NEW YORK, July 16, 2025 (GLOBE NEWSWIRE) -- SL Green Realty Corp. (NYSE:SLG), Manhattan’s largest office landlord, today announced it has signed a new 64,077 square foot lease with Sigma Computing, Inc. for a portion of the 3 rd floor at One Madison Avenue, bringing the property to 78.1% leased. To date in 2025, SL Green has signed Manhattan office leases totaling 1,260,707 square feet, while maintaining a current pipeline of approximately 1.0 million square feet.

“We’re excited to welcome Sigma Computing to One Madison Avenue where they join a sterling tenant roster that includes IBM, Franklin Templeton, Coinbase, Flutter Entertainment and Palo Alto Networks,” said Steven Durels, Executive Vice President and Director of Leasing and Real Property at SL Green . “Midtown South leasing momentum has accelerated and we are encouraged by advanced discussions covering a significant portion of the remaining available space at the property.”

Designed by renowned architect Kohn Pedersen Fox, One Madison Avenue is the most ambitious adaptive reuse project in New York City, uniquely located overlooking Madison Square Park. One Madison Avenue offers industry-leading amenities and a wellness-focused work environment, designed to enhance productivity and well-being. The building’s innovative features include a state-of-the-art HVAC system that circulates 100% fresh air, massive floor-to-ceiling windows offering abundant natural daylight together with amenities such as Le Jardin Sur Madison, a spectacular one-of-a-kind event space and rooftop garden, and La Tête d’Or by Daniel, Chef Daniel Boulud’s latest upscale culinary offering, The Commons, a 7,000 square foot tenant-only lounge, Chelsea Piers Fitness and a curated retail program which features unique food and beverage offerings such as Sweetgreen, Alidoro, Joji Box, Los Tacos No. 1 and Delicious Hospitality.

The tenant was represented by Brent Ozarowski of Newmark. The landlord was represented by Paul Glickman, Alex Chudnoff, Ben Bass and Diana Biasotti of JLL.

About SL Green Realty Corp.
SL Green Realty Corp., Manhattan's largest office landlord, is a fully integrated real estate investment trust, or REIT, that is focused primarily on acquiring, managing and maximizing the value of Manhattan commercial properties. As of June 30, 2025, SL Green held interests in 53 buildings totaling 30.7 million square feet. This included ownership interests in 27.2 million square feet of Manhattan buildings and 2.7 million square feet securing debt and preferred equity investments.

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