205 ILCS 5/21.1
(a) On or after June 1, 1997, an out-of-state bank may merge with a State bank after executing and filing not less than 60 days before the proposed effective date of the merger an application therefor with the Commissioner and after also filing with the Commissioner a copy of its charter, articles of association or articles of incorporation, and all amendments thereto, duly authenticated by the proper officer of the state wherein it is chartered or incorporated and the last quarterly statement of condition filed by the out-of-state bank with the appropriate federal banking regulator. The Commissioner shall specify the form of the application which shall set forth, to the extent applicable, the same information required in an application by a foreign corporation pursuant to Section 13.15 of the Business Corporation Act of 1983. Subject to Sections 21.2 and 21.3 of this Act, receipt by the Commissioner of a copy of an application filed with and approved by the out-of-state bank's chartering authority authorizing the out-of-state bank to merge with a State bank shall satisfy the filing requirements of this subsection (a).
When the provisions of this Section have been complied with, the Commissioner shall issue a certificate of authority to merge. If the merger is not consummated within one year, the Commissioner may cancel the certificate of authority.
(Source: P.A. 89-208, eff. 9-29-95; 90-665, eff. 7-30-98.)