PERSONS RESPONSIBLE 1 1.1 1.3 NAME AND POSITION OF THE PERSON NAME AND POSITION OF THE PERSON RESPONSIBLE FOR THE REGISTRATION RESPONSIBLE FOR FINANCIAL INFORMATION DOCUMENT Thomas Gidoin, Bernard Gilly, Chief Executive Officer of GenSight Biologics S.A. Chief Financial Officer of GenSight Biologics S.A. 74, rue du Faubourg Saint-Antoine – 75012 Paris, France Tel.: +33 (0)1 76 21 72 20 1.2 CERTIFICATION OF THE PERSON RESPONSIBLE FOR THE REGISTRATION DOCUMENT I hereby certify, having taken al l reasonable measures to this effect, that the information contained in this Registration Document is, to the best of my knowledge, in accordance with the facts and contains no omission likely to affect our import. I certify that, to the best of my knowledge, the consolidated financial statements were prepared in accordance with applicable accounting standards and that they give a fair view of the assets, financial position and results of the Company. I further certify that the management report contained in this Registration Document, as mentioned in the concordance table of this Registration Document, provides a faithful representation of the development of the business, results and financial position of the Company, as well as a description of the principal risks and uncertainties it faces. I have obtained from the statutory auditors a letter of completion of their work (lettre de fin de travaux) in which they state that they have verified the information relating to the financial situation and accounts presented in this Registration Document, and have read the Registration Document in its entirety. April 27, 2018 Bernard Gilly, Chief Executive Officer of GenSight Biologics S.A. 10 – GENSIGHT BIOLOGICS – 2017 Registration Document