• Bruce Lisman, the former co-head of global equities at Bear Stearns, has cut the price of his apartment at 923 Fifth Ave. The four-bedroom is now $16.75 million, down from the $22.5 million he was seeking when he first put the home on the market in November of last year. [Cityfile, BHS]
• Colombian ambassador to the U.N. Claudia Blum and her husband Francisco Barberi have paid $3.9 million for a third-floor co-op at 936 Fifth Avenue, which happens to be right next door to the other apartment they bought in the building for $3.35 million earlier this month. [NYO]
• Michael Mancuso, the recently-appointed CFO of SPX, paid $2.5 million for a three-bedroom apartment at 137 Reade Street. [Cityfile]

• It's not all bad news for the Plaza. An unidentified buyer just closed on a three-bedroom apartment in the building for $5.01 million. Originally listed at $6 million in April, the apartment was reduced by $500,000 in July. The buyer is listed in property records as Perla Properties LLC. [Cityfile, previously]
• Claudia Blum, the Colombian ambassador to the United Nations, and her husband Francisco Barberi have paid $3.35 million for a third-floor apartment at 936 Fifth Avenue. [Cityfile]
• Bill Royall, president of the college recruiting firm Royall & Co., paid $5.5 million for a duplex penthouse at 4 Sutton Place. [Cityfile]