GLADSTONE CAPITAL CORP

a) Disclosure Controls and Procedures

As of September 30, 2025 (the end of the period covered by this report), we, including our Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness and design and operation of our disclosure controls and procedures. Based on that evaluation, our management, including the Chief Executive Officer and Chief Financial Officer, concluded that our disclosure controls and procedures were effective in timely alerting management, including the Chief Executive Officer and Chief Financial Officer, of material information about us required to be included in periodic SEC filings. However, in evaluating the disclosure controls and procedures, management recognized that any controls and procedures, no matter how well designed and operated can provide only reasonable assurance of achieving the desired control objectives, and management necessarily was required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures.

b) Management’s Annual Report on Internal Control Over Financial Reporting

Refer to the Management’s Annual Report on Internal Control over Financial Reporting located in Item 8 of this Form 10-K.

c) Attestation Report of the Registered Public Accounting Firm

Not Applicable.

d) Change in Internal Control over Financial Reporting

There were no changes in internal controls for the three months ended September 30, 2025 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.