Wis. Stat. § 180.0746: Payment of expenses.

On termination of the derivative proceeding, the court may do any of the following:

(1) Notwithstanding s. 814.04 (1), order the domestic corporation or foreign corporation to pay the plaintiff’s reasonable expenses, including attorney fees, incurred in the derivative proceeding by the shareholder or beneficial owner who commenced or maintained the derivative proceeding if the court finds that the derivative proceeding has resulted in a substantial benefit to the domestic corporation or foreign corporation.

(2) Order the shareholder or beneficial owner who commenced or maintained the derivative proceeding to pay any defendant’s reasonable expenses, including attorney fees, notwithstanding s. 814.04 (1), incurred in defending the derivative proceeding if it finds that the derivative proceeding was commenced or maintained without reasonable cause or for an improper purpose.