If a board of directors of a depository bank proposes to make a material change in the business plan, capital plan, or other factors considered by the commissioner in granting a charter to the depository bank within 3 years of its receipt of a certificate to engage in business under RSA 383-A:3-315, then the board of directors may not make the change unless it submits an application seeking approval of the change to the commissioner as provided in RSA 383-A:6-602 and it is permitted to do so by the commissioner. Notwithstanding the foregoing, the commissioner may extend the 3 year period by an additional 2 years for any depository bank subject to this section, if the commissioner determines such extension is necessary in the interest of safety and soundness.