SL Green Realty Corp Reports 1.9M SF in Manhattan Office Leasing for 2025

NEW YORK — SL Green Realty Corp. announced Oct. 15, 2025, that it has signed Manhattan office leases totaling 1,924,364 square feet to date in 2025, with a current pipeline exceeding 1 million square feet. The company also reported that occupancy at its One Madison Avenue property has increased to 91.2%.

Key Office Leases in 2025

At One Madison Avenue, Harvey AI Corporation signed a new 10-year lease for 92,663 square feet on the entire sixth floor. A financial services company also expanded its existing lease by another 92,663 square feet on the same floor. Sigma Computing Inc. entered into an 11-year lease for 64,077 square feet on a portion of the third floor. These transactions collectively raised the building's leased occupancy to 91.2%.

Additional Manhattan Leasing Activity

The New York State Office of General Services signed a 15-year expansion lease covering 66,106 square feet on the 44th and 46th floors at 919 Third Avenue, bringing its total footprint in the building to 117,390 square feet. At 280 Park Avenue, Teneo Holdings LLC renewed its 10-year lease for 46,551 square feet on the entire fourth floor, while Sagard Capital Partners Management Corp. completed a 10-year renewal and expansion covering 40,516 square feet on the 33rd and 34th floors.

Brokerage and Representation

At One Madison Avenue, landlord representation was provided by Paul Glickman, Alexander Chudnoff, Ben Bass, JLL. Tenant representation for Harvey AI Corporation came from Joe Messina and Todd Stracci of JLL. The financial services company was represented by Todd Stracci of JLL, Newmark.

For the 919 Third Avenue lease, the New York State Office of General Services was represented by Stephen Siegel, Liz Lash, Peter Larkin, CBRE, while the landlord team included Robert Alexander, Ryan Alexander, Emily Chabrier, Taylor Callahan, Alex D’Amario, and Nicole Marshal of CBRE. The Sagard Capital Partners lease involved landlord representation by Peter Turchin, Gregg Rothkin, Hanna Gerard, and Brad Auerbach of CBRE. Teneo Holdings LLC was represented by Matthew McBride of CBRE.

Market Commentary

“Tenant demand remains robust in both Midtown Manhattan and Midtown South,” said Steven M. Durels, Executive Vice President, Director of Leasing and Real Property at SL Green Realty Corp. “Rents are rising as supply tightens in both of these submarkets.”

About SL Green Realty Corp

SL Green Realty Corp. (NYSE: SLG) is a publicly traded real estate investment trust and Manhattan’s largest office landlord. The company focuses on acquisition, development, and management of commercial properties across New York City.

Sources

Source: SL Green Realty Corp press release