
AppNexus Extends, Expands to Total 220,000 Square Feet at 28-40 West 23rd Street
AppNexus signed a 10-year lease extension and expansion that will give the advertising technology platform a 220,000-square-foot footprint at 28-40 West 23rd Street.
The company’s latest lease for 220,000 square feet–130,000 square feet of it an expansion–in the Flatiron District tower comes nine months after a 24,500-square-foot expansion. AppNexus arrived at the 600,000-square-foot tower about three years ago, initially signing for 24,500 square feet.
Mark Weiss and Rob Eisenberg of Newmark Grubb Knight Frank represented the tenant. Michael Cohen and Andrew Roos of Colliers International, who are both part owners of the building, represented the landlords. Read More










