Tranche Update on Prochem S.A.'s Equity Buyback Plan announced on February 28, 2018.

Prochem SA is a Poland-based company engaged in the engineering and construction and environmental sectors. The Company provides such services as construction, including engineering and design, general contracting, project management, technical consulting, construction work, electrical installations and assembly services and rental of construction equipment; leas of office space; maintenance of installations and industrial plants, public buildings and facilities and housing estates; and technical consulting, development and implementation of new technology, integration of data processing systems. The Company operates several subsidiaries, including Elektromontaz Krakow SA, Teoma SA, Iryd Sp z oo, Prochem Inwestycje Sp z oo and Prochem-Zachod Sp z oo, among others.