On 1 April 1996, the company's name was changed from PT Asuransi Insindo Taisho to PT Asuransi Mitsui Marine Indonesia, following the change of parent company's name from Taisho Marine and Fire Insurance Co., Ltd. to become Mitsui Marine and Fire Insurance Co., Ltd.

Since December 1990, as the paid-up capital was increased to IDR 15 billion, the share composition became 79.60% held by the Japanese party, with the remaining 20.40% by the Indonesian party.

Due to the changes in government regulations, in 1983 the composition of shares of the Company was altered to become 51% held by the Indonesian party and 49% by the Japanese party.

On 22 October 1975, PT Asuransi Insido Taisho with business license in general insurance industry No. Kep-588/MD/1987 on 2 February1987 was officially established as a joint venture company between Taisho Marine and Fire Insurance Co., Ltd., Japan (70% shares) and PT Maskapai Asuransi Indonesia (30% shares), with a statutory capital of IDR 750 million.