Okla. Stat. tit. 60, § 60-175.11: Trustee buying from, or selling to, self, affiliate,

etc.

No trustee shall directly or indirectly buy or sell any property

for the trust from or to itself or an affiliate; or from or to a

director, officer, or employee of such trustee or of an affiliate;

or from or to himself, a relative, employer, partner, or other

business associate; provided a national banking association or a

state bank and trust company performing trust functions, where

acting as executor, administrator, guardian, or trustee, may sell

stock of itself to one or more of its officers, stockholders, or

directors upon a court of competent jurisdiction finding that such

sale will be for the best interest of the trust estate and making an

order for such sale.