A private banker of a major international bank is onboarding a new private investment company. The banker has verified the identity of the two directors, a husband and wife, who are equal shareholders. The funds in the account will be provided solely by the wife. The banker was later informed by the company that an additional director and shareholder will be added to the company although the new shareholder will not provide funds. What is the next step for due diligence in respect to the additional director and shareholder according to the Wolfsberg Anti-Money Laundering Principles for Private Banking?