GLADSTONE INVESTMENT CORPORATION\DE

General

We were incorporated under the General Corporation Law of the State of Delaware on February 18, 2005. We operate as an externally managed, closed-end, non-diversified management investment company and have elected to be treated as a BDC under the Investment Company Act of 1940, as amended (the “1940 Act”). For U.S. federal income tax purposes, we have elected to be treated as a RIC under Subchapter M of the Internal Revenue Code of 1986, as amended (the “Code”). To continue to qualify as a RIC for U.S. federal income tax purposes and obtain favorable RIC tax treatment, we must meet certain requirements, including certain minimum distribution requirements.

We were established for the purpose of investing in debt and equity securities of established private businesses operating in the United States (“U.S.”). Our investment objectives are to: (i) achieve and grow current income by investing in debt securities of established businesses that we believe will provide stable earnings and cash flow to pay expenses, make principal and interest payments on our outstanding indebtedness, and make distributions to our stockholders that grow over time; and (ii) provide our stockholders with long-term capital appreciation in the value of our assets by investing in equity securities of established businesses, generally in combination with the aforementioned debt securities, that we believe can grow over time to permit us to sell our equity investments for capital gains. To achieve our objectives, our investment strategy is to invest in several categories of debt and equity securities, with individual investments generally totaling up to $75 million, although investment size may vary depending upon our total assets or available capital at the time of investment. We expect that our investment portfolio over time will consist of approximately 70% in debt investments and 30% in equity investments, at cost. As of September 30, 2026, our investment portfolio was comprised of 70.4% in debt investments and 29.6% in equity investments, at cost.

We focus on investing in lower middle market private businesses (which we generally define as private companies with annual earnings before interest, taxes, depreciation and amortization (“EBITDA”) of $5 million to $25 million) (“Lower Middle Market”) in the U.S. that meet certain criteria, including: the sustainability of the business’ free cash flow and its ability to grow it over time, adequate assets for loan collateral, experienced management teams with a significant ownership interest in the portfolio company, reasonable capitalization of the portfolio company, including an ample equity contribution or cushion based on prevailing enterprise valuation multiples, and the potential to realize appreciation and gain liquidity in our equity position, if any. We anticipate that liquidity in our equity position will be achieved through a merger, acquisition or recapitalization of the portfolio company, a public offering of the portfolio company’s stock, or, to a lesser extent, by exercising our right to require the portfolio company to repurchase our warrants, as applicable, though there can be no assurance that we will always have these rights. We invest in portfolio companies that seek funds for management buyouts and/or growth capital to finance acquisitions, recapitalize or, to a lesser extent, refinance their existing debt facilities. We seek to avoid investing in high-risk, early-stage enterprises. Our targeted portfolio companies are generally considered too small for the larger capital marketplace.

We invest by ourselves or jointly with other funds and/or management of the portfolio company, depending on the opportunity. The SEC has granted us an exemptive order (the “Co-Investment Order”) that expands our ability to co-invest, under certain circumstances, with certain of our affiliates, including Gladstone Capital Corporation and Gladstone Alternative Income Fund ("Gladstone Alternative") and any future BDCs, registered closed-end management investment company or managed fund and account that is advised (or sub-advised if it controls the fund) by the Adviser, or any combination of the foregoing, subject to the conditions in the Co-Investment Order. Under the Co-Investment Order, allocations must be “fair and equitable” to us and the Adviser must consider our interests in allocations. We believe the Co-Investment Order has enhanced and will continue to enhance our ability to further our investment objectives and strategies. If we are participating in an investment with one or more co-investors, whether or not an affiliate of ours, our investment is likely to be smaller than if we were investing alone.

We are externally managed by the Adviser, an investment adviser registered with the SEC and an affiliate of ours, pursuant to an investment advisory and management agreement (the “Advisory Agreement”). The Adviser manages our investment activities. We have also entered into an administration agreement with Gladstone Administration, LLC, an affiliate of ours and the Adviser, whereby we pay separately for administrative services.

Our shares of common stock, our 4.875% Notes due 2028 ("4.875% 2028 Notes"), our 7.875% Notes due 2030 (“7.875% 2030 Notes”) and our 7.125% Notes due 2031 ("7.125% 2031 Notes") are traded on the Nasdaq Global Select Market (“Nasdaq”) under the trading symbols “GAIN,” “GAINZ,” “GAINI,” and "GAING," respectively. Our 6.875% Notes due 2028 ("6.875% 2028 Notes") are not listed.

Business

Portfolio and Investment Activity

While the business environment remains competitive, we continue to see new investment opportunities consistent with our investment strategy of providing a combination of debt and equity in support of management and independent sponsor-led buyouts of Lower Middle Market companies in the U.S. During the six months ended September 30, 2026, we invested in two new portfolio companies. From our initial public offering in June 2005 through September 30, 2026, we have invested in 68 companies, excluding investments in syndicated loans, for a total of approximately $2.4 billion, before giving effect to principal repayments and divestitures.

The majority of the debt securities in our portfolio have a success fee component, which enhances the yield on our debt investments. Unlike paid-in-kind (“PIK”) income, we generally do not recognize success fees as income until payment has been received. Due to the contingent nature of success fees, there are no guarantees that we will be able to collect any or all of these success fees or know the timing of any such collections. As a result, as of September 30, 2026, we had unrecognized, contractual success fees of $68.7 million, or $1.72 per common share. Consistent with accounting principles generally accepted in the U.S. (“GAAP”), we have not recognized success fee receivables and related income in our accompanying Consolidated Financial Statements until earned.

From inception through September 30, 2026, we exited our investments in 33 portfolio companies that we acquired under our buyout strategy. In the aggregate, these sales have generated $353.6 million in net realized gains and $45.4 million in other income upon exit, for a total increase to our net assets of $399.0 million. We believe, in aggregate, these transactions were equity-oriented investment successes and exemplify our investment strategy of striving to achieve returns through current income on the debt portion of our investments and capital gains from the equity portion. The 33 liquidity events have offset any realized losses since inception, which were primarily incurred during the 2008-2009 recession in connection with the sale of performing syndicated loans at a realized loss to pay off a former lender. The successful exits, in part, enabled us to increase the monthly distribution per common share by 100.0% from March 2011 through September 30, 2026, and allowed us to declare and pay 24 supplemental distributions to common stockholders through September 30, 2026.

Capital Raising

We have been able to meet our capital needs through extensions of and increases to the Fifth Amended and Restated Credit Agreement dated April 30, 2013, as amended from time to time (the “Credit Facility”), and by accessing the capital markets in the form of public offerings of unsecured notes, as well as common and preferred stock. We have successfully extended the Credit Facility’s revolving period multiple times, most recently to June 2029, and currently have a total commitment amount of $405.0 million (with a potential total commitment of $500.0 million through additional commitments from new or existing lenders). During the year ended March 31, 2026, we issued the 6.875% 2028 Notes for gross proceeds of $60.0 million, issued the 7.125% 2031 Notes for gross proceeds of $100.0 million and sold 2,984,586 shares of our common stock under our "at-the-market" program (the "Common Stock ATM Program") for gross proceeds of approximately $42.1 million. Refer to “Liquidity and Capital Resources — Revolving Line of Credit” for further discussion of the Credit Facility and to “Liquidity and Capital Resources — Equity — Common Stock” for further discussion of our common stock.

Although we have been able to access the capital markets historically, market conditions affect the trading price of our common stock and thus our ability to finance new investments through the issuance of common equity. On September 30, 2026, the closing market price of our common stock was $15.60 per share, representing a 5.1% discount to our net asset value (“NAV”) of $16.43 per share as of September 30, 2026. When our common stock trades below NAV, our ability to issue additional equity is constrained by provisions of the 1940 Act, which generally prohibits the issuance and sale of our common stock at an issuance price below the then-current NAV per share without stockholder approval, other than through sales to our then-existing stockholders pursuant to a rights offering. We received such stockholder approval on September 4, 2026 (covering any such sales during the 12-months following such approval).

Regulatory Compliance

Our ability to seek external debt financing, to the extent that it is available under current market conditions, is further subject to the asset coverage limitations of the 1940 Act, which require us to have asset coverage (as defined in Sections 18 and 61 of the 1940 Act) of at least 150% on each of our senior securities representing indebtedness and our senior securities that are stock.

On April 10, 2018, our Board of Directors, including a “required majority” (as such term is defined in Section 57(o) of the 1940 Act) thereof, approved the modified asset coverage requirements set forth in Section 61(a)(2) of the 1940 Act. As a result, our asset coverage requirements for senior securities changed from 200% to 150%, effective as of April 10, 2019, one year after the date of the Board of Directors’ approval.

As of September 30, 2026, our asset coverage ratio on our senior securities representing indebtedness was 188.7%.

Investment Highlights

Investment Activity

During the six months ended September 30, 2026, the following significant transactions occurred:

•In June 2026, we entered into a new $3.0 million secured first lien term loan with Home Concepts Acquisition, Inc. ("Home Concepts"), restructuring our previously outstanding secured first lien term loan with a cost basis of $12.0 million, which resulted in a realized loss of $9.0 million.

•In July 2026, we invested $56.4 million in a new portfolio company, DHE Computer Systems Acquisition, Inc. ("DHE"), in the form of $40.3 million of secured first lien debt and $16.1 million of preferred equity. DHE, headquartered in Centennial, Colorado, is a full-service technology solutions provider serving the education, state and local government, and commercial markets.

•In July 2026, we invested an additional $5.1 million, in the form of $1.5 million of secured first lien debt and $3.6 million of preferred equity, in Global GRAB Technologies, Inc. ("Global GRAB") to fund an add-on acquisition.

•In July 2026, SFEG Holdings, Inc. (“SFEG”) agreed to the sale of its subsidiary Specialized Fabrication Equipment Group LLC, which closed in October 2026. In connection with the transaction, we received $0.5 million of success fee income and $54.6 million from the repayment at par of our debt investment. Subject to final dissolution and escrow settlements, proceeds for our remaining equity investment in SFEG, including the return of our capital and related capital gains, are expected to be distributed to us during the third or fourth quarter of the current fiscal year.

•In September 2026, we invested an additional $15.8 million, in the form of $12.5 million of secured first lien debt and $3.3 million of preferred equity, in Global GRAB to fund an add-on acquisition.

•In September 2026, we invested an additional $18.6 million, in the form of $14.4 million of secured first lien debt and $4.2 million of preferred equity, in Detroit Defense, Inc. to fund an add-on acquisition.

•In September 2026, we invested $58.6 million in a new portfolio company, Extrude Hone LLC ("Extrude Hone"), in the form of $43.2 million of secured first lien debt and $15.4 million of preferred equity. Extrude Hone, headquartered in Irwin, Pennsylvania, is a provider of precision surface-finishing solutions used in mission-critical applications.

Distributions and Dividends

•In October 2026, our Board of Directors declared the following monthly cash distributions to common stockholders: