205 ILCS 10/3.1

The Commissioner may appoint a suitable person or persons to make an examination of the affairs of any company that directly or indirectly owns or controls 25% or more of the voting shares of a State bank. A person so appointed shall not be a stockholder or officer or employee of any company which such person may be directed to examine, and shall have the power to make a thorough examination into all of the affairs of the company and in so doing to examine any of the officers or agents or employees thereof on oath and shall make a full and detailed report of the condition of such company. Such person shall require a current list of the stockholders of the company including the number of shares of stock held by and the address of each stockholder, to be furnished at the time of examination or at any time upon request of the Commissioner.