Md. Code Ann., Corps. & Ass'ns § 11-205

The Commissioner by rule or order may require the filing of any prospectus, pamphlet, circular, form letter, advertisement, or other sales literature or advertising communication, whether communicated in hard copy, electronic means, or otherwise, addressed or intended for distribution to prospective investors, including clients or prospective clients of an investment adviser, unless the security or transaction is exempted by Subtitle 6 of this title or the security is a federal covered security or the transaction is with respect to a federal covered security.