Tranche Update on Optrontec Inc.'s Equity Buyback Plan announced on March 5, 2018.

OPTRONTEC Inc. is a Korea-based company engaged in the manufacture of glass-based optical devices. The Company’s products consist of filters for image sensors, which are applied in mobile phones and digital cameras; optical filters, which are applied in digital versatile discs (DVDs) players and Blue-ray players, game devices and others, as well as lens and modules, which are applied in digital cameras, digital camcorders, closed circuit television (CCTV) systems, black box cameras for automobiles and others. The Company distributes its products within domestic market and to overseas markets.