Section 501.501 - Issuance and transfer of interests1. A cooperative may issue the number of interests of each class authorized by its articles. A cooperative may issue fractional interests. Interests may be represented by certificates or by entry on the cooperative's interest record books.2. A member shall not sell or otherwise transfer voting interests to any person. A member may be restricted or limited from selling or otherwise transferring any other class of interests of the cooperative as provided by the cooperative's articles of association or bylaws or an agreement executed between the cooperative and the member.3. A cooperative may acquire its own interests, and interests so acquired constitute authorized but unissued interests.