Okla. Stat. tit. 6, § 6-2024: Joint tenancy shares and deposits

When shares are owned or a deposit is made in the joint names of

a member and one or more persons, payable to any of them or the

survivor, such shares or deposit, or any part thereof, or any

dividends or interest thereon, may be paid to any of the persons,

whether one of those persons shall be a minor or not, and whether

the other or others be living or not; and the receipt or acquittance

of the person so paid shall be a valid and sufficient release and

discharge to the credit union for any payment so made. The pledge

or hypothecation to the credit union of all or part of shares or

deposits so held in joint tenancy, signed by any joint tenant, shall

be a valid pledge of all or that part of the shares or deposit

pledged or hypothecated, and shall not operate to sever the joint

and survivorship status of the shares or deposit.