ERYTECH Pharma S.A.

Declaration of Voting Results & Voting Rights Announcements • Jan 8, 2015

Information related to total number of voting rights and shares composing the share capital December 2014

Article 223-16 of general regulation of french Autorité des Marchés Financiers Lyon - France

Listing market : Euronext Paris from Euronext Market segment : segment C ISIN Code : FR0011471135 website : www.erytech.com

Date	Total of shares composing the share capital	Total of brut(1) voting rights	Total of net(2) voting rights
31 January 2014	5 558 952	8 470 542	8 448 032
28 February 2014	5 558 952	7 035 912	7 026 612
31 March 2014	5 566 572	7 042 532	7 033 522
30 April 2014	5 566 572	7 041 377	7 032 267
31 May 2014	5 566 572	7 034 699	7 025 954
30 June 2014	5 566 572	7 034 699	7 031 689
31 July 2014	5 566 572	7 032 332	7 027 892
31 August 2014	5 566 572	7 032 332	7 024 984
30 September 2014	5 584 272	7 040 814	7 040 564
31 October 2014	6 882 761	8 305 871	8 303 031
30 November 2014	6 882 761	8 291 271	8 286 771
31 December 2014	6 882 761	8 290 321	8 285 821

(1) Gross voting rights number (or « theoretical » voting rights) is used as a calculus base for the crossing of the threshold. In accordance with article 223-11 of general regulation of Autorité des Marchés Financiers, this number is calculated on the basis of all shares carrying the single and double voting rights, including shares without voting rights.

(2) Without treasury shares