In October 2012, the Company, formed a joint venture which entered into a 99-year triple net ground lease on 1080 Amsterdam Avenue, Manhattan, an 82,250 square foot, 96 unit residential building. The joint venture intends to embark on an extensive capital improvement program over the next two years to convert the property into a luxury Upper West Side residential address.In November 2012, the Company sold a 49.5 percent interest in 521 Fifth Avenue at a gross sales price of $315.0 million and refinanced the property with a new $170.0 million, 7-year mortgage which bears interest at 220 basis points over the 30-day LIBOR for the first 2 years and at a fixed rate of 3.725 percent thereafter. This transaction generated $84.8 million in proceeds for the Company and resulted in a gain on sale of $19.4 million. In December 2012, the Company acquired a 35.5 percent interest in the 147,619 square foot office property at 315 West 36 th Street at a gross purchase price of $45.0 million. Simultaneously, the Company closed on a $25.0 million 5-year loan that bears a fixed rate of interest of 3.16 percent. In December 2012, the Company acquired the 68,342 square foot retail property anchored by Burberry and Diesel located at 131-137 Spring Street in the popular SoHo neighborhood of Manhattan for total consideration of $122.3 million. The property includes prime retail space, office space, 6 residential rental units and 100 feet of ground floor frontage. Debt and Preferred Equity Investment Activity The Company’s debt and preferred equity investment portfolio totaled $1.4 billion at December 31, 2012. During the fourth quarter, the Company purchased and originated new debt and preferred equity investments totaling $291.6 million, all of which are collateralized by New York City commercial office properties, and recorded $13.0 million of principal reductions from investments that were sold, repaid or otherwise resolved. The debt and preferred equity investment portfolio had a weighted average maturity of 2.2 years as of December 31, 2012 and had a weighted average yield during the quarter ended December 31, 2012 of 9.88 percent.