Wisconsin Statutes Securities and Investment (Ch. 551 to 553) § 552.21. Civil liabilities

(1) Any offeror who purchases a security in connection with a take-over offer not in compliance with this chapter or by means of any untrue statement of a material fact or any omission to state a material fact necessary in order to make the statements made, in the light of the circumstances under which they were made, not misleading, is liable to the person selling the security to the offeror, who may sue either at law or in equity to recover the security, plus any income received by the purchaser on the security, upon tender of the consideration received, or for damages. Damages are the excess of either the value of the security on the date of purchase or its present value, whichever is greater, over the present value of the consideration received for the security. Tender requires only notice of willingness to pay the amount specified in exchange for the security. Any notice may be given by service as in civil actions or by certified mail to the last-known address of the person liable.

(2) Every person who directly or indirectly controls a person liable under sub. (1), every partner, principal executive officer or director of such person, every person occupying a similar status or performing similar functions, every employee of such person who materially aids in the act or transaction constituting the violation, and every broker-dealer or agent who materially aids in the act or transaction constituting the violation, is also liable jointly or severally with and to the same extent as such person, unless the person liable under this subsection proves that he or she did not know, and in the exercise of reasonable care could not have known, of the existence of the facts by reason of which the liability is alleged to exist. There is contribution as in cases of contract among the several persons so liable.

(3) No action may be maintained under this section unless commenced before the expiration of 3 years after the act or transaction constituting the violation, but the time specified for commencing such action shall be extended by reason of any fact and for the time specified in ss. 893.13 and 893.16 to 893.23.

(4) The rights and remedies under this chapter are in addition to any other rights or remedies that may exist at law or in equity.