Filed Pursuant to Rule 424(b)(2)
Registration No. 333-253525

PROSPECTUS SUPPLEMENT

(To Prospectus Dated May 3, 2021)

$125,000,000

3.50% Notes due 2026

We are an externally managed, closed-end, non-diversified management investment company that has elected to be regulated as a business development company (“BDC”) under the Investment Company Act of 1940, as amended (the “1940 Act”). Our investment objective is to provide attractive risk-adjusted returns by generating both current income from our debt investments and capital appreciation from our equity related investments. Our investment strategy includes partnering with business owners, management teams and financial sponsors by providing customized financing for ownership transactions, recapitalizations, strategic acquisitions, business expansion and other growth initiatives. We generally invest in securities that would be rated below investment grade if they were rated by rating agencies. Below investment grade securities, which are often referred to as “high yield” or “junk,” have speculative characteristics with respect to the issuer’s capacity to pay interest and repay principal.

Fidus Investment Advisors, LLC serves as our investment adviser and as our administrator.

We are offering $125.0 million in aggregate principal amount of 3.50% notes due 2026 (the “Notes”). The Notes will mature on November 15, 2026. We will pay interest on the Notes on May 15 and November 15 of each year, beginning May 15, 2022. We may redeem the Notes in whole or in part at any time or from time to time, at the redemption price set forth under the section titled “Description of the Notes—Optional Redemption” in this prospectus supplement. In addition, holders of the Notes can require us to repurchase some or all of the Notes at a purchase price equal to 100% of their principal amount, plus accrued and unpaid interest to, but not including, the repurchase date, upon the occurrence of a Change of Control Repurchase Event (as defined herein). The Notes will be issued in minimum denominations of $2,000 and integral multiples of $1,000 in excess thereof.

The Notes will be our direct unsecured obligations and rank equal in right of payment with all outstanding and future unsecured, unsubordinated indebtedness issued by us. Because the Notes will not be secured by any of our assets, they will be effectively subordinated to all of our existing and future secured indebtedness (or any indebtedness that is initially unsecured as to which we subsequently grant a security interest) to the extent of the value of the assets securing such indebtedness. The Notes will be structurally subordinated to all existing and future indebtedness and other obligations of any of our subsidiaries because the Notes will be obligations exclusively of Fidus Investment Corporation and not of any of our subsidiaries. The Notes will be senior in right of payment to any future outstanding series of our preferred stock. None of our subsidiaries is a guarantor of the Notes and the Notes will not be required to be guaranteed by any subsidiary we may acquire or create in the future. As of June 30, 2021, we had $360.1 million of debt outstanding, of which $346.6 million was unsecured and unsubordinated indebtedness and $13.5 million was secured indebtedness. None of our current indebtedness will be subordinated to the Notes.

We do not intend to list the Notes on any securities exchange or automated dealer quotation system.

This prospectus supplement, the accompanying prospectus, any free writing prospectus, and the documents incorporated by reference in this prospectus supplement and the accompanying prospectus contain important information you should know before investing in the Notes, including information about risks. Please read these documents before you invest and retain them for future reference. Additional information about us, including our annual, quarterly and current reports and proxy statements, has been filed with the Securities and Exchange Commission (the “SEC”), and can be accessed free of charge at its website at www.sec.gov. This information is also available free of charge by contacting us at 1603 Orrington Avenue, Suite 1005, Evanston, Illinois 60201, Attention: Investor Relations, or by calling us at (847) 859-3940 or on our website at www.fdus.com, which, except for the documents incorporated by reference into this prospectus supplement and the accompanying prospectus, is not part of this prospectus supplement nor the accompanying prospectus. See “Available Information” on page S-41 of this prospectus supplement.

Investing in the Notes involves a high degree of risk, including the risk of leverage. Before buying any Notes, you should read the material risks described in the “Supplementary Risk Factors” section beginning on page S-10 of this prospectus supplement and “Risk Factors” beginning on page 11 of the accompanying prospectus and in our most recent Annual Report on Form 10-K, our most recent Quarterly Report on Form 10-Q, as well as any of our subsequent SEC filings.

THE NOTES ARE NOT DEPOSITS OR OTHER OBLIGATIONS OF A BANK AND ARE NOT INSURED BY THE FEDERAL DEPOSIT INSURANCE CORPORATION OR ANY OTHER GOVERNMENT AGENCY.

Neither the SEC nor any state securities commission, nor any other regulatory body, has approved or disapproved of these securities or determined if this prospectus supplement or the accompanying prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

Delivery of the Notes in book-entry form only through The Depository Trust Company (“DTC”) will be made on or about October 8, 2021.

Raymond James

Keefe, Bruyette & Woods

               A Stifel Company

The date of this prospectus supplement is October 1, 2021

TABLE OF CONTENTS

Prospectus Supplement

Prospectus

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ABOUT THIS PROSPECTUS SUPPLEMENT

This document is in two parts. The first part is this prospectus supplement, which describes the specific details regarding this offering of Notes and also adds to and updates information contained in the accompanying prospectus and the documents incorporated by reference into this prospectus supplement and the accompanying prospectus. The second part is the accompanying prospectus, which provides general information about us and the securities we may offer from time to time, some of which may not apply to this offering. To the extent the information contained in this prospectus supplement differs from the information contained in the accompanying prospectus or the information included in any document filed prior to the date of this prospectus supplement and incorporated by reference in this prospectus supplement and the accompanying prospectus, the information in this prospectus supplement shall control. Generally, when we refer to this “prospectus”, we are referring to both this prospectus supplement and the accompanying prospectus combined, together with any free writing prospectus that we have authorized for use in connection with this offering.

YOU SHOULD RELY ONLY ON THE INFORMATION CONTAINED IN THIS PROSPECTUS SUPPLEMENT AND THE ACCOMPANYING PROSPECTUS, INCLUDING THE DOCUMENTS INCORPORATED BY REFERENCE HEREIN AND THEREIN, AND ANY FREE WRITING PROSPECTUS PREPARED BY, OR ON BEHALF OF, US THAT RELATES TO THIS OFFERING OF THE NOTES. WE HAVE NOT, AND THE UNDERWRITERS HAVE, AUTHORIZED ANY OTHER PERSON TO PROVIDE YOU WITH DIFFERENT OR ADDITIONAL INFORMATION. IF ANYONE PROVIDES YOU WITH DIFFERENT OR ADDITIONAL INFORMATION, YOU SHOULD NOT RELY ON IT. WE ARE NOT, AND THE UNDERWRITERS ARE NOT, MAKING AN OFFER TO SELL THESE NOTES IN ANY JURISDICTION WHERE THE OFFER OR SALE IS NOT PERMITTED. YOU SHOULD ASSUME THAT THE INFORMATION APPEARING IN THIS PROSPECTUS SUPPLEMENT AND THE ACCOMPANYING PROSPECTUS, INCLUDING THE DOCUMENTS INCORPORATED BY REFERENCE HEREIN AND THEREIN, AND ANY FREE WRITING PROSPECTUS PREPARED BY OR ON BEHALF OF US THAT RELATES TO THIS OFFERING OF NOTES IS ACCURATE ONLY AS OF ITS RESPECTIVE DATE, REGARDLESS OF THE TIME OF DELIVERY OF THIS PROSPECTUS SUPPLEMENT, THE ACCOMPANYING PROSPECTUS, ANY FREE WRITING PROSPECTUS OR ANY SALES OF THE NOTES. OUR BUSINESS, FINANCIAL CONDITION, RESULTS OF OPERATIONS AND PROSPECTS MAY HAVE CHANGED SINCE THOSE DATES.

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SUPPLEMENTARY RISK FACTORS

Investing in the Notes involves a number of significant risks. You should carefully consider the risks described below, together with all of the risks and uncertainties described in the section titled “Risk Factors” in the accompanying prospectus, our most recent Annual Report on Form 10-K, our most recent Quarterly Report on Form 10-Q, as well as in subsequent filings with the SEC, which are or will be incorporated by reference into this prospectus supplement and the accompanying prospectus in their entirety, and other information in this prospectus supplement, the accompanying prospectus, the documents incorporated by reference in this prospectus supplement and the accompanying prospectus, and any free writing prospectus that we may authorize for use in connection with this offering. The risks and uncertainties described below are not the only ones facing us. Additional risks and uncertainties not presently known to us, or not presently deemed material by us, may also impair our operations and performance. If any of the following risks actually occur, our business, financial condition or results of operations could be materially adversely affected. If that happens, our net asset value and the trading price of our securities could decline and you may lose all or part of your investment. Please also read carefully the section titled “Special Note Regarding Forward-Looking Statements” in this prospectus supplement.

Risks Related to the Offering

The Notes will be unsecured and therefore will be effectively subordinated to any secured indebtedness we have currently incurred or may incur in the future and will rank pari passu with, or equal to, all outstanding and future unsecured indebtedness issued by and us and our general liabilities (total liabilities, less debt).

The Notes will not be secured by any of our assets or any of the assets of any of our subsidiaries. As a result, the Notes will be effectively subordinated to any secured indebtedness we or our subsidiaries have outstanding as of the date of this prospectus supplement (including under our Credit Facility) or that we or our subsidiaries may incur in the future (or any indebtedness that is initially unsecured as to which we subsequently grant security) to the extent of the value of the assets securing such indebtedness. In any liquidation, dissolution, bankruptcy or other similar proceeding, the holders of any of our existing or future secured indebtedness and the secured indebtedness of our subsidiaries may assert rights against the assets pledged to secure that indebtedness in order to receive full payment of their indebtedness before the assets may be used to pay other creditors, including the holders of the Notes. In addition, the Notes will rank pari passu with, or equal to, all outstanding and future unsecured, unsubordinated indebtedness issued by us and our general liabilities (total liabilities, less debt). As of September 30, 2021, we had $40.0 million in outstanding indebtedness under our Credit Facility. The indebtedness under the Credit Facility is effectively senior to the Notes to the extent of the value of the assets securing such indebtedness.

The Notes will be structurally subordinated to the indebtedness and other liabilities of our subsidiaries.

The Notes will be obligations exclusively of Fidus Investment Corporation, and not of any of our subsidiaries. None of our subsidiaries will be a guarantor of the Notes, and the Notes will not be required to be guaranteed by any subsidiary we may acquire or create in the future. Any assets of our subsidiaries will not be directly available to satisfy the claims of our creditors, including holders of the Notes. Except to the extent we are a creditor with recognized claims against our subsidiaries, all claims of creditors of our subsidiaries will have priority over our equity interests in such entities (and therefore the claims of our creditors, including holders of the Notes) with respect to the assets of such entities. Even if we are recognized as a creditor of one or more of these entities, our claims would still be effectively subordinated to any security interests in the assets of any such entity and to any indebtedness or other liabilities of any such entity senior to our claims. Consequently, the Notes will be structurally subordinated to all indebtedness and other liabilities, including trade payables, of any of our existing or future subsidiaries, including the Funds. As of September 30, 2021, our subsidiaries had total indebtedness outstanding of $95.0 million. Certain of these entities currently serve as guarantors under our Credit Facility,

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and in the future our subsidiaries may incur substantial additional indebtedness, all of which is and would be structurally senior to the Notes.

The indenture under which the Notes will be issued contains limited protection for holders of the Notes.

The indenture under which the Notes will be issued offers limited protection to holders of the Notes. The terms of the indenture and the Notes do not restrict our or any of our subsidiaries’ ability to engage in, or otherwise be a party to, a variety of corporate transactions, circumstances or events that could have an adverse impact on your investment in the Notes. In particular, the terms of the indenture and the Notes will not place any restrictions on our or our subsidiaries’ ability to:

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Furthermore, the terms of the indenture and the Notes do not protect holders of the Notes in the event that we experience changes (including significant adverse changes) in our financial condition, results of operations or credit ratings, if any, as they do not require that we or our subsidiaries adhere to any financial tests or ratios or specified levels of net worth, revenues, income, cash flow, or liquidity.

Our ability to recapitalize, incur additional debt (including additional debt that matures prior to the maturity of the Notes) and take a number of other actions that are not limited by the terms of the Notes may have important consequences for you as a holder of the Notes, including making it more difficult for us to satisfy our obligations with respect to the Notes or negatively affecting the market value of the Notes.

Other debt we issue or incur in the future could contain more protections for its holders than the indenture and the Notes, including additional covenants and events of default. The issuance or incurrence of any such debt with incremental protections could affect the market for, trading levels, and prices of the Notes.

There is no active trading market for the Notes. If an active trading market does not develop for the Notes, you may not be able to sell them.

The Notes are a new issue of debt securities for which there currently is no trading market. We do not intend to list the Notes on any securities exchange or for quotation of the Notes on any automated dealer quotation system. If the Notes are traded after their initial issuance, they may trade at a discount to their initial offering price depending on prevailing interest rates, the market for similar securities, our credit ratings, our financial condition, performance and prospects, general economic conditions, including the impact of COVID-19, or other relevant factors. Although certain of the underwriters have informed us that they intend to make a market in the Notes, they are not obligated to do so, and the underwriters may discontinue any market-making in the Notes at any time at their sole discretion. Accordingly, we cannot assure you that a liquid trading market will develop or be maintained for the Notes, that you will be able to sell your Notes at a particular time or that the price you receive when you sell will be favorable. To the extent an active trading market does not develop, the liquidity and trading price for the Notes may be harmed. Accordingly, you may be required to bear the financial risk of an investment in the Notes for an indefinite period of time.

If we default on our obligations to pay our other indebtedness, we may not be able to make payments on the Notes.

Any default under the agreements governing our indebtedness, including a default under the Credit Facility, the indenture governing our February 2024 Notes, the indenture governing our November 2024 Notes, the indenture governing our 2026 Notes or other indebtedness to which we may be a party, that is not waived by the required lenders or holders, and the remedies sought by the lenders or holders of such indebtedness could make us unable to pay principal, premium, if any, and interest on the Notes and substantially decrease the market value of the Notes. If we are unable to generate sufficient cash flow and are otherwise unable to obtain funds necessary to meet required payments of principal, premium, if any, and interest on our indebtedness, or if we otherwise fail to comply with the various covenants, including financial and operating covenants, as applicable, in the instruments governing our indebtedness, we could be in default under the terms of the agreements governing such indebtedness. In the event of such default, the holders of such indebtedness could elect to declare all the funds borrowed thereunder to be due and payable, together with accrued and unpaid interest, the lenders under the Credit Facility or other debt we may incur in the future could elect to terminate their commitments, cease making further loans and institute foreclosure proceedings against our assets, and we could be forced into bankruptcy or liquidation. If our operating performance declines, we may in the future need to refinance or restructure our debt, including the Notes, sell assets, reduce or delay capital investments, seek to raise additional capital or seek to obtain waivers from the required lenders under the Credit Facility or other debt that we may incur in the future to avoid being in default. If we are unable to implement one or more of these alternatives, we may not be able to meet our payment obligations under the Notes or our other debt. If we breach our covenants under the Credit Facility or our other debt and seek a waiver, we may not be able to obtain a waiver from the required lenders or holders thereof. If this occurs, we would be in default under the Credit Facility or other debt, the lenders or

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holders could exercise their rights as described above, and we could be forced into bankruptcy or liquidation. If we are unable to repay debt, lenders having secured obligations, including the lenders under the Credit Facility, could proceed against the collateral securing the debt. Because each of the Credit Facility and the indenture governing the 2026 Notes has, the indenture governing the Notes will have, and any future credit facilities will likely have, customary cross-default provisions, if the indebtedness under the Notes, the 2026 Notes, the Credit Facility or under any future credit facility is accelerated, we may be unable to repay or finance the amounts due.

We may choose to redeem the Notes when prevailing interest rates are relatively low.

The Notes are redeemable in whole or in part upon certain conditions at any time or from time to time at our option. We may choose to redeem the Notes from time to time, especially if prevailing interest rates are lower than the rate borne by the Notes. If prevailing rates are lower at the time of redemption, and we redeem the Notes, you likely would not be able to reinvest the redemption proceeds in a comparable security at an effective interest rate as high as the interest rate on the Notes being redeemed.

We may not be able to repurchase the Notes upon a Change of Control Repurchase Event.

We may not be able to repurchase the Notes upon a Change of Control Repurchase Event because we may not have sufficient funds. We would not be able to borrow under our Credit Facility to finance such a repurchase of the Notes, and we expect that any future credit facility would have similar limitations. Upon a Change of Control Repurchase Event, holders of the Notes may require us to repurchase for cash some or all of the Notes at a repurchase price equal to 100% of the aggregate principal amount of the Notes being repurchased, plus accrued and unpaid interest to, but not including, the repurchase date. The terms of our Credit Facility also provide that certain change of control events will constitute an event of default thereunder entitling the lenders to accelerate any indebtedness outstanding under our Credit Facility at that time and to terminate our Credit Facility. Our and our subsidiaries’ future financing facilities may contain similar restrictions and provisions. Our failure to purchase such tendered Notes upon the occurrence of such Change of Control Repurchase Event would cause an event of default under the indenture governing the Notes and a cross-default under the agreements governing certain of our other indebtedness, including under the indenture governing the 2026 Notes and agreements governing the Credit Facility, which may result in the acceleration of such indebtedness requiring us to repay such indebtedness immediately. If the holders of the Notes or the 2026 Notes exercise their respective right to require us to repurchase any Notes or any 2026 Notes, respectively, upon a Change of Control Repurchase Event (as defined in the relevant indenture), the financial effect of any such repurchase could cause a default under our current and future debt instruments, even if the Change of Control Repurchase Event itself would not cause default. If a Change of Control Repurchase Event were to occur, we may not have sufficient funds to repay any such accelerated indebtedness. See “Description of the Notes—Offer to Repurchase Upon a Change of Control Repurchase Event” in this prospectus supplement for more information.

A downgrade, suspension or withdrawal of the credit rating assigned by a rating agency to us or the Notes or change in the debt markets could cause the liquidity or market value of the Notes to decline significantly.

Our credit ratings are an assessment by rating agencies of our ability to pay our debts when due. Consequently, real or anticipated changes in our credit ratings will generally affect the market value of the Notes. These credit ratings may not reflect the potential impact of risks relating to the structure or marketing of the Notes. Credit ratings are not a recommendation to buy, sell or hold any security, and may be revised or withdrawn at any time by the issuing organization in its sole discretion. Neither we nor any underwriter undertakes any obligation to maintain our credit ratings or to advise holders of Notes of any changes in our credit ratings. There can be no assurance that our credit ratings will remain for any given period of time or that such credit ratings will not be lowered or withdrawn entirely by the rating agencies if in their judgment future circumstances relating to the basis of the credit ratings, such as adverse changes in our Company, so warrant. The conditions of the financial markets and prevailing interest rates have fluctuated in the past and are likely to fluctuate in the future, which could have an adverse effect on the market prices of the Notes.

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SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

Information included or incorporated by reference in this prospectus supplement, the accompanying prospectus and in any free writing prospectus relating to this offering of the Notes may contain “forward-looking statements.” These forward-looking statements are not historical facts, but rather are based on current expectations, estimates and projections about us, our current and prospective portfolio investments, our industry, our beliefs, and our assumptions. Although we believe that the assumptions on which these forward-looking statements are based are reasonable, any of those assumptions could prove to be inaccurate, and as a result, the forward-looking statements based on those assumptions also could be inaccurate. Important assumptions include our ability to originate new loans and investments, certain margins and levels of profitability and the availability of additional capital. In light of these and other uncertainties, the inclusion of a projection or forward-looking statement in this prospectus should not be regarded as a representation by us that our plans and objectives will be achieved. Words such as “anticipates,” “expects,” “intends,” “plans,” “will,” “may,” “continue,” “believes,” “seeks,” “estimates,” “would,” “should,” “targets,” “projects” and variations of these words and similar expressions are intended to identify forward-looking statements. The forward-looking statements contained in this prospectus supplement, the accompanying prospectus, and in any free writing prospectus relating to this offering of Notes involve risks and uncertainties, including statements as to:

These statements are not guarantees of future performance and are subject to risks, uncertainties and other factors, some of which are beyond our control and difficult to predict and could cause actual results to differ materially from those expressed or forecasted in the forward-looking statements, including without limitation:

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We caution readers not to place undue reliance on any such forward-looking statements, which speak only as of the date made. Actual results could differ materially from those anticipated in our forward-looking statements and future results could differ materially from our historical performance. Except as required by law, we undertake no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, after the date of this prospectus supplement. Although we undertake no obligation to revise or update any forward-looking statements, whether as a result of new information, future events, or otherwise, you are advised to consult any additional disclosures that we may make directly to you or through reports or other documents we have filed, or in the future may file, with the SEC, including subsequent annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K.

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USE OF PROCEEDS

We estimate that the net proceeds we receive from the sale of $125,000,000 aggregate principal amount of the Notes in this offering will be $122,095,000, based on a public offering price of 99.996% of par, after deducting the underwriting discount of $2,500,000 payable by us and estimated offering expenses of approximately $400,000 payable by us.

We intend to use the net proceeds from this offering to redeem all of the outstanding February 2024 Notes and November 2024 Notes (callable on November 1, 2021) and repay a portion of the amount outstanding under the Credit Facility. However, we may re-borrow under our Credit Facility and use such borrowings to invest in lower middle-market companies in accordance with our investment objective and strategies and for working capital and general corporate purposes. As of September 30, 2021, we had $19,000,000 and $63,250,000 in aggregate principal amount of indebtedness outstanding under the February 2024 Notes and the November 2024 Notes, respectively, and we had $40.0 million of indebtedness outstanding under our Credit Facility. Our Credit Facility matures on April 24, 2023, and borrowings under the Credit Facility currently bear interest, at our election, at a rate per annum equal to (a) 3.00% (or 2.75% if certain conditions are satisfied, including if (x) no equity interests are included in the borrowing base, (y) the contribution to the borrowing base of eligible portfolio investments that are performing first lien bank loans is greater than or equal to 35%, and (z) the contribution to the borrowing base of eligible portfolio investments that are performing first lien bank loans, performing last out loans, or performing second lien loans is greater than or equal to 60%) plus the one, two, three or six month adjusted LIBOR, as applicable, or (b) 2.00% (or 1.75% if the above conditions are satisfied) plus the highest of (A) a prime rate, (B) the federal funds effective rate plus 0.5%, (C) the three month adjusted LIBOR plus 1.0%, and (D) zero.

An affiliate of ING Financial Markets LLC, one of the underwriters in this offering, acts as a lender under the Credit Facility. As described above, we intend to use a portion of the net proceeds from this offering to repay a portion of the outstanding indebtedness under the Credit Facility. As a result, such affiliate of ING Financial Markets LLC may receive a portion of the net proceeds from this offering through the repayment of such borrowings. See “Underwriting (Conflicts of Interest) — Conflicts of Interest” in this prospectus supplement.

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CAPITALIZATION

The following table sets forth our capitalization as of June 30, 2021:

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DESCRIPTION OF THE NOTES

The Notes will be issued under a base indenture dated as of February 2, 2018 and a fifth supplemental indenture thereto, to be entered into between us and U.S. Bank National Association, as trustee. We refer to the indenture and the fifth supplemental indenture collectively as the “indenture” and to U.S. Bank National Association as the “trustee.” The Notes are governed by the indenture, as required by federal law for all bonds and notes of companies that are publicly offered. An indenture is a contract between us and the financial institution acting as trustee on your behalf, and is subject to and governed by the Trust Indenture Act of 1939, as amended. The trustee has two main roles. First, the trustee can enforce your rights against us if we default. There are some limitations on the extent to which the trustee acts on your behalf, described in the second paragraph under “—Events of Default—Remedies if an Event of Default Occurs” below. Second, the trustee performs certain administrative duties for us with respect to the Notes.

This section includes a summary description of the material terms of the Notes and the indenture. Because this section is a summary, however, it does not describe every aspect of the Notes and the indenture. We urge you to read the indenture because it, and not this description, defines your rights as a holder of the Notes. The base indenture has been attached as an exhibit to the registration statement of which this prospectus supplement is a part and the fifth supplemental indenture will be attached as an exhibit to a Current Report on Form 8-K, in each case, as filed with the SEC. See “Available Information” in this prospectus supplement for information on how to obtain a copy of the indenture.

General

The Notes will mature on November 15, 2026. The principal payable at maturity will be 100% of the aggregate principal amount. The interest rate of the Notes is 3.50% per year and will be paid semi-annually in arrears on May 15 and November 15 of each year, commencing May 15, 2022, and the regular record dates for interest payments will be every May 1 and November 1, commencing May 1, 2022. If an interest payment date falls on a non-business day, the applicable interest payment will be made on the next business day and no additional interest will accrue as a result of such delayed payment. The initial interest period will be the period from and including October 8, 2021, to, but excluding, the initial interest payment date, and the subsequent interest periods will be the periods from and including an interest payment date to, but excluding, the next interest payment date or the stated maturity date, as the case may be.

We will issue the Notes in denominations of $2,000 and integral multiples of $1,000 in excess thereof. The Notes will not be subject to any sinking fund.

The indenture does not limit the amount of debt (including secured debt) that may be issued by us or our subsidiaries under the indenture or otherwise, but does contain a covenant regarding our asset coverage that would have to be satisfied at the time of our incurrence of additional indebtedness. See “—Other Covenants” and “—Events of Default” below. The indenture does not otherwise contain any financial covenants or restrict us from paying dividends or issuing or repurchasing our other securities other than as described in “—Other Covenants” below. Other than restrictions described under “—Offer to Repurchase Upon a Change of Control Repurchase Event” and “—Merger, Consolidation or Asset Sale” below, the indenture does not contain any covenants or other provisions designed to afford holders of the Notes protection in the event of a highly leveraged transaction involving us or if our credit rating declines as the result of a takeover, recapitalization, highly leveraged transaction or similar restructuring involving us that could adversely affect your investment in the Notes.

We may, without the consent of the holders of the Notes, issue additional notes under the indenture with the same terms (except for the issue date, public offering price, and if applicable, the initial interest payment date) and with the same CUSIP numbers as the Notes offered hereby in an unlimited aggregate principal amount; provided that such additional notes must be treated as part of the same issue as the Notes offered hereby for U.S. federal

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income tax purposes. In addition, we have the ability to issue indenture securities with terms different from the Notes.

We do not intend to list the Notes on any securities exchange or automated dealer quotation system.

Optional Redemption

The Notes may be redeemed in whole or in part at any time or from time to time at our option, upon not less than 30 days nor more than 60 days written notice by mail prior to the date fixed for redemption thereof, at a redemption price (as determined by us) equal to the greater of the following amounts, plus, in each case, accrued and unpaid interest to, but excluding, the redemption date: (1) 100% of the principal amount of the Notes to be redeemed or (2) the sum of the present values of the remaining scheduled payments of principal and interest (exclusive of accrued and unpaid interest to the date of redemption) on the Notes to be redeemed, discounted to the redemption date on a semi-annual basis (assuming a 360-day year consisting of twelve 30-day months) using the applicable Treasury Rate plus 50 basis points (for the avoidance of doubt, the foregoing redemption price will be calculated based on the assumption that the principal amount of the Notes was due on August 15, 2026, and that the final interest payment on the Notes was for the period from and including May 15, 2026, to but excluding August 15, 2026); provided, however, that if we redeem any Notes on or after August 15, 2026 (the date falling three months prior to the maturity date of the Notes), the redemption price for the Notes will be equal to 100% of the principal amount of the Notes to be redeemed, plus accrued and unpaid interest, if any, to, but excluding, the date of redemption; provided, further, that no such partial redemption shall reduce the portion of the principal amount of a Note not redeemed to less than $2,000.

You may be prevented from exchanging or transferring the Notes when they are subject to redemption. In case any Notes are held in certificate form and are to be redeemed in part only, the redemption notice will provide that, upon surrender of such Note, you will receive, without a charge, a new Note or Notes of authorized denominations representing the principal amount of your remaining unredeemed Notes. Any exercise of our option to redeem the Notes will be done in compliance with the indenture, the terms of our Credit Facility and, to the extent applicable, the 1940 Act.

If we redeem only some of the Notes, the trustee or, with respect to global securities, DTC will determine the method for selection of the particular Notes to be redeemed, in accordance with the indenture and the 1940 Act, to the extent applicable. Unless we default in payment of the redemption price, on and after the date of redemption, interest will cease to accrue on the Notes called for redemption.

For purposes of calculating the redemption price in connection with the redemption of the Notes, on any redemption date, the following terms have the meanings set forth below:

“Comparable Treasury Issue” means the United States Treasury security selected by the Reference Treasury Dealer as having a maturity comparable to the remaining term of the Notes to be redeemed that would be utilized, at the time of selection and in accordance with customary financing practice, in pricing new issues of corporate debt securities of comparable maturity to the remaining term of the Notes being redeemed.

“Comparable Treasury Price” means (1) the average of the Reference Treasury Dealer Quotations for the redemption date, after excluding the highest and lowest Reference Treasury Dealer Quotations, or (2) if the Quotation Agent obtains fewer than four such Reference Treasury Dealer Quotations, the average of all such quotations.

“Quotation Agent” means a Reference Treasury Dealer selected by us.

“Reference Treasury Dealer” means each of any four primary U.S. government securities dealers selected by us.

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“Reference Treasury Dealer Quotations” means, with respect to each Reference Treasury Dealer and any redemption date, the average, as determined by the Quotation Agent, of the bid and asked prices for the Comparable Treasury Issue (expressed in each case as a percentage of its principal amount) quoted in writing to the Quotation Agent by such Reference Treasury Dealer at 3:30 p.m. New York time on the third business day preceding such redemption date. All determinations made by any Reference Treasury Dealer, including the Quotation Agent, with respect to determining the redemption price will be final and binding absent manifest error.

“Treasury Rate” means, with respect to any redemption date, the rate per annum equal to the semi-annual equivalent yield-to-maturity of the Comparable Treasury Issue (computed as of the third business day immediately preceding the redemption), assuming a price for the Comparable Treasury Issue (expressed as a percentage of its principal amount) equal to the Comparable Treasury Price for such redemption date. The redemption price and the Treasury Rate will be determined by us.

Offer to Repurchase Upon a Change of Control Repurchase Event

If a Change of Control Repurchase Event occurs, unless we have exercised our right to redeem the Notes in full, we will make an offer to each holder of Notes to repurchase all or any part (in minimum denominations of $2,000 and integral multiples of $1,000 principal amount) of that holder’s Notes at a repurchase price in cash equal to 100% of the aggregate principal amount of Notes repurchased plus any accrued and unpaid interest on the Notes repurchased to the date of purchase. Within 30 days following any Change of Control Repurchase Event or, at our option, prior to any Change of Control, but after the public announcement of the Change of Control, we will mail a notice to each holder describing the transaction or transactions that constitute or may constitute the Change of Control Repurchase Event and offering to repurchase Notes on the payment date specified in the notice, which date will be no earlier than 30 days and no later than 60 days from the date such notice is mailed. The notice shall, if mailed prior to the date of consummation of the Change of Control, state that the offer to purchase is conditioned on the Change of Control Repurchase Event occurring on or prior to the payment date specified in the notice. We will comply with the requirements of Rule 14e-1 under the Exchange Act and any other securities laws and regulations thereunder to the extent those laws and regulations are applicable in connection with the repurchase of the Notes as a result of a Change of Control Repurchase Event. To the extent that the provisions of any securities laws or regulations conflict with the Change of Control Repurchase Event provisions of the Notes, we will comply with the applicable securities laws and regulations and will not be deemed to have breached our obligations under the Change of Control Repurchase Event provisions of the Notes by virtue of such conflict.

On the Change of Control Repurchase Event payment date, subject to extension if necessary to comply with the provisions of the 1940 Act, we will, to the extent lawful:

The paying agent will promptly remit to each holder of Notes properly tendered the purchase price for the Notes, and the trustee will promptly authenticate and mail (or cause to be transferred by book-entry) to each holder a new Note equal in principal amount to any unpurchased portion of any Notes surrendered; provided that each new Note will be in a minimum principal amount of $2,000 or an integral multiple of $1,000 in excess thereof.

We will not be required to make an offer to repurchase the Notes upon a Change of Control Repurchase Event if a third party makes an offer in the manner, at the times and otherwise in compliance with the requirements for an offer made by us and such third party purchases all Notes properly tendered and not withdrawn under its offer.

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The source of funds that will be required to repurchase Notes in the event of a Change of Control Repurchase Event will be our available cash or cash generated from our operations or other potential sources, including funds provided by a purchaser in the Change of Control transaction, borrowings, sales of assets or sales of equity. We cannot assure you that sufficient funds from such sources will be available at the time of any Change of Control Repurchase Event to make required repurchases of Notes tendered. Before making any such repurchase of Notes, we would also have to comply with certain requirements under our Credit Facility, to the extent such requirements remain in effect at such time, or otherwise obtain consent from the lenders under the Credit Facility. The terms of our Credit Facility also provide that certain change of control events will constitute an event of default thereunder entitling the lenders to accelerate any indebtedness outstanding under our Credit Facility at that time and to terminate the Credit Facility. In addition, the occurrence of a Change of Control Repurchase Event enabling the holders of the Notes to require the mandatory purchase of the Notes would likely constitute an event of default under our Credit Facility, entitling the lenders to accelerate any indebtedness outstanding under our Credit Facility at that time and to terminate the Credit Facility. Our and our subsidiaries’ future financing facilities may contain similar provisions or other restrictions. Our failure to purchase such tendered Notes upon the occurrence of such Change of Control Repurchase Event would cause an event of default under the indenture governing the Notes and a cross-default under the agreements governing certain of our other indebtedness, including under the indenture governing the 2026 Notes and agreements governing the Credit Facility, which may result in the acceleration of such indebtedness requiring us to repay that indebtedness immediately. If the holders of the Notes or the 2026 Notes exercise their respective right to require us to repurchase any Notes or any 2026 Notes, respectively, upon a Change of Control Repurchase Event (as defined in the relevant indenture), the financial effect of any such repurchase could cause a default under our future debt instruments, even if the Change of Control Repurchase Event itself would not cause a default. It is possible that we will not have sufficient funds at the time of the Change of Control Repurchase Event to make the required repurchase of the Notes and/or our other debt.

The definition of “Change of Control” includes a phrase relating to the direct or indirect sale, transfer, conveyance or other disposition of “all or substantially all” of our properties or assets and those of our subsidiaries taken as a whole. Although there is a limited body of case law interpreting the phrase “substantially all,” there is no precise, established definition of the phrase under applicable law. Accordingly, the ability of a holder of Notes to require us to repurchase the Notes as a result of a sale, transfer, conveyance or other disposition of less than all of our assets and the assets of our subsidiaries taken as a whole to another person or group may be uncertain.

For purposes of the Notes:

“Below Investment Grade Rating Event” means the Notes are downgraded below Investment Grade by the Rating Agency on any date from the date of the public notice of an arrangement that results in a Change of Control until the end of the 60-day period following public notice of the occurrence of a Change of Control (which period shall be extended so long as the rating of the Notes is under publicly announced consideration for possible downgrade by the Rating Agency); provided that a Below Investment Grade Rating Event otherwise arising by virtue of a particular reduction in rating shall not be deemed to have occurred in respect of a particular Change of Control (and thus shall not be deemed a Below Investment Grade Rating Event for purposes of the definition of Change of Control Repurchase Event hereunder) if the Rating Agency does not announce or publicly confirm or inform the trustee in writing at its request (acting at the direction of holders of a majority in Principal amount of the Notes) that the reduction was the result, in whole or in part, of any event or circumstance comprised of or arising as a result of, or in respect of, the applicable Change of Control (whether or not the applicable Change of Control shall have occurred at the time of the Below Investment Grade Rating Event).

“Change of Control” means the occurrence of any of the following:

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“Change of Control Repurchase Event” means the occurrence of a Change of Control and a Below Investment Grade Rating Event.

“Controlled Subsidiary” means any subsidiary of Fidus Investment Corporation, 50% or more of the outstanding equity interests of which are owned by Fidus Investment Corporation and its direct or indirect subsidiaries and of which Fidus Investment Corporation possesses, directly or indirectly, the power to direct or cause the direction of the management or policies, whether through the ownership of voting equity interests, by agreement or otherwise.

“Egan-Jones” means Egan-Jones Ratings Company or any successor thereto.

“Investment Grade” means a rating of BBB- or better by Egan-Jones (or its equivalent under any successor rating categories of Egan-Jones) (or, if such Rating Agency ceases to rate the Notes for reasons outside of our control, the equivalent investment grade credit rating from any Rating Agency selected by us as a replacement Rating Agency).

“Permitted Holders” means (i) us, (ii) one or more of our Controlled Subsidiaries or (iii) the Adviser, any affiliate of the Adviser or any entity that is managed or advised by the Adviser or any of their affiliates.

“Rating Agency” means:

“Voting Stock” as applied to stock of any person, means shares, interests, participations or other equivalents in the equity interest (however designated) in such person having ordinary voting power for the election of a majority of the directors (or the equivalent) of such person, other than shares, interests, participations or other equivalents having such power only by reason of the occurrence of a contingency.

Global Securities

Each Note will be issued in book-entry form and represented by a global security that we deposit with and register in the name of DTC or its nominee. A global security may not be transferred to or registered in the name of anyone other than the depositary or its nominee, unless special termination situations arise. As a result of these arrangements, the depositary, or its nominee, will be the sole registered owner and holder of all the Notes represented by a global security, and investors will be permitted to own only beneficial interests in a global security. For more information about these arrangements, see “—Book- Entry Procedures” below.

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Termination of a Global Security

If a global security is terminated for any reason, interests in it will be exchanged for certificates in non-book-entry form (certificated securities). After that exchange, the choice of whether to hold the certificated Notes directly or in street name will be up to the investor. Investors must consult their own banks or brokers to find out how to have their interests in a global security transferred on termination to their own names, so that they will be holders.

Conversion and Exchange

The Notes are not convertible into or exchangeable for other securities.

Payment and Paying Agents

We will pay interest to the person listed in the trustee’s records as the owner of the Notes at the close of business on a particular day in advance of each due date for interest, even if that person no longer owns the Note on the interest due date. That day, usually about two weeks in advance of the interest due date, is called the “record date.” Because we will pay all the interest for an interest period to the holders on the record date, holders buying and selling the Notes must work out between themselves the appropriate purchase price. The most common manner is to adjust the sales price of the Notes to prorate interest fairly between buyer and seller based on their respective ownership periods within the particular interest period. This prorated interest amount is called “accrued interest.”

Payments on Global Securities

We will make payments on the Notes so long as they are represented by a global security in accordance with the applicable policies of the depositary as in effect from time to time. Under those policies, we will make payments directly to the depositary, or its nominee, and not to any indirect holders who own beneficial interests in the global security. An indirect holder’s right to those payments will be governed by the rules and practices of the depositary and its participants, as described under “—Book-Entry Procedures” below.

Payments on Certificated Securities

In the event the Notes become represented by certificated securities, we will make payments on the Notes as follows. We will pay interest that is due on an interest payment date to the holder of the Notes as shown on the trustee’s records as of the close of business on the regular record date. We will make all payments of principal and premium, if any, by check at the office of the applicable trustee in New York, New York and/or at other offices that may be specified in the indenture or a notice to holders against surrender of the Note.

Alternatively, if the holder asks us to do so, we will pay any amount that becomes due on the debt security by wire transfer of immediately available funds to an account at a bank in New York, New York, on the due date. To request payment by wire, the holder must give the applicable trustee or other paying agent appropriate written transfer instructions at least 15 business days before the requested wire payment is due. In the case of any interest payment due on an interest payment date, the instructions must be given by the person who is the holder on the relevant regular record date. Any wire instructions, once properly given, will remain in effect unless and until new instructions are given in the manner described above.

Payment When Offices Are Closed

If any payment is due on the Notes on a day that is not a business day, we will make the payment on the next day that is a business day. Payments made on the next business day in this situation will be treated under the indenture as if they were made on the original due date. Such payment will not result in a default under the Notes or the indenture, and no interest will accrue on the payment amount from the original due date to the next day that is a business day.

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Book-entry and other indirect holders should consult their banks or brokers for information on how they will receive payments on the Notes.

Events of Default

You will have rights if an Event of Default occurs in respect of the Notes and the Event of Default is not cured, as described later in this subsection.

The term “Event of Default” in respect of the Notes means any of the following:

An Event of Default for the Notes may, but does not necessarily, constitute an Event of Default for any other series of debt securities issued under the same or any other indenture. Within 90 days after the occurrence of any default under the indenture with respect to the Notes, the trustee shall transmit notice to the holders of such default known to the trustee, unless such default shall have been cured or waived; provided, however, that, except in the case of a default in the payment of the principal of (or premium, if any, on) or interest, if any, on any Note, the trustee shall be protected in withholding such notice if and so long as the board of directors, the executive committee or a trust committee of directors of the trustee in good faith determines that withholding of such notice is in the interest of the holders of the Notes; and provided further that in the case of any default or breach specified in the third bullet point above with respect to the Notes, no such notice shall be given until at least 60 days after the occurrence thereof.

Remedies if an Event of Default Occurs

If an Event of Default has occurred and is continuing, then and in every case (other than an Event of Default specified in the penultimate bullet point above), the trustee or the holders of not less than 25% in principal amount of the Notes may declare the entire principal amount of all the Notes to be due and immediately payable,

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but this does not entitle any holder of Notes to any redemption payout or redemption premium. Notwithstanding the foregoing, in the case of the events of bankruptcy, insolvency or reorganization described in the penultimate bullet point above, 100% of the principal of and accrued and unpaid interest on the Notes will automatically become due and payable. In certain circumstances, a declaration of acceleration of maturity pursuant to either of the prior two sentences may be canceled by the holders of a majority in principal amount of the Notes if (1) we have deposited with the trustee all amounts due and owing with respect to the Notes (other than principal or any payment that has become due solely by reason of such acceleration) and certain other amounts, and (2) any other Events of Default have been cured or waived.

Except in cases of default, where the trustee has some special duties, the trustee is not required to take any action under the indenture at the request of any holders unless the holders offer the trustee protection from expenses and liability reasonably satisfactory to it (called an “indemnity”). If indemnity reasonably satisfactory to the trustee is provided, the holders of a majority in principal amount of the Notes may direct the time, method and place of conducting any lawsuit or other formal legal action seeking any remedy available to the trustee. The trustee may refuse to follow those directions in certain circumstances. No delay or omission in exercising any right or remedy will be treated as a waiver of that right, remedy or Event of Default.

Before you are allowed to bypass the trustee and bring your own lawsuit or other formal legal action or take other steps to enforce your rights or protect your interests relating to the Notes, the following must occur:

However, you are entitled at any time to bring a lawsuit for the payment of money due on your Notes on or after the due date.

Book-entry and other indirect holders should consult their banks or brokers for information on how to give notice or direction to or make a request of the trustee and how to declare or cancel an acceleration of maturity.

Each year, we will furnish to the trustee a written statement of certain of our officers certifying that to their knowledge we are in compliance with the indenture and the Notes, or else specifying any default.

Waiver of Default

The holders of a majority in principal amount of the Notes may waive any past defaults other than a default:

Merger, Consolidation or Asset Sale

Under the terms of the indenture, we are generally permitted to consolidate or merge with another entity. We are also permitted to sell all or substantially all of our assets to another entity. However, we may not take any of these actions unless all the following conditions are met:

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An assumption by any person of obligations under the Notes and the indenture might be deemed for U.S. federal income tax purposes to be an exchange of the Notes for new Notes by the holders thereof, resulting in recognition of gain or loss for such purposes and possibly other adverse tax consequences to the holders. Holders should consult their own tax advisors regarding the tax consequences of such an assumption.

Modification or Waiver

There are three types of changes we can make to the indenture and the Notes issued thereunder.

Changes Requiring Your Approval

First, there are changes that we cannot make to your Notes without your specific approval. The following is a list of those types of changes:

Changes Not Requiring Approval

The second type of change does not require any vote by the holders of the Notes. This type is limited to clarifications and certain other changes that would not adversely affect holders of the Notes in any material respect.

Changes Requiring Majority Approval

Any other change to the indenture and the Notes would require the following approval:

In each case, the required approval must be given by written consent. The holders of a majority in principal amount of all of the series of debt securities issued under an indenture, voting together as one class for this purpose, may waive our compliance with some of our covenants in that indenture.

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However, we cannot obtain a waiver of a payment default or of any of the matters covered by the bullet points included above under “—Changes Requiring Your Approval.”

Further Details Concerning Voting

When taking a vote, we will use the following rules to decide how much principal to attribute to the Notes:

The Notes will not be considered outstanding, and therefore not eligible to vote, if we have deposited or set aside in trust money for their payment or redemption or if we or any affiliate of ours own any Notes. The Notes will also not be eligible to vote if they have been fully defeased as described later under “—Defeasance—Full Defeasance” below.

We will generally be entitled to set any day as a record date for the purpose of determining the holders of the Notes that are entitled to vote or take other action under the indenture. However, the record date may not be earlier than 30 days before the date of the first solicitation of holders to vote on or take such action and not later than the date such solicitation is completed. If we set a record date for a vote or other action to be taken by holders of the Notes, that vote or action may be taken only by persons who are holders of the Notes on the record date and must be taken within eleven months following the record date.

Book-entry and other indirect holders should consult their banks or brokers for information on how approval may be granted or denied if we seek to change the indenture or the Notes or request a waiver.

Satisfaction and Discharge

The indenture will be discharged and will cease to be of further effect with respect to the Notes when:

and we, in the case of the first, second and third sub-bullets above, have irrevocably deposited or caused to be deposited with the trustee, as trust, funds in trust solely for the benefit of the holders of the Notes, in amounts as will be sufficient, to pay and discharge the entire indebtedness (including all principal, premium, if any, and interest) on such Notes not previously delivered to the trustee for cancellation (in the case of Notes that have become due and payable on or prior to the date of such deposit) or to the stated maturity or redemption date, as the case may be;

Defeasance

The following provisions will be applicable to the Notes. “Defeasance” means that, by depositing with a trustee an amount of cash and/or government securities sufficient to pay all principal and interest, if any, on the Notes

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when due and satisfying any additional conditions noted below, we will be deemed to have been discharged from our obligations under the Notes. In the event of a “covenant defeasance,” upon depositing such funds and satisfying similar conditions discussed below we would be released from certain covenants under the indenture relating to the Notes.

Covenant Defeasance

Under current U.S. federal income tax law and the indenture, we can make the deposit described below and be released from some of the restrictive covenants in the indenture under which the Notes were issued. This is called “covenant defeasance.” In that event, you would lose the protection of those restrictive covenants but would gain the protection of having money and government securities set aside in trust to repay your Notes. In order to achieve covenant defeasance, the following must occur:

If we accomplish covenant defeasance, you can still look to us for repayment of the Notes if there were a shortfall in the trust deposit or the trustee is prevented from making payment. In fact, if one of the remaining Events of Default occurred (such as our bankruptcy) and the Notes became immediately due and payable, there might be a shortfall. Depending on the event causing the default, you may not be able to obtain payment of the shortfall.

Full Defeasance

The Notes are subject to full defeasance. Full defeasance means that we can legally release ourselves from all payment and other obligations on the Notes, subject to the satisfaction of certain conditions, including, but not limited to that (a) we have received from, or there has been published by, the Internal Revenue Service (the “IRS”) a ruling, or (b) there is a change in U.S. federal income tax law, in either case to the effect that the holders of the Notes and any coupons appertaining thereto will not recognize income, gain or loss for U.S. federal income tax purposes as a result of such defeasance and will be subject to U.S. federal income tax on the same amounts, in the same manner and at the same times as would have been the case if such defeasance had not occurred (called “full defeasance”), and that we put in place the following other arrangements for you to be repaid:

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If we ever did accomplish full defeasance, as described above, you would have to rely solely on the trust deposit for repayment of the Notes. You could not look to us for repayment in the unlikely event of any shortfall. Conversely, the trust deposit would most likely be protected from claims of our lenders and other creditors if we ever became bankrupt or insolvent.

Other Covenants

In addition to any other covenants described in this prospectus supplement and the accompanying prospectus, as well as standard covenants relating to payment of principal and interest, maintaining an office where payments may be made or securities can be surrendered for payment and related matters, the following covenants will apply to the Notes:

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Form, Exchange and Transfer of Certificated Registered Securities

If registered Notes cease to be issued in book-entry form, they will be issued:

Holders may exchange their certificated securities for Notes of smaller denominations or combined into fewer Notes of larger denominations, as long as the total principal amount is not changed and as long as the denomination is equal to or greater than $2,000.

Holders may exchange or transfer their certificated securities at the office of the trustee. We have appointed the trustee to act as our agent for registering Notes in the names of holders transferring Notes. We may appoint another entity to perform these functions or perform them ourselves.

Holders will not be required to pay a service charge to transfer or exchange their certificated securities, but they may be required to pay any tax (including a withholding tax) or other governmental charge associated with the transfer or exchange. The transfer or exchange will be made only if our transfer agent is satisfied with the holder’s proof of legal ownership.

We may appoint additional transfer agents or cancel the appointment of any particular transfer agent. We may also approve a change in the office through which any transfer agent acts.

If any certificated securities of a particular series are redeemable and we redeem less than all the Notes, we may block the transfer or exchange of those Notes selected for redemption during the period beginning 15 days before the day we mail the notice of redemption and ending on the day of that mailing, in order to freeze the list of holders to prepare the mailing. We may also refuse to register transfers or exchanges of any certificated Notes selected for redemption, except that we will continue to permit transfers and exchanges of the unredeemed portion of any Note that will be partially redeemed.

If registered Notes are issued in book-entry form, only the depositary will be entitled to transfer and exchange the Notes as described in this subsection, since it will be the sole holder of the Notes.

Resignation of Trustee

The trustee may resign or be removed with respect to the Notes provided that a successor trustee is appointed to act with respect to the Notes. In the event that two or more persons are acting as trustee with respect to different series of indenture securities under the indenture, each of the trustees will be a trustee of a trust separate and apart from the trust administered by any other trustee.

Governing Law

The indenture and the Notes will be governed by and construed in accordance with the laws of the State of New York.

Indenture Provisions—Ranking

The Notes will be our direct unsecured obligations and will rank:

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The Trustee under the Indenture

U.S. Bank National Association serves as the trustee, paying agent, and security registrar under the indenture.

Book-Entry Procedures

The Notes will be represented by global securities that will be deposited and registered in the name of DTC or its nominee. This means that, except in limited circumstances, you will not receive certificates for the Notes. Beneficial interests in the Notes will be represented through book-entry accounts of financial institutions acting on behalf of beneficial owners as direct and indirect participants in DTC. Investors may elect to hold interests in the Notes through either DTC, if they are a participant, or indirectly through organizations that are participants in DTC.

The Notes will be issued as fully registered securities registered in the name of Cede & Co. (DTC’s partnership nominee) or such other name as may be requested by an authorized representative of DTC. One fully registered certificate will be issued for each issuance of the Notes, in the aggregate principal amount thereof, and will be deposited with DTC. Interests in the Notes will trade in DTC’s Same Day Funds Settlement System, and any permitted secondary market trading activity in such Notes will, therefore, be required by DTC to be settled in immediately available funds. None of the Company, the trustee or the paying agent will have any responsibility for the performance by DTC or its participants or indirect participants of their respective obligations under the rules and procedures governing their operations.

DTC is a limited-purpose trust company organized under the New York Banking Law, a “banking organization” within the meaning of the New York Banking Law, a member of the Federal Reserve System, a “clearing corporation” within the meaning of the New York Uniform Commercial Code, and a “clearing agency” registered pursuant to the provisions of Section 17A of the Exchange Act. DTC holds and provides asset servicing for over 3.5 million issues of U.S. and non-U.S. equity, corporate and municipal debt issues, and money market instruments from over 100 countries that DTC’s participants (“Direct Participants”) deposit with DTC. DTC also facilitates the post-trade settlement among Direct Participants of sales and other securities transactions in deposited securities through electronic computerized book-entry transfers and pledges between Direct Participants’ accounts. This eliminates the need for physical movement of securities certificates. Direct Participants include both U.S. and non-U.S. securities brokers and dealers, banks, trust companies, clearing corporations, and certain other organizations. DTC is a wholly owned subsidiary of The Depository Trust & Clearing Corporation (“DTCC”).

DTCC is the holding company for DTC, National Securities Clearing Corporation and Fixed Income Clearing Corporation, all of which are registered clearing agencies. DTCC is owned by the users of its regulated subsidiaries. Access to the DTC system is also available to others such as both U.S. and non-U.S. securities brokers and dealers, banks, trust companies and clearing corporations that clear through or maintain a custodial relationship with a Direct Participant, either directly or indirectly (“Indirect Participants”). DTC has a Standard & Poor’s Ratings Services’ rating of AA+. The DTC Rules applicable to its participants are on file with the SEC. More information about DTC can be found at www.dtcc.com and www.dtc.org.

Purchases of the Notes under the DTC system must be made by or through Direct Participants, which will receive a credit for the Notes on DTC’s records. The ownership interest of each actual purchaser of each security, or the

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“Beneficial Owner,” is in turn to be recorded on the Direct and Indirect Participants’ records. Beneficial Owners will not receive written confirmation from DTC of their purchase. Beneficial Owners are, however, expected to receive written confirmations providing details of the transaction, as well as periodic statements of their holdings, from the Direct or Indirect Participant through which the Beneficial Owner entered into the transaction. Transfers of ownership interests in the Notes are to be accomplished by entries made on the books of Direct and Indirect Participants acting on behalf of Beneficial Owners. Beneficial Owners will not receive certificates representing their ownership interests in the Notes, except in the event that use of the book-entry system for the Notes is discontinued.

To facilitate subsequent transfers, all Notes deposited by Direct Participants with DTC are registered in the name of DTC’s partnership nominee, Cede & Co. or such other name as may be requested by an authorized representative of DTC. The deposit of the Notes with DTC and their registration in the name of Cede & Co. or such other DTC nominee do not effect any change in beneficial ownership. DTC has no knowledge of the actual Beneficial Owners of the Notes; DTC’s records reflect only the identity of the Direct Participants to whose accounts the Notes are credited, which may or may not be the Beneficial Owners. The Direct and Indirect Participants will remain responsible for keeping account of their holdings on behalf of their customers.

Conveyance of notices and other communications by DTC to Direct Participants, by Direct Participants to Indirect Participants, and by Direct Participants and Indirect Participants to Beneficial Owners will be governed by arrangements among them, subject to any statutory or regulatory requirements as may be in effect from time to time.

Redemption notices shall be sent to DTC. If less than all of the Notes within an issue are being redeemed, DTC’s practice is to determine by lot the amount of the interest of each Direct Participant in such issue to be redeemed.

Redemption proceeds, distributions, and interest payments on the Notes will be made to Cede & Co., or such other nominee as may be requested by an authorized representative of DTC. DTC’s practice is to credit Direct Participants’ accounts upon DTC’s receipt of funds and corresponding detail information from us or the trustee on the payment date in accordance with their respective holdings shown on DTC’s records. Payments by participants to Beneficial Owners will be governed by standing instructions and customary practices, as is the case with securities held for the accounts of customers in bearer form or registered in “street name,” and will be the responsibility of such participant and not of DTC nor its nominee, the trustee, or us, subject to any statutory or regulatory requirements as may be in effect from time to time. Payment of redemption proceeds, distributions, and interest payments to Cede & Co. (or such other nominee as may be requested by an authorized representative of DTC) is the responsibility of us or the trustee, but disbursement of such payments to Direct Participants will be the responsibility of DTC, and disbursement of such payments to the Beneficial Owners will be the responsibility of Direct and Indirect Participants.

DTC may discontinue providing its services as securities depository with respect to the Notes at any time by giving reasonable notice to us or to the trustee. Under such circumstances, in the event that a successor securities depository is not obtained, certificates are required to be printed and delivered. We may decide to discontinue use of the system of book-entry-only transfers through DTC (or a successor securities depository). In that event, certificates will be printed and delivered to DTC.

The information in this section concerning DTC and DTC’s book-entry system has been obtained from sources that we believe to be reliable, but neither we nor any of the underwriters take any responsibility for its accuracy.

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CERTAIN U.S. FEDERAL INCOME TAX CONSEQUENCES

The following discussion summarizes certain material U.S. federal income tax consequences of acquiring, owning and disposing of the Notes. The discussion is based upon the Code; current, temporary and proposed U.S. Treasury Regulations issued thereunder (the “Treasury Regulations”); the legislative history of the Code; IRS rulings, pronouncements, interpretations and practices; and judicial decisions now in effect, all of which are subject to change at any time. Any such change may be applied retroactively in a manner that could adversely affect a holder of the Notes. This discussion is limited to persons purchasing the Notes for cash at original issue and at the offering price on the cover page of this prospectus supplement. Furthermore, this discussion assumes that each holder holds the Notes as “capital assets” within the meaning of Section 1221 of the Code (generally, property held for investment). It does not reflect every possible tax outcome or consequence that could result from acquiring, owning or disposing of the Notes. For example, special rules not discussed here may apply to you if you are:

This discussion also does not address the U.S. federal income tax consequences to beneficial owners of the Notes subject to the special tax accounting rules under Section 451(b) of the Code. In addition, this discussion does not reflect state, local or non-U.S. tax consequences that may apply to you based on your particular circumstances and residence. This discussion also does not address any U.S. federal tax consequences, such as the estate tax or gift tax, other than U.S. federal income tax consequences. You should consult your own tax advisors to determine the tax consequences particular to your situation, including any applicable state, local or foreign income and other tax consequences, which may result from your acquisition, ownership or disposition of the Notes.

As used herein, “U.S. holder” means a beneficial owner of the Notes that is, for U.S. federal income tax purposes:

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If any entity treated as a partnership for U.S. federal income tax purposes holds the Notes, the tax treatment of an owner of such entity generally will depend upon the status of the owner and the activities of the entity. If you are an owner of an entity treated as a partnership for U.S. federal income tax purposes, you should consult your tax advisor regarding the tax consequences of the entity’s purchase, ownership and disposition of the Notes. This discussion does not address the special treatment under U.S. federal income tax law that could result if we invested in tax-exempt securities or certain other investment assets. For purposes of this discussion, “non-U.S. holder” means a beneficial owner of the Notes that is neither a U.S. holder nor an entity treated as a partnership for U.S. federal income tax purposes.

Prospective holders considering purchasing the Notes should consult their own tax advisors concerning the application of the U.S. federal tax laws to their individual circumstances, as well as any consequences to such holders relating to purchasing, owning and disposing of the Notes under the laws of any other taxing jurisdiction.

U.S. Holders

If you are not a U.S. holder, this section does not apply to you.

Interest. The following discussion assumes that the Notes will be issued with no original issue discount or a de minimis amount of original issue discount for U.S. federal income tax purposes. A U.S. holder generally will be required to recognize and include in gross income any stated interest as ordinary income at the time it is paid or accrued on the Notes in accordance with such U.S. holder’s method of accounting for U.S. federal income tax purposes.

Sale or other taxable disposition of the Notes. A U.S. holder will recognize gain or loss on the sale, exchange, redemption, retirement or other taxable disposition of a Note equal to the difference between the sum of the cash and the fair market value of any property received in exchange therefor (less a portion allocable to any accrued and unpaid stated interest, which generally will be taxable as ordinary income if not previously included in such U.S. holder’s income) and the U.S. holder’s adjusted tax basis in the Note. A U.S. holder’s adjusted tax basis in a Note (or a portion thereof) generally will be the U.S. holder’s cost therefor. This gain or loss generally will be long-term capital gain or loss if the U.S. holder has held the Notes for more than one year at the time of such disposition. Long-term capital gains recognized by non-corporate U.S. holders are subject to reduced tax rates. The deductibility of capital losses may be subject to limitations.

Additional tax on net investment income. An additional surtax at a rate of 3.8% is imposed on the amount of “net investment income,” in the case of an individual, or undistributed “net investment income,” in the case of an estate or trust (other than a charitable trust), which exceeds certain threshold amounts. “Net investment income” as defined for this purpose generally includes interest payments and gain recognized from the sale or other taxable disposition of the Notes. U.S. holders should consult their own tax advisors regarding the effect, if any, of this surtax on their ownership and disposition of the Notes.

Information reporting and backup withholding. A U.S. holder may be subject to information reporting and backup withholding when such U.S. holder receives interest and principal payments on the Notes or proceeds upon the sale or other disposition of such Notes (including a redemption or retirement of the Notes). Certain U.S. holders (including, among others, corporations and certain tax-exempt organizations) generally are not subject to

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information reporting or backup withholding. A U.S. holder will be subject to backup withholding if such holder is not otherwise exempt and any of the following is true:

A U.S. holder should consult its tax advisor regarding its qualification for an exemption from backup withholding and the procedures for obtaining such an exemption, if applicable. Backup withholding is not an additional tax. Any amounts withheld under the backup withholding rules from a payment to a U.S. holder generally will be allowed as a credit against the U.S. holder’s U.S. federal income tax liability or may be refunded, provided the required information is furnished in a timely manner to the IRS.

Non-U.S. Holders

If you are not a non-U.S. holder, this section does not apply to you.

Interest. Subject to the discussion below concerning FATCA (as defined below), interest paid to a non-U.S. holder on its Notes that is not effectively connected with such non-U.S. holder’s conduct of a United States trade or business (and, if any applicable treaty so provides, is not attributable to the conduct of a trade or business through a permanent establishment or fixed base in the United States) will not be subject to U.S. federal withholding tax, provided that:

A non-U.S. holder generally will also be exempt from withholding tax on interest if such amount is effectively connected with such non-U.S. holder’s conduct of a United States trade or business and the non-U.S. holder provides us with appropriate certification (as discussed below under the caption “—United States trade or business”).

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Subject to the discussion below under “—United States trade or business,” if a non-U.S. holder does not satisfy the requirements above, interest paid to such non-U.S. holder generally will be subject to a 30% U.S. federal withholding tax. Such rate may be reduced or eliminated under a tax treaty between the United States and the non-U.S. holder’s country of residence. To claim a reduction or exemption under a tax treaty, a non-U.S. holder must generally complete an IRS Form W-8BEN or an IRS Form W-8BEN-E (or applicable successor form) and claim the reduction or exemption on the form.

Sale or other taxable disposition of the Notes. Subject to the discussion below concerning FATCA, a non-U.S. holder generally will not be subject to U.S. federal income tax or withholding tax on gain recognized on the sale, exchange, redemption, retirement or other taxable disposition of a Note so long as (i) the gain is not effectively connected with the conduct by the non-U.S. holder of a United States trade or business (or, if a tax treaty applies, the gain is not attributable to a United States permanent establishment maintained by such non-U.S. holder) and (ii) in the case of a non-U.S. holder who is an individual, such non-U.S. holder is not present in the United States for 183 days or more in the taxable year of disposition and certain other requirements are not met. A non-U.S. holder who is an individual and does not meet this exemption should consult his or her tax advisor regarding the potential liability for U.S. federal income tax on such holder’s gain realized on a Note.

United States trade or business. If interest paid on a Note or gain from a disposition of a Note is effectively connected with a non-U.S. holder’s conduct of a United States trade or business (and, if an income tax treaty applies, the non-U.S. holder maintains a United States permanent establishment to which such amounts are generally attributable), the non-U.S. holder generally will be subject to U.S. federal income tax on the interest or gain on a net basis in the same manner as if it were a U.S. holder. If a non-U.S. holder is subject to U.S. federal income tax on the interest on a net basis, the 30% withholding tax described above will not apply (assuming an appropriate certification is timely provided, generally on IRS Form W-8ECI). A non-U.S. holder that is a corporation may be subject to a branch profits tax equal to 30% of its effectively connected earnings and profits for the taxable year, subject to certain adjustments, unless it qualifies for a lower rate under an applicable income tax treaty. For this purpose, interest on a Note or gain from a disposition of a Note will be included in earnings and profits if the interest or gain is effectively connected with the conduct by the corporation of a United States trade or business.

Backup withholding and information reporting. A non-U.S. holder generally will not be subject to backup withholding and information reporting with respect to payments that we make to the non-U.S. holder, provided that we do not have actual knowledge or reason to know that such holder is a “United States person,” within the meaning of the Code, and the non-U.S. holder has given us the statement described above under “Non-U.S. Holders—Interest.” In addition, a non-U.S. holder will not be subject to backup withholding or information reporting with respect to the proceeds of the sale or other disposition of the Notes (including a retirement or redemption of such Notes) within the United States or conducted through certain U.S.-related brokers, if the payor receives the statement described above and does not have actual knowledge or reason to know that such holder is a United States person or the holder otherwise establishes an exemption. However, we may be required to report annually to the IRS and to the non-U.S. holder the amount of, and the tax withheld with respect to, any interest paid to the non-U.S. holder, regardless of whether any tax was actually withheld. Copies of these information returns may also be made available under the provisions of a specific treaty or agreement to the tax authorities of the country in which the non-U.S. holder resides.

A non-U.S. holder generally will be entitled to credit any amounts withheld under the backup withholding rules against the holder’s U.S. federal income tax liability or may claim a refund provided that the required information is furnished to the IRS in a timely manner.

Foreign Account Tax Compliance Act. Sections 1471 through 1474 of the Code and the Treasury Regulations and other published guidance promulgated thereunder (which are commonly referred to as “FATCA”) generally impose withholding taxes on certain types of payments made to “foreign financial institutions” and certain other non-U.S. entities unless additional certification, information reporting and other specified requirements are

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satisfied (including, in the case of a foreign financial institution, entering into an agreement to, among other requirements, identify financial accounts owned by certain of its direct and indirect U.S. investors). Failure to comply with the FATCA reporting requirements could result in withholding tax being imposed on payments of interest and sales proceeds to foreign intermediaries and certain non-U.S. holders. An intergovernmental agreement between the United States and an applicable foreign country, or future Treasury regulations or other guidance, may modify these requirements. While existing Treasury Regulations would require FATCA withholding on payments of the gross proceeds from the sale of any property that could produce U.S. source interest or dividends, the U.S. Treasury Department has recently released proposed regulations that eliminated this requirement. Pursuant to these proposed regulations, a taxpayer may (but is not required to) rely on this proposed change to FATCA withholding until final regulations are issued or until such proposed regulations are rescinded. The FATCA withholding tax will apply to all withholdable payments without regard to whether the beneficial owner of the payment would otherwise be entitled to an exemption from imposition of withholding tax pursuant to an applicable tax treaty with the United States or U.S. domestic law. If payment of this withholding tax is made, holders that are otherwise eligible for an exemption from, or reduction of, U.S. federal withholding taxes with respect to such interest or proceeds will be required to seek a credit or refund from the IRS to obtain the benefit of such exemption or reduction, if any. We will not pay additional amounts to holders of the Notes in respect of any amounts withheld. Prospective holders should consult their own tax advisors regarding the potential application of withholding under FATCA to their investment in the Notes.

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UNDERWRITING (CONFLICTS OF INTEREST)

Raymond James & Associates, Inc. is acting as the representative of the underwriters for this offering. Subject to the terms and conditions set forth in an underwriting agreement dated October 1, 2021 between us and the underwriters, we have agreed to sell to the underwriters, and each underwriter has severally agreed to purchase from us, the aggregate principal amount of Notes listed next to its name in the following table:

The underwriting agreement provides that the obligations of the several underwriters to pay for and accept delivery of the Notes are subject to certain conditions precedent such as the receipt by the underwriters of officers’ certificates and legal opinions. The underwriting agreement provides that the underwriters will purchase all of the Notes if any of the Notes are purchased. If an underwriter defaults, the underwriting agreement provides that, under the circumstances, the purchase commitments of the non-defaulting underwriters may be increased or the underwriting agreement may be terminated. We have agreed to indemnify the underwriters against certain liabilities, including liabilities under the Securities Act of 1933, as amended (the “Securities Act”), or to contribute to payments the underwriters may be required to make in respect of those liabilities.

The underwriters are offering the Notes, subject to their acceptance of the Notes from us and subject to prior sale. The underwriters reserve the right to withdraw, cancel or modify offers to the public and to reject orders in whole or in part.

The underwriters have agreed to purchase the Notes from us at 97.996% of the aggregate principal amount of the Notes, which will result in aggregate proceeds to us of approximately $122.1 million, after deducting the estimated offering expenses payable by us.

Commissions and Discounts

An underwriting discount of 2.00% per Note will be paid by us. The underwriters have advised us that they propose initially to offer the Notes to the public at the public offering price on the cover of this prospectus supplement and may offer the Notes to certain other Financial Institution Regulatory Authority, Inc. (FINRA) members at that price less a concession not in excess of 0.400% of the aggregate principal amount of the Notes. The underwriters may allow, and the dealers may reallow, a discount not in excess of 0.25% of the aggregate principal amount of the Notes. After the initial offering of the Notes to the public, the public offering price and such concessions may be changed. No such change shall change the amount of proceeds to be received by us as set forth on the cover page of this prospectus supplement.

The following table shows the total underwriting discount that we are to pay to the underwriters in connection with this offering.

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The expenses of the offering, not including the underwriting discount, are estimated at approximately $400,000 and are payable by us. We will pay the fees and expenses (including the reasonable fees and disbursements of underwriters’ counsel in an amount not to exceed $7,500) incident to securing any required review by FINRA of the terms of the sale of the Notes in this offering.

No Sales of Similar Securities

We have agreed not to directly or indirectly offer, sell, short sell or otherwise dispose of, or enter into any agreement to offer, sell, short sell or otherwise dispose of, any debt securities issued or guaranteed by us or other securities convertible into or exchangeable or exercisable for debt securities issued or guaranteed by us or derivative of debt securities issued or guaranteed by us for a period of 90 days after the date of this prospectus supplement without first obtaining the written consent of Raymond James & Associates, Inc. This consent may be given at any time without public notice.

Listing

We do not intend to list the Notes on any securities exchange or automated dealer quotation system.

We have been advised by the underwriters that they presently intend to make a market in the Notes after completion of the offering as permitted by applicable laws and regulations. The underwriters are not obligated, however, to make a market in the Notes and any such market-making may be discontinued at any time in the sole discretion of the underwriters without any notice. Accordingly, no assurance can be given as to the liquidity of, or development of a public trading market for, the Notes. If an active public trading market for the Notes does not develop, the market price and liquidity of the Notes may be adversely affected.

Stabilization

In connection with the offering, the underwriters may purchase and sell Notes in the open market and may impose a penalty bid. These transactions may include short sales, purchases to cover positions created by short sales and stabilizing transactions. Short sales involve the sale by an underwriter of a greater number of Notes than required to be purchased in this offering. Covering transactions involve purchases of the Notes in the open market after the distribution has been completed in order to cover short positions. Stabilizing transactions consist of certain bids or purchases of Notes made for the purpose of preventing or retarding a decline in the market price of the Notes while the offering is in progress.

Any of these activities may cause the price of the Notes to be higher than the price that otherwise would exist in the open market in the absence of such transactions. These transactions may be affected in the over-the-counter market or otherwise and, if commenced, may be discontinued at any time without any notice relating thereto.

Neither we nor the underwriters make any representation or prediction as to the direction or magnitude of any effect that the transactions described above may have on the price of the Notes. In addition, neither we nor the underwriters make any representation that any underwriter will engage in these transactions or that these transactions, once commenced, will not be discontinued without notice.

Electronic Distribution

A prospectus in electronic format may be made available by e-mail or on the web sites or through online services maintained by one or more of the underwriters participating in this offering, or by their respective affiliates. In those cases, prospective investors may view offering terms online and may be allowed to place orders online. The underwriters may agree with us to allocate a limited principal amount of the Notes for sale to online brokerage account holders. Any such allocation for online distributions will be made by the underwriters on the same basis as other allocations. Other than the prospectus in electronic format, information on the underwriters’ web sites and any

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information contained in any other web site maintained by any of the underwriters or their respective affiliates is not part of this prospectus supplement or the registration statement of which this prospectus supplement is a part, has not been approved and/or endorsed by us or the underwriters and should not be relied on by investors.

Conflicts of Interest

An affiliate of ING Financial Markets LLC, one of the underwriters in this offering, acts as a lender under the Credit Facility. A portion of the net proceeds from the sale of the Notes, not including underwriting compensation, may be paid to such affiliate of ING Financial Markets LLC in connection with the repayment of a portion of the outstanding indebtedness under the Credit Facility. As a result, ING Financial Markets LLC and/or its affiliate may receive more than 5% of the net proceeds of this offering, not including underwriting compensation.

Other Relationships

The underwriters and their respective affiliates have provided in the past and may provide from time to time in the future in the ordinary course of their business certain commercial banking, financial advisory, investment banking and other services to us, our portfolio companies or our affiliates for which they have received or will be entitled to receive separate fees. In particular, the underwriters or their respective affiliates may execute transactions with us, on behalf of us, any of our portfolio companies or our affiliates. In addition, the underwriters or their respective affiliates may act as arrangers, underwriters or placement agents for companies whose securities are sold to or whose loans are syndicated to us, our portfolio companies or our affiliates.

The underwriters or their respective affiliates may also trade in our securities, securities of our portfolio companies or other financial instruments related thereto for their own respective accounts or for the account of others and may extend loans or financing directly or through derivative transactions to us, any of our portfolio companies or our affiliates.

After the date of this prospectus supplement, the underwriters and their respective affiliates may from time to time obtain information regarding specific portfolio companies or us that may not be available to the general public. Any such information is obtained by the underwriters and their respective affiliates in the ordinary course of their respective business and not in connection with the offering of the Notes. In addition, after the offering period for the sale of the Notes, the underwriters or their respective affiliates may develop analyses or opinions related to us or our portfolio companies and buy or sell interests in one or more of our portfolio companies on behalf of their proprietary or client accounts and may engage in competitive activities. There is no obligation on behalf of these parties to disclose their respective analyses, opinions or purchase and sale activities regarding any portfolio company or regarding us to our noteholders or any other persons.

In the ordinary course of their various business activities, the underwriters and their respective affiliates may make or hold a broad array of investments and actively trade debt and equity securities (or related derivative securities) and financial instruments (including bank loans) for their own account and for the accounts of their customers. Such investments and securities activities may involve securities and/or instruments of ours or our affiliates. The underwriters and their respective affiliates may also make investment recommendations and/or publish or express independent research views in respect of such securities or financial instruments and may hold, or recommend to clients that they acquire, long and/or short positions in such securities and instruments.

The principal business addresses of the underwriters are as follows: Raymond James & Associates, Inc., 880 Carillon Parkway, St. Petersburg, Florida 33716; Keefe, Bruyette & Woods, Inc., 787 7th Avenue, 4th Floor, New York, New York 10019; Oppenheimer & Co. Inc., 85 Broad Street, 23rd Floor, New York, New York 10004; B. Riley Securities, Inc., 299 Park Avenue, 21st Floor, New York, New York 10171; Hovde Group, LLC, 1629 Colonial Parkway, Inverness, Illinois 60067; ING Financial Markets LLC, 1133 Avenue of the Americas, New York, New York 10036; and Ladenburg Thalmann & Co. Inc., 640 5th Avenue, 4th Floor, New York, New York 10019.

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Alternative Settlement Cycle

We expect that delivery of the Notes will be made against payment therefor on or about October 8, 2021, which will be the fifth business day following the date of pricing of the Notes (such settlement cycle being herein referred to as “T+5”). Under Rule 15c6-1 under the Exchange Act, trades in the secondary market generally are required to settle in two business days, unless the parties to any such trade expressly agree otherwise. Accordingly, purchasers who wish to trade the Notes on any date prior to the second business day before delivery thereof will be required, by virtue of the fact that the Notes initially will settle T+5, to specify an alternate settlement cycle at the time of any such trade to prevent a failed settlement. Purchasers of the Notes who wish to trade the Notes prior to their date of delivery hereunder should consult their own advisors.

Other Jurisdictions

Other than in the United States, no action has been taken by us or the underwriters that would permit a public offering of the Notes offered by this prospectus supplement in any jurisdiction where action for that purpose is required. The Notes offered by this prospectus supplement may not be offered or sold, directly or indirectly, nor may this prospectus supplement or any other offering material or advertisements in connection with the offer and sale of any such Notes be distributed or published in any jurisdiction, except under circumstances that will result in compliance with the applicable rules and regulations of that jurisdiction. Persons into whose possession this prospectus supplement comes are advised to inform themselves about and to observe any restriction relating to the offering and the distribution of this prospectus supplement. This prospectus supplement and the accompanying prospectus do not constitute an offer to sell or a solicitation of an offer to buy the Notes offered by this prospectus supplement and the accompanying prospectus in any jurisdiction in which such an offer or a solicitation is unlawful.

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LEGAL MATTERS

Certain legal matters regarding the Notes offered hereby will be passed upon for us by Eversheds Sutherland (US) LLP, Washington, D.C. Certain legal matters regarding the Notes offered hereby will be passed upon for the underwriters by Dechert LLP, Washington, D.C.

AVAILABLE INFORMATION

This prospectus supplement and the accompanying prospectus constitute part of a registration statement on Form N-2 that we have filed with the SEC, together with any and all amendments and related exhibits under the Securities Act. This prospectus supplement and the accompanying prospectus do not contain all of the information set forth in the registration statement, some of which is contained in exhibits to the registration statement as permitted by the rules and regulations of the SEC. For further information with respect to us and the Notes we are offering under this prospectus supplement and the accompanying prospectus, we refer you to the registration statement, including the exhibits filed as a part of, or incorporated by reference into, the registration statement. Statements contained in this prospectus supplement and the accompanying prospectus concerning the contents of any contract or any other document are not necessarily complete. If a contract or other document has been filed as an exhibit to the registration statement or otherwise incorporated by reference as an exhibit thereto, please see the copy of the contract or document that has been filed or incorporated by reference. Each statement in this prospectus supplement and the accompanying prospectus relating to a contract or document filed or incorporated by reference as an exhibit is qualified in all respects by such exhibit.

We file with or submit to the SEC annual, quarterly and current reports, proxy statements and other information meeting the informational requirements of the Exchange Act. We maintain a website at http://www.fdus.com and intend to make all of our annual, quarterly and current reports, proxy statements and other publicly filed information available, free of charge, on or through our website. You may also obtain such information, free of charge, by contacting us in writing at 1603 Orrington Avenue, Suite 1005, Evanston, Illinois 60201, Attention: Investor Relations. The SEC maintains a website that contains reports, proxy and information statements and other information we file with the SEC at http://www.sec.gov. Information contained on our website is not incorporated into this prospectus supplement or the accompanying prospectus and you should not consider such information to be part of this prospectus supplement or the accompanying prospectus.

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INCORPORATION BY REFERENCE

We incorporate by reference in this prospectus supplement the documents listed below and any future reports and other documents we file with the SEC pursuant to Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act, until all of the securities offered by this prospectus supplement have been sold or we otherwise terminate the offering of these securities (such reports and other documents deemed to be incorporated by reference into this prospectus supplement and to be part hereof from the date of filing of such reports and other documents); provided, however, that information “furnished” under Item 2.02 or Item 7.01 of Form 8-K, or other information “furnished” to the SEC pursuant to the Exchange Act will not be incorporated by reference into this prospectus supplement:

Any reports filed by us with the SEC before the date that any offering of any securities by means of this prospectus supplement and the accompanying prospectus is terminated will automatically update and, where applicable, supersede any information contained in this prospectus supplement and the accompanying prospectus or incorporated by reference into this prospectus supplement and the accompanying prospectus.

To obtain copies of these filings, see “Available Information” in this prospectus supplement.

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PROSPECTUS

$300,000,000

Common Stock

Preferred Stock

Subscription Rights

Debt Securities

Warrants

We may offer, from time to time, in one or more offerings or series, together or separately, up to $300,000,000 of our common stock, preferred stock, subscription rights, debt securities, or warrants representing rights to purchase shares of our common stock, preferred stock, or debt securities, which we refer to collectively as the “securities.” We may sell our common stock through underwriters or dealers, “at-the-market” to or through a market maker into an existing trading market or otherwise directly to one or more purchasers or through agents or through a combination of methods of sale. The identities of such underwriters, dealers, market makers or agents, as the case may be, will be described in one or more supplements to this prospectus. The securities may be offered at prices and on terms to be described in one or more supplements to this prospectus.

We may offer shares of common stock at a discount to net asset value per share in certain circumstances. On June 4, 2020, our common stockholders voted to allow us to sell or otherwise issue common stock at a price below net asset value per share for a period of one year ending on the earlier of June 4, 2021 or the date of our 2021 Annual Meeting of Stockholders. We expect to present to our stockholders a similar proposal at our 2021 Annual Meeting of Stockholders. Sales of common stock at prices below net asset value per share dilute the interests of existing stockholders, have the effect of reducing our net asset value per share and may reduce our market price per share. In addition, continuous sales of common stock below net asset value may have a negative impact on total returns and could have a negative impact on the market price of our shares of common stock. See “Risk Factors” in Part I, Item 1A in our most recent Annual Report on Form 10-K and in Part II, Item 1A of our most recent Quarterly Report on Form 10-Q for more information.

Our stockholders specified that the cumulative number of shares sold in each offering during the one-year period ending on the earlier of June 4, 2021 or the date of our 2021 Annual Meeting of Stockholders may not exceed 25.0% of our outstanding common stock immediately prior to such sale. In addition, we cannot issue shares of our common stock below net asset value unless our board of directors determines that it would be in our and our stockholders’ best interests to do so. Shares of closed-end investment companies such as us frequently trade at a discount to their net asset value. This risk is separate and distinct from the risk that our net asset value per share may decline. We cannot predict whether our common stock will trade above, at or below net asset value. You should read this prospectus and the applicable prospectus supplement carefully before you invest in our common stock.

We provide customized debt and equity financing solutions to lower middle-market companies, which we define as U.S. based companies having revenues between $10.0 million and $150.0 million. We are an externally managed, closed-end, non-diversified management investment company that has elected to be regulated as a business development company under the Investment Company Act of 1940, as amended. Our investment objective is to provide attractive risk-adjusted returns by generating both current income from our debt

investments and capital appreciation from our equity related investments. Our investment strategy includes partnering with business owners, management teams and financial sponsors by providing customized financing for ownership transactions, recapitalizations, strategic acquisitions, business expansion and other growth initiatives. Although we are classified as a non-diversified investment company within the meaning of the 1940 Act, we maintain the flexibility to operate as a diversified investment company and have done so for an extended period of time. We seek to maintain a diversified portfolio of investments in order to help mitigate the potential effects of adverse economic events related to particular companies, regions or industries.

We generally invest in securities that would be rated below investment grade if they were rated. Below investment grade securities, which are often referred to as “high yield” or “junk,” have speculative characteristics with respect to our capacity to pay interest and repay principal. See “Risk Factors” in Part I, Item 1A in our most recent Annual Report on Form 10-K and in Part II, Item 1A of our most recent Quarterly Report on Form 10-Q for more information.

Our common stock is listed on the Nasdaq Global Select Market under the symbol “FDUS.” On April 26, 2021, the last reported sale price of our common stock on the Nasdaq Global Select Market was $16.76 per share.

Fidus Investment Advisors, LLC serves as our investment advisor and as our administrator.

This prospectus describes some of the general terms that may apply to an offering of our securities. We will provide the specific terms of these offerings and securities in one or more supplements to this prospectus. We may also authorize one or more free writing prospectuses to be provided to you in connection with these offerings. The prospectus supplement and any related free writing prospectus may also add, update, or change information contained in this prospectus. You should carefully read this prospectus, the applicable prospectus supplement, and any related free writing prospectus, and the documents incorporated by reference, before buying any of the securities being offered. We file annual, quarterly and current reports, proxy statements and other information with the Securities and Exchange Commission, which is available free of charge upon written or oral request by contacting us by mail at 1603 Orrington Avenue, Suite 1005, Evanston, Illinois 60201, Attention: Investor Relations, by accessing our website at http://www.fdus.com, by calling us collect at (847) 859-3940 or by sending an e-mail to us at investorrelations@fdus.com. The Securities and Exchange Commission also maintains a website at http://www.sec.gov that contains such information, including the documents incorporated by reference into this prospectus. Information contained on our website is not incorporated by reference into this prospectus or any supplements to this prospectus, and you should not consider that information to be part of this prospectus or any supplements to this prospectus. The contact information provided above may be used by you to make investor inquiries. This prospectus should be retained for future reference.

An investment in our securities is very risky and highly speculative. Shares of closed-end investment companies, including BDCs, frequently trade at a discount to their net asset value. In addition, the companies in which we invest are subject to special risks. See “Risk Factors” beginning on page 10 of this prospectus, in Part I, Item 1A of our most recent Annual Report on Form 10-K, in Part II, Item 1A of our most recent Quarterly Report on Form 10-Q and in, or incorporated by reference into, the applicable prospectus supplement and in any free writing prospectuses we may authorize for use in connection with a specific offering, and under similar headings in the other documents that are incorporated by reference into this prospectus, to read about factors you should consider, including the risk of leverage, before investing in our securities.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

This prospectus may not be used to consummate sales of securities unless accompanied by a prospectus supplement.

The date of this prospectus is May 3, 2021

TABLE OF CONTENTS

ABOUT THIS PROSPECTUS

This prospectus is part of a registration statement that we have filed with the SEC, using the “shelf” registration process. Under this shelf registration statement, we may offer, from time to time, in one or more offerings, up to $300,000,000 of our common stock, preferred stock, subscription rights to purchase shares of our common stock, debt securities or warrants representing rights to purchase shares of our common stock, preferred stock or debt securities, on terms to be determined at the time of the offering. Our securities may be offered at prices and on terms described in one or more supplements to this prospectus. This prospectus provides you with a general description of our securities and the offerings thereof that we may make pursuant to this prospectus. Each time we use this prospectus to offer our securities, we will provide a prospectus supplement that will contain specific information about the terms of that offering. We may also authorize one or more free writing prospectuses to be provided to you that may contain material information relating to such offerings. In a prospectus supplement or free writing prospectus, we may also add, update or change any of the information contained in this prospectus or in the documents we have incorporated by reference into this prospectus. This prospectus, together with the applicable prospectus supplement, any related free writing prospectus, and the documents incorporated by reference into this prospectus and the applicable prospectus supplement, will include all material information relating to the applicable offering. Before buying any of the securities being offered, you should carefully read both this prospectus and the applicable prospectus supplement and any related free writing prospectus, together with any exhibits and the additional information described in the sections titled “Available Information,” “Incorporation of Certain Information by Reference,” “Summary” and “Risk Factors” in this prospectus.

This prospectus may contain estimates and information concerning our industry, including market size and growth rates of the markets in which we participate, that are based on industry publications and reports. This information involves many assumptions and limitations, and you are cautioned not to give undue weight to these estimates. We have not independently verified the accuracy or completeness of the data contained in these industry publications and reports. The industry in which we operate is subject to a high degree of uncertainty and risk due to a variety of factors, including those described in the section titled “Risk Factors” in this prospectus, in Part I, Item 1A our most recent Annual Report on Form 10-K and in Part II, Item 1A of our most recent Quarterly Report on Form 10-Q, that could cause results to differ materially from those expressed in these publications and reports.

This prospectus includes summaries of certain provisions contained in some of the documents described in this prospectus, but reference is made to the actual documents for complete information. All of the summaries are qualified in their entirety by the actual documents. Copies of some of the documents referred to herein have been filed, will be filed, or will be incorporated by reference as exhibits to the registration statement of which this prospectus is a part, and you may obtain copies of those documents as described in the section titled “Available Information” in this prospectus.

You should rely only on the information included or incorporated by reference in this prospectus, any prospectus supplement or in any free writing prospectus prepared by or on behalf of us or to which we have referred you. We have not authorized any dealer, salesperson or other person to provide you with different information or to make representations as to matters not stated in this prospectus or in any free writing prospectus prepared by or on behalf of us or to which we have referred you. We take no responsibility for, and can provide no assurance as to the reliability of, any other information that others may give you. If anyone provides you with different or inconsistent information, you should not rely on it. This prospectus, any applicable prospectus supplement and any free writing prospectus prepared by or on behalf of us or to which we have referred you do not constitute an offer to sell, or a solicitation of an offer to buy, any securities by any person in any jurisdiction where it is unlawful for that person to make such an offer or solicitation or to any person in any jurisdiction to whom it is unlawful to make such an offer or solicitation. You should not assume that the information included or incorporated by reference in this prospectus or any prospectus supplement or in any such free writing prospectus is accurate as of any date other than their respective dates.

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FEES AND EXPENSES

The following table is intended to assist you in understanding the costs and expenses that an investor in an offering will bear directly or indirectly. We caution you that some of the percentages indicated in the table below are estimates and may vary. The following table should not be considered a representation of our future expenses. Actual expenses may be greater or less than shown. Except where the context suggests otherwise, whenever this prospectus contains a reference to fees or expenses paid by “you,” “us,” “the Company” or “Fidus,” or that “we” will pay fees or expenses, stockholders will indirectly bear such fees or expenses as investors in us, however, your responsibility for such fees or expenses is limited to your investment in Fidus. The fee table and example below include all fees and expenses of our consolidated subsidiaries.

The incentive fee consists of two parts:

The first, payable quarterly in arrears, equals 20.0% of our pre-incentive fee net investment income, expressed as a rate of return on the value of our net assets, (including interest that is accrued but not yet received in cash), subject to a 2.0% quarterly (8.0% annualized) hurdle rate and a “catch-up” provision measured as of the end of each calendar quarter. Under this provision, in any calendar quarter, our investment advisor receives no incentive fee until our pre-incentive fee net investment income equals the

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hurdle rate of 2.0% but then receives, as a “catch-up,” 100.0% of our pre-incentive fee net investment income with respect to that portion of such pre-incentive fee net investment income, if any, that exceeds the hurdle rate but is less than 2.5%. The effect of this provision is that, if pre-incentive fee net investment income exceeds 2.5% in any calendar quarter, our investment advisor will receive 20.0% of our pre-incentive fee net investment income as if a hurdle rate did not apply.

The second part, payable annually in arrears, equals 20.0% of our realized capital gains net of realized capital losses and unrealized capital depreciation, if any, on a cumulative basis from inception through the end of the fiscal year (or upon the termination of the Investment Advisory Agreement, as of the termination date), less the aggregate amount of any previously paid capital gain incentive fees. We accrue, but do not pay, a capital gains incentive fee in connection with any net unrealized capital appreciation, as appropriate. For the year ended December 31, 2020, we accrued capital gains incentive fees (reversal) of ($1.7) million in accordance with generally accepted accounting principles.

See “Business—Management and Other Agreements—Investment Advisory Agreement” in Part I, Item 1 in our most recent Annual Report on Form 10-K.

Example

The following example demonstrates the projected dollar amount of total cumulative expenses over various periods with respect to a hypothetical investment in us. In calculating the following expense amounts, we have

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assumed we would have no additional leverage, that none of our assets are cash or cash equivalents and that our annual operating expenses would remain at the levels set forth in the table above. Transaction expenses are not included in the following example.

The foregoing table is to assist you in understanding the various costs and expenses that an investor in our common stock will bear directly or indirectly. While the example assumes, as required by the SEC, a 5.0% annual return, our performance will vary and may result in a return greater or less than 5.0%. Assuming a 5.0% annual return, the capital gains incentive fee under the Investment Advisory Agreement would either not be payable or have an insignificant impact on the expense amounts shown above. If we achieve sufficient returns on our investments, including through the realization of capital gains, to trigger an incentive fee of a material amount, our expenses, and returns to our investors, would be higher. In addition, while the example assumes reinvestment of all distributions at net asset value, if our board of directors authorizes and we declare a cash dividend, participants in our dividend reinvestment plan who have not otherwise elected to receive cash will receive a number of shares of our common stock, determined by dividing the total dollar amount of the distribution payable to a participant by the market price per share of our common stock at the close of trading on the valuation date for the distribution. See “Dividend Reinvestment Plan” for additional information regarding our dividend reinvestment plan.

This example and the expenses in the table above should not be considered a representation of our future expenses, and actual expenses (including the cost of debt, if any, and other expenses) may be greater or less than those shown.

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RISK FACTORS

Investing in our securities involves a high degree of risk. Before deciding whether to invest in our securities, you should carefully consider the risks and uncertainties described in the section titled “Risk Factors” in the applicable prospectus supplement and any related free writing prospectus, and discussed in the section titled “Risk Factors” in Part I, Item 1A of our most recent Annual Report on Form 10-K and any subsequent filings we have made with the SEC that are incorporated by reference into this prospectus or any prospectus supplement, together with other information in this prospectus, the documents incorporated by reference in this prospectus or any prospectus supplement, and any free writing prospectus that we may authorize for use in connection with this offering. The risks described in these documents are not the only ones we face. Additional risks and uncertainties that we are unaware of, or that we currently believe are not material, may also become important factors that adversely affect our business. Past financial performance may not be a reliable indicator of future performance, and historical trends should not be used to anticipate results or trends in future periods. If any of these risks actually occurs, our business, reputation, financial condition, results of operations, revenue, and future prospects could be seriously harmed. This could cause our net asset value and the trading price of our securities to decline, resulting in a loss of all or part of your investment. Please also read carefully the section titled “Special Note Regarding Forward-Looking Statements” in this prospectus.

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SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

This prospectus contains forward-looking statements that involve substantial risks and uncertainties. These forward-looking statements are not historical facts, but rather are based on current expectations, estimates and projections about us, our current and prospective portfolio investments, our industry, our beliefs, and our assumptions. Words such as “anticipates,” “expects,” “intends,” “plans,” “will,” “may,” “continue,” “believes,” “seeks,” “estimates,” “would,” “should,” “targets,” “projects” and variations of these words and similar expressions are intended to identify forward-looking statements. The forward-looking statements contained in this report involve risks and uncertainties, including statements as to:

These statements are not guarantees of future performance and are subject to risks, uncertainties and other factors, some of which are beyond our control and difficult to predict and could cause actual results to differ materially from those expressed or forecasted in the forward-looking statements, including without limitation:

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Although we believe that the assumptions on which these forward-looking statements are based are reasonable, any of those assumptions could prove to be inaccurate, and as a result, the forward-looking statements based on those assumptions also could be inaccurate. Important assumptions include our ability to originate new debt investments, certain margins and levels of profitability and the availability of additional capital. In light of these and other uncertainties, the inclusion of a projection or forward-looking statement in this prospectus should not be regarded as a representation by us that our plans and objectives will be achieved. These risks and uncertainties include those described or identified in “Risk Factors” in Part I, Item 1A of our most recent Annual Report on Form 10-K, in Part II, Item 1A of our most recent Quarterly Report on Form 10-Q, and elsewhere in this prospectus, any applicable prospectus supplement or free writing prospectus, including the documents we incorporate by reference. You should not place undue reliance on these forward-looking statements, which are based on information available to us as of the applicable date of this prospectus, any applicable prospectus supplement or free writing prospectus, including any documents incorporated by reference, and while we believe such information forms, or will form, a reasonable basis for such statements, such information may be limited or incomplete, and our statements should not be read to indicate that we have conducted an exhaustive inquiry into, or review of, all potentially available relevant information. These statements are inherently uncertain and investors are cautioned not to unduly rely on these statements.

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USE OF PROCEEDS

Unless otherwise specified in any prospectus supplement accompanying this prospectus, we intend to use the net proceeds from the sale of our securities to invest in lower middle-market companies in accordance with our investment objective and strategies, to repay the outstanding indebtedness under our Credit Facility and/or our unsecured debt, if any, and for working capital and general corporate purposes. We will also pay operating expenses, including management, incentive and administrative fees, and may pay other expenses, from the net proceeds of any offering. We plan to raise new equity when we have attractive investment opportunities available. Pending such use, we will invest the net proceeds of any offering primarily in short-term securities consistent with our BDC election and our election to be taxed as a RIC. See “Business—Regulation—Temporary Investments” in Part I, Item 1 in our most recent Annual Report on Form 10-K for additional information about temporary investments we may make while waiting to make longer-term investments in pursuit of our investment objective.

Pending such use, we will invest the net proceeds of this offering primarily in cash, cash equivalents, U.S. Government securities and other high-quality debt instruments that mature in one year or less, or “temporary investments,” as appropriate. These securities may have lower yields than our other investments and accordingly result in lower distributions, if any, by us during such period. See “Business—Regulation—Temporary Investments” in Part I, Item 1 in our most recent Annual Report on Form 10-K. Our ability to achieve our investment objective may be limited to the extent that the net proceeds from the offering, pending full investment, are held in interest bearing deposits or other short-term instruments that produce income at a rate less than our cost of capital.

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PRICE RANGE OF COMMON STOCK AND DISTRIBUTIONS

Our common stock began trading on June 21, 2011 on the NASDAQ Global Market under the symbol “FDUS.” Effective January 3, 2012, our common stock was included in the Nasdaq Global Select Market. The following table lists the high and low closing sale price for our common stock, and the closing sale price as a percentage of net asset value, or NAV, and the cash distributions per share that we have declared on our common stock for each fiscal quarter during the last two most recently completed fiscal years.

On April 26, 2021, the last reported sales price of our common stock was $16.76 per share. As of April 26, 2021, we had approximately 20 stockholders of record.

Shares of BDCs may trade at a market price that is less than the net asset value of those shares. The possibilities that our shares of common stock will trade at a discount from net asset value or at premiums that are unsustainable over the long term are separate and distinct from the risk that our net asset value will decrease. It is not possible to predict whether any common stock offered pursuant to this prospectus supplement will trade at, above, or below net asset value. As of April 26, 2021, our shares of common stock traded at a discount equal to approximately .30% of the net assets attributable to those shares based upon our $16.81 net asset value per share as of December 31, 2020. It is not possible to predict whether the shares offered hereby will trade at, above, or below net asset value.

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We intend to continue to pay quarterly distributions to our stockholders. Our quarterly distributions, if any, are determined by our board of directors. We have elected to be taxed as a RIC under Subchapter M of the Code. As long as we qualify for tax treatment as a RIC, we will not be taxed on our investment company taxable income or net capital gain, to the extent that such income or gain is distributed, or deemed to be distributed, to stockholders on a timely basis.

There were no deemed distributions during the years 2020, 2019 or 2018.

We may not be able to achieve operating results that will allow us to make distributions at a specific level or to increase the amount of these distributions from time to time. If we do not distribute a certain percentage of our income annually, we will suffer adverse tax consequences, including possible loss of our tax treatment as a RIC. We cannot assure stockholders that they will receive any distributions at a particular level.

We have adopted a dividend reinvestment plan that provides for reinvestment of our distributions on behalf of our stockholders, unless a stockholder elects to receive cash. As a result, if our board of directors authorizes, and we declare, a cash distribution, then our stockholders who have not “opted out” of our dividend reinvestment plan will have their cash distribution automatically reinvested in additional shares of our common stock, rather than receiving the cash distribution. Under the terms of our dividend reinvestment plan, dividends will primarily be paid in newly issued shares of common stock. However, we reserve the right to purchase shares in the open market in connection with the implementation of the plan. This feature of the plan means that, under certain circumstances, we may issue shares of our common stock at a price below net asset value per share, which could cause our stockholders to experience dilution.

To maintain our qualification as a RIC, we must, among other things, distribute at least 90.0% of our net ordinary income and our net short-term capital gains in excess of our net long-term capital losses, if any. In order to avoid certain excise taxes imposed on RICs, we currently intend to distribute during each calendar year an amount at least equal to the sum of (1) 98.0% of our net ordinary income for the calendar year, (2) 98.2% of our capital gain net income for the calendar year and (3) any net ordinary income and capital gain net income that we recognized for preceding years, but were not distributed during such years, and on which we paid no U.S. federal income tax. We may retain for investment some or all of our net capital gain (i.e., net long-term capital gains in excess of net short-term capital losses) and treat such amounts as deemed distributions to our stockholders. If we do this, you will be treated as if you received an actual distribution of the capital gain we retain and then reinvested the net after-tax proceeds in our common stock. You also may be eligible to claim a tax credit (or, in certain circumstances, a tax refund) equal to your allocable share of the tax we paid on the capital gain deemed distributed to you. Please refer to “Certain U.S. Federal Income Tax Considerations” for further information regarding the consequences of our retention of net capital gain. We can offer no assurance that we will achieve results that will permit the payment of any cash distributions and, if we issue senior securities, we will be prohibited from making distributions if doing so causes us to fail to maintain the asset coverage ratios stipulated by the 1940 Act or if distributions are limited by the terms of any of our borrowings. See “Regulation” and “Certain U.S. Federal Income Tax Considerations.”

We may make distributions that are payable in cash or shares of our common stock at the election of each stockholder. In accordance with Treasury regulations and published guidance issued by the Internal Revenue Service, a publicly offered RIC may treat distributions of its own stock as counting towards its RIC distribution requirements if each stockholder may elect to receive his, her, or its entire distribution in either cash or stock of the RIC. This published guidance indicates that the rule will apply where the aggregate amount of cash to be distributed to all stockholders is not less than 20% of the aggregate declared distribution. Under the published guidance, if too many stockholders elect to receive their distributions in cash, the cash available for distribution must be allocated among the stockholders electing to receive cash (with the balance of the distribution paid in stock). If we decide to make any distributions that are payable in part in shares of our stock, U.S. stockholders receiving such distributions generally will be required to include the full amount of the distribution (whether received in cash, shares of our stock, or a combination thereof) as ordinary income (or as long-term capital gain

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to the extent such distribution is properly reported as a capital gain dividend) to the extent of our current and accumulated earnings and profits. As a result, a U.S. stockholder may be required to pay tax with respect to such distributions in excess of any cash received. If a U.S. stockholder sells the stock it receives in order to pay this tax, the sales proceeds may be less than the amount included in income with respect to the distribution, depending on the market price of our stock at the time of the sale. Furthermore, with respect to non-U.S. stockholders, we may be required to withhold U.S. federal tax with respect to such distributions, including in respect of all or a portion of such distributions that are payable in stock. In addition, if a significant number of our stockholders determine to sell shares of our stock in order to pay taxes owed on such distributions, it may put downward pressure on the trading price of shares of our stock.

Distributions in excess of our current and accumulated profits and earnings would be treated first as a return of capital to the extent of the stockholder’s tax basis, and any remaining distributions would be treated as a capital gain. The determination of the tax attributes of our distributions will be made annually as of the end of our fiscal year based upon our taxable income for the full year and distributions paid for the full year. Therefore, a determination made on a quarterly basis may not be representative of the actual tax attributes of our distributions for a full year. Each year, a statement on Form 1099-DIV identifying the source of the distribution will be sent to our U.S. stockholders of record. Our board of directors presently intends to declare and pay quarterly dividends. Our ability to pay dividends could be affected by future business performance, liquidity, capital needs, alternative investment opportunities and loan covenants.

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FINANCIAL HIGHLIGHTS

The following table of financial highlights is intended to help a prospective investor understand the Company’s financial performance for the periods shown. The financial data set forth in the following table as of and for the years ended December 31, 2020 to 2011 are derived from our consolidated financial statements, which have been audited by RSM US LLP, an independent registered public accounting firm whose reports thereon are incorporated by reference in this prospectus, certain documents incorporated by reference in this prospectus or the accompanying prospectus supplement, or our Annual Reports on Form 10-K filed with the SEC, which may be obtained from www.sec.gov or upon request. In addition, the financial highlights table under the caption “Note 10. Financial Highlights” in our most recent Annual Report on Form 10-K is incorporated herein by reference. You should read these financial highlights in conjunction with our consolidated financial statements and notes thereto and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” included in this prospectus, any documents incorporated by reference in this prospectus or the accompanying prospectus supplement, or our Annual Reports on Form 10-K filed with the SEC.

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SELECTED CONSOLIDATED FINANCIAL DATA

The following selected consolidated financial data of FIC and its subsidiaries, including the Funds, as of and for the years ended December 31, 2020, 2019, 2018, 2017 and 2016, is derived from the consolidated financial statements that have been audited by RSM US LLP, an independent registered public accounting firm.

The selected consolidated financial information and other data presented below should be read in conjunction with “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Part II, Item 7 of our most recent Annual Report on Form 10-K and our consolidated financial statements and the related notes thereto and other financial information incorporated by reference in this prospectus.

The selected financial data in this section is not intended to replace the consolidated financial statements and is qualified in its entirety by our consolidated financial statements and related notes incorporated by reference in this prospectus to the consolidated financial statements in our most recent Annual Report on Form 10-K.

Information under “Selected Consolidated Financial Data” in Part II, Item 6 in our most recent subsequently filed Annual Report on Form 10-K is incorporated herein by reference. Such information should be read in conjunction with “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Part II, Item 7 in such subsequently filed Annual Report on Form 10-K.

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MANAGEMENT’S DISCUSSION AND ANALYSIS OF

FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The information included under the caption “Management’s Discussion and Analysis of Financial Condition and Results of Operations” in Part II, Item 7 of our most recent Annual Report on Form 10-K is incorporated herein by reference.

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SENIOR SECURITIES

Information about our senior securities as of the fiscal years ended December 31, 2020 to 2011 is located in the notes to our consolidated financial statements under the caption “Note 6. Debt” in our most recent Annual Report on Form 10-K, and is incorporated by reference into the registration statement of which this prospectus is a part. The report of our independent registered public accounting firm on the senior securities table as of December 31, 2020 is included in our most recent Annual Report on Form 10-K, filed on February 25, 2021, and is incorporated by reference into the registration statement of which this prospectus is a part.