Wis. Stat. § 552.07: Filing of solicitation materials.

(1) Copies of all advertisements, circulars, letters or other materials published by the offeror or the target company, soliciting or requesting the acceptance or rejection of the take-over offer, shall be filed with the division and sent to the target company or offeror, respectively, not later than the time copies of such solicitation materials are first published or used or sent to security holders of the target company.

(2) Solicitation materials used in connection with a take-over offer shall not contain any false statement of a material fact or omit to state a material fact necessary to make the statements therein not misleading. The division may by rule or order prohibit the use of any solicitation materials deemed false or misleading.