Company: GAINI
Filing Date: 2025-11-06
Form Type: 424B2
Source: 0001193125-25-269767
Chunk: 8

Company: GLADSTONE INVESTMENT CORPORATION\DE
Filing Date: 2025-11-06
Form: 424B2
Chunk 8
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 be rated by a rating agency. Investors should assume that these loans would be rated below what is considered “investment grade” quality. Investments rated below investment grade are often referred to as high yield securities or junk bonds and may be considered higher risk as compared to investment grade debt instruments. Investment Adviser and Administrator We are externally managed by the Adviser, an affiliate of ours and an SEC-registeredinvestment adviser, pursuant to an investment advisory and management agreement. We have also entered into an administration agreement with the Administrator, an affiliate of ours and the Adviser. Each of the Adviser and the Administrator is a privately-held company that is indirectly owned by David Gladstone, our chairman and chief executive officer. Mr. Gladstone also serves on the board of directors of the Adviser, the board of managers of the Administrator, and as an executive officer of the Adviser and the Administrator. The Administrator employs, among others, our chief financial officer and treasurer, chief valuation officer, chief compliance officer, co-generalcounsels and co-secretariesand their respective staffs. The Adviser and Administrator have extensive experience in our lines of business and also provide investment advisory and administrative services, respectively, to our affiliates, including: Gladstone Commercial Corporation, a publicly-traded real estate investment trust; Gladstone Capital Corporation, a publicly-traded BDC and RIC; Gladstone Land Corporation, a publicly-traded real estate investment trust; and Gladstone Alternative Income Fund, a registered, non-diversified, closed-endmanagement investment company that operates as an interval fund. In the future, the Adviser and Administrator may provide investment advisory and administrative services, respectively, to other funds and companies, both public and private. The Adviser was organized as a corporation under the laws of the State of Delaware on July 2, 2002 and is a registered investment adviser under the Investment Advisers Act of 1940, as amended. The Administrator was organized as a limited liability company under the laws of the State of Delaware on March 18, 2005. The Adviser and Administrator are headquartered in McLean, Virginia, a suburb of Washington, D.C. The Adviser also has offices in several other states. S-3

THE OFFERING This prospectus supplement sets forth certain terms of the Notes that we are offering pursuant to this prospectus supplement and supplements the accompanying prospectus. This section outlines the specific legal and financial terms of the Notes. You should read this section together with the section titled “Description of the Notes”