Who is the owner of BMB group?

Can anyone shed some light on the ownership structure of the BMB group? I've been trying to do some research but haven't been able to find any definitive information on who the owner or owners are. Are they a privately held company or are there any public shareholders? Is there any information available on the background and experience of the individuals or entities behind the group? I'm particularly interested in understanding the leadership and vision driving the company's strategy and growth.