Insider Transaction of Blackstone Mortgage Trust, Inc.

Nnenna Lynch, a director at Blackstone Mortgage Trust, Inc. (BXMT), acquired 6,597 Class A Common Stock Units on June 26, 2026. These units were awarded in lieu of retainer and meeting fees, with the number of shares calculated based on a fee amount of $115,000 and a closing price of $17.43 per share on the award date. The award vests fully on the date of the Company's 2027 annual meeting, provided Lynch continues to provide services to the company. Following this transaction, Lynch owns 41,805 shares of Class A Common Stock. This filing is a Form 4, indicating a change in beneficial ownership.