BLACKSTONE MORTGAGE TRUST, INC.

Evaluation of Disclosure Controls and Procedures

The company maintains disclosure controls and procedures (as that term is defined in Rules 13a-15(e) and 15d-15(e) under

the Exchange Act) that are designed to ensure that information required to be disclosed in the company’s reports under the

Exchange Act is recorded, processed, and summarized and reported within the time periods specified in the SEC’s rules

and forms, and that such information is accumulated and communicated to the company’s management, including its Chief

Executive Officer and Chief Financial Officer, as appropriate, to allow timely decisions regarding required disclosures.

Any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of

achieving the desired control objectives. An evaluation of the effectiveness of the design and operation of our disclosure

controls and procedures as of the end of the period covered by this Annual Report on Form 10-K was made under the

supervision and with the participation of our management, including our Chief Executive Officer and Chief Financial

Officer. Based upon this evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that our

disclosure controls and procedures (a) are effective to ensure that information required to be disclosed by us in reports filed

or submitted under the Exchange Act is recorded, processed, summarized and reported within the time periods specified by

SEC rules and forms and (b) include, without limitation, controls and procedures designed to ensure that information

required to be disclosed by us in reports filed or submitted under the Exchange Act is accumulated and communicated to

our management, including our Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely

decisions regarding required disclosure.

Changes in Internal Control Over Financial Reporting

There have been no changes in our “internal control over financial reporting” (as defined in Rule 13a–15(f) of the

Exchange Act) that occurred during our most recent quarter that have materially affected, or are reasonably likely to

materially affect, our internal control over financial reporting.

Management’s Report on Internal Control Over Financial Reporting

Management of Blackstone Mortgage Trust, Inc. and subsidiaries, or Blackstone Mortgage Trust, is responsible for

establishing and maintaining adequate internal control over financial reporting. Blackstone Mortgage Trust’s internal

control over financial reporting is a process designed under the supervision of its Chief Executive Officer and Chief

Financial Officer to provide reasonable assurance regarding the reliability of financial reporting and the preparation of its

consolidated financial statements for external reporting purposes in accordance with accounting principles generally

accepted in the United States of America.

Blackstone Mortgage Trust’s internal control over financial reporting includes policies and procedures that pertain to the

maintenance of records that, in reasonable detail, accurately and fairly reflect transactions and dispositions of assets;

provide reasonable assurances that transactions are recorded as necessary to permit preparation of financial statements in

accordance with generally accepted accounting principles, and that receipts and expenditures are being made only in

accordance with authorizations of management and our directors; and provide reasonable assurance regarding prevention or

timely detection of unauthorized acquisition, use or disposition of our assets that could have a material effect on its

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. In

addition, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become

inadequate because of changes in conditions or that the degree of compliance with the policies or procedures may

deteriorate.

Management conducted an assessment of the effectiveness of Blackstone Mortgage Trust’s internal control over financial

reporting as of December 31, 2025, based on the framework established in Internal Control—Integrated Framework (2013)

issued by the Committee of Sponsoring Organizations of the Treadway Commission. Based on this assessment,

management has determined that Blackstone Mortgage Trust’s internal control over financial reporting as of December 31,

2025, was effective.

Deloitte & Touche LLP, an independent registered public accounting firm, has audited Blackstone Mortgage Trust’s

financial statements included in this report on Form 10-K and issued its report on the effectiveness of Blackstone Mortgage

Trust’s internal control over financial reporting as of December 31, 2025, which is included herein.