FIDUS INVESTMENT Corp Debt Disclosure

Note 6. Debt

Revolving Credit Facility: On June 16, 2014, FIC entered into a senior secured revolving credit agreement (as amended from time to time, the “Revolving Credit Agreement” and the senior secured revolving credit facility thereunder, the “Revolving Credit Facility”) with ING Capital LLC (“ING”), as the administrative agent, collateral agent, and lender. The Revolving Credit Facility was secured by certain portfolio investments held by the Company, except for the assets held by the SBIC Funds.

Concurrently with entering into the SPV Credit Agreement (as described below), on October 16, 2025, the Company terminated in full (i) the Revolving Credit Agreement and (ii) the amended and restated guarantee, pledge and security agreement, dated as of April 24, 2019 (as amended from time to time, the “Guarantee and Security Agreement”), by and among the Company, as borrower, the subsidiary guarantors party thereto, ING, as revolving administrative agent, each financing agent and designated indebtedness holder party thereto, and ING, as collateral agent. The Revolving Credit Agreement and the Guarantee and Security Agreement were terminated concurrently with the satisfaction of all obligations and liabilities of the Company to the lending parties thereunder, including, without limitation, payments of principal and interest, other fees, breakage costs and other amounts owing to the lending parties.

The total commitments available under the Revolving Credit Facility was $140.0 million. Under the Revolving Credit Agreement, the Company paid a commitment fee that varied depending on the size of the unused portion of the Revolving Credit Facility: 2.500% to 2.675% per annum on the unused portion of the Revolving Credit Facility at or below 35% of the commitments and 0.50% per annum on any remaining unused portion of the Revolving Credit Facility between the total commitments and the 35% minimum utilization.

SPV Credit Facility: On October 16, 2025, the Company entered into a credit and security agreement (the “SPV Credit Agreement”) relating to a special purpose vehicle credit facility (the “SPV Credit Facility” and together with the Revolving Credit Facility, the “Credit Facilities”) by and among FIC Funding, LLC (the “SPV”), as borrower, the Company, as servicer and equityholder, ING, as administrative agent (the “Administrative Agent”) and lead arranger, Western Alliance Trust Company, N.A., as custodian, collateral agent, and collateral administrator, and the lenders from time to time parties thereto. The SPV Credit Facility is secured primarily by a pledge of 100% of the equity interest in the SPV held by the Company and the SPV’s assets, which consist of certain bank loans or securities. The SPV Credit Facility provides for $175,000 of initial commitments, and has an accordion feature that allows for an increase of the total commitments to up to $250,000, subject to certain conditions (including the consent of the Administrative Agent). On December 22, 2025, the total commitments available under the SPV Credit Facility was increased from $175,000 to $225,000 pursuant to the accordion feature. The SPV Credit Facility has a reinvestment period until October 16, 2029 and matures on October 16, 2030. The advances under the SPV Credit Facility bear interest, subject to the Company’s election, on a per annum basis equal to one-month Term SOFR plus 0.11448% and an applicable margin ranging from 2.500% to 2.675%. The SPV pays a commitment fee that varies depending on the size of the unused portion of the SPV Credit Facility: (1) if the utilized portion of the aggregate commitments as of the close of business on such day is less than 35% of the aggregate commitments (the “Minimum Utilization Amount”), the commitment fee will equal the sum of (a) the then applicable margin multiplied by (i) the Minimum Utilization Amount minus (ii) the aggregate outstanding principal balance of the advances on such day and (b) 0.50% multiplied by 65% of the commitments and (2) if the utilized portion of the aggregate commitments is greater than or equal to the Minimum Utilization Amount, the commitment fee will equal 0.50% multiplied by the unused amount of the commitments.

Amounts available to borrow under the SPV Credit Facility are subject to a minimum borrowing/collateral base that applies an advance rate to certain investments held by the SPV. The SPV is subject to limitations with respect to the investments securing the SPV Credit Facility, including, but not limited to, restrictions on sector concentrations, loan size, payment frequency and status and collateral interests, as well as restrictions on portfolio company leverage, which may also affect the borrowing base and therefore amounts available to borrow. The SPV Credit Facility is secured primarily by a pledge of 100% of the equity interest in the SPV held by the Company and the SPV’s assets, which consist of certain bank loans or securities. As of December 31, 2025, the remaining available borrowing base on the SPV Credit Facility was $102,208.

The Company has made customary representations and warranties and is required to comply with various covenants, reporting requirements and other customary requirements. These covenants are subject to important limitations and exceptions that are described in the documents governing the SPV Credit Facility. As of December 31, 2025, the Company was in compliance in all material respects with the terms of the SPV Credit Agreement.

SBA debentures: The SBIC Funds use debenture leverage provided through the SBA to fund a portion of its investment purchases.

Under the SBA debenture program, the SBA commits to purchase debentures issued by SBICs; such debentures have 10-year terms with the entire principal balance due at maturity and are guaranteed by the SBA. Interest on SBA debentures is payable semi-annually on March 1 and September 1. As of December 31, 2025 and 2024, approved and unused SBA debenture commitments were $84,000 and $175,000, respectively. The SBA may limit the amount that may be drawn each year under any SBA debenture commitments, and each issuance of leverage is conditioned on such SBIC Fund’s full compliance, as determined by the SBA, with the terms and conditions under SBA regulations.

Notes: The term “Notes” refers to collectively to the January 2026 Notes, the November 2026 Notes and the March 2030 Notes. The Notes are the Company’s direct unsecured obligations, rank pari passu with the Company’s other outstanding and future unsecured unsubordinated indebtedness and are effectively or structurally subordinated to all of the Company’s existing and future secured indebtedness, including borrowings under the SPV Credit Facility and the SBA debentures.

On December 23, 2020, the Company closed the offering of $125,000 in aggregate principal amount of its 4.75% notes due 2026 (the “January 2026 Notes”). The total net proceeds to the Company from the January 2026 Notes, based on a public offering price of 100.00% of par, after deducting underwriting discounts of $2,500 and offering expenses of $366, were $122,134. The maturity date of the January 2026 Notes was January 31, 2026 and the January 2026 Notes bore interest at a rate of 4.75%. On May 21, 2025, the Company redeemed $25,000 of the $125,000 aggregate principal amount on the January 2026 Notes, resulting in a realized loss on extinguishment of debt of $75. On November 3, 2025, the Company fully redeemed the remaining $100,000 in aggregate principal amount of the January 2026 Notes, resulting in a realized loss on extinguishment of debt of $112.

On October 8, 2021, the Company closed the offering of $125,000 in aggregate principal amount of its 3.50% notes due 2026 (the “November 2026 Notes”). The total net proceeds to the Company from the November 2026 Notes, based on a public offering price of 99.996% of par, after deducting underwriting discounts of $2,500 and offering expenses of $318, were $122,177. The November 2026 Notes will mature on November 15, 2026 and bear interest at a rate of 3.50%. The November 2026 Notes may be redeemed in whole or

On March 19, 2025, the Company closed the offering of $100,000 in aggregate principal amount of its 6.75% notes due 2030 (the “Existing March 2030 Notes”). The total net proceeds to the Company from the Existing March 2030 Notes, based on a public offering price of 99.29954% of par, after deducting underwriting discounts of $2,000 and offering expenses of $354, were $96,946. On October 3, 2025, the Company issued an additional $100,000 in aggregate principal amount of the 6.75% notes due 2030 (the “Additional March 2030 Notes” and together with the Existing March 2030 Notes, the “March 2030 Notes”). The total net proceeds to us from the Additional March 2030 Notes, based on a public offering price of 100.705% of par, after deducting underwriting discounts of $1,500 and offering expenses of $329, was $98,876. The Additional March 2030 Notes are treated as a single series with the Existing March 2030 Notes under the indenture and have the same terms as the Initial March 2030 Notes (except the issue date, the offering price and the initial interest payment date). Upon issuance of the Additional March 2030 Notes, the outstanding aggregate principal amount of the March 2030 Notes was $200,000. The March 2030 Notes will mature on March 19, 2030 and bear interest at a rate of 6.75%. The March 2030 Notes may be redeemed in whole or in part at any time or from time to time at our option subject to a make whole provision if redeemed before September 19, 2029 (the date falling six months prior to maturity) and at par thereafter. Interest on the March 2030 Notes is payable on March 19 and September 19 of each year. The Company does not intend to list the March 2030 Notes on any securities exchange or automated dealer quotation system.

Secured Borrowing

As of December 31, 2025 and December 31, 2024, the carrying value of secured borrowings totaled $12,000 and $13,674, respectively, and the fair value of the associated loans included in investments was $11,995 and $13,505, respectively. These secured borrowings were created as a result of our completion of partial loan sales of certain unitranche loan assets that did not meet the definition of a “participating interest” as defined in ASC 860 (see Note 2. Significant Accounting Policies - Partial loan and equity sales for more information). As a result, sale treatment was not permitted and these partial loan sales were treated as secured borrowings. The weighted average interest rate on our secured borrowings was approximately 7.9% and 8.6% as of December 31, 2025 and 2024, respectively.

Senior Securities

As of December 31, 2025, and December 31, 2024, the aggregate amount outstanding of the senior securities (including secured borrowings) issued by the Company was $420,850 and $308,674, respectively, for which our asset coverage was 276.3% and 312.4%, respectively. The SBA debentures are excluded from the definition “senior securities” in the asset coverage requirement applicable to the Company under the 1940 Act pursuant to exemptive relief granted to us by the SEC on June 30, 2014. The asset coverage ratio for a class of senior securities representing indebtedness is calculated as the Company’s consolidated total assets, less all liabilities and indebtedness not represented by senior securities, divided by total senior securities representing indebtedness.

Interest and Financing Expenses

Realized Losses on Extinguishment of Debt

During the years ended December 31, 2025, 2024, and 2023, the Company prepaid $28,500, $35,000, and $5,000 of SBA debentures, respectively, which were scheduled to mature on dates ranging from 2025 to 2033. During the year ended December 31, 2025, the Company redeemed $125,000 in aggregate principal amount of the issued and outstanding January 2026 Notes. On October 16, 2025, the Company terminated the Revolving Credit Facility with ING. As a result of the foregoing, the Company recognized realized losses on extinguishment of debt of $899, $521, and $23 respectively, equal to the write-off of the related unamortized deferred financing costs, during the years ended December 31, 2025, 2024, and 2023.

Deferred Financing Costs

Unamortized deferred financing costs are presented as a direct offset to the SBA debentures, the Revolving Credit Facility, the SPV Credit Facility and the Notes liabilities on the consolidated statements of assets and liabilities. The following table summarizes the outstanding debt net of unamortized deferred financing costs as of December 31, 2025 and 2024: