Pregunta a Barahona Israel Rodrigo Abogado

Are you experienced in corporate law? I need to know if my brother has the legal right to make a loan against the family business and to buy out the other shareholders at a small price without prior consent. Also he has negotiated rents too low so they would later be raised after he owns the property. He refuses to disclose the bank account information.
Does he have the legal right to do this?