805 ILCS 5/7.71
(b) An agreement created pursuant to this Section is ineffective against any shareholder not a party to the agreement unless:
(c) No agreement created pursuant to this Section shall be invalid as between the parties thereto, or shall subject employees, officers, directors or shareholders to personal liability for corporation liabilities, on the basis that the agreement:
(from Ch. 32, par. 7.71)
(Source: P.A. 86-1328.)