Mich. Comp. Laws § 451.2504

Sec. 504. (1) Subject to subsection (2), a rule or order under this act may require the filing of a prospectus, pamphlet, circular, form letter, advertisement, sales literature, or other advertising record relating to a security or investment advice addressed or intended for distribution to prospective investors, including clients or prospective clients of a person registered or required to be registered as an investment adviser under this act. (2) This section does not apply to sales and advertising literature specified in subsection (1) relating to a federal covered security, a federal covered investment adviser, or a security or transaction exempted by section 201, 202, or 203 except as required under section 201(g) or 202(1)(x).