UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 345 Park Avenue New York, New York 10154 (Address of Principal Executive Offices) (Zip Code) Registrant's telephone number, including area code: (212) 655-0220 Date of Report (Date of earliest event reported): July 30, 2026 Blackstone Mortgage Trust, Inc. (Exact name of registrant as specified in its charter) (State or Other Jurisdiction of In ...