Okla. Stat. tit. 6, § 6-1705: Companies authorized to act as fiduciary

A. No company shall act as a fiduciary in this state except:

1. A state trust company;

2. A state bank;

3. A savings association organized under the laws of this state

and authorized to act as a fiduciary pursuant to state law;

4. A national bank having its principal office in this state

and authorized by the Comptroller of the Currency to act as a

fiduciary pursuant to 12 U.S.C., Section 92a;

5. A federally chartered savings association having its

principal office in this state and authorized by its federal

chartering authority to act as a fiduciary;

6. An out-of-state bank with a branch in this state established

or maintained pursuant to the laws of this state or a trust office

licensed by the Commissioner pursuant to this act;

7. An out-of-state trust company with a trust office licensed

by the Commissioner pursuant to this act; or

8. A foreign bank with a trust office licensed by the

Commissioner pursuant to this act.

B. No company shall engage in an unauthorized trust activity.