The 21-story Financial District office building was sold reportedly to pay estate taxes for the late Jack Rudin.

The property is located in the Saint Paul Opportunity Zone segment and when completed Waterford Bay will be one of the first Opportunity Zone projects in St. Paul.

The San Diego-based flexible workplace provider is entering the Philadelphia market and will occupy two floors at the recently renovated 850,000-square-foot office building.

“The market choppiness that we have seen throughout the year continued in June, with home sales once again lagging previous-year numbers and sellers struggling to provide the number of homes consumers want,” said Ed Neaves, president-elect of Illinois Realtors.