GOLUB CAPITAL BDC Inc

(a) Evaluation of Disclosure Controls and Procedures

As of September 30, 2024 (the end of the period covered by this report), management, with the participation of our chief executive officer and chief financial officer, evaluated the effectiveness of the design and operation of our disclosure controls and procedures (as defined in Rule 13a-15(e) and 15d-15(e) of the Exchange Act). Based on that evaluation, our management, including the chief executive officer and chief financial officer, concluded that, at the end of such period, our disclosure controls and procedures were effective and provided reasonable assurance that information required to be disclosed in our periodic SEC filings is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information 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. Notwithstanding the foregoing, a control system, no matter how well designed and operated, can provide only reasonable, not absolute, assurance that it will detect or uncover failures within the Company to disclose material information otherwise required to be set forth in the Company’s periodic reports.

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

Management’s Report on Internal Control Over Financial Reporting and Ernst & Young LLP's Report of Independent Registered Public Accounting Firm are included in“Item 8. Consolidated Financial Statements and Supplementary Data” of this annual report on Form 10-K.

(c) Changes in Internal Controls Over Financial Reporting

Management has not identified any change in our internal control over financial reporting that occurred during the fourth fiscal quarter of 2024 that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.