COMMERCE UNION BANK AND COMMERCE UNION BANCSHARES, INC. FIRST AMENDMENT TO EMPLOYEE STOCK OPTION AGREEMENT

Exhibit 10.12

COMMERCE UNION BANK AND COMMERCE UNION BANCSHARES, INC.

FIRST AMENDMENT TO EMPLOYEE STOCK OPTION AGREEMENT

THIS FIRST AMENDMENT to that certain Employee Incentive Stock Option Agreement (the “Agreement”) is made and entered into as of the date set forth below, by and among Commerce Union Bank (the “Bank”), Commerce Union Bancshares, Inc. (the “Company”), and the optionee whose name is set forth below (the “Optionee”).

WHEREAS, the Company and the Bank entered into that certain Agreement and Plan of Share Exchange (the “Share Exchange Agreement”), dated April 26, 2011, pursuant to which, as of June 6, 2012, the Company assumed all responsibilities and obligations of the Bank with respect to all outstanding Bank Stock Options, as defined in the Share Exchange Agreement; and

WHEREAS, the Company, the Bank, and the Optionee desire to amend the Agreement to further document the assumption of the obligations by the Company to the Optionee;

NOW, THEREFORE, in consideration of the promises and mutual covenants hereinafter set forth, the undersigned agree as follows:

IN WITNESS WHEREOF, the Company, the Bank, and the Optionee have duly executed this First Amendment to the Employee Incentive Stock Option Agreement, which shall be deemed effective as of the Effective Time of the Plan of Share Exchange.