Unit #9B is one of 102 in the building, which dates back to 1947.
Mr. Karahan is a developer and currently serves as the president and chief executive officer at The Karahan Co., a construction development firm in Plano, Texas.
According to BlockShopper.com, there were 984 home sales on the Upper East Side in 2008, with a median sales price of $895,000.
Address: 926 Madison Avenue, Unit: 9b
Buyer(s): Karahan, Elizabeth, Karahan and Fehmi
Seller(s): Hudson, David M, Lafiteau and Marianne
Sale date: Aug. 11, 2009