Change of the number of shares and votes in Karo Bio AB (publ)

STOCKHOLM, May 29, 2015 - Karo Bio AB (publ) today announced that the company’s
total number of shares as per May 29, 2015 amounts to 689,743,550 shares,
corresponding to an equal number of votes. The increase in the number of shares
and votes results from the recently completed acquisition of 100% of the shares
in Tanomed AB and the directed new share issue of 13,480,392 shares to the
shareholders in Tanomed AB.

For further information, please contact:
Henrik Palm, CFO, telephone +46 70 540 4014 or email henrik.palm@karobio.se

About Karo Bio
Karo Bio is a development company focused on broadening its operations to
include projects and products closer to market. Karo Bio has several projects
approaching clinical phase. Karo Bio is based in Huddinge, Sweden and is listed
on Nasdaq Stockholm.

Karo Bio publishes this information in accordance with the Swedish Securities
Markets Act and/or the Swedish Financial Instruments Trading Act. The
information was submitted for publication on May 29, 2015 at 8:30 CET.

This press release is also available on www.karobio.se and
www.newsroom.cision.com.