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Merger Means Expansion for 100 Wall St. Tenant

Colliers International brokered a 19,650-square-foot lease extension and expansion for Siebert Williams Shank & Co. at Cornerstone Real Estate Advisers’ 100 Wall St. The firm that will occupy the space is the product of a merger between 100 Wall tenant Siebert Cisneros Shank & Co. and The Williams Capital Group. Both are MWBE firms.

The new company, which will officially merge this month, will now occupy the entire 18th floor of the 520,000-square-foot office tower. JLL’s Scott D. Cahaly represented Cornerstone.

“The merging of these two organizations will position Siebert Williams Shank as one of the most historic and influential financial services firms in the country,” said Colliers’ Eric S. Yarbro, who worked with both firms to determine the best approach for their New York headquarters. “The organization’s expanded Financial District headquarters will perfectly complement its dynamic and talented workforce and allow the company to continue growing.”

For comments, questions or concerns, please contact Paul Bubny

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About Paul Bubny

Paul Bubny serves as Senior Content Director for Connect Commercial Real Estate, a role to which he brings 16-plus years’ experience covering the commercial real estate industry and 30-plus years in business-to-business journalism. In this capacity, he oversees daily operations while also reporting on both local/regional markets and national trends, covering individual transactions across all property types, as well as delving into broader subject matter. He produces 7-10 daily news stories per day and works with the Connect team and clients to develop longer-form content, ranging from Q&As to thought-leadership pieces. Prior to joining Connect, Paul was Managing Editor for both Real Estate Forum and GlobeSt.com at American Lawyer Media, where he oversaw operations at both publications while also producing daily news and feature-length articles. His tenure in B2B publishing stretches back into the print era, and he has served as Editor in Chief on four national trade publications. Since 1999, Paul has volunteered as the newsletter editor of passenger rail advocacy groups (one national, one local).

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