Wis. Stat. § 221.0517: Record date.

(1) Manner of fixing date. The bylaws may fix or provide the manner of fixing a future date as the record date for one or more voting groups in order to determine the shareholders entitled to notice of a shareholders’ meeting, to demand a special meeting, to vote or to take any other action. If the bylaws do not fix or provide for fixing a record date, the board of directors may fix a future date as the record date.

(2) Limit on date. A record date fixed under this section may not be more than 70 days before the meeting or action requiring a determination of shareholders.

(3) Effect of adjournment.

(a) Except as provided in par. (b), a determination of shareholders entitled to notice of or to vote at a shareholders’ meeting is effective for any adjournment of the meeting unless the board of directors fixes a new record date, which it shall do if the meeting is adjourned to a date more than 120 days after the date fixed for the original meeting.

(b) If a court orders a meeting adjourned to a date more than 120 days after the date fixed for the original meeting, it may provide that the original record date continues in effect or it may fix a new record date.