PRESS RELEASE: BB Biotech AG completed its current share buyback program

BB BIOTECH AG / BB Biotech AG completed its current share buyback program . Processed and transmitted by Thomson Reuters ONE. The issuer is solely responsible for the content of this announcement.

On March 13, 2013, BB Biotech AG completed its current share buyback program which was initiated on March 19, 2012. During this period a total of 1 150 000 registered shares were bought back through the second trading line.

For further information:

Bellevue Asset Management AG, Seestrasse 16, 8700 Küsnacht, Switzerland Thomas Egger, Tel. +41 44 267 67 00, teg@bellevue.ch

www.bbbiotech.com

Company profile BB Biotech invests in companies in the fast growing market of biotechnology and is one of the world's largest investors in this sector with CHF 1.4 billion in assets under management. BB Biotech is listed in Switzerland, Germany and Italy. Its investments are focused on listed companies that are developing and commercializing novel medical treatments and cures. BB Biotech's investment selection process is guided by the fundamental research and analysis of physicians and molecular biologists. Its Board of Directors has many years of experience in industry and science.

Disclaimer This release contains forward-looking statements and expectations as well as assessments, beliefs and assumptions. Such statements are based on the current expectations of BB Biotech, its directors and officers, and are, therefore, subject to risks and uncertainties that may change over time. As actual developments may significantly differ, BB Biotech and its directors and officers accept no responsibility in that regard. All forward-looking statements included in this release are made only as of the date of this release and BB Biotech and its directors and officers assume no obligation to update any forward-looking statements as a result of new information, future events or other factors.

Media Release (PDF): http://hugin.info/130285/R/1685425/552145.pdf

This announcement is distributed by Thomson Reuters on behalf of Thomson Reuters clients. The owner of this announcement warrants that: (i) the releases contained herein are protected by copyright and other applicable laws; and (ii) they are solely responsible for the content, accuracy and originality of the information contained therein.

Source: BB BIOTECH AG via Thomson Reuters ONE [HUG#1685425]

--- End of Message ---

BB BIOTECH AG Vordergasse 3 Schaffhausen Switzerland

WKN: AONFN3;ISIN: CH0038389992;

(END) Dow Jones Newswires

   March 14, 2013 12:46 ET (16:46 GMT)- - 12 46 PM EDT 03-14-13