Among Brunei Companies, National Insurance is unique in its ownership structure. It has approximately 164 shareholders of which 153 comprise of Brunei investors.

Of its B$8 million share capital, 70% is held by Brunei citizens or companies owned by Brunei nationals. The two largest local shareholders are Sumber Mulia Holdings Sdn Bhd (24%) and Baiduri Holdings Bhd (10%). The Allianz Global Corporate & Specialty SE own 25%, while Mitsui Sumitomo Insurance Co. Ltd., owns 5% of the company.