Okla. Stat. tit. 6, § 2009

The fiscal year of all credit unions shall end December thirty- first (31st). The annual meeting of each credit union shall be held at such time and at such place as its bylaws shall prescribe. Special meetings may be held in the manner indicated in the bylaws. No member shall be entitled to vote by proxy but a member other than a natural person may vote through an agent designated for that purpose. Irrespective of the number of shares held by any one member, no one member shall have more than one vote.