X0508 4 2025-12-31 0 0001061630 BLACKSTONE MORTGAGE TRUST, INC. BXMT 0002089544 Pena Fernando Austin C/O BLACKSTONE MORTGAGE TRUST 345 PARK AVENUE NEW YORK NY 10154 1 1 0 0 President 1 Class A Common Stock 2025-12-31 4 S 0 3131 19.2379 D 78633 D The sales reported in this Form 4 were effected pursuant to Rule 10b5-1 trading plans adopted on March 3, 2023, March 5, 2024, and February 28, 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 sold in multiple transactions at prices ranging from $19.235 to $19.245, 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 sold at each separate price for all transactions reported on this Form 4. /s/ Anthony F. Marone, Jr., Attorney-In-Fact 2026-01-02