BioInvent Publishes Prospectus for the Rights Issue

Regulatory News:

This press release may not be published or distributed, directly or indirectly, in or into the United States, Canada, Hong Kong, Japan, South Africa, Australia or any other jurisdiction where such action is subject to legal restrictions.

The prospectus for BioInvent’s (STO:BINV) rights issue has been approved and registered by the Swedish Financial Supervisory Authority and is available for download on BioInvent’s website, www.bioinvent.com, and on Avanza’s website, www.avanza.se.

The prospectus, pre-printed share issue documentation and application form will be sent by post to the direct registered shareholders.

Prospectuses and application forms are available to order free of charge from Avanza by telephone +46 (0)8 562 251 22.

Financial and legal advisors Asperia AB is acting as financial advisor, Avanza is issuing agent and Mannheimer Swartling Advokatbyrå AB as legal advisor to BioInvent in connection with the rights issue.

To the editors: About BioInvent

BioInvent International AB is a research-based pharmaceutical company focused on the discovery and development of innovative antibody-based drugs against cancer.

The company has unique expertise in antibody drug development from initial concept to late clinical phase. The screening tool, F.I.R.S.T.TM, and the antibody library, n-CoDeR®, are two patented tools that enable identification of relevant human antibodies and disease targets during the discovery phase. BioInvent has also considerable experience in and a facility for process development and production of antibodies for clinical studies. The scope and strength of this platform is also used to develop antibody-based drugs in collaboration with partners who finance the development of the new drug, and provide BioInvent with the right to milestone payments and royalties on sales. These partners include Bayer Pharma, Daiichi Sankyo, Mitsubishi Tanabe Pharma, Servier and Xoma. More information is available at www.bioinvent.com.

BioInvent International AB (publ) Co. reg. No. 556537-7263 Visiting address: Sölvegatan 41 Mailing address: 223 70 LUND Phone: +46 (0)46 286 85 50 info@bioinvent.com www.bioinvent.com

Important information The information in this press release does not contain or constitute an offer to acquire, subscribe or otherwise trade in shares, subscription rights or other securities in BioInvent. Any invitation to the persons concerned to subscribe for shares in BioInvent will only be made through the prospectus, published on 24 April 2015.

This press release may not be published or distributed, directly or indirectly in or into the United States, Canada, Hong Kong, Japan, South Africa, Australia or any other jurisdiction where such action is wholly or partially subject to legal restrictions or where such action would require additional prospectuses, registrations or other actions in addition to what follows from Swedish law. Nor may the information in this press release be forwarded, reproduced or disclosed in such a manner that contravenes such restrictions or would require such requirements. Failure to comply with this instruction may result in a violation of applicable securities laws.

No subscription rights, BTAs (interim shares) or new shares will be registered under the United States Securities Act of 1933 ("Securities Act”) or securities legislation in any other state or other jurisdiction in the United States and may not be offered, subscribed, sold or transferred, directly or indirectly within the United States, other than pursuant to an exemption from the registration requirements of the Securities Act and in accordance with securities laws in relevant state or other jurisdiction in the United States.

This press release may contain forward-looking statements which reflect BioInvent's current view on future events and financial and operational development. Words such as "intend”, "expect”, "anticipate”, "may”, "believe”, "plan”, "estimate” and other expressions which imply indications or predictions of future development or trends, and which are not based on historical facts, are intended to identify forward-looking statements. Forward-looking statements inherently involve both known and unknown risks and uncertainties because they depend on future events and circumstances. Forward-looking statements do not guarantee future results or development and the real outcome could differ materially from the forward-looking statements.

Information disclosed in this press release is provided herein pursuant to the Swedish Securities Markets Act and/or the Swedish Financial Instruments Trading Act. The information was submitted for publication at 5.40 p.m. CET, on 24 April 2015.

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