LaSalle Investment Management, a Chicago-based investment manager and independent subsidiary of JLL (NYSE: JLL), has finalized a deal to acquire Ten Post Office Square in downtown Boston.

Synergy Investments, a commercial real estate owner and manager based in Boston, acquired the 452,000-square-foot, two-building office complex in 2014 in a joint venture with GreenOak Real Estate out of New York City. According to LaSalle, Synergy will stay on…