0001031316 2026-04-28 2026-04-28 0001031316 false 8-K 2026-04-28 Franklin Street Properties Corp. MD 001-32470 04-3578653 401 Edgewater Place Suite 200 Wakefield MA 01880 781 557-1300 false false false false Common Stock, $.0001 par value per share FSP NYSEAMER false