Wis. Stat. § 180.0741: Standing.

A shareholder or beneficial owner may not commence or maintain a derivative proceeding unless the shareholder or beneficial owner satisfies all of the following:

(1) Was a shareholder or beneficial owner of the corporation at the time of the act or omission complained of or became a shareholder or beneficial owner through transfer by operation of law from a person who was a shareholder or beneficial owner at that time.

(2) Fairly and adequately represents the interests of the corporation in enforcing the right of the corporation.