exchange Act of 1934, as amended and the rules thereunder
(the ?1934 Act?);

     (2)? Perform any and all acts for and on behalf of the undersigned
which may be necessary or desirable to complete the execution of any such
Form 3, 4, or 5 and the timely filing of such form with the United States
Securities and Exchange Commission and any other authority, including the
execution of an application for EDGAR codes on Form ID; and

     (3)? 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 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 his discretion.

     The undersigned hereby grants to each such attorney-in-fact full
power and authority to do and perform each and every act whatsoever
requisite, necessary and proper to be done in the exercise of any of the
rights and powers herein granted, as fully as the undersigned could do if
personally present, with full power of substitution or revocation, hereby
ratifying and confirming all that any of such attorneys-in-fact, or the
substitute or substitutes of any of such attorneys-in-fact, 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 any of the undersigned?s responsibilities
to comply with Section 16 of the 1934 Act.

     This Power of Attorney shall be effective as of the date written
below, and unless sooner revoked, shall terminate upon the fifth (5th)
anniversary of the date written below.

     IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney
to be executed as of August 15, 2017.

          Signature: /s/ Richard Kauffman
          Print Name: Richard L. Kauffman