The home was built in 1910 in the Carnegie Hill Historic District.
Biddle is senior vice president of the international rescue committee at The Virtue Foundation, a non-profit organization that provides relief, protection, rehabilitation, and resettlement services for refugees and victims of oppression or violent conflict. Previously, he was vice president of the International Crisis Group.
He completed his master's degree in international relations at Johns Hopkins University.
Ms. Biddle is a partner at the financial services firm Goldman Sachs & Company in New York.
She graduated from Colby College and American University, where she earned her master's degree in international development.
The Biddles previously sold their condo at 447 E. 57th St. in Midtown East/Turtle Bay for $4.775 million on Aug. 12.
According to BlockShopper.com, there have been 127 home sales in Carnegie Hill during the past 12 months, with a median sales price of $1.33 million.
Address: 131 East 95th Street
Buyer(s): Sardi, As, David and Adelle Sardi
Seller(s): Frank, As Guardian, William A, William A Frank and As Guardian Of Adelle Sardi
Sale date: Nov. 16, 2010