Jenner & Block appointed Chicago-based partners Gayle E. Littleton and Erin R. Schrantz to practice leadership roles.Littleton leads complex corporate internal investigations and represents companies engaged in civil litigation as well as companies and individuals in criminal proceedings.Schrantz specializes in monitorships, cross-border investigations into financial crimes and corruption, and developing comprehensive compliance programs and cultural reforms that reflect an organization’s values.• Last week, …