Md. Code, Labor and Employment § 4–107

(a) Documents and testimony obtained under this subtitle shall be kept in the offices of the Mediation Service.

(b) Information that the Commissioner, the Mediation Service, or a member of a board obtains under this subtitle is confidential, if the information:

(1) is of a personal nature;

(2) relates to the private business of a person; or

(3) may disclose the profits or methods for doing business of a person.