Okla. Stat. tit. 6, § 6-1710: Authority to operate trust business

A state trust company or a state bank may:

1. Perform any act as a fiduciary;

2. Engage in any trust business; and

3. Exercise any incidental power that is necessary to enable it

to fully exercise, according to commonly accepted fiduciary customs

and usages, a power conferred in this act.