David Kellermann, 41, was found home in Northern Virginia.
Kellermann was named acting chief financial officer last September after Anthony Piszel stepped down during the Sept. 2008 government takeover.
Kellermann was responsible for company's financial controls, financial reporting and oversight of the company's budget and financial planning.
He had been with Freddie Mac for the last 16 years.
This is a breaking news story -- more details to follow as they come in.
Neighbours are saying that the stresses of the new postion were visible. Kellermann had lost weight since taking the reins in September.
Paul Unger, who lives across the street from the Kellermanns, called the family a "solid, salt-of-the-earth kind of family" that hosted the neighborhood's Halloween party. "He was just a nice guy ... You cannot imagine what kind of pressures he must have been under," Unger said.
It has been reported that Kellermann's body was found in the basement of his home that he shared with his wife Donna and five-year-old daughter Grace.
John Koskinen, the company's interim chief executive, said in a statement that Kellermann, "was a man of great talents .... His extraordinary work ethic and integrity inspired all who worked with him."