Committee employee or employee means:
(1) Any current or former officer or employee of the Committee;
(2) Any other individual hired through contractual agreement by or on behalf of the Committee or who has performed or is performing services under such an agreement for the Committee; and
(3) Any individual who served or is serving in any consulting or advisory capacity to the Committee, whether formal or informal.
(4) Provided, that this definition does not include persons who are no longer employed by the Committee and who are retained or hired as expert witnesses or who agree to testify about general matters available to the public, or matters with which they had no specific involvement or responsibility during their employment with the Committee.