(1) After allocation to required reserves, the board of directors may, at the end of any dividend period duly established, declare a dividend to be paid on shares or share certificates from undivided earnings as the bylaws may provide. Dividends may be paid at various rates, or not paid at all, with due regard to the conditions that pertain to each class of share.
(2) Subject to the approval of the board of directors, accounts closed between dividend periods may be credited with dividends at the rate set by the board of directors.
(3) Extraordinary dividends must be calculated on a rational means determined by the board of directors. For purposes of this section, “extraordinary dividends” means all irregularly scheduled and declared dividends.