(1)    Except as provided in sub. (2), 5 or more adults, one of whom must be a resident, may form a cooperative by signing, acknowledging and filing articles.

   (2)   If the cooperative is formed for purposes of operating as a small winery cooperative wholesaler under s. 125.545, 3 or more individuals, at least one of whom must be a resident and all of which must be owners of small wineries certified by the department of revenue under s. 125.545 (6) (a), may form a cooperative by signing, acknowledging, and filing articles. Membership in a cooperative formed under this subsection is limited to small wineries certified by the department of revenue under s. 125.545 (6) (a).