The Treasury Department says a top aide to Treasury Secretary Timothy Geithner is leaving the department next month.

Treasury spokesman Andrew Williams confirmed late Wednesday that Geithner aide Lee Sachs, the department's point man in the financial crisis, is stepping down.

Sachs is leaving because he views his chief objective, bringing stability to the country's financial sector, has been largely met, The Wall Street Journal reported.

His move may be seen as a further sign the economy has stabilized following its worst crisis since the 1930s and signals the Treasury Department is shifting from crisis management to shepherding an economic recovery.