From the time Summers became Treasury secretary in 1999 until he left the post in 2001, Sandberg was his chief of staff.

Summers became deputy secretary of the Treasury in 1995, and Sandberg joined him at the Treasury Department in Washington, D.C., as his chief of staff in 1996. Sandberg received a master’s in business administration from Harvard in 1995, and from 1995 to 1996, she worked at the management consulting firm McKinsey & Company. When Summers became chief economist at the World Bank in Washington, D.C., Sandberg joined him there, and together from 1991 to 1993 they worked on projects that helped developing countries. She received her bachelor’s degree in 1991 and was the top student in economics. There she did her undergraduate thesis with economist Lawrence Summers as her adviser. Sandberg studied economics at Harvard University in Cambridge, Massachusetts. Sheryl Sandberg, in full Sheryl Kara Sandberg, (born August 28, 1969, Washington, D.C., U.S.), American technology executive who was chief operating officer (COO) of the social networking company Facebook (2008– ). Sandberg later received a master’s in business administration from Harvard in 1995. Sheryl Sandberg studied economics at Harvard University in Cambridge, Massachusetts.

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