Golub Capital BDC, Inc. (Golub Capital BDC) is an externally managed, closed-end, non-diversified management investment company. The Company's investment objective is to generate current income and capital appreciation by investing primarily in senior secured, one stop, second lien, subordinated loans of, and warrants and minority equity securities in, United States middle market companies. The Company seeks to create a diverse portfolio that includes senior secured, one stop, second lien and subordinated loans and warrants and minority equity securities by primarily investing in the securities of United States middle market companies. The Company's investment activities are managed by the Company's investment adviser, GC Advisors LLC (GC Advisors).