Hammack was born in California to
Howard L. Morgan, a venture capitalist, and a mother who worked as an interior designer. She grew up in
Villanova, Pennsylvania and is the middle of three sisters. In 1989, she graduated from
The Baldwin School located in
Bryn Mawr, Pennsylvania. During her academic career, Hammack was part of a council of student presidents at Stanford that included John Louie, who played the Wing Kid in the 1984 film
Gremlins and
John Overdeck, co-founder and co-chairman of
Two Sigma Investments. She interned twice at the
Philadelphia Stock Exchange during her summer breaks. Hammack was accepted to
Harvard Business School but decided not to attend. ==Goldman Sachs==