Md. Code, Bus. Reg. § 16.5-201

(a) Except as provided in subsection (b) of this section, a person must have an appropriate license whenever the person acts as a licensed other tobacco products manufacturer, a licensed other tobacco products retailer, a licensed other tobacco products storage warehouse, a licensed other tobacco products wholesaler, or a licensed tobacconist in the State. (b) A person need not obtain an other tobacco products retailer license under this subtitle to act as a retailer at a vending stand operated under a trader’s license issued to Blind Industries and Services of Maryland. (c) A license to act as an other tobacco products retailer or a tobacconist is required for each place of business where a person acts as an other tobacco products retailer or a tobacconist. (d) (1) An other tobacco products manufacturer, or person connected with the business of an other tobacco products manufacturer or related by ownership, may not at the same time hold or have any financial interest in an other tobacco products wholesaler license or in any business of an other tobacco products wholesaler. (2) A person licensed as an other tobacco products wholesaler, or person connected with the business of a licensed other tobacco products wholesaler or related by ownership, may not at the same time hold or have any financial interest in an other tobacco products manufacturer license or in any business of an other tobacco products manufacturer.