Who owns GRT Grand?

Could you please elaborate on the ownership structure of GRT Grand? Who are the principal shareholders or entities that hold the reins of this company? Could you also mention any noteworthy individuals or institutions that might have a significant stake in GRT Grand? Additionally, is there any public information available regarding the ownership details of this company, and if so, where can it be accessed? I'm particularly interested in understanding the ownership structure and who exactly owns GRT Grand.