(December 30, 2019, 12:40 PM EST) -- CHICAGO — An investor sued utility company Exelon Corp. and several of its senior executives in Illinois federal court on Dec. 16, alleging that the defendants issued a series of misrepresentations concealing the company’s involvement in unlawful lobbying activities in violation of federal securities law (Joshua Flynn v. Exelon Corp., et al., No. 19-8209, N.D. Ill.)....