Franklin Street Properties Corp. (FSP Corp) is a real estate investment trust (REIT). The Company is focused on commercial real estate investments primarily in office markets and operates through real estate operations segment. The real estate operations segment involves real estate rental operations, leasing, secured financing of real estate and services provided for asset management, property management, property acquisitions, dispositions and development. FSP Corp holds, directly and indirectly, 100% of the interest in three former subsidiaries: FSP Investments LLC, FSP Property Management LLC, FSP Holdings LLC, and FSP Protective TRS Corp. The Company operates some of its business through these subsidiaries.