An intermediary who contracts to find, introduce, and bring together parties to a business opportunity, leaving ultimate negotiations and consummation of business transaction to the principals. With respect to a Securities issue, refers to one who brings together an issuer and an underwriter; in connection with mergers, refers to one who brings two companies together. May also refer to one who secures mortgage financing for a borrower, locates a particular type of executive or professional for a corporation, or locates a particular type of business acquisition for a corporation.