Mr. Daugerdas, the former head of Jenkens & Gilchrist’s Chicago office, was indicted with six other people in June 2009 on charges of conspiracy and tax evasion for selling phony tax shelters from 1994 to 2004. Robert Greisman, a former partner at BDO Seidman, and Erwin Mayer, a former lawyer with Jenkens & Gilchrist, pleaded guilty and cooperated with the government.