Blackstone Mortgage Trust Inc a real estate finance company originates senior loans collateralized by commercial properties in North America Europe and Australia The company operates as a real estate investment trust for federal income tax purposes It generally would not be subject to US federal income taxes if it distributes at least 90 of its taxable income to its stockholders The company was formerly known as Capital Trust Inc and changed its name to Blackstone Mortgage Trust Inc in May 2013 Blackstone Mortgage Trust Inc was founded in 1997 and is headquartered in New York New York