Wis. Stat. § 813.06
In proceedings under s. 767.225 the court or judge may, and in all other proceedings except proceedings under ss. 813.12 , 813.122 , 813.125 and 823.113 the court or judge shall, require a bond of the party seeking an injunction, with sureties, to the effect that he or she will pay to the party enjoined such damages, not exceeding an amount to be specified, as he or she may sustain by reason of the injunction if the court finally decides that the party was not entitled thereto. Copies of such bond, affidavit or other pleading shall be served upon the party enjoined and the officer serving the same shall, within 8 days after such service, file his or her return in the office of the clerk of the court.
Wis. Stat. § 813.06
An order of the trial court limiting the amount of annual compensation that the corporation could pay the individual defendants until further order was an injunction, and the trial court was required to demand a bond. Becker v. Becker, 66 Wis. 2d 731, 225 N.W.2d 884 (1975).