Frank Sinatra and 530 East 72nd Street

Updated, 11:41 a.m., May 16: Start spreading the news — Frank Sinatra’s former Upper East Side penthouse has found a buyer, the New York Post reported.

The 3,200-square-foot, four-bedroom, four-plus-bathroom co-op is located at 530 East 72nd Street, and an offer from the daughter of a Chinese technology magnate has been accepted, sources told the Post, though the apartment is not yet in contract. It was last listed for $5.5 million with Rubicon Property’s Jason Haber, after dropping down from its original $7.7 million ask. [more]

The Dakota in the Upper West Side (Source: StreetEasy)

Mired in an economic crisis, Portugal is selling off its assets, including an eight-room co-op at the Dakota at 1 West 72nd Street that the country has owned for 40-plus years, according to the New York Post. [more]

Ground Up screenshot

The founders of residential brokerage Rubicon Property have launched a related technology company called Rubicon Media, which will build mobile applications and other software targeted at the real estate industry, the firm’s CEO, Jason Haber, told The Real Deal on Friday.

Rubicon Media’s first product, called Ground Up, debuted today. The application is a digital sign-in sheet designed for on-site sales offices at new developments. The information collected from the application feeds into a content management system, allowing developers to track visitors and suss out trends in foot traffic. [more]