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• Paul and Carol Kleinberg, the founders of the electrical contracting firm that bears their name, paid $9 million for a penthouse apartment at 520 West 19th Street. [Cityfile]
• Casino developer Richard Fields is selling his 38th-floor apartment at 15 CPW for $27 million. The flip will yield him double what he paid for the place in June, but it's $8 million less than what he was looking for when he first listed it in September. [Real Deal]
• Peter Lusk, the former COO at Tony Forstmann's private equity firm Forstmann-Leff International, and his wife Jeanne, have sold their 15th-floor co-op at 1 East 66th Street for $7 million. [Cityfile]