5.__Exemption.__A director is not liable under subsection 1 if that director sustains the burden of proof that:

A.__The damage complained of was the direct result of an action approved by the corporation's board of directors but against which the director had voted; or

B.__The damage complained of was the direct result of an action that was approved by the corporation prior to that director's becoming a member of the board.

6.__Contribution.__Any director against whom a claim is asserted under subsection 1 and who is held liable thereon is entitled to contributions from each of the other directors who are likewise liable or any other director who, if sued separately, would have been liable to make the same payment.

7.__Limitation of actions.__An action may not be maintained to enforce any liability under subsection 1 unless the action is brought by the later of:

A.__Two years after the discovery of the damage caused; and

B.__Six years after the cause of action against the corporation accrued.

8.__Liability of controlling persons.__A person who, by or through stock ownership, agency or otherwise, or who, pursuant to or in connection with an agreement or understanding with one or more other persons by or through stock ownership, agency or otherwise, controls any person liable under subsection 1, is also jointly and severally liable to the same extent as that controlled person to any person to whom the controlled person is liable, unless the controlling person had no knowledge of or reasonable grounds to believe in the existence of the facts by reason of which the liability of the controlled person is alleged to exist. For purposes of this subsection, "control" means the possession, direct or indirect, of the power to direct or cause the direction of the management and policies of a person, whether through the ownership of voting securities, by contract or otherwise.

9.__Affirmative defense.__It is an affirmative defense to any proceeding under this section that within 180 days after the service of the summons and complaint upon the defendant corporation, the defendant corporation remedied the allegations contained in the complaint.