POWER OF ATTORNEY

     Know all by these presents, that the undersigned hereby
constitutes and appoints David G. Andersen, Queena Han, or Ashley Otero with
full power of substitution, as the undersigned's true and lawful
attorney-in-fact to:

(1) execute for and on behalf of the undersigned, in the
undersigned's   capacity as an officer and/or director of XBiotech Inc. or any
successor thereto (the "Company"), Forms 3, 4, and 5 in accordance with Section
16(a) of the Securities Exchange Act of 1934 and the rules thereunder (the
"Exchange Act"), Form 144 in accordance with Rule 144 under the Securities Act
of 1933 ("Rule 144") and any other forms or reports, including, but not limited
to, a Form ID, that the undersigned may be required to file in connection with
the undersigned's ownership,   acquisition or disposition of securities of the
Company;

(2) 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, Form 144 or other form or report, complete and execute
any amendment or amendments thereto and timely file such form or report with
the Securities and Exchange Commission and any stock exchange or similar
authority; 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, 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 Exchange Act or
Rule 144.

     This Power of Attorney revokes any previous Power of Attorney
filed with the Company for the purposes set forth herein and shall remain in
full force and effect until the undersigned is no longer required to file Forms
3, 4 and 5 with respect to the undersigned's holdings of and transactions in
securities issued by the Company, unless expressly revoked before that time.


  IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 26th day of April 2016.


/s/ Scott
Whitehurst
-------------------------------------

Scott Whitehurst