Nuclear Oversight Committee and Nuclear Oversight Subcommittee. Ms. Schaumburg has been a director of NRG since April 2005. From 1984 until her retirement in January 2002, she was at Credit Suisse First Boston in the Global Energy Group, where she last served as Managing Director. From 1979 to 1984, she was in the Utilities Group at Dean Witter Financial Services Group, where she last served as Managing Director. From 1971 to 1978, she was at The First Boston Corporation in the Public Utilities Group.