AppNexus Expands At 28-40 West 23rd St.

The tech company AppNexus is expanding at 28-40 West 23rd Street, taking 24,500 square feet on the building’s fifth floor.

The deal will add to the 66,000 square feet the company already leases at the building, the 600,000-square-foot property’s entire fourth floor.

AppNexus will take the new space for five years in the deal for rents in the high $50s per square foot.
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AppNexus Expands At 28-40 West 23rd St.