Okla. Stat. tit. 6, § 6-1707: State trust institutions - Business locations

A. A state trust institution may act as a fiduciary or

otherwise engage in a trust business in this or any other state or

foreign country, subject to complying with applicable laws of such

state or foreign country, at an office established and maintained

pursuant to this act, at a branch or at any location other than an

office or branch.

B. A state trust institution may also conduct any activities at

any office outside this state that are permissible for a trust

institution chartered by the host state where the office is located,

except to the extent such activities are expressly prohibited by the

laws of this state or by any regulation or order of the Commissioner

applicable to the state trust institution. However, the

Commissioner may waive any such prohibition if the Commissioner

determines, by order or regulation, that the involvement of out-of-

state offices of state trust institutions in particular activities

would not threaten the safety or soundness of such state trust

institutions.