Power of Attorney for Jean Hsu

Jean Hsu has appointed Katharine A. Keenan, Scott Mathias, Marcin Urbaszek, F. Austin Peña, and Anthony F. Marone, Jr. as attorneys-in-fact to execute and deliver forms required by the U.S. Securities and Exchange Commission related to her ownership of or transactions in securities of Blackstone Mortgage Trust, Inc. This includes filings under Section 16(a) of the Securities Exchange Act of 1934, such as Forms 3, 4, and 5, as well as applications for EDGAR access codes. The Power of Attorney will remain in effect until Jean Hsu is no longer required to file these forms, unless revoked earlier in writing.