There is created a nonprofit unincorporated legal entity to be known as the Iowa insurance guaranty association. All insurers as defined in section 515B.2, subsection 5 shall be and remain members of the association as a condition of their authority to transact insurance in this state. The association shall perform its functions under a plan of operation established and approved pursuant to section 515B.6 and shall exercise its powers through a board of directors established under section 515B.4. Except as otherwise provided in such plan of operation, annual or special meetings of members of the association may be held on call as directed by the association’s board of directors or by the commissioner of insurance, upon not less than ten days’ written notice by ordinary mail to each member at the member’s principal office as shown by the records in the commissioner’s office, specifying the time and place, and in the case of a special meeting, the purpose of the meeting. Members may vote in person or by proxy and ten members present in person or by proxy shall constitute a quorum for the transaction of any business.