GLADSTONE INVESTMENT CORPORATIONDE

(IN THOUSANDS)

Supplemental disclosures of non-cash operating activities:

For the year ended March 31, 2024:

•In March 2024, we recognized a $14.7 million realized loss on our preferred and common equity investments and related first and second lien debt investments in The Mountain Corporation ("The Mountain") upon its liquidation and dissolution.

For the year ended March 31, 2023:

•In August 2022, in conjunction with a refinancing at Ginsey Home Solutions, Inc. ("Ginsey"), there was a $5.1 million payment made by Ginsey to extinguish our secured borrowing liability. Refer to Note 3 - Investments and Note 5 - Borrowings for further discussion.

•In December 2022, we replaced our previously outstanding secured second lien term loan and second lien delayed draw term loan to The Mountain with a total aggregate cost basis of $13.2 million with a new $3.2 million secured second lien term loan, which resulted in a realized loss of $10.0 million.

For the year ended March 31, 2022:

•In March 2022, we replaced our previously outstanding first lien term loan to J.R. Hobbs Co. - Atlanta, LLC ("J.R. Hobbs") with a total cost basis of $36.0 million with a new $26.0 million first lien term loan, which resulted in a realized loss of $10.0 million.

(A)Certain of the securities listed are issued by affiliate(s) of the indicated portfolio company. The majority of the securities listed, totaling $717.3 million at fair value, are pledged as collateral to our revolving line of credit, as described further in Note 5—Borrowings in the accompanying Notes to Consolidated Financial Statements. Additionally, under Section 55 of the Investment Company Act of 1940, as amended (the "1940 Act"), we may not acquire any non-qualifying assets unless, at the time such acquisition is made, qualifying assets represent at least 70% of our total assets. As of March 31, 2024, our investment in Funko Acquisition Holdings, LLC ("Funko") was considered a non-qualifying asset under Section 55 of the 1940 Act and represented less than 0.1% of total investments, at fair value.

(B)Unless indicated otherwise, all cash interest rates are indexed to 30-day Secured Overnight Financing Rate ("SOFR"), which was 5.3% as of March 31, 2024. If applicable, paid-in-kind interest rates are noted separately from the cash interest rate. Certain securities are subject to an interest rate floor. The cash interest rate is the greater of the floor or reference rate plus a spread. Due dates represent the contractual maturity date.

(C)Security is non-income producing.

(D)Category percentages represent the fair value of each category and subcategory as a percentage of net assets as of March 31, 2024.

(E)Unless indicated otherwise, all of our investments are valued using Level 3 inputs within the Financial Accounting Standards Board ("FASB") Accounting Standards Codification ("ASC") Topic 820, "Fair Value Measurements and Disclosures" ("ASC 820") fair value hierarchy. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.

(F)Where applicable, aggregates all shares of a class of stock owned without regard to specific series owned within such class (some series of which may or may not be voting shares) or aggregates all warrants to purchase shares of a class of stock owned without regard to specific series of such class of stock such warrants allow us to purchase.

(G)Debt security is on non-accrual status.

(H)Represents the principal balance, presented in thousands, for debt investments and the number of shares/units held for equity investments. Warrants are represented as a percentage of ownership, as applicable.

(I)Fair value was based on internal yield analysis or on estimates of value submitted by a third-party valuation firm. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.

(J)Fair value was based on the total enterprise value of the portfolio company, which is generally allocated to the portfolio company’s securities in order of their relative priority in the capital structure. Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.

(K)One of our affiliated funds, Gladstone Capital Corporation, co-invested with us in this portfolio company pursuant to an exemptive order granted by the U.S. Securities and Exchange Commission.

(L)Non-Control/Non-Affiliate investments, as defined by the 1940 Act, are those that are neither Control nor Affiliate investments and in which we own less than 5.0% of the issued and outstanding voting securities.

(M)Affiliate investments, as defined by the 1940 Act, are those that are not Control investments and in which we own, with the power to vote, between and inclusive of 5.0% and 25.0% of the issued and outstanding voting securities.

(N)Control investments, as defined by the 1940 Act, are those where we have the power to exercise a controlling influence over the management or policies of the portfolio company, which may include owning, with the power to vote, more than 25.0% of the issued and outstanding voting securities.

(O)Our investment in Funko was valued using Level 2 inputs within the ASC 820 fair value hierarchy. Our common units in Funko are convertible into class A common stock in Funko, Inc. upon meeting certain requirements. Fair value was based on the closing market price of shares of Funko, Inc. as of the reporting date, less a discount for lack of marketability. Funko, Inc. is traded on the Nasdaq Global Select Market under the trading symbol “FNKO.” Refer to Note 3—Investments in the accompanying Notes to Consolidated Financial Statements for additional information.

(P)Debt security is subject to an interest rate ceiling.

(Q)Fair value was based on the expected exit or payoff amount, where such event has occurred or is expected to occur imminently.

(R)Cumulative gross unrealized appreciation for federal income tax purposes is $180.5 million; cumulative gross unrealized depreciation for federal income tax purposes is $115.8 million. Cumulative net unrealized appreciation is $64.7 million, based on a tax cost of $855.8 million.