(a) The board of directors of any bank shall hold regular meetings at such time as may be fixed by the bylaws, at least once every two months, and shall at all times be subject to call by the president or by any two members of the board. Notwithstanding contrary provision in the certificate of incorporation or bylaws of a bank, meetings of the board of directors may be called by the superintendent and held at any place he requires.
(b) The board of directors, at their first meeting after election, shall fix and prescribe the amount of bond that shall be required of each officer and employee of the bank, and shall not be less than the amount that may have been fixed or that may be hereafter fixed by the superintendent for officers and employees of banks of the class to which it belongs. They shall require bonds, either individual or in blanket form, from each and every officer and employee handling money, checks, securities or other valuable papers of the bank, such bond to be made by a bonding company authorized to make such bonds in this state to be approved by the board of directors and to be in such form as may be approved by the superintendent. The superintendent or the board of directors of the bank may require an increase of the amount of such bond or other additional bond and securities, when he or they deem it necessary for the better protection of the bank and its depositors. Directors, as such, shall not be required to give bond.