Compass broker Kyle Blackmon listed his apartment at 10 Madison Square West for $11.5 million, a $2.8 million markup on what he paid for the pad last year. Blackmon, who brokered the $88 million sale of Sanford Weill’s penthouse at 15 Central Park West to Russian heiress Ekaterina Rybolovleva in 2012, bought the 2,871-square-foot unit in March 2016, property records show. The LLC used to buy the apartment lists Blackmon’s own apartment at 15 Central […]