SL Green Realty Corp. Strengthens Tenancy at One Madison Avenue
In an exciting development, SL Green Realty Corp. (NYSE: SLG) has successfully secured a new lease with Sigma Computing, Inc. covering approximately 64,077 square feet on the 3rd floor of the iconic One Madison Avenue. This strategic lease signing elevates the building's occupancy rate to a notable 78.1%.
Significant Leasing Milestones in 2025
The signing of this lease is a part of SL Green's broader leasing efforts, which has seen a remarkable total of 1,260,707 square feet leased in Manhattan throughout 2025. Currently, SL Green is managing a robust leasing pipeline with an estimated 1 million square feet still available. This dynamic leasing environment demonstrates the ongoing demand for office space in Manhattan, particularly in Midtown South.
Welcoming Sigma Computing
Steven Durels, Executive Vice President and Director of Leasing and Real Property at SL Green, expressed enthusiasm about welcoming Sigma Computing to One Madison Avenue. He noted, "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." This diverse group of tenants underscores the building's appeal to a wide range of innovative companies.
Innovative Amenities at One Madison Avenue
One Madison Avenue, designed by the acclaimed architectural firm Kohn Pedersen Fox, stands as one of the most ambitious adaptive reuse projects in New York City. The building is situated with stunning views of Madison Square Park, providing a unique setting for tenants. It boasts a myriad of industry-leading amenities aimed at fostering productivity and well-being among its occupants.
Exceptional Features and Services
The amenities at One Madison Avenue are exemplary, featuring a cutting-edge HVAC system that circulates 100% fresh air, creating a healthier work environment. The spacious floor-to-ceiling windows allow for an abundance of natural light, further enhancing the atmosphere. Notable features include:
- **Le Jardin Sur Madison**: An exceptional event space and rooftop garden perfect for gatherings.
- **La Tête d’Or by Daniel**: A culinary experience led by world-renowned Chef Daniel Boulud.
- **The Commons**: A 7,000 square foot tenant-only lounge ideal for relaxation and networking.
- **Chelsea Piers Fitness**: A premier fitness facility available for tenants looking to prioritize health and wellness.
- **Curated Retail Offerings**: Including unique dining options like Sweetgreen, Alidoro, Joji Box, Los Tacos No. 1, and Delicious Hospitality.
A Collaborative Leasing Approach
During this leasing transaction, Sigma Computing was expertly represented by Brent Ozarowski from Newmark. On the other hand, SL Green's interests were handled by Paul Glickman, Alex Chudnoff, Ben Bass, and Diana Biasotti from JLL. This collaboration exemplifies the importance of teamwork in achieving successful real estate transactions.
About SL Green Realty Corp.
SL Green Realty Corp. is recognized as Manhattan's largest office landlord and operates as a fully integrated real estate investment trust (REIT). The company's focus lies primarily in acquiring, managing, and enhancing the value of commercial properties in Manhattan. As of mid-2025, SL Green has interests in 53 buildings totaling a remarkable 30.7 million square feet, which includes substantial equity stakes in 27.2 million square feet of properties across the bustling Manhattan market.
Frequently Asked Questions
What is the significance of the new lease with Sigma Computing?
The lease with Sigma Computing marks an important addition to SL Green's portfolio, contributing to the overall leasing momentum in Manhattan.
How many square feet has SL Green leased in 2025?
As of 2025, SL Green has completed leases totaling approximately 1,260,707 square feet in Manhattan.
What amenities does One Madison Avenue offer tenants?
One Madison Avenue features top-tier amenities including a fresh air HVAC system, spacious windows, a rooftop garden, and diverse dining options.
Who represented Sigma Computing in the lease agreement?
Sigma Computing was represented by Brent Ozarowski of Newmark in the lease agreement.
What type of company is SL Green Realty Corp.?
SL Green Realty Corp. is a real estate investment trust (REIT) specializing in the management and acquisition of commercial properties in Manhattan.
