NEW YORK—Stack Exchange Inc. has signed a lease to occupy 30,230 sq. ft. of space at 110 William Street. The company, an online network of communities, will take up space spanning the entire 27th and 28th floors of the building for an 11-year term. This lease brings the property to 97 percent occupied.

In this transaction, the landlord was represented by Jonathan J. Dean of Swig Equities, along with Bill Stempel of McDermott Will & Emery LLP. The tenant was represented by Jonathan D. Blum.

110 William Street is a 900,000-square-foot multi-tenant office building located in the heart of Downtown Manhattan’s FiDi (Financial District) neighborhood. Swig Equities & Longwing Real Estate Ventures, LLC, a member of the Dubai Investment Group, have owned 110 William Street since 2004 and recently renovated the lobby and curtain wall façade, as well as the security and fire life-safety systems of the building.

Stack Exchange is an expert-user-run network of question and answer Web sites, each covering a specific topic.

Other major tenants at 110 William Street include WB Engineering & Consulting PLLC, Insurance Information Institute Inc., New York City Economic Development Corporation and Superintendent of Insurance of the State of New York.