Wisconsin Statutes Corporations (Ch. 180 to 188) § 181.1501. Authority to transact business required

(a) Maintaining, defending or settling any civil, criminal, administrative or investigatory proceeding.

(b) Holding meetings of the board or members or carrying on other activities concerning internal corporate affairs.

(c) Maintaining bank accounts.

(d) Maintaining offices or agencies for the transfer, exchange and registration of the foreign corporation's memberships or maintaining trustees or depositaries with respect to those memberships.

(e) Selling through independent contractors.

(f) Soliciting or obtaining orders, whether by mail or through employees or agents or otherwise, if the orders require acceptance outside this state before they become contracts.

(g) Creating or acquiring indebtedness, mortgages and security interests in property.

(h) Securing or collecting debts or enforcing mortgages and security interests in property securing the debts.

(i) Owning, without more, property.

(j) Conducting an isolated transaction that is completed within 30 days and that is not one in the course of repeated transactions of a like nature.

(k) Transacting business in interstate commerce.