4-Antibody Announces a Long-Term Collaboration With Boehringer Ingelheim for Therapeutic Antibodies

BASEL, Switzerland, March 16, 2010 - 4-Antibody AG today announces a major long-term collaboration with
Boehringer Ingelheim to discover and to develop fully human therapeutic
antibodies for a number of targets in various disease indications. 4-Antibody
will use its proprietary and unencumbered Hu-PAC(R) and Retrocyte Display(R)
technologies for the discovery and development of fully human antibodies
against novel targets nominated by Boehringer Ingelheim. 4-Antibody AG will
receive payments of up to EUR 177.5 million (CHF 266 million) including
upfront and milestone payments from Boehringer Ingelheim upon achievement of
certain clinical development milestones. Further financial details were not
disclosed.

Dr. Ulf Grawunder, co-founder and CSO of 4-Antibody AG, said "This is a
landmark agreement for 4-Antibody. We are delighted to commence a long-term
collaboration with Boehringer Ingelheim and to apply the strength of
4-Antibody's fully human antibody discovery and engineering platforms to
create valuable potential new drug candidates. Our unique and unencumbered
technology capabilities allow the efficient generation of novel or improved
fully human antibodies against any target class for our collaboration
partners and for our own clinical development pipeline."

About 4-Antibody AG

4-Antibody AG is a privately held Swiss Biotech company active
in the area of therapeutic antibody drug development. 4-Antibody AG has
developed a portfolio of powerful, proprietary antibody discovery and
engineering platforms, including the Hu-PAC(R) and the Retrocyte Display(R)
technologies. 4-Antibody AG owns four patent families related to therapeutic
antibody discovery platforms and products, including more than a dozen of
granted patents worldwide. The company has 40 employees working at its
headquarter in Basel, Switzerland, and its subsidiary in Jena, Germany.

    4-Antibody AG
    Schwarzwaldallee 215
    CH-4056 Basel, Switzerland
    Phone: +41-61-697-1351
    FAX:   +41-61-697-1350
    info@4-antibody.com
    www.4-antibody.com

4-Antibody AG, Schwarzwaldallee 215, CH-4056 Basel, Switzerland, Phone: +41-61-697-1351, FAX: +41-61-697-1350, info at 4-antibody.com