Wis. Stat. § 447.23: Dental society may limit indemnification.

(1) A dental society’s obligations to indemnify under s. 447.17 may be limited as follows:

(a) If the dental society is organized before June 13, 1987, except as provided in s. 447.12 (4), by an amendment to its articles, constitution or bylaws which becomes effective on or after June 13, 1987.

(b) If the dental society is organized on or after June 13, 1987, except as provided in s. 447.12 (4), by its articles, constitution or bylaws, including any amendments to its articles, constitution or bylaws.

(2) A limitation under sub. (1) applies if the first alleged act of a director or officer for which indemnification is sought occurred while the limitation was in effect.