Each holding company and each subsidiary of a holding company, other than a savings bank, must file with the Commissioner reports required by the Commissioner. The reports must be made under oath and must be in the form and for the periods prescribed by the Commissioner. Each report must contain information concerning the operations of the holding company and its subsidiaries as the Commissioner may require. A holding company must file with the Commissioner copies of any filings, documents, statements, or reports required to be filed with the appropriate federal banking agency, unless such filing, document, statement, or report is publicly available.