Ohio Rev. Code § 1103.19
When the signatures of two authorized representatives of a state bank are required, as for a certificate for an amendment of the state bank's articles of incorporation or amended articles of incorporation pursuant to section 1113.12, 1113.13, or 1114.11 of the Revised Code or for certification of a conversion pursuant to section 1115.01 of the Revised Code, a consolidation or merger pursuant to section 1115.11 of the Revised Code, or a transfer of assets and liabilities pursuant to section 1115.14 of the Revised Code, one of the authorized representatives signing shall be the chairperson of the board of directors, the president, or a vice-president, as determined by the board of directors. The other authorized representative signing shall be the secretary or an assistant secretary, as determined by the board of directors.
R.C. § 1103.19