X0508 4 2025-12-15 0 0001061630 BLACKSTONE MORTGAGE TRUST, INC. BXMT 0001587738 Marone Anthony F. JR C/O BLACKSTONE MORTGAGE TRUST 345 PARK AVENUE NEW YORK NY 10154 0 1 0 0 Chief Financial Officer 1 Class A Common Stock 2025-12-15 4 A 0 14448 0 A 76512 D Class A Common Stock 2025-12-17 4 S 0 1012 20.3125 D 75500 D Represents shares of restricted class A common stock of the Issuer granted pursuant to the Issuer's Stock Incentive Plan. The sales reported in this Form 4 were effected pursuant to Rule 10b5-1 trading plans adopted on March 12, 2024 and March 6, 2025 to satisfy certain tax withholding related obligations in connection with the vesting of previously granted restricted stock awards. The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $20.310 to $20.315, inclusive. The Reporting Person undertakes to provide, upon request by the Securities and Exchange Commission staff, the issuer or a security holder of the issuer, full information regarding the number of shares purchased at each separate price for all transactions reported on this Form 4. /s/ Anthony F. Marone, Jr. 2025-12-17