Okla. Stat. tit. 6, § 1003

A. No trust company shall advertise to furnish to the public legal services pertaining to the execution of trusts set forth in Section 1001 of this Code, or to the issuance of securities. No trust company shall advertise to furnish or furnish to the public legal advice or practice or hold itself out as practicing law. B. Any trust company whose officers or agents solicit legal business shall be subject to a fine not to exceed One Thousand Dollars ($1,000.00).