Okla. Stat. tit. 36 § 4903
All surety companies which execute undertakings of bail shall keep any moneys collected from agents licensed pursuant to Section 1303 of Title 59 of the Oklahoma Statutes as buildup or reserve funds in segregated interest-bearing trust accounts within this state in an entity which is insured either by the Federal Deposit Insurance Corporation or the Federal Savings and Loan Insurance Corporation.
The interest-bearing trust accounts shall not be pledged or offered as collateral.
The moneys in the interest-bearing trust accounts shall be used to satisfy the unfulfilled obligations of the undertakings of bail written by the agents from whom the moneys have been collected and to otherwise satisfy the unfulfilled obligations which may be owing to the surety by such agents.
Okla. Stat. tit. 36, § 4903