(57)The establishment, by issuers or any person acting on their behalf or account, of lists of persons working for them under a contract of employment or otherwise and having access to inside information relating, directly or indirectly, to the issuer, is a valuable measure for protecting market integrity. Such lists may serve issuers or such persons to control the flow of inside information and thereby help manage their confidentiality duties. Moreover, such lists may also constitute a useful tool for competent authorities to identify any person who has access to inside information and the date on which they gained access. Access to inside information relating, directly or indirectly, to the issuer by persons included on such a list is without prejudice to the prohibitions laid down in this Regulation.