Ad-hoc announcement in accordance with Art. 15 WpHG: Change on the Supervisory Board

Berlin, 9 November 2015 – By letter of 9 November 2015, the Chairman of the Supervisory Board of PSI AG, Prof. Dr.-Ing. Rolf Windmöller, informed PSI AG that he is resigning from his position for medical reasons and will leave the Supervisory Board effective as of 31 December 2015.

PSI AG’s board deeply regrets this development, thanks Prof. Dr.-Ing. Rolf Windmöller for his many achievements and wishes him all the best for his future and his health.

The management of PSI AG will shortly file an application for the appointment of a successor for the remaining term of the retiring Chairman’s position with the competent court according to sec. 104 German Stock Corporation Act (Aktiengesetz).

On the basis of its own software products, PSI AG develops and integrates complete solutions for energy management (gas, oil, electricity, heat, energy trading), production management (mining, metals, automotive, mechanical engineering, logistics) and infrastructure management for transport and safety. PSI was founded in 1969 and em-ploys 1,700 persons worldwide.