Tex. Fin. Code § 185.0001

This subchapter applies to a subsidiary of a state trust company, a present or former officer, director, manager, managing participant, or employee of a subsidiary, or a controlling shareholder or other person participating in the affairs of a subsidiary in the same manner as the subchapter applies to a state trust company, a present or former officer, director, manager, managing participant, or employee of a state trust company, or a controlling shareholder or other person participating in the affairs of a state trust company.