805 ILCS 30/7
If any stockholder of any of the companies, parties to the agreement or agreements provided for in section 4, not voting in favor of or not acquiescing in such agreement or agreements, objects to the purchase or lease, or the consolidation and merger, as defined in said agreement or agreements, he shall give notice of his dissent within thirty days of such meeting and may demand payment for his stock, and shall thereupon receive from such corporation in which he shall hold stock, its fair cash value, at the time when the vote for the agreement or agreements was so cast, and such corporation shall cancel the same. But if such dissenting stockholder shall refuse to part with his stock, or if the value of the same cannot be agreed upon, then such corporation shall, within ninety days of the time of said meeting, proceed to take and acquire the same and the interest of said dissenting stockholder therein, by the exercise of the power and right of eminent domain, hereby granted to such corporation for that purpose, and paying to, or tendering to, such dissenting stockholder, or to the county treasurer for his use, the value of the stock by him held, such value to be ascertained as of the time aforesaid and to be found and determined in the manner provided for the condemnation of property for public use by the exercise of the right of eminent domain under the Eminent Domain Act . Any stock so acquired shall be cancelled by the company acquiring the same. If such stockholder shall not give notice of his dissent within thirty days, as aforesaid, he shall be held to have acquiesced in the agreement aforesaid, and shall be subject thereto.
805 ILCS 30/7