Okla. Stat. tit. 60, § 60-175.64
Duties at inception of trusteeship
Duties at Inception of Trusteeship.
Within a reasonable time after accepting a trusteeship or
receiving trust assets, a trustee shall review the trust assets and
make and implement decisions concerning the retention and
disposition of assets, in order to bring the trust portfolio into
compliance with the purposes, terms, distribution requirements, and
other circumstances of the trust and with the requirements of the
Oklahoma Uniform Prudent Investor Act.