4. a. Any information filed with the department pursuant to this act may be disclosed in accordance with P.L.1963, c.73 (C.47:1A-1 et seq.), except that confidential information shall not be disclosed by the department to any person other than employees and representatives of the department.
b. A carrier shall separately identify any confidential information filed with the department pursuant to this act. Any information that is not identified as confidential information shall be considered public information and subject to disclosure.
c. As used in this section, "confidential information" means information contained in an actuarial memorandum filed with the department pursuant to this act that has been certified by the actuary preparing the memorandum as confidential or proprietary information.