By Bob Goldsborough | JPMorgan Chase & Co. Chairman and Chief Executive Jamie Dimon on Wednesday closed on the sale of his 18-room Gold Coast mansion for $6.8 million.

The buyer’s identity was not immediately available.

On Aug. 31, Dimon significantly reduced the asking price of the eight-bedroom, 13,500-square-foot house to $6.95 million from $9.5 million, and it went under contract soon afterward.  He  asked $13.5 million when it first hit the market in 2007.  In April, he cut the listing price to $9.5 million from $10.5 million. Now living full-time in New York, Dimon, 54, paid $4.68 million for the mansion in 2000.

It  includes nine full baths, two half baths, a master suite that fills the second floor, a great room/media room, a wine vault, a gym, a two-bedroom staff quarters with a separate entrance and a rooftop terrace.

Dimon’s listing agent, Janet Owen of Sudler Sotheby’s, said her client asked her not to comment on the sale.

Dimon and his family live in a co-op unit in a grand courtyard building on Park Avenue in Manhattan that he purchased in late 2004 for $4.875 million.

When Dimon’s mansion first came on the market in 2007, it carried the highest asking price of any residential property then on the market in Chicago.  That distinction now goes to  Bill Wrigley Jr.’s Gold Coast penthouse, available for $14 million.