Dean Witter Trust signs major lease at Harborside.

Dean Witter Trust has agreed to lease 158,000 square feet of prime office space at the Harborside Financial Center, it was announced by Harborside CEO Charles A. Simberg at a luncheon at Harborside attended by Harborside tenants, city and state officals and the Harborside management team.

In a separate transaction, PR Newswire will be relocating approximately half ot its Manhattan-based operations to Harborside, bringing the total of new space leased to nearly 200,000 square feet during April.

With the Dean Witter Trust and PR Newswire signing, Harborside becomes the first major office development on the New Jersey Gold Coast to be 90 percent leased. During the past three years the 1.9 million square-foot office-and-retail complex has attracted such major tenants as the American Institute of certified Public Accountants, The Bank of Tokyo, Sumitomo Bank, SeaLand and Mitsui O.S.K. Lines  (Ameri- and now, Dean Witter Trust and PR Newswire.

Dean Witter Trust, which formerly was located at 2 Montgomery Street in Jersey City, represents the largest move within the Gold Coast since the area began its rebirth a decade ago. Dean Witter Trust will occupy the second and third floors of Plaza II. The 15-year lease was negotiated by Phillip Sprayregen of CB Commercial, representing Dean Witter Trust. PR Newswire is relocating its computer and systems operations from 150 East 58th Street, Manhattan. Tom Grenier of the New Jersey office of Edward S. Gordon Co. represented PR Newswire Mark Ravesloot of Jones Land Wooton represented Harborside in both transactions.