Core Insights - SL Green Realty Corp. has signed a new lease with Sigma Computing for 64,077 square feet at One Madison Avenue, increasing the property's occupancy to 78.1% [1] - In 2025, SL Green has signed office leases totaling 1,260,707 square feet in Manhattan, with a current pipeline of approximately 1.0 million square feet [1] Company Overview - SL Green Realty Corp. is Manhattan's largest office landlord and operates as a fully integrated real estate investment trust (REIT), focusing on acquiring, managing, and maximizing the value of Manhattan commercial properties [4] - As of June 30, 2025, SL Green held interests in 53 buildings totaling 30.7 million square feet, including 27.2 million square feet of Manhattan buildings and 2.7 million square feet securing debt and preferred equity investments [4] Property Features - One Madison Avenue is designed by Kohn Pedersen Fox and is noted as the most ambitious adaptive reuse project in New York City, featuring industry-leading amenities and a wellness-focused work environment [2] - The building includes a state-of-the-art HVAC system that circulates 100% fresh air, large floor-to-ceiling windows, and various amenities such as a rooftop garden, tenant-only lounge, and curated retail offerings [2]