S.C. Code Ann. § 8-13-1130

In addition to the statement of economic interests required pursuant to Section 8-13-1110, a person required to file the statement shall further report to the appropriate supervisory office the name of any person he knows to be a lobbyist as defined in Section 2-17-10(13) or a lobbyist's principal as defined in Section 2-17-10(14) and knows that the lobbyist or lobbyist's principal has in the previous calendar year purchased from the filer, a member of the filer's immediate family, an individual with whom the filer is associated, or a business with which the filer is associated, goods or services in an amount in excess of two hundred dollars.