BioAmber announces public offering of common stock

July 15, 2014, Minneapolis, Minn. – BioAmber Inc. announced
that it has commenced a public offering of 2,800,000 shares of its common
stock.

BioAmber intends to use the net proceeds of the offering for
working capital and other general corporate purposes.

The underwriters will have a 30-day option from the date of
the offering to purchase up to an additional 420,000 shares of common stock
from BioAmber. 

Credit Suisse Securities (USA) LLC and Canaccord Genuity
Inc. are acting as the bookrunning managers for the offering.