 NEW YORK DALLAS--BUSINESS WIRE--Benefit Street Partners Realty Trust, Inc. BSPRT, a publicly-registered, non-listed real estate investment trust REIT, and Capstead Mortgage Corporation NYSE: CMO Capstead, a REIT, today announced they have entered into a definitive merger agreement. Under the terms of the agreement, Capstead common stockholders will receive a cash payment equal to a 15.75 premium to Capsteads diluted book value per share and shares of BSPRT common stock calcu 