20 ILCS 3501/810-35
Any documentary materials or data made or received by any member, agent or employee of the Authority, to the extent that such material or data consist of trade secrets, commercial or financial information regarding the operation of any enterprise conducted by an applicant for, or recipient of, any form of assistance which the Authority is empowered to render, or regarding the competitive position of such enterprise in a particular field of endeavor, shall not be deemed public records; provided, however, that if the Authority purchases a qualified security from such enterprise, the commercial and financial information, excluding trade secrets, shall be deemed to become a public record of the Authority after the expiration of 3 years from the date of purchase of such qualified security, or, in the case of such information made or received by any member, agent or employee of the Authority after the purchase of such qualified security, 3 years from the date such information was made or received. Any discussion or consideration of such trade secrets or commercial or financial information may be held by the Authority, in executive sessions closed to the public, notwithstanding the provisions of the Open Meetings Act; provided, however, that the purpose of any such executive session shall be set forth in the official minutes of the Authority and business which is not related to such purpose shall not be transacted, nor shall any vote be taken during such executive sessions.
20 ILCS 3501/810-35