Okla. Stat. tit. 18, § 18-381.29: Voting by proxy

At any meeting of the members or stockholders of an association

or federal association voting may be in person or by proxy

appointing a person or group to cast the votes of the member or

stockholder, provided that no proxy shall be eligible to be voted at

any meeting unless such proxy shall have been filed with the

association at least five (5) days prior to the date of the meeting.

Unless otherwise specified in the proxy, every proxy shall continue

in force from year to year until revoked by a writing duly delivered

to the secretary or until superseded by a subsequent proxy.