PROSPECTUS SUPPLEMENT SUMMARY
This summary highlights information included elsewhere in this prospectus supplement and the accompanying prospectus or incorporated by reference in this prospectus supplement or the accompanying prospectus. It is not complete and may not contain all of the information that you should consider before making your investment decision. You should carefully read the entire prospectus supplement, the accompanying prospectus, and any related free writing prospectus, including the risks of investing in the Notes discussed in the section titled “Risk Factors” in this prospectus supplement and the accompanying prospectus and any related free writing prospectus, and under similar headings in the other documents that are incorporated by reference into this prospectus supplement.
Except as otherwise indicated, the terms:
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“we,” “us,” “our,” “GBDC” and “Golub Capital BDC” refer to Golub Capital BDC, Inc., a Delaware corporation, and its consolidated subsidiaries;
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“GBDC 3” refers to Golub Capital BDC 3, a Maryland corporation that we acquired on June 3, 2024 pursuant to an agreement and plan of merger by and among us, GBDC 3, GC Advisors, and for certain limited purposes our Administrator, or, as amended (the “GBDC 3 Merger”);
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“2026 Notes” refers to the $600.0 million in aggregate principal amount of unsecured notes issued by Golub Capital BDC on February 24, 2021 and October 13, 2021. The 2026 Notes bear interest at a rate of 2.500% per year payable semi-annually in arrears on February 24 and August 24 of each year. The 2026 Notes mature on August 24, 2026;
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“2027 Notes” refers to the $350.0 million in aggregate principal amount of unsecured notes issued by Golub Capital BDC on August 3, 2021. The 2027 Notes bear interest at a rate of 2.050% per year payable semi-annually in arrears on February 15 and August 15 of each year. The 2027 Notes mature on February 15, 2027;
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“2028 Notes” refers to the $450.0 million in aggregate principal amount of unsecured notes issued by Golub Capital BDC on December 5, 2023. The 2028 Notes bear interest at a rate of 7.050% per year payable semi-annually in arrears on December 5 and June 5 of each year, beginning June 5, 2024. The 2028 Notes mature on December 5, 2028;
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“Existing Notes” refers to the $600.0 million in aggregate principal amount of unsecured notes issued by Golub Capital BDC on February 1, 2024. The Existing Notes bear an interest rate of 6.00% per year payable semi-annually in arrears on January 15 and July 15 of each year. The Existing Notes mature on July 15, 2029. The Notes offered hereby will be treated as a single series with the Existing Notes under the indenture and will have the same terms as the Existing Notes;
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“2024 Debt Securitization” refers to the $2.2 billion term debt securitization that we completed on November 18, 2024, in which Golub Capital BDC CLO 8 LLC, a Delaware LLC and our indirect subsidiary, or the “2024 Issuer”, issued an aggregate of $2,200,500,000 of notes, including $1,192,400,000 of Aaa/AAA Class A-1R Senior Secured Floating Rate Notes due 2036, which bear interest at the three-month secured overnight financing rate published by the Federal Reserve Bank of New York, or “SOFR”, plus 1.56%, $171,600,000 of AAA Class A-2RR Senior Secured Floating Rate Notes due 2036, which bear interest at SOFR plus 1.75% $165,000,000 of AA Class B-R Senior Secured Floating Rate Notes due 2036, which bear interest at SOFR plus 1.70%, $154,000,000 of A Class C-R Senior Secured Floating Rate Notes due 2036, which bear interest at SOFR plus 2.10%, and $517,500,000 Subordinated Notes due 2124, which do not bear interest;
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“GBDC 3 2022 Debt Securitization” refers to the $401.8 million term debt securitization initially completed on January 25, 2022 and that we acquired as part of the GBDC 3 Merger, in which Golub Capital BDC 3 ABS 2022-1 LLC, a Delaware LLC, our indirect subsidiary, or the “GBDC 3 2022 Issuer” issued an aggregate of $401.8 million of notes, or the “GBDC 3 2022 Notes”, including $252.0 million of Class A Senior Secured Floating Rate Notes, which bear interest at a rate of three-month Term SOFR, plus 0.26161%, plus 2.00% and $149.8 million of Subordinated Notes that do not bear interest;
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“GBDC 3 2022-2 Debt Securitization” refers to the $386.6 million term debt securitization initially completed on December 14, 2022 and that we acquired as part of the GBDC 3 Merger, in which Golub