Okla. Stat. tit. 6, § 6-1409
Unlawful concealment of transactions
It shall be unlawful and deemed a Class D1 felony offense for an
officer, director, employee, attorney, or agent of a bank or trust
company to conceal or endeavor to conceal any transaction of the
bank or trust company from any officer, director or employee of the
bank or trust company or any official or employee of the department
to whom it should be properly disclosed.