BioAmber Inc. Announces Pricing of Initial Public Offering

MINNEAPOLIS, MN, May 9, 2013 /PRNewswire/ - BioAmber Inc. ("BioAmber") (NYSE: BIOAU), announced today the pricing of its initial public offering of 8,000,000 units consisting of one share of common stock and one warrant to purchase half of one share of common stock at $10 per unit, before underwriting discounts and commissions.  Each warrant will be exercisable at an exercise price of $11.00 per whole share of common stock.  All units are being sold by BioAmber.  BioAmber has granted the underwriters an option for 30 days to purchase up to an additional 1,200,000 units at the initial public offering price, less underwriting discounts and commissions, to cover over-allotments, if any.  The units are expected to start trading on the New York Stock Exchange ("NYSE") under the symbol "BIOAU" on May 10, 2013. The common stock and warrants comprising the units will begin trading separately on NYSE under the symbols "BIOA" and "BIOAWS", respectively, on the first trading day following the expiration of the underwriters' 30-day over-allotment option, at which time trading of the units will be suspended and the units will be delisted. BioAmber also intends to list its common stock on the Professional Segment of the regulated market of NYSE Euronext in Paris under the symbol "BIOA." This offering is expected to close on May 14, 2013.

Credit Suisse, Barclays and Société Générale are acting as joint book-running managers for the offering. Pacific Crest Securities is acting as co-manager for the offering.

A registration statement relating to these securities has been filed with, and declared effective by, the U.S. Securities and Exchange Commission on May 9, 2013.  This press release shall not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.

The offering of these securities is being made only by means of a prospectus, copies of which may be obtained from Credit Suisse Securities (USA) LLC  by mail at One Madison Avenue, New York, New York 10010, Attention: Prospectus Department, or by calling toll free (800) 221-1037, or by emailing [email protected].

About BioAmber Inc.

BioAmber is a next generation chemicals company. Its proprietary technology platform combines industrial biotechnology and chemical catalysis to convert renewable feedstocks into chemicals including succinic acid and 1,4-butanediol, which are used in a wide variety of everyday products such as plastics, food additives and personal care products. For more information visit the company's web site at: www.bio-amber.com.

Forward-Looking Statements

This press release contains forward-looking statements, which are subject to substantial risks, uncertainties and assumptions. You should not place reliance on these statements.  Forward-looking statements include information concerning the proposed offering. These statements often include words such as "believe," "expect," "anticipate," "intend," "plan," "estimate," "seek," "will," "may" or similar expressions. Although we believe that the expectations reflected in the forward-looking statements are reasonable, we cannot guarantee that we will effect an initial public offering. Accordingly, you should not place undue reliance on these forward-looking statements. All such statements speak only as of the date made, and we undertake no obligation to update or revise publicly any forward-looking statements, whether as a result of new information, future events or otherwise.

SOURCE BIOAMBER CANADA INC.