The forward-looking statements speak only as of the date hereof and, other than as required by applicable law, Sanofi and Ablynx do not undertake any obligation to update or revise any forward-looking information or statements. Additional Information for US Investors This communication is for informational purposes only and is neither a recommendation, an offer to purchase nor a solicitation of an offer to sell any Securities of Ablynx. Sanofi has filed a Tender Offer Statement on Schedule TO with the SEC and Ablynx has filed a Solicitation/Recommendation Statement on Schedule 14D-9 with the SEC. Holders of Securities are urged to carefully review the documents that were filed by Sanofi and Ablynx with the SEC because these documents will contain important information, including the terms and conditions of the tender offer.