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Filed Pursuant to Rule 424(b)(2)

Registration No.: 333-256733

PROSPECTUS SUPPLEMENT
(To Prospectus dated June 3, 2021)

8,000,000 Shares

Common Stock

We are offering for sale 8,000,000 shares of our common stock.

Ares Capital Corporation is a specialty finance company that is a closed-end, non-diversified management investment company incorporated in Maryland. We have elected to be regulated as a business development company under the Investment Company Act of 1940, as amended. Our investment objective is to generate both current income and capital appreciation through debt and equity investments. We invest primarily in first lien senior secured loans (including “unitranche” loans, which are loans that combine both senior and subordinated debt, generally in a first lien position), and second lien senior secured loans. In addition to senior secured loans, we also invest in subordinated debt (sometimes referred to as mezzanine debt), which in some cases includes an equity component, and preferred equity. To a lesser extent, we also make common equity investments.

We are externally managed by our investment adviser, Ares Capital Management LLC, a subsidiary of Ares Management Corporation, a publicly traded, leading global alternative investment manager. Ares Operations LLC, a subsidiary of Ares Management Corporation, provides certain administrative and other services necessary for us to operate.

Our common stock is traded on The Nasdaq Global Select Market under the symbol “ARCC.” On November 4, 2022, the official close price of our common stock on The Nasdaq Global Select Market was $19.39 per share. The net asset value per share of our common stock at September 30, 2022 (the last date prior to the date of this prospectus supplement on which we determined net asset value) was $18.56.

Investing in our common stock involves risks. Before making a decision to invest in our common stock, you should carefully consider the matters discussed under “Risk Factors” beginning on page 14 of the accompanying prospectus and the matters discussed in the documents incorporated or deemed to be incorporated by reference in this prospectus supplement and the accompanying prospectus.

This prospectus supplement and the accompanying prospectus concisely provide important information about us that you should know before investing in our common stock. We may also authorize one or more free writing prospectuses to be provided to you in connection with this offering (such free writing prospectus and this prospectus supplement collectively referred to hereinafter as the “prospectus supplement”). Please read this prospectus supplement and the accompanying prospectus, and the documents incorporated by reference, before you invest and keep them for future reference. We file annual, quarterly and current reports, proxy statements and other information with the Securities and Exchange Commission (the “SEC”). This information is available free of charge by calling us collect at (310) 201-4200, by sending an e-mail to us at [email protected] or on our website at www.arescapitalcorp.com. The SEC also maintains a website at www.sec.gov that contains such information. The information on the websites referred to herein is not incorporated by reference into this prospectus supplement or the accompanying prospectus.

The underwriters have agreed to purchase the common stock from us at a price of $18.87 per share, which will result in $150,960,000 of proceeds to us before expenses. The underwriters may offer the shares of common stock from time to time for sale in one or more transactions on The Nasdaq Global Select Market, in the over-the-counter market, through negotiated transactions or otherwise at market prices prevailing at the time of sale, at prices related to prevailing market prices or at negotiated prices.

Ares Capital Management LLC, our investment adviser, has agreed to pay to the underwriters a supplemental payment of  $1,920,000, or $0.24 per share (or $2,208,000, or $0.24 per share, if the underwriters’ option to purchase additional shares is exercised in full). This payment made by our investment adviser will not be subject to reimbursement by us. All other expenses of the offering will be borne by us. We will incur approximately $0.4 million of estimated expenses in connection with this offering.

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The underwriters may also purchase up to an additional 1,200,000 shares from us at the price per share set forth above within 30 days of the date of this prospectus supplement.

Neither the SEC nor any state securities commission 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.

The shares will be ready for delivery on or about November 10, 2022.

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The date of this prospectus supplement is November 7, 2022.

You should rely only on the information contained in this prospectus supplement and the accompanying prospectus, the documents incorporated by reference in this prospectus supplement and the accompanying prospectus, or any other information to which we have referred you. We have not, and the underwriters have not, authorized any other person to provide you with different information. If anyone provides you with different or inconsistent information, you should not rely on it. We are not, and the underwriters are not, making an offer to sell these securities 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 is accurate only as of the date on the front cover of this prospectus supplement or the accompanying prospectus, as applicable. Our business, financial condition, results of operations and prospects may have changed since that date. This prospectus supplement may add, update or change information contained in the accompanying prospectus. If information in this prospectus supplement is inconsistent with the accompanying prospectus, this prospectus supplement will apply and will supersede that information in the accompanying prospectus.

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Prospectus Supplement

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We use words such as “anticipates,” “believes,” “expects,” “intends,” “will,” “should,” “may” and similar expressions to identify forward-looking statements, although not all forward-looking statements include these words. Our actual results and condition could differ materially from those implied or expressed in the forward-looking statements for any reason, including the factors set forth in “Risk Factors” in the accompanying prospectus and the other information included in this prospectus supplement and the accompanying prospectus, including the documents we incorporate by reference herein and therein.

You should not place undue reliance on these forward-looking statements, which are based on information available to us as of the date of this prospectus supplement or the accompanying prospectus, as applicable, including any documents incorporated by reference. Except as required by the federal securities laws, we undertake no obligation to revise or update any forward-looking statements, whether as a result of new information, future events or otherwise.

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THE COMPANY

This summary highlights some of the information contained elsewhere in this prospectus supplement and the accompanying prospectus. It is not complete and may not contain all of the information that you may want to consider. You should read carefully the more detailed information set forth under “Risk Factors” in the accompanying prospectus and the other information included or incorporated by reference in this prospectus supplement and the accompanying prospectus. Except where the context suggests otherwise, the terms “we,” “us,” “our,” “the Company” and “Ares Capital” refer to Ares Capital Corporation and its consolidated subsidiaries; “Ares Capital Management” and “our investment adviser” refer to Ares Capital Management LLC; “Ares Operations” and “our administrator” refer to Ares Operations LLC; and “Ares” and “Ares Management” refer to Ares Management Corporation and its affiliated companies (other than portfolio companies of its affiliated funds).

Overview

Ares Capital, a Maryland corporation, is a specialty finance company that is a closed-end, non-diversified management investment company. We have elected to be regulated as a business development company, or a “BDC,” under the Investment Company Act of 1940, as amended, and the rules and regulations promulgated thereunder or the “Investment Company Act.” We were founded on April 16, 2004, were initially funded on June 23, 2004 and completed our initial public offering on October 8, 2004. As of September 30, 2022, we were the largest publicly traded BDC by market capitalization and had approximately $22.0 billion of total assets.

We are externally managed by our investment adviser, Ares Capital Management, a subsidiary of Ares Management, a publicly traded, leading global alternative investment manager, pursuant to our investment advisory and management agreement. Our administrator, Ares Operations, a subsidiary of Ares Management, provides certain administrative and other services necessary for us to operate.

Our investment objective is to generate both current income and capital appreciation through debt and equity investments. We invest primarily in U.S. middle-market companies, where we believe the supply of primary capital is limited and the investment opportunities are most attractive. However, we may from time to time invest in larger or smaller companies. We generally use the term “middle-market” to refer to companies with annual EBITDA between $10 million and $250 million. As used herein, EBITDA represents net income before net interest expense, income tax expense, depreciation and amortization.

We invest primarily in first lien senior secured loans (including “unitranche” loans, which are loans that combine both senior and subordinated debt, generally in a first lien position), and second lien senior secured loans. In addition to senior secured loans, we also invest in subordinated debt (sometimes referred to as mezzanine debt), which in some cases includes an equity component, and preferred equity. First and second lien senior secured loans generally are senior debt instruments that rank ahead of subordinated debt of a given portfolio company. Subordinated debt and preferred equity are subordinated to senior loans and are generally unsecured. Our investments in corporate borrowers generally range between $30 million and $500 million each and investments in project finance/power generation projects generally range between $10 million and $200 million. However, the investment sizes may be more or less than these ranges and may vary based on, among other things, our capital availability, the composition of our portfolio and general micro- and macro-economic factors.

To a lesser extent, we also make common equity investments, which have generally been non-control equity investments of less than $20 million (usually in conjunction with a concurrent debt investment). However, we may increase the size or change the nature of these investments.

The proportion of these types of investments will change over time given our views on, among other things, the economic and credit environment in which we are operating. In pursuit of our investment objective, we generally seek to self- originate investments and lead the investment process, which may result in us making commitments with respect to indebtedness or securities of a potential portfolio company in excess of our final investment. In such situations, while we may initially agree to fund up to a certain dollar amount of an investment, we may subsequently syndicate or sell a portion of such amount (including, without limitation, to vehicles managed by our portfolio company, Ivy Hill Asset Management, L.P. (“IHAM”)), such that we are left with a smaller investment than what was reflected in our original commitment. In addition to originating investments, we may also acquire investments in the secondary market (including purchases of a portfolio of investments).

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The first and second lien senior secured loans in which we invest generally have stated terms of three to 10 years and the subordinated debt investments in which we invest generally have stated terms of up to 10 years. However, we may invest in loans and securities with any maturity or duration. The instruments in which we invest typically are not rated by any rating agency, but we believe that if such instruments were rated, they would be below investment grade (rated lower than “Baa3” by Moody’s Investors Service, lower than “BBB-” by Fitch Ratings or lower than “BBB-” by Standard & Poor’s Ratings Services), which, under the guidelines established by these entities, is an indication of having predominantly speculative characteristics with respect to the issuer’s capacity to pay interest and repay principal. Bonds that are rated below investment grade are sometimes referred to as “high yield bonds” or “junk bonds.” We may invest without limit in debt or other securities of any rating, as well as debt or other securities that have not been rated by any nationally recognized statistical rating organization.

We believe that our investment adviser, Ares Capital Management, is able to leverage the current investment platform, resources and existing relationships of Ares Management with financial sponsors, financial institutions, hedge funds and other investment firms to provide us with attractive investment opportunities. In addition to deal flow, the Ares investment platform assists our investment adviser in analyzing, structuring and monitoring investments. Ares has been in existence for over 25 years and its partners have an average of approximately 24 years of experience in leveraged finance, private equity, distressed debt, commercial real estate finance, investment banking and capital markets. We have access to Ares’ investment professionals and administrative professionals, who provide assistance in accounting, finance, legal, compliance, operations, information technology and investor relations. As of June 30, 2022, Ares had over 800 investment professionals and over 1,450 administrative professionals.

While our primary focus is to generate current income and capital appreciation through investments in first and second lien senior secured loans and subordinated debt and, to a lesser extent, equity securities of eligible portfolio companies, we also may invest up to 30% of our portfolio in non-qualifying assets, as permitted by the Investment Company Act. See “Regulation” in the accompanying prospectus. Specifically, as part of this 30% basket, we may invest in entities that are not considered “eligible portfolio companies” (as defined in the Investment Company Act), including companies located outside of the United States, entities that are operating pursuant to certain exceptions under the Investment Company Act, and publicly traded entities whose public equity market capitalization exceeds the levels provided for under the Investment Company Act.

Senior Direct Lending Program

We have established a joint venture with Varagon Capital Partners (“Varagon”) to make certain first lien senior secured loans, including certain stretch senior and unitranche loans, primarily to U.S. middle-market companies. Varagon was formed in 2013 as a lending platform by American International Group, Inc. (NYSE: AIG) and other partners. The joint venture is called the Senior Direct Lending Program, LLC (the “SDLP”). The SDLP may generally commit and hold individual loans of up to $350 million. We may directly co-invest with the SDLP to accommodate larger transactions. The SDLP is capitalized as transactions are completed and all portfolio decisions and generally all other decisions in respect of the SDLP must be approved by an investment committee of the SDLP consisting of representatives of ours and Varagon (with approval from a representative of each required).

We provide capital to the SDLP in the form of subordinated certificates (the “SDLP Certificates”), and Varagon and its clients provide capital to the SDLP in the form of senior notes, intermediate funding notes and the SDLP Certificates. As of September 30, 2022, we and a client of Varagon owned 87.5% and 12.5%, respectively, of the outstanding SDLP Certificates.

As of September 30, 2022, we and Varagon and its clients had agreed to make capital available to the SDLP of $6.2 billion in the aggregate, of which approximately $4.8 billion has been funded. As of September 30, 2022, we agreed to make available to the SDLP (subject to the approval of the SDLP as described above) $1.4 billion, of which $1.1 billion was funded. As of September 30, 2022, the SDLP had commitments to fund delayed draw loans to certain of its portfolio companies of $311 million, which had been approved by the investment committee of the SDLP as described above, of which $73 million was committed by us. For more information on the SDLP, see “Management’s Discussion and Analysis of Financial Condition and Results of Operations — Portfolio and Investment Activity — Senior Direct Lending Program” in our Quarterly Report on Form 10-Q for the quarter ended September 30, 2022, filed with the SEC on October 25, 2022 and incorporated by reference herein.

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Ivy Hill Asset Management, L.P.

As of September 30, 2022, our portfolio company, IHAM, an SEC-registered investment adviser, managed 21 vehicles and served as the sub-manager/sub-servicer for one other vehicle (such vehicles, the “IHAM Vehicles”). As of September 30, 2022, IHAM had assets under management of approximately $12.5 billion. As of September 30, 2022, the amortized cost and fair value of our investment in IHAM was $1.8 billion and $2.0 billion, respectively. In connection with IHAM’s registration as a registered investment adviser, on March 30, 2012, we received exemptive relief from the SEC allowing us to, subject to certain conditions, own directly or indirectly up to 100% of IHAM’s outstanding equity interests and make additional investments in IHAM. From time to time, IHAM or certain IHAM Vehicles may purchase investments from us or sell investments to us, in each case for a price equal to the fair market value of such investments determined at the time of such transactions.

Ares Capital Management LLC

Ares Capital Management, our investment adviser, is served by an origination, investment and portfolio management team of approximately 150 U.S.-based investment professionals as of June 30, 2022 and led by certain partners of the Ares Credit Group: Kipp deVeer, Mitchell Goldstein and Michael Smith. Ares Capital Management leverages off of Ares’ investment platform and benefits from the significant capital markets, trading and research expertise of Ares’ investment professionals. Ares Capital Management’s investment committee has nine members primarily comprised of certain of the U.S.-based partners of the Ares Credit Group.

Recent Developments

From October 1, 2022 through October 20, 2022, we made new investment commitments of approximately $1.1 billion, of which $1.0 billion were funded. Of these new investment commitments, 68% were in first lien senior secured loans, 31% were in second lien senior secured loans and 1% were in other equity. Of the approximately $1.1 billion of new investment commitments, 98% were floating rate, 1% were non-income producing and 1% were on non-accrual status. The weighted average yield of debt and other income producing securities funded during the period at amortized cost was 11.0% and the weighted average yield on total investments funded during the period at amortized cost was 10.9%. We may seek to sell all or a portion of these new investment commitments, although there can be no assurance that we will be able to do so.

From October 1, 2022 through October 20, 2022, we exited approximately $418 million of investment commitments, including $6 million of loans sold to IHAM or certain vehicles managed by IHAM. Of the total investment commitments exited, 77% were first lien senior secured loans, 20% were preferred equity and 3% were second lien senior secured loans. Of the approximately $418 million of exited investment commitments, 80% were floating rate and 20% were fixed rate. The weighted average yield of debt and other income producing securities exited or repaid during the period at amortized cost was 10.0% and the weighted average yield on total investments exited or repaid during the period at amortized cost was 10.0%. Of the approximately $418 million of investment commitments exited from October 1, 2022 through October 20, 2022, we recognized total net realized gains of approximately $8 million, with no realized gains or losses recognized from the sale of loans to IHAM or certain vehicles managed by IHAM.

In addition, as of October 20, 2022, we had an investment backlog and pipeline of approximately $605 million and $0, respectively. Investment backlog includes transactions approved by our investment adviser’s investment committee and/or for which a formal mandate, letter of intent or a signed commitment have been issued, and therefore we believe are likely to close. Investment pipeline includes transactions where due diligence and analysis are in process, but no formal mandate, letter of intent or signed commitment have been issued. The consummation of any of the investments in this backlog and pipeline depends upon, among other things, one or more of the following: satisfactory completion of our due diligence investigation of the prospective portfolio company, our acceptance of the terms and structure of such investment and the execution and delivery of satisfactory transaction documentation. In addition, we may sell all or a portion of these investments and certain of these investments may result in the repayment of existing investments. We cannot assure you that we will make any of these investments or that we will sell all or any portion of these investments.

Our Corporate Information

Our administrative offices are located at 2000 Avenue of the Stars, 12th Floor, Los Angeles, California 90067, telephone number (310) 201-4200, and our principal executive offices are located at 245 Park Avenue, 44th Floor, New York, New York 10167, telephone number (212) 750-7300.

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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 our common stock will bear, directly or indirectly, based on the assumptions set forth below. We caution you that some of the percentages indicated in the table below are estimates and may vary. Except where the context suggests otherwise, whenever this prospectus supplement or the accompanying prospectus contains a reference to our fees or expenses, we will pay such fees and expenses out of our net assets and, consequently, stockholders will indirectly bear such fees or expenses as investors in Ares Capital.

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GAAP requires that the capital gains incentive fee accrual consider the cumulative aggregate unrealized capital appreciation in the calculation, as a capital gains incentive fee would be payable if such unrealized capital appreciation were realized, even though such unrealized capital appreciation is not permitted to be considered in calculating the fee actually payable under the Investment Company Act or the investment advisory and management agreement. This GAAP accrual is calculated using the aggregate cumulative realized capital gains and losses and aggregate cumulative unrealized capital depreciation included in the calculation of the capital gains incentive fee actually payable under the investment advisory and management agreement plus the aggregate cumulative unrealized capital appreciation. If such amount is positive at the end of a period, then GAAP requires us to record a capital gains incentive fee equal to 20% of such cumulative amount, less the aggregate amount of actual capital gains incentive fees paid or capital gains incentive fees accrued under GAAP in all prior periods. The resulting accrual for any capital gains incentive fee under GAAP in a given period may result in an additional expense if such cumulative amount is greater than in the prior period or a reversal of previously recorded expense if such cumulative amount is less than in the prior period. If such cumulative amount is negative, then there is no accrual. There can be no assurance that such unrealized capital appreciation will be realized in the future or that the amount accrued for will ultimately be paid.

For purposes of this table, we have assumed that these fees will be payable (in the case of the capital gains incentive fee) and that they will remain constant, although they are based on our performance and will not be paid unless we achieve certain goals. We expect to invest or otherwise utilize all of the net proceeds from this offering within three months of the date of completion of this offering and may have capital gains and interest income that could result in the payment of these fees to our investment adviser in the first year after completion of this offering. Since our initial public offering through September 30, 2022, the average quarterly fees accrued related to income based fees and capital gains incentive fees (including capital gains incentive fees accrued under GAAP even though they may not be payable) have been approximately 0.65% of our weighted average net assets for such period (2.61% on an annualized basis). For more detailed information on the calculation of our income based fees and capital gains incentive fees, please see below. For more detailed information about income based fees and capital gains incentive fees previously incurred by us, please see Note 3 to our consolidated financial statements in our Quarterly Report on Form 10-Q for the quarter ended September 30, 2022, filed with the SEC on October 25, 2022.

Income based fees are payable quarterly in arrears in an amount equal to 20% of our pre-incentive fee net investment income (including interest that is accrued but not yet received in cash), subject to a 1.75% quarterly (7.0% 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 adviser receives no income based fees until our net investment income equals the hurdle rate of 1.75% but then receives, as a “catch-up,” 100% 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 2.1875%. The effect of this provision is that, if pre-incentive fee net investment income exceeds 2.1875% in any calendar quarter, our investment adviser will receive 20% of our pre-incentive fee net investment income as if a hurdle rate did not apply.

Capital gains incentive fees are payable annually in arrears in an amount equal to 20% of our realized capital gains on a cumulative basis from inception through the end of the year, if any, computed net of all realized capital losses and unrealized capital depreciation on a cumulative basis, less the aggregate amount of capital gains incentive fees paid in all prior years.

We will defer cash payment of any income based fees and capital gains incentive fees otherwise earned by our investment adviser if, during the most recent four full calendar quarter period ending on or prior to the date such payment is to be made, the sum of (a) our aggregate distributions to our stockholders and (b) our change in net assets (defined as total assets less indebtedness and before taking into account any income based fees or capital gains incentive fees accrued during the period) is less than 7.0% of our net assets (defined as total assets less indebtedness) at the beginning of such period. Any deferred income based fees and capital gains incentive fees are carried over for payment in subsequent calculation periods to the extent such fees are payable under the terms of the investment advisory and management agreement.

These calculations will be adjusted for any share issuances or repurchases.

See “Item 1. Business — Investment Advisory and Management Agreement” in our Annual Report on Form 10-K for the year ended December 31, 2021.

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Example

The following example demonstrates the projected dollar amount of total cumulative expenses over various periods with respect to a hypothetical investment in our common stock. In calculating the following expense amounts, we have assumed that we would have no additional leverage, that none of our assets are cash or cash equivalents, that our annual operating expenses would remain at the levels set forth in the table above and that an investor would pay a sales load of 4.36% (underwriting discounts and commissions with respect to the shares sold in this offering). Income based fees and the capital gains incentive fees under the investment advisory and management agreement, which, assuming a 5% annual return, would either not be payable or have an insignificant impact on the expense amounts shown below, are not included in the example, except as specifically set forth below.

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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% annual return, our performance will vary and may result in a return greater or less than 5%. If we were to achieve sufficient returns on our investments, including through the realization of capital gains, to trigger income based fees or capital gains incentive fees of a material amount, our expenses, and returns to our investors, would be higher. In addition, while the example assumes reinvestment of all dividends and 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 dividend 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 dividend. See “Dividend Reinvestment Plan” in the accompanying prospectus 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 as actual expenses (including the cost of debt, if any, and other expenses) that we may incur in the future and such actual expenses may be greater or less than those shown.

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Investing in portfolio companies could include investments in our investment backlog and pipeline that, as of October 20, 2022, were approximately $605 million and $0, respectively. Please note that the consummation of any of the investments in this backlog and pipeline depends upon, among other things, one or more of the following: satisfactory completion of our due diligence investigation of the prospective portfolio company, our acceptance of the terms and structure of such investment and the execution and delivery of satisfactory transaction documentation. In addition, we may sell all or a portion of these investments and certain of these investments may result in the repayment of existing investments. We cannot assure you that we will make any of these investments or that we will sell all or any portion of these investments.

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Option to Purchase Additional Shares

We have granted an option to the underwriters to purchase up to 1,200,000 additional shares of common stock at the price per share set forth on the cover page of this prospectus supplement. The underwriters may exercise this option for 30 days from the date of this prospectus supplement. If the underwriters exercise this option, each will be obligated, subject to conditions contained in the purchase agreement, to purchase a number of additional shares proportionate to that underwriter’s initial amount reflected in the above table.

No Sales of Similar Securities

We have agreed, with exceptions, not to sell or transfer any common stock, or any securities convertible into or exercisable or exchangeable for common stock, for 30 days after the date of this prospectus supplement without first obtaining the written consent of Morgan Stanley & Co. LLC.

Our executive officers and directors have agreed, with exceptions, not to sell or transfer any common stock, or any securities convertible into or exercisable or exchangeable for common stock, for 30 days after the date of this prospectus supplement without first obtaining the written consent of Morgan Stanley & Co. LLC. Specifically, we and these other persons have agreed, with certain limited exceptions, not to directly or indirectly:

This lock-up provision applies to common stock and any securities convertible into or exercisable or exchangeable for common stock. It also applies to common stock owned now or acquired later by the person executing the agreement or for which the person executing the agreement later acquires the power of disposition.

Nasdaq Global Select Market Listing

The shares are listed on The Nasdaq Global Select Market under the symbol “ARCC.”

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Short Positions

In connection with the offering, the underwriters may purchase and sell our common stock in the open market. These transactions may include short sales and purchases on the open market to cover positions created by short sales. Short sales involve the sale by the underwriters of a greater number of shares than they are required to purchase in the offering. “Covered” short sales are sales made in an amount not greater than the underwriters’ option to purchase additional shares described above. The underwriters may close out any covered short position by either exercising their option to purchase additional shares or purchasing shares in the open market. In determining the source of shares to close out the covered short position, the underwriters will consider, among other things, the price of shares available for purchase in the open market as compared to the price at which they may purchase shares through the option granted to them. “Naked” short sales are sales in excess of the option. The underwriters must close out any naked short position by purchasing shares in the open market. A naked short position is more likely to be created if the underwriters are concerned that there may be downward pressure on the price of our common stock in the open market after pricing that could adversely affect investors who purchase in the offering.

Similar to other purchase transactions, the underwriters’ purchases to cover the syndicate short sales may have the effect of raising or maintaining the market price of our common stock or preventing or retarding a decline in the market price of our common stock. As a result, the price of our common stock may be higher than the price that might otherwise exist in the open market. The underwriters may conduct these transactions on The Nasdaq Global Select Market, in the over-the-counter market or otherwise.

Neither we nor any of 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 our common stock. In addition, neither we nor any of the underwriters make any representation that the underwriters will engage in these transactions or that these transactions, once commenced, will not be discontinued without notice.

Passive Market Making

In connection with this offering, underwriters may engage in passive market making transactions in the common stock on The Nasdaq Global Select Market in accordance with Rule 103 of Regulation M under the Exchange Act during a period before the commencement of offers or sales of common stock and extending through the completion of distribution. A passive market maker must display its bid at a price not in excess of the highest independent bid of that security. However, if all independent bids are lowered below the passive market maker’s bid, that bid must then be lowered when specified purchase limits are exceeded. Passive market making may cause the price of our common stock to be higher than the price that otherwise would exist in the open market in the absence of those transactions. The underwriters are not required to engage in passive market making and may end passive market making activities at any time.

Electronic Offer, Sale and Distribution of Shares

The underwriters may make prospectuses available in electronic (PDF) format. A prospectus in electronic (PDF) format may be made available on a web site maintained by the underwriters, and the underwriters may distribute such prospectuses electronically. The underwriters may allocate a limited number of shares for sale to their online brokerage customers.

Other Relationships

The underwriters and their respective affiliates are full service financial institutions engaged in various activities, which may include sales and trading, commercial and investment banking, advisory, investment management, investment research, principal investment, hedging, market making, brokerage and other financial and non-financial activities and services. 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 Ares and its affiliates and managed funds and Ares Capital or our portfolio companies for which they have received or will be entitled to receive separate fees. In particular, the underwriters or their affiliates may execute transactions with Ares Capital or on behalf of Ares Capital, Ares or any of our or their portfolio companies, affiliates and/or managed funds. In addition, the underwriters or their affiliates may act as arrangers, underwriters or placement agents for companies whose securities are sold to or whose loans are syndicated to Ares, Ares Capital or Ares Capital Management and their affiliates and managed funds.

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Affiliates of certain of the underwriters may be investors in private investment funds affiliated with our investment adviser, Ares Capital Management.

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

We may purchase securities of third parties from the underwriters or their affiliates after the offering. However, we have not entered into any agreement or arrangement regarding the acquisition of any such securities, and we may not purchase any such securities. We would only purchase any such securities if — among other things — we identified securities that satisfied our investment needs and completed our due diligence review of such securities.

After the date of this prospectus supplement, the underwriters and their 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 affiliates in the ordinary course of their business and not in connection with the offering of the common stock. In addition, after the offering period for the sale of our common stock, the underwriters or their affiliates may develop analyses or opinions related to Ares, Ares Capital 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 Ares Capital to our stockholders.

In the ordinary course of their business activities, the underwriters and their 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.

Affiliates of certain of the underwriters serve as agents and/or lenders under our credit facilities or other debt instruments (including the Revolving Credit Facility and the Revolving Funding Facility) and may also be lenders to private investment funds managed by IHAM. JPMorgan Chase Bank, N.A., an affiliate of J.P. Morgan Securities LLC, is the administrative agent under our Revolving Credit Facility. BofA Securities, Inc. (assignee of Merrill Lynch, Pierce, Fenner & Smith Incorporated) and JPMorgan Chase Bank, N.A. are joint bookrunners and joint lead arrangers for our Revolving Credit Facility. Bank of America, N.A., an affiliate of BofA Securities, Inc., is a syndication agent with respect to our Revolving Credit Facility. Wells Fargo Bank, N.A. is the agent under the Revolving Funding Facility. Certain of the underwriters and their affiliates were underwriters in connection with our initial public offering and our subsequent common stock offerings, debt offerings and rights offering, for which they received customary fees.

Proceeds of this offering will be used to repay or repurchase outstanding indebtedness under the Revolving Credit Facility, the Revolving Funding Facility, the SMBC Funding Facility and/or the BNP Funding Facility and for general corporate purposes. Affiliates of certain of the underwriters are lenders under the Revolving Credit Facility and/or the Revolving Funding Facility. Accordingly, affiliates of certain of the underwriters may receive more than 5% of the proceeds of this offering to the extent such proceeds are used to repay or repurchase outstanding indebtedness under the Revolving Credit Facility and/or the Revolving Funding Facility.

The principal business address of Morgan Stanley & Co. LLC is 1585 Broadway, New York, NY 10036. The principal business address of BofA Securities, Inc. is One Bryant Park, New York, NY 10036. The principal business address of UBS Securities LLC is 1285 Avenue of the Americas, New York, NY 10019.

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Notice to Prospective Investors in Australia

No placement document, prospectus, product disclosure statement, or other disclosure document has been lodged with the Australian Securities and Investments Commission (ASIC) in relation to this offering. This prospectus supplement does not constitute a prospectus, product disclosure statement, or other disclosure document under the Corporations Act 2001 (the Corporations Act) and does not purport to include the information required for a prospectus, product disclosure statement, or other disclosure document under the Corporations Act.

Any offer in Australia of our common stock may only be made to persons, or Exempt Investors, who are “sophisticated investors” (within the meaning of section 708(8) of the Corporations Act), “professional investors” (within the meaning of section 708(11) of the Corporations Act), or otherwise pursuant to one or more exemptions contained in section 708 of the Corporations Act so that it is lawful to offer our common stock without disclosure to investors under Chapter 6D of the Corporations Act.

The common stock applied for by Exempt Investors in Australia must not be offered for sale in Australia in the period of 12 months after the date of allotment under the offering, except in circumstances where disclosure to investors under Chapter 6D of the Corporations Act would not be required pursuant to an exemption under section 708 of the Corporations Act or otherwise or where the offer is pursuant to a disclosure document which complies with Chapter 6D of the Corporations Act. Any person acquiring securities must observe such Australian on-sale restrictions.

This prospectus supplement contains general information only and does not take account of the investment objectives, financial situation, or particular needs of any particular person. It does not contain any securities recommendations or financial product advice. Before making an investment decision, investors need to consider whether the information in this prospectus supplement is appropriate to their needs, objectives and circumstances, and, if necessary, seek expert advice on those matters.

Notice to Prospective Investors in the Dubai International Financial Centre

This prospectus supplement relates to an Exempt Offer in accordance with the Offered Securities Rules of the Dubai Financial Services Authority (“DFSA”). This prospectus supplement is intended for distribution only to persons of a type specified in the Offered Securities Rules of the DFSA. It must not be delivered to, or relied on by, any other person. The DFSA has no responsibility for reviewing or verifying any documents in connection with Exempt Offers. The DFSA has not approved this prospectus supplement nor taken steps to verify the information set forth herein and has no responsibility for the prospectus supplement. The common stock to which this prospectus supplement relates may be illiquid and/or subject to restrictions on their resale. Prospective purchasers of the common stock offered should conduct their own due diligence on the common stock. If you do not understand the contents of this prospectus supplement you should consult an authorized financial advisor.

Notice to Prospective Investors in Hong Kong

Shares of our common stock may not be offered or sold by means of any document other than (i) in circumstances which do not constitute an offer to the public within the meaning of the Companies Ordinance (Cap.32, Laws of Hong Kong), (ii) to “professional investors” within the meaning of the Securities and Futures Ordinance (Cap.571, Laws of Hong Kong) and any rules made thereunder, or (iii) in other circumstances which do not result in the document being a “prospectus” within the meaning of the Companies Ordinance (Cap.32, Laws of Hong Kong), and no advertisement, invitation, or document relating to shares of our common stock may be issued or may be in the possession of any person for the purpose of issue (in each case whether in Hong Kong or elsewhere), which is directed at, or the contents of which are likely to be accessed or read by, the public in Hong Kong (except if permitted to do so under the laws of Hong Kong) other than with respect to shares of our common stock which are or are intended to be disposed of only to persons outside Hong Kong or only to “professional investors” within the meaning of the Securities and Futures Ordinance (Cap. 571, Laws of Hong Kong) and any rules made thereunder.

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INCORPORATION OF CERTAIN INFORMATION BY REFERENCE

This prospectus supplement is part of a registration statement that we have filed with the SEC. The information incorporated by reference is considered to comprise a part of this prospectus supplement. Any reports filed by us with the SEC subsequent to the date of this prospectus supplement will automatically update and, where applicable, supersede any information contained in this prospectus supplement or incorporated by reference herein.

We incorporate by reference into this prospectus supplement our filings listed below and any future filings that we may file with the SEC under Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act, subsequent to the date of this prospectus supplement until all of the securities offered by this prospectus supplement and the accompanying prospectus have been sold or we otherwise terminate the offering of these securities; provided, however, that information “furnished” under Item 2.02 or Item 7.01 of Form 8-K or other information “furnished” to the SEC that is not deemed filed is not incorporated by reference in this prospectus supplement.

This prospectus supplement incorporates by reference the documents set forth below that have been previously filed with the SEC:

See “Available Information” in the accompanying prospectus for information on how to obtain a copy of these filings.

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PROSPECTUS

Common Stock

Preferred Stock

Debt Securities

Subscription Rights

Warrants

Units

Ares Capital Corporation is a specialty finance company that is a closed end, non-diversified management investment company incorporated in Maryland. We have elected to be regulated as a business development company under the Investment Company Act of 1940, as amended. Our investment objective is to generate both current income and capital appreciation through debt and equity investments. We invest primarily in first lien senior secured loans (including “unitranche” loans, which are loans that combine both senior and subordinated debt, generally in a first lien position), and second lien senior secured loans. In addition to senior secured loans, we also invest in subordinated debt (sometimes referred to as mezzanine debt), which in some cases includes an equity component, and preferred equity. To a lesser extent, we also make common equity investments. We are externally managed by our investment adviser, Ares Capital Management LLC, a subsidiary of Ares Management Corporation, a publicly traded, leading global alternative investment manager. Ares Operations LLC, a subsidiary of Ares Management Corporation, provides certain administrative and other services necessary for us to operate.

Our common stock is traded on The NASDAQ Global Select Market under the symbol “ARCC.” On May 28, 2021 the last reported sales price of our common stock on The NASDAQ Global Select Market was $19.47, per share. The net asset value per share of our common stock at March 31, 2021 (the last date prior to the date of this prospectus on which we determined net asset value) was $17.45.

Investing in our securities involves risks that are described in the “Risk Factors” section beginning on page 14 of this prospectus, including the risk of leverage.

We may offer, from time to time, in one or more offerings or series, our common stock, preferred stock, debt securities, subscription rights to purchase shares of our common stock, warrants representing rights to purchase shares of our common stock, preferred stock or debt securities, or units comprised of any combination of the foregoing, which we refer to, collectively, as the “securities.” The preferred stock, debt securities, subscription rights and warrants (including as part of a unit) offered hereby may be convertible or exchangeable into shares of our common stock. The securities may be offered at prices and on terms to be described in one or more supplements to this prospectus. In the event we offer common stock, the offering price per share of our common stock less any underwriting commissions or discounts will generally not be less than the net asset value per share of our common stock at the time we make the offering. However, we may issue shares of our common stock pursuant to this prospectus at a price per share that is less than our net asset value per share (a) in connection with a rights offering to our existing stockholders, (b) with the prior approval of the majority of our common stockholders or (c) under such circumstances as the U.S. Securities and Exchange Commission (the “SEC”) may permit. 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 accompanying 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 accompanying prospectus supplement, any related free writing prospectus and the documents incorporated by reference herein, before investing in our securities and keep them for future reference. We file annual, quarterly and current reports, proxy statements and other information with the SEC. This information is available free of charge by calling us collect at (310) 201-4200, by sending an e-mail to us at [email protected] or on our website at www.arescapitalcorp.com. The SEC also maintains a website at www.sec.gov that contains such information. The information on the websites referred to herein is not incorporated by reference into this prospectus or the accompanying prospectus supplement.

Neither the SEC 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 June 3, 2021.

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You should rely only on the information contained in this prospectus, the accompanying prospectus supplement, any related free writing prospectus, the documents incorporated by reference in this prospectus and the applicable prospectus supplement, or any other information to which we have referred you. We have not authorized any other person to provide you with different information. If anyone provides you with different or inconsistent information, you should not rely on it. We are not making an offer to sell these securities in any jurisdiction where the offer or sale is not permitted. You should assume that the information appearing in, or incorporated by reference in, this prospectus, the accompanying prospectus supplement or any such free writing prospectus is, or will be, accurate only as of the dates on their respective covers. Our business, financial condition, results of operations and prospects may have changed since any such date.

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PROSPECTUS SUMMARY

This summary highlights some of the information contained elsewhere in this prospectus. It is not complete and may not contain all of the information that you may want to consider. You should read carefully the more detailed information set forth under “Risk Factors” and the other information included or incorporated by reference in this prospectus and the accompanying prospectus supplement. Except where the context suggests otherwise, the terms “we,” “us,” “our,” “the Company” and “Ares Capital” refer to Ares Capital Corporation and its consolidated subsidiaries; “Ares Capital Management” and “our investment adviser” refer to Ares Capital Management LLC; “Ares Operations” and “our administrator” refer to Ares Operations LLC; and “Ares” and “Ares Management” refer to Ares Management Corporation (NYSE: ARES) and its affiliated companies (other than portfolio companies of its affiliated funds).

THE COMPANY

Overview

Ares Capital, a Maryland corporation, is a specialty finance company that is a closed-end, non-diversified management investment company. We have elected to be regulated as a business development company, or a “BDC,” under the Investment Company Act of 1940, as amended, and the rules and regulations promulgated thereunder or the “Investment Company Act.” We were founded on April 16, 2004, were initially funded on June 23, 2004 and completed our initial public offering (“IPO”) on October 8, 2004. As of March 31, 2021, we were the largest BDC in the United States with approximately $16.0 billion of total assets.

We are externally managed by our investment adviser, Ares Capital Management, a subsidiary of Ares Management, a publicly traded, leading global alternative investment manager, pursuant to our investment advisory and management agreement. Our administrator, Ares Operations, a subsidiary of Ares Management, provides certain administrative and other services necessary for us to operate.

Our investment objective is to generate both current income and capital appreciation through debt and equity investments. We invest primarily in U.S. middle-market companies, where we believe the supply of primary capital is limited and the investment opportunities are most attractive. However, we may from time to time invest in larger or smaller companies. We generally use the term “middle-market” to refer to companies with annual EBITDA between $10 million and $250 million. As used herein, EBITDA represents net income before net interest expense, income tax expense, depreciation and amortization.

We invest primarily in first lien senior secured loans (including “unitranche” loans, which are loans that combine both senior and subordinated debt, generally in a first lien position), and second lien senior secured loans. In addition to senior secured loans, we also invest in subordinated debt (sometimes referred to as mezzanine debt), which in some cases includes an equity component, and preferred equity. First and second lien senior secured loans generally are senior debt instruments that rank ahead of subordinated debt of a given portfolio company. Subordinated debt and preferred equity are subordinated to senior loans and are generally unsecured. Our investments in corporate borrowers generally range between $30 million and $500 million each and investments in project finance/power generation projects generally range between $10 million and $200 million. However, the investment sizes may be more or less than these ranges and may vary based on, among other things, our capital availability, the composition of our portfolio and general micro- and macro-economic factors.

To a lesser extent, we also make common equity investments, which have generally been non-control equity investments of less than $20 million (usually in conjunction with a concurrent debt investment). However, we may increase the size or change the nature of these investments.

The proportion of these types of investments will change over time given our views on, among other things, the economic and credit environment in which we are operating. In pursuit of our investment objective we generally seek to self-originate investments and lead the investment process, which may result in us making commitments with respect to indebtedness or securities of a potential portfolio company in excess of our final investment. In such situations, while we may initially agree to fund up to a certain dollar amount of an investment, we may subsequently syndicate or sell a portion of such amount (including, without limitation, to vehicles managed by our portfolio company, Ivy Hill Asset Management, L.P. (“IHAM”)), such that we are left with a smaller investment than what was reflected in our original commitment. In addition to originating investments, we may also acquire investments in the secondary market (including purchases of a portfolio of investments). The first and second lien senior secured loans in which we invest generally have stated terms of three to 10 years and the mezzanine debt investments in which we invest generally have stated

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terms of up to 10 years, but the expected average life of such first and second lien loans and mezzanine debt is generally between three and seven years. However, we may invest in loans and securities with any maturity or duration. The instruments in which we invest typically are not rated by any rating agency, but we believe that if such instruments were rated, they would be below investment grade (rated lower than “Baa3” by Moody’s Investors Service, lower than “BBB−” by Fitch Ratings or lower than “BBB−” by Standard & Poor’s Ratings Services), which, under the guidelines established by these entities, is an indication of having predominantly speculative characteristics with respect to the issuer’s capacity to pay interest and repay principal. Bonds that are rated below investment grade are sometimes referred to as “high yield bonds” or “junk bonds.” We may invest without limit in debt or other securities of any rating, as well as debt or other securities that have not been rated by any nationally recognized statistical rating organization.

We believe that our investment adviser, Ares Capital Management, is able to leverage the current investment platform, resources and existing relationships of Ares Management with financial sponsors, financial institutions, hedge funds and other investment firms to provide us with attractive investment opportunities. In addition to deal flow, the Ares investment platform assists our investment adviser in analyzing, structuring and monitoring investments. Ares has been in existence for over 20 years and its partners have experience in leveraged finance, private equity, distressed debt, commercial real estate finance, investment banking and capital markets. We have access to Ares’ investment professionals and administrative professionals, who provide assistance in accounting, finance, legal, compliance, operations, information technology and investor relations.

While our primary focus is to generate current income and capital appreciation through investments in first and second lien senior secured loans and mezzanine debt and, to a lesser extent, equity securities of eligible portfolio companies, we also may invest up to 30% of our portfolio in non-qualifying assets, as permitted by the Investment Company Act. See “Regulation” below. Specifically, as part of this 30% basket, we may invest in entities that are not considered “eligible portfolio companies” (as defined in the Investment Company Act), including companies located outside of the United States, entities that are operating pursuant to certain exceptions under the Investment Company Act, and publicly traded entities whose public equity market capitalization exceeds the levels provided for under the Investment Company Act.

See “Business” in our most recent Annual Report on Form 10-K for additional information about us.

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Our Corporate Information

Our administrative offices are located at 2000 Avenue of the Stars, 12th Floor, Los Angeles, California 90067, telephone number (310) 201-4200, and our principal executive offices are located at 245 Park Avenue, 44th Floor, New York, New York 10167, telephone number (212) 750-7300.

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