XBiotech Commences Tender Offer to Purchase up to $80,000,000 Worth of Its Shares - Seite 2

Computershare Trust Company, N.A. will serve as the depositary for the Offer and Georgeson LLC will serve as information agent for the Offer. Shareholders with questions, or who would like to receive additional copies of the Offer documents may call or email the information agent for the Offer at [phone] or [e-mail].

About XBiotech

XBiotech is a biosciences company dedicated to pioneering the discovery, development and commercialization of therapeutic antibodies based on its True Human^TM antibody proprietary technology. XBiotech is currently advancing a pipeline of antibody therapies to redefine the standards of care in oncology, inflammatory conditions, and infectious diseases. Headquartered in Austin, Texas, XBiotech is also leading the development of innovative biotech manufacturing technologies designed to more rapidly, cost-effectively and flexibly produce therapies urgently needed by patients worldwide. For more information, visit http://www.xbiotech.com.

Additional Information and Where to Find It

This communication is for informational purposes only. This communication is not a recommendation to buy or sell XBiotech common shares or any other securities, and it is neither an offer to purchase nor a solicitation of an offer to sell XBiotech common shares or any other securities. XBiotech has filed today a tender offer statement on Schedule TO, including an offer to purchase, letter of transmittal and related materials, with the United States Securities and Exchange Commission (the “SEC”). The Offer will only be made pursuant to the offer to purchase, letter of transmittal and related materials filed as a part of the Schedule TO, and the website established for purposes of effectuating the offer, in each case as amended from time to time. Shareholders should read carefully the offer to purchase, letter of transmittal and related materials, as filed and as may be amended from time to time, and the offer website, as may be amended from time to time, because they contain important information, including the various terms of, and conditions to, the Offer. Shareholders will be able to obtain a free copy of the tender offer statement on Schedule TO, the offer to purchase, letter of transmittal and other documents that XBiotech has filed or will be filing with the SEC at the SEC’s website at www.sec.gov or from XBiotech’s website at www.xbiotech.com. In addition, free copies of these documents may be obtained by contacting Georgeson LLC, the information agent for the Offer, at [phone] or [e-mail].