Djuro's shares closed 12.83% higher at 29.91 kuna.
Croatia's biggest telecommunications operator Hrvatski Telekom [ZSE:HT] generated the highest trading turnover of 1.9 million kuna. The company's share price edged down 0.02% and closed at 180.11 kuna.
Power transmission equipment maker Dalekovod [ZSE:DLKV] paced the blue-chip decliners as its share price fell 3.57% to 21.07 kuna.
The bourse's total trading turnover increased to 4.6 million kuna ($732,000/620,200 euro) on Thursday from 3.5 million kuna on Wednesday.
The 25-share benchmark CROBEX index of the ZSE increased 0.20% to 1,903.47 points, after dropping 0.10% on Wednesday.
The narrower of the bourse's two blue-chip indices, the CROBEX10, which tracks the leading companies in terms of free float, market capitalisation and liquidity, gained 0.15% to 1,125.48 points after adding 0.14% in the previous trading session.
The fixed-income CROBIS index closed up 0.06% at 110.5398 points.
(1 euro=7.41710 kuna)