Okla. Stat. tit. 6 § 2020
Any money deposited to a member's account which has not matured to at least an amount equal to the par value of shares as established by the credit union's certificate of incorporation within a three-year period may be transferred to a Special Reserve for Dormant Accounts if the owner of such an account, after reasonable effort, cannot be located, and thereafter, no dividends or interest will accrue to these accounts. Any money so transferred shall be subject to a service charge to be set by the State Credit Union Board. If, however, the member at a later date requests a withdrawal of these funds, the money less any applicable service charge will be transferred out of the Special Reserve for Dormant Accounts, and the request for withdrawal be honored.
Okla. Stat. tit. 6, § 2020