Okla. Admin. Code § 660:11-9-31
No offer or sale of any security registered under the Securities Act may be made unless concurrent with the initial solicitation or immediately thereafter there is furnished to the prospective purchaser, a prospectus, in such form and containing such information as may be required pursuant to the Securities Act or the rules and regulations promulgated thereunder or by order of the Administrator, which prospectus has been previously filed with and approved by the Administrator for use; provided, no prospectus shall be required in connection with offers or sales of securities or transactions exempted by Sections 1-201 through 1-203 of the Securities Act, except as may be specifically required by such Act or the rules and regulations promulgated thereunder or by order of the Administrator. In addition, after the effective date of the registration statement in the state of Oklahoma, all broker-dealers and agents effecting transactions in the securities registered under the Securities Act shall be required to deliver a prospectus prior to or concurrently with any transaction in said securities for the same time periods specified in Section 4(a)(3) of the 1933 Act and Rule 174 adopted by the SEC ( 17 CFR § 230.174 ) in its most currently amended form as of the date of the filing of the application. Nothing in this rule obviates the need for registrants to comply with the provisions of Section 1-501 of the Securities Act.
Okla. Admin. Code § 660:11-9-31