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As filed with the Securities and Exchange Commission on December 18, 2015

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

1933 Act File No. 333-            

Form N-2

REGISTRATION STATEMENT

UNDER

THE SECURITIES ACT OF 1933

¨  PRE-EFFECTIVE AMENDMENT NO.

¨  POST-EFFECTIVE AMENDMENT NO.

GLADSTONE CAPITAL CORPORATION

(Exact name of registrant as specified in charter)

1521 WESTBRANCH DRIVE, SUITE 100

MCLEAN, VA 22102

(Address of principal executive offices)

Registrant’s telephone number, including area code: (703) 287-5800

DAVID GLADSTONE

CHAIRMAN AND CHIEF EXECUTIVE OFFICER

GLADSTONE CAPITAL CORPORATION

1521 WESTBRANCH DRIVE, SUITE 100

MCLEAN, VIRGINIA 22102

(Name and address of agent for service)

COPIES TO:

Lori B. Morgan

Bass, Berry & Sims PLC

150 Third Avenue South

Suite 2800

Nashville, TN 37201

(615) 742-6280

(615) 742-6293 (Facsimile)

Approximate date of proposed public offering: From time to time after the effective date of this registration statement.

If any securities being registered on this form will be offered on a delayed or continuous basis in reliance on Rule 415 under the Securities Act of 1933, other than securities offered in connection with a dividend reinvestment plan, check the following box.  x

It is proposed that this filing will become effective (check appropriate box):

CALCULATION OF REGISTRATION FEE UNDER THE SECURITIES ACT OF 1933

The Registrant hereby amends this Registration Statement on such date or dates as may be necessary to delay its effective date until the Registrant shall file a further amendment which specifically states that this Registration Statement shall thereafter become effective in accordance with Section 8(a) of the Securities Act of 1933, as amended, or until this Registration Statement shall become effective on such date as the Securities and Exchange Commission, acting pursuant to Section 8(a), may determine.

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The information in this prospectus is not complete and may be changed. We may not sell these securities until the registration statement filed with the Securities and Exchange Commission is effective. This prospectus is not an offer to sell these securities and is not soliciting an offer to buy these securities in any state where the offer or sale is not permitted.

SUBJECT TO COMPLETION, DATED DECEMBER 18, 2015

PRELIMINARY PROSPECTUS

$300,000,000

COMMON STOCK

PREFERRED STOCK

SUBSCRIPTION RIGHTS

WARRANTS

DEBT SECURITIES

We may offer, from time to time, up to $300,000,000 aggregate initial offering price of our common stock, $0.001 par value per share, preferred stock, $0.001 par value per share, subscription rights, warrants representing rights to purchase shares of our common or preferred stock, or debt securities, or concurrent, separate offerings of these securities, which we refer to in this prospectus collectively as our Securities, in one or more offerings. The Securities may be offered at prices and on terms to be disclosed in one or more supplements to this prospectus. In the case of our common stock and warrants or rights to acquire such common stock hereunder, the offering price per share of our common stock by us, less any underwriting commissions or discounts, will not be less than the net asset value per share of our common stock at the time of the offering except (i) in connection with a rights offering to our existing common stockholders, (ii) with the consent of the holders of the majority of our outstanding stock, or (iii) under such other circumstances as the U.S. Securities and Exchange Commission (“SEC”) may permit. You should read this prospectus and the applicable prospectus supplement carefully before you invest in our Securities.

We operate as a closed-end, non-diversified management investment company and have elected to be treated as a business development company under the Investment Company Act of 1940, as amended. For federal income tax purposes, we have elected to be treated as a regulated investment company under Subchapter M of the Internal Revenue Code of 1986, as amended. Our investment objectives are to: (1) achieve and grow current income by investing in debt securities of established businesses that we believe will provide stable earnings and cash flow to pay expenses, make principal and interest payments on our outstanding indebtedness and make distributions to stockholders that grow over time; and (2) provide our stockholders with long-term capital appreciation in the value of our assets by investing in equity securities of established businesses that we believe can grow over time to permit us to sell our equity investments for capital gains.

Our Securities may be offered directly to one or more purchasers, including existing stockholders in a rights offering, through agents designated from time to time by us, to or 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 prospectus supplement relating to the offering will identify any agents or underwriters involved in the sale of our Securities, and will disclose any applicable purchase price, fee, commission or discount arrangement between us and our agents or underwriters or among our underwriters or the basis upon which such amount may be calculated. See “Plan of Distribution.” We may not sell any of our Securities through agents, underwriters or dealers without delivery of a prospectus supplement describing the method and terms of the offering of such Securities. Our common stock is traded on The NASDAQ Global Select Market (“NASDAQ”) under the symbol “GLAD.” As of December 17, 2015, the last reported sales price for our common stock was $7.24. Our 6.75% Series 2021 Term Preferred Stock, or our Series 2021 Term Preferred Stock, is also traded on the NASDAQ under the symbol “GLADO.” As of December 17, 2015, the last reported sales price for our Series 2021 Term Preferred Stock was $23.93.

Please read this prospectus and the accompanying prospectus supplement, if any, before investing, and keep it for future reference. It concisely sets forth important information about us that a prospective investor ought to know before investing in our securities. We file annual, quarterly and current reports, proxy statements and other information about us with the Securities and Exchange Commission. This information is available free of charge by contacting us at 1521 Westbranch Drive, Suite 100, McLean, Virginia 22102, or by calling us collect at (703) 287-5800 or on our website at www.gladstonecapital.com . Information contained on our website is not incorporated by reference into this prospectus, and you should not consider that information to be part of this prospectus. The Securities and Exchange Commission also maintains a website at www.sec.gov that contains such information. This prospectus may not be used to consummate sales of securities unless accompanied by a prospectus supplement.

The securities in which we invest generally would be rated below investment grade if they were rated by rating agencies. Below investment grade securities, which are often referred to as “junk,” have predominantly speculative characteristics with respect to the issuer’s capacity to pay interest and repay principal. They may also be difficult to value and are illiquid.

An investment in our Securities involves certain risks, including, among other things, risks relating to investments in securities of small, private and developing businesses. We describe some of these risks in the section entitled “Risk Factors,” which begins on page 13. Common shares of closed-end investment companies frequently trade at a discount to their net asset value and this may increase the risk of loss to purchasers of our Securities. You should carefully consider these risks together with all of the other information contained in this prospectus and any prospectus supplement before making a decision to purchase our Securities.

The SEC has not approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

The date of this prospectus is                     

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We have not authorized any dealer, salesman or other person to give any information or to make any representation other than those contained or incorporated by reference in this prospectus or any accompanying supplement to this prospectus. You must not rely upon any information or representation not contained or incorporated by reference in this prospectus or the accompanying prospectus supplement as if we had authorized it. This prospectus and any prospectus supplement do not constitute an offer to sell or a solicitation of any offer to buy any security other than the registered securities to which they relate, nor do they constitute an offer to sell or a solicitation of an offer to buy any securities in any jurisdiction to any person to whom it is unlawful to make such an offer or solicitation in such jurisdiction. The information contained in this prospectus and any prospectus supplement is accurate as of the dates on their respective covers only. Our business, financial condition, results of operations and prospects may have changed since such dates.

This prospectus is part of a registration statement that we have filed with the SEC using the “shelf” registration process. Under the shelf registration process, we may offer, from time to time, up to $300,000,000 of our Securities on terms to be determined at the time of the offering. This prospectus provides you with a general description of the Securities that we may offer. Each time we use this prospectus to offer Securities, we will provide a prospectus supplement that will contain specific information about the terms of that offering. The prospectus supplement may also add, update or change information contained in this prospectus. To the extent required by law, we will amend or supplement the information contained in this prospectus and any accompanying prospectus supplement to reflect any material changes to such information subsequent to the date of the prospectus and any accompanying prospectus supplement and prior to the completion of any offering pursuant to the prospectus and any accompanying prospectus supplement. Please carefully read this prospectus and any accompanying prospectus supplement together with the additional information described under “Additional Information” and “Risk Factors” before you make an investment decision.

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ADDITIONAL INFORMATION

We have filed with the SEC a registration statement on Form N-2 under the Securities Act of 1933, as amended, which we refer to as the Securities Act, with respect to the Securities offered by this prospectus. This prospectus, which is a part of the registration statement, does not contain all of the information set forth in the registration statement or exhibits and schedules thereto. For further information with respect to our business and our Securities, reference is made to the registration statement, including the amendments, exhibits and schedules thereto.

We also file reports, proxy statements and other information with the SEC under the Securities Exchange Act of 1934, as amended, which we refer to as the Exchange Act. Such reports, proxy statements and other information, as well as the registration statement and the amendments, exhibits and schedules thereto, can be inspected at the public reference facilities maintained by the SEC at 100 F Street, N.E., Washington, D.C. 20549. Information about the operation of the public reference facilities may be obtained by calling the SEC at 1-800-SEC-0330. The SEC maintains a website that contains reports, proxy statements and other information regarding registrants, including us, that file such information electronically with the SEC. The address of the SEC’s website is http://www.sec.gov. Copies of such material may also be obtained from the Public Reference Section of the SEC at 100 F Street, N.E., Washington, D.C. 20549, at prescribed rates. Our common stock is listed on the NASDAQ and our corporate website is located at www.gladstonecapital.com. The information contained on, or accessible through, our website is not a part of this prospectus.

We make available free of charge on our website our annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and all amendments to those reports as soon as reasonably practicable after such material is electronically filed with or furnished to the SEC.

We also furnish to our stockholders annual reports, which include annual financial information that has been examined and reported on, with an opinion expressed, by our independent registered public accounting firm. See “Experts.”

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RISK FACTORS

You should carefully consider the risks described below and all other information provided and incorporated by reference in this prospectus (or any prospectus supplement) before making a decision to purchase our Securities. 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, the trading price of our Securities could decline, and you may lose all or part of your investment.

Risks Related to the Economy

Capital markets may experience periods of disruption and instability. Such market conditions may materially and adversely affect debt and equity capital markets in the United States and abroad, which may have a negative impact on our business and operations.

From time to time, capital markets may experience periods of disruption and instability. For example, between 2007 and 2009, the global capital markets experienced an extended period of disruption as evidenced by a lack of liquidity in the debt capital markets, write-offs in the financial services sector, the re-pricing of credit risk and the failure of certain major financial institutions. Despite actions of the United States federal government and foreign governments, these events contributed to worsening general economic conditions that materially and adversely impacted the broader financial and credit markets and reduced the availability of debt and equity capital for the market as a whole and financial services firms in particular. While the adverse effects of these conditions have abated to a degree, global financial markets experienced significant volatility following the downgrade by Standard & Poor’s on August 5, 2011 of the long-term credit rating of U.S. Treasury debt from AAA to AA+. These market conditions have historically and could again have a material adverse effect on debt and equity capital markets in the United States and Europe, which could have a materially negative impact on our business, financial condition and results of operations. We and other companies in the financial services sector may have to access, if available, alternative markets for debt and equity capital. In such circumstances, equity capital may be difficult to raise because subject to some limited exceptions, as a BDC, we are generally not able to issue additional shares of our common stock at a price less than net asset value without general approval by our stockholders, which we currently have, and subsequent approval of the specific issuance by our Board of Directors. In addition, our ability to incur additional indebtedness or issue additional preferred stock is limited by applicable regulations such that our asset coverage, as defined in the 1940 Act, must equal at least 200% immediately after each time we incur indebtedness under our revolving line of credit or issue additional preferred stock. Any inability to raise capital could have a negative effect on our business, financial condition and results of operations.

The illiquidity of our investments may make it difficult for us to sell such investments if required. As a result, we may realize significantly less than the value at which we have recorded our investments.

Given the extreme volatility and dislocation that the capital markets have historically experienced, many BDCs have faced, and may in the future face, a challenging environment in which to raise capital. We may in the future have difficulty accessing debt and equity capital, and a severe disruption in the global financial markets or deterioration in credit and financing conditions could have a material adverse effect on our business, financial condition and results of operations. In addition, significant changes in the capital markets, including the extreme volatility and disruption, have had, and may in the future have, a negative effect on the valuations of our investments and on the potential for liquidity events involving our investments. An inability to raise capital, and any required sale of our investments for liquidity purposes, could have a material adverse impact on our business, financial condition or results of operations.

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Rising interest rates may adversely affect the value of our portfolio investments which could have an adverse effect on our business, financial condition and results of operations.

Our debt investments may be based on floating rates. General interest rate fluctuations may have a substantial negative impact on our investments, the value of our common stock and our rate of return on invested capital. A reduction in the interest rates on new investments relative to interest rates on current investments could also have an adverse impact on our net interest income. An increase in interest rates could decrease the value of any investments we hold which earn fixed interest rates, including subordinated loans, and senior and junior secured debt securities and loans, and also could increase our interest expense, thereby decreasing our net income. Also, an increase in market interest rates, which are currently at low levels relative to historical rates, may lead prospective purchasers of our common stock to expect a higher distribution yield and higher interest rates would likely increase our borrowing costs and potentially decrease funds available for distribution. Thus, higher market interest rates could cause the market price of our common stock and preferred stock to decrease.

A further downgrade of the U.S. credit rating and economic crisis in Europe could negatively impact our business, financial condition and earnings.

Although U.S. lawmakers passed legislation to raise the federal debt ceiling and Standard & Poor’s Ratings Services affirmed its AA+ long-term sovereign credit rating on the United States and revised the outlook on the long-term rating from negative to stable in June of 2013, U.S. debt ceiling and budget deficit concerns together with signs of deteriorating sovereign debt conditions in Europe continue to present the possibility of a credit-rating downgrade, economic slowdowns, or a recession for the United States. The impact of any further downgrades to the U.S. government’s sovereign credit rating or downgraded sovereign credit ratings of European countries or the Russian Federation, or their perceived creditworthiness could adversely affect the U.S. and global financial markets and economic conditions. These developments, along with any further European sovereign debt issues, could cause interest rates and borrowing costs to rise, which may negatively impact our ability to access the debt markets on favorable terms. Continued adverse economic conditions could have a material adverse effect on our business, financial condition and results of operations.

We may experience fluctuations in our quarterly and annual results based on the impact of inflation in the U.S.

The majority of our portfolio companies are in industries that are directly impacted by inflation, such as consumer goods and services and manufacturing. Our portfolio companies may not be able to pass on to customers increases in their costs of operations which could greatly affect their operating results, impacting their ability to repay our loans. In addition, any projected future decreases in our portfolio companies’ operating results due to inflation could adversely impact the fair value of those investments. Any decreases in the fair value of our investments could result in future unrealized losses and therefore reduce our net assets resulting from operations.

Risks Related to Our Investments

We operate in a highly competitive market for investment opportunities.

There has been increased competitive pressure in the BDC and investment company marketplace for senior and senior subordinated debt, resulting in lower yields for increasingly riskier investments. A large number of entities compete with us and make the types of investments that we seek to make in small and medium-sized companies. We compete with public and private buyout funds, commercial and investment banks, commercial financing companies, and, to the extent that they provide an alternative form of financing, hedge funds. Many of our competitors are substantially larger and have considerably greater financial, technical and marketing resources than we do. For example, some competitors may have a lower cost of funds and access to funding sources that are not available to us. In addition, some of our competitors may have higher risk tolerances or different risk assessments, which would allow them to consider a wider variety of investments and establish more relationships than us. Furthermore, many of our competitors are not subject to the regulatory restrictions that the 1940 Act

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imposes on us as a BDC. The competitive pressures we face could have a material adverse effect on our business, financial condition and results of operations. Also, as a result of this competition, we may not be able to take advantage of attractive investment opportunities from time to time and we can offer no assurance that we will be able to identify and make investments that are consistent with our investment objective. We do not seek to compete based on the interest rates we offer, and we believe that some of our competitors may make loans with interest rates that will be comparable to or lower than the rates we offer. We may lose investment opportunities if we do not match our competitors’ pricing, terms, and structure. However, if we match our competitors’ pricing, terms, and structure, we may experience decreased net interest income and increased risk of credit loss.

Our investments in small and medium-sized portfolio companies are extremely risky and could cause you to lose all or a part of your investment.

Investments in small and medium-sized portfolio companies are subject to a number of significant risks including the following:

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Because the loans we make and equity securities we receive when we make loans are not publicly traded, there is uncertainty regarding the value of our privately held securities that could adversely affect our determination of our net asset value (“NAV”).

Our portfolio investments are, and we expect will continue to be, in the form of securities that are not publicly traded. The fair value of securities and other investments that are not publicly traded may not be readily determinable. Our Board of Directors has ultimate responsibility for reviewing and approving, in good faith, the fair value of our investments, based on the Policy. Our Board of Directors reviews valuation recommendations that are provided by the Valuation Team. In valuing our investment portfolio, several techniques are used, including, a total enterprise value approach, a yield analysis, market quotes, and independent third party assessments. Currently, Standard & Poor’s Securities Evaluation, Inc. provides estimates of fair value on our proprietary debt investments and we use another independent valuation firm to provide valuation inputs for our significant equity investments, including earnings multiple ranges, as well as other information. In addition to these techniques, other factors are considered when determining fair value of our investments, including but limited to: the nature and realizable value of the collateral, including external parties’ guaranties; any relevant offers or letters of intent to acquire the portfolio company; and the markets in which the portfolio company operates. If applicable, new and follow-on proprietary debt and equity investments made during the current three month reporting period ended September 30, 2015 are generally valued at original cost basis. For additional information on our valuation policies, procedures and processes, refer to Note 2—Summary of Significant Accounting Policies in the notes to our accompanying Consolidated Financial Statements included elsewhere in this prospectus.

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Fair value measurements of our investments may involve subjective judgments and estimates and due to the inherent uncertainty of determining these fair values, the fair value of our investments may fluctuate from period to period. Additionally, changes in the market environment and other events that may occur over the life of the investment may cause the gains or losses ultimately realized on these investments to be different than the valuations currently assigned. Further, such investments are generally subject to legal and other restrictions on resale or otherwise are less liquid than publicly traded securities. If we were required to liquidate a portfolio investment in a forced or liquidation sale, we could realize significantly less than the value at which it is recorded.

Our NAV would be adversely affected if the fair value of our investments that are approved by our Board of Directors are higher than the values that we ultimately realize upon the disposal of such securities.

Our most recent NAV was calculated on September 30, 2015 and our NAV when calculated effective December 31, 2015 and thereafter may be higher or lower.

As of September 30, 2015, our NAV per share was $9.06, which was based on the fair value our investments that were reviewed and approved by the Valuation Committee and Board of Directors in connection with financial statements that were audited by our independent registered public accounting firm. NAV per share as of December 31, 2015 may be higher or lower than $9.06 based on potential changes in valuations, our issuance of 2.3 million shares of common stock in October and November 2015, or dividends paid and earnings for the quarter then ended. Our Board of Directors determines the fair value of our portfolio investments on a quarterly basis and if our December 31, 2015 fair value is less than the September 30, 2015 fair value, we will record an unrealized loss on our investment portfolio. If the fair value is greater, we will record an unrealized gain on our investment portfolio. Upon publication of our next quarterly NAV per share determination (generally in our next Quarterly Report on Form 10-Q), the market price of our common stock may fluctuate materially.

The valuation process for certain of our portfolio holdings creates a conflict of interest.

A substantial portion of our portfolio investments are made in the form of securities that are not publicly traded. As a result, our Board of Directors determines the fair value of these securities in good faith pursuant the Policy. In connection with that determination, the Valuation Team prepares portfolio company valuations based upon the most recent portfolio company financial statements available and projected financial results of each portfolio company. The participation of the Adviser’s investment professionals in our valuation process, and the pecuniary interest in the Adviser by Mr. Gladstone, may result in a conflict of interest as the management fees that we pay the Adviser are based on our gross assets less cash.

The lack of liquidity of our privately held investments may adversely affect our business.

We will generally make investments in private companies whose securities are not traded in any public market. Substantially all of the investments we presently hold and the investments we expect to acquire in the future are, and will be, subject to legal and other restrictions on resale and will otherwise be less liquid than publicly traded securities. The illiquidity of our investments may make it difficult for us to quickly obtain cash equal to the value at which we record our investments if the need arises. This could cause us to miss important investment opportunities. In addition, if we are required to liquidate all or a portion of our portfolio quickly, we may record substantial realized losses upon liquidation. We may also face other restrictions on our ability to liquidate an investment in a portfolio company to the extent that we, the Adviser, or our respective officers, employees or affiliates have material non-public information regarding such portfolio company.

Due to the uncertainty inherent in valuing these securities, the Adviser’s determinations of fair value may differ materially from the values that could be obtained if a ready market for these securities existed. Our NAV could be materially affected if the Adviser’s determinations regarding the fair value of our investments are materially different from the values that we ultimately realize upon our disposal of such securities.

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When we are a debt or minority equity investor in a portfolio company, which we expect will generally be the case, we may not be in a position to control the entity, and its management may make decisions that could decrease the value of our investment.

We anticipate that most of our investments will continue to be either debt or minority equity investments in our portfolio companies. Therefore, we are and will remain subject to the risk that a portfolio company may make business decisions with which we disagree, and the shareholders and management of such company may take risks or otherwise act in ways that do not serve our best interests. As a result, a portfolio company may make decisions that could decrease the value of our portfolio holdings.

In addition, we will generally not be in a position to control any portfolio company by investing in its debt securities. This is particularly true when we invest in syndicated loans, which are loans made by a larger group of investors whose investment objectives may not be completely aligned with ours. As of September 30, 2015, syndicated loans made up approximately 15.0% of our portfolio at cost, or $61.4 million. We therefore are subject to the risk that other lenders in these investments may make decisions that could decrease the value of our portfolio holdings.

We typically invest in transactions involving acquisitions, buyouts and recapitalizations of companies, which will subject us to the risks associated with change in control transactions.

Our strategy, in part, includes making debt and equity investments in companies in connection with acquisitions, buyouts and recapitalizations, which subjects us to the risks associated with change in control transactions. Change in control transactions often present a number of uncertainties. Companies undergoing change in control transactions often face challenges retaining key employees and maintaining relationships with customers and suppliers. While we hope to avoid many of these difficulties by participating in transactions where the management team is retained and by conducting thorough due diligence in advance of our decision to invest, if our portfolio companies experience one or more of these problems, we may not realize the value that we expect in connection with our investments, which would likely harm our operating results and financial condition.

Our portfolio companies may incur debt that ranks equally with, or senior to, our investments in such companies.

We invest primarily in debt securities issued by our portfolio companies. In some cases portfolio companies will be permitted to have other debt that ranks equally with, or senior to, the debt securities in which we invest. By their terms, such debt instruments may provide that the holders thereof are entitled to receive payment of interest and principal on or before the dates on which we are entitled to receive payments in respect of the debt securities in which we invest. Also, in the event of insolvency, liquidation, dissolution, reorganization, or bankruptcy of a portfolio company, holders of debt instruments ranking senior to our investment in that portfolio company would typically be entitled to receive payment in full before we receive any distribution in respect of our investment. After repaying such senior creditors, such portfolio company may not have any remaining assets to use for repaying its obligation to us. In the case of debt ranking equally with debt securities in which we invest, we would have to share on an equal basis any distributions with other creditors holding such debt in the event of an insolvency, liquidation, dissolution, reorganization, or bankruptcy of a portfolio company.

We may be unable to invest a significant portion of the net proceeds from an offering or from exiting an investment or other capital on acceptable terms, which could harm our financial condition and operating results.

Delays in investing the net proceeds raised in an offering or from exiting an investment or other capital may cause our performance to be worse than that of other fully invested BDCs or other lenders or investors pursuing comparable investment strategies. We cannot assure you that we will be able to identify any investments that meet our investment objective or that any investment that we make will produce a positive return. We may be unable to invest the net proceeds of any offering or from exiting an investment or other capital on acceptable terms within the time period that we anticipate or at all, which could harm our financial condition and operating results. Prepayments of our investments by our portfolio companies could adversely impact our results of operations and reduce our return on equity.

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In addition to risks associated with delays in investing our capital, we are also subject to the risk that investments we make in our portfolio companies may be repaid prior to maturity. For the year ended September 30, 2015, we received principal payments of a combined $40.3 million, of which only $2.5 million resulted from one portfolio company who paid off early at par. We will first use any proceeds from prepayments to repay any borrowings outstanding on our revolving line of credit. In the event that funds remain after repayment of our outstanding borrowings, then we will generally reinvest these proceeds in government securities, pending their future investment in new debt and/or equity securities. These government securities will typically have substantially lower yields than the debt securities being prepaid and we could experience significant delays in reinvesting these amounts. As a result, our results of operations could be materially adversely affected if one or more of our portfolio companies elect to prepay amounts owed to us. Additionally, prepayments could negatively impact our return on equity, which could result in a decline in the market price of our common stock.

Higher taxation of our portfolio companies may impact our quarterly and annual operating results.

The recession’s adverse effect on federal, state, and municipality revenues may induce these government entities to raise various taxes to make up for lost revenues. Additional taxation may have an adverse affect on our portfolio companies’ earnings and reduce their ability to repay our loans to them, thus affecting our quarterly and annual operating results.

Our portfolio is concentrated in a limited number of companies and industries, which subjects us to an increased risk of significant loss if any one of these companies does not repay us or if the industries experience downturns.

As of September 30, 2015, we had investments in 48 portfolio companies, of which there were five investments that comprised approximately $109.6 million or 30.0% of our total investment portfolio, at fair value. A consequence of a concentration in a limited number of investments is that the aggregate returns we realize may be substantially adversely affected by the unfavorable performance of a small number of such investments or a substantial write-down of any one investment. Beyond our regulatory and income tax diversification requirements, we do not have fixed guidelines for industry concentration and our investments could potentially be concentrated in relatively few industries. In addition, while we do not intend to invest 25.0% or more of our total assets in a particular industry or group of industries at the time of investment, it is possible that as the values of our portfolio companies change, one industry or a group of industries may comprise in excess of 25.0% of the value of our total assets. As a result, a downturn in an industry in which we have invested a significant portion of our total assets could have a materially adverse effect on us. As of September 30, 2015, our largest industry concentrations of our total investments at fair value were in diversified/conglomerate manufacturing companies, representing 15.4%; oil and gas companies, representing 14.0%; and healthcare, education and childcare companies, representing 12.3%. Therefore, we are susceptible to the economic circumstances in these industries, and a downturn in one or more of these industries could have a material adverse effect on our results of operations and financial condition.

Our investments are typically long term and will require several years to realize liquidation events.

Since we generally make five to seven year term loans and hold our loans and related warrants or other equity positions until the loans mature, you should not expect realization events, if any, to occur over the near term. In addition, we expect that any warrants or other equity positions that we receive when we make loans may require several years to appreciate in value and we cannot give any assurance that such appreciation will occur.

The disposition of our investments may result in contingent liabilities.

Currently, all of our investments involve private securities. In connection with the disposition of an investment in private securities, we may be required to make representations about the business and financial affairs of the underlying portfolio company typical of those made in connection with the sale of a business. We may also be required to indemnify the purchasers of such investment to the extent that any such representations turn out to be

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inaccurate or with respect to certain potential liabilities. These arrangements may result in contingent liabilities that ultimately yield funding obligations that must be satisfied through our return of certain distributions previously made to us.

There may be circumstances where our debt investments could be subordinated to claims of other creditors or we could be subject to lender liability claims.

Even though we have structured some of our investments as senior loans, if one of our portfolio companies were to go bankrupt, depending on the facts and circumstances, including the extent to which we actually provided managerial assistance to that portfolio company, a bankruptcy court might re-characterize our debt investments and subordinate all, or a portion, of our claims to that of other creditors. Holders of debt instruments ranking senior to our investments typically would be entitled to receive payment in full before we receive any distributions. After repaying such senior creditors, such portfolio company may not have any remaining assets to use to repay its obligation to us. We may also be subject to lender liability claims for actions taken by us with respect to a borrower’s business or in instances in which we exercised control over the borrower. It is possible that we could become subject to a lender’s liability claim, including as a result of actions taken in rendering significant managerial assistance.

Portfolio company litigation could result in additional costs and the diversion of management time and resources.

In the course of investing in and often providing significant managerial assistance to certain of our portfolio companies, certain persons employed by the Adviser may serve as directors on the boards of such companies. To the extent that litigation arises out of our investments in these companies, even if without merit, we or such employees may be named as defendants in such litigation, which could result in additional costs, including defense costs, and the diversion of management time and resources.

We may not realize gains from our equity investments and other yield enhancements.

When we make a subordinated loan, we may receive warrants to purchase stock issued by the borrower or other yield enhancements, such as success fees. Our goal is to ultimately dispose of these equity interests and realize gains upon our disposition of such interests. We expect that, over time, the gains we realize on these warrants and other yield enhancements will offset any losses we experience on loan defaults. However, any warrants we receive may not appreciate in value and, in fact, may decline in value and any other yield enhancements, such as success fees, may not be realized. Accordingly, we may not be able to realize gains from our equity interests or other yield enhancements and any gains we do recognize may not be sufficient to offset losses we experience on our loan portfolio.

Any unrealized depreciation we experience on our investment portfolio may be an indication of future realized losses, which could reduce our income available for distribution.

As a BDC we are required to carry our investments at market value or, if no market value is ascertainable, at fair value as determined in good faith by or under the direction of our Board of Directors. We will record decreases in the market values or fair values of our investments as unrealized depreciation. Since our inception, we have, at times, incurred a cumulative net unrealized depreciation of our portfolio. Any unrealized depreciation in our investment portfolio could result in realized losses in the future and ultimately in reductions of our income available for distribution to stockholders in future periods.

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Risks Related to Our External Financing

In addition to regulatory limitations on our ability to raise capital, our revolving line of credit contains various covenants which, if not complied with, could accelerate our repayment obligations under the facility, thereby materially and adversely affecting our liquidity, financial condition, results of operations and ability to pay distributions.

We will have a continuing need for capital to finance our investments. As of September 30, 2015, we had $127.3 million in borrowings outstanding under our fifth amended and restated credit agreement (our “Credit Facility”), which provides for maximum borrowings of $170.0 million, with a revolving period end date of January 19, 2019. Our Credit Facility permits us to fund additional loans and investments as long as we are within the conditions set forth in the credit agreement. Our Credit Facility contains covenants that require our wholly-owned subsidiary Gladstone Business Loan (“Business Loan”) to maintain its status as a separate legal entity, prohibit certain significant corporate transactions (such as mergers, consolidations, liquidations or dissolutions) and restrict material changes to our credit and collection policies without lenders’ consent. The Credit Facility also limits distributions to our stockholders on a fiscal year basis to the sum of our net investment income, net capital gains and amounts deemed to have been paid during the prior year in accordance with Section 855(a) of the Code. We are also subject to certain limitations on the type of loan investments we can make, including restrictions on geographic concentrations, sector concentrations, loan size, interest rate type, payment frequency and status, average life and lien property. Our Credit Facility further requires us to comply with other financial and operational covenants, which obligate us to, among other things, maintain certain financial ratios, including asset and interest coverage, and a minimum number of 20 obligors in the borrowing base. Additionally, we are subject to a performance guaranty that requires us to maintain (i) a minimum net worth (defined in our Credit Facility to include our mandatorily redeemable preferred stock) of $205.0 million plus 50.0% of all equity and subordinated debt raised after May 1, 2015, which equates to $205.0 million as of September 30, 2015, (ii) asset coverage with respect to “senior securities representing indebtedness” of at least 200.0%, in accordance with Section 18 of the 1940 Act and (iii) our status as a BDC under the 1940 Act and as a RIC under the Code. As of September 30, 2015, and as defined in the performance guaranty of our Credit Facility, we were in compliance with all of our Credit Facility covenants; however, our continued compliance depends on many factors, some of which are beyond our control.

Given the continued uncertainty in the capital markets, the cumulative unrealized depreciation in our portfolio may increase in future periods and threaten our ability to comply with the minimum net worth covenant and other covenants under our Credit Facility. Our failure to satisfy these covenants could result in foreclosure by our lenders, which would accelerate our repayment obligations under the facility and thereby have a material adverse effect on our business, liquidity, financial condition, results of operations and ability to pay distributions to our stockholders.

Any inability to renew, extend or replace our Credit Facility on terms favorable to us, or at all, could adversely impact our liquidity and ability to fund new investments or maintain distributions to our stockholders.

The revolving period end date of our Credit Facility is January 19, 2019 (the “Revolving Period End Date”) and if our Credit Facility is not renewed or extended by the Revolving Period End Date, all principal and interest will be due and payable on or before May 1, 2020. Subject to certain terms and conditions, our Credit Facility may be expanded to a total of $250.0 million through the addition of other lenders to the facility. However, if additional lenders are unwilling to join the facility on its terms, we will be unable to expand the facility and thus will continue to have limited availability to finance new investments under our Credit Facility. There can be no guarantee that we will be able to renew, extend or replace our Credit Facility upon its Revolving Period End Date on terms that are favorable to us, if at all. Our ability to expand our Credit Facility, and to obtain replacement financing at or before the Revolving Period End Date, will be constrained by then-current economic conditions affecting the credit markets. In the event that we are not able to expand our Credit Facility, or to renew, extend or refinance our Credit Facility by the Revolving Period End Date, this could have a material adverse effect on our liquidity and ability to fund new investments, our ability to make distributions to our stockholders and our ability to qualify as a RIC under the Code.

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If we are unable to secure replacement financing, we may be forced to sell certain assets on disadvantageous terms, which may result in realized losses, and such realized losses could materially exceed the amount of any unrealized depreciation on these assets as of our most recent balance sheet date, which would have a material adverse effect on our results of operations. Such circumstances would also increase the likelihood that we would be required to redeem some or all of our outstanding mandatorily redeemable preferred stock, which could potentially require us to sell more assets. In addition to selling assets, or as an alternative, we may issue equity in order to repay amounts outstanding under our Credit Facility. Based on the recent trading prices of our stock, such an equity offering may have a substantial dilutive impact on our existing stockholders’ interest in our earnings, assets and voting interest in us. If we are not able to renew, extend or refinance our Credit Facility prior to its maturity, it could result in significantly higher interest rates and related charges and may impose significant restrictions on the use of borrowed funds to fund investments or maintain distributions to stockholders.

Our business plan is dependent upon external financing, which is constrained by the limitations of the 1940 Act.

The last equity offering we completed was on October 27, 2015 and November 5, 2015 for a total of 2.3 million shares of common stock at a public offering price of $8.55 per share, and there can be no assurance that we will be able to raise capital through issuing equity in the near future. Our business requires a substantial amount of cash to operate and grow. We may acquire such additional capital from the following sources:

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We financed certain of our investments with borrowed money and capital from the issuance of senior securities, which will magnify the potential for gain or loss on amounts invested and may increase the risk of investing in us.

The following table illustrates the effect of leverage on returns from an investment in our common stock assuming various annual returns on our portfolio, net of expenses. The calculations in the table below are hypothetical, and actual returns may be higher or lower than those appearing in the table below.

Based on the outstanding balance on our Credit Facility of $127.3 million at cost, as of September 30, 2015, the effective annual interest rate of 4.1% as of that date, and aggregate liquidation preference of our Series 2021 Term Preferred Stock of $61.0 million, our investment portfolio at fair value would have had to produce an annual return of at least 2.0% to cover annual interest payments on the outstanding debt and dividends on our Series 2021 Term Preferred Stock.

A change in interest rates may adversely affect our profitability and our hedging strategy may expose us to additional risks.

We anticipate using a combination of equity and long-term and short-term borrowings to finance our investment activities. As a result, a portion of our income will depend upon the difference between the rate at which we borrow funds and the rate at which we loan these funds. Higher interest rates on our borrowings will decrease the overall return on our portfolio.

Ultimately, we expect approximately 90.0% of the loans in our portfolio to be at variable rates determined on the basis of the LIBOR and approximately 10.0% to be at fixed rates. As of September 30, 2015, based on the total principal balance of debt outstanding, our portfolio consisted of approximately 84.1% of loans at variable rates with floors, approximately 15.9% at fixed rates.

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We currently hold one interest rate cap agreement. While hedging activities may insulate us against adverse fluctuations in interest rates, they may also limit our ability to participate in the benefits of lower interest rates with respect to the hedged portfolio. Adverse developments resulting from changes in interest rates or any future hedging transactions could have a material adverse effect on our business, financial condition and results of operations. Our ability to receive payments pursuant to an interest rate cap agreement is linked to the ability of the counter-party to that agreement to make the required payments. To the extent that the counter-party to the agreement is unable to pay pursuant to the terms of the agreement, we may lose the hedging protection of the interest rate cap agreement. For additional information on market interest rate fluctuations, see “Management’s Discussion and Analysis of Financial Condition and Results of Operations—Quantitative and Qualitative Disclosures About Market Risk.”

Risks Related to Our Regulation and Structure

We will be subject to corporate-level tax if we are unable to satisfy Code requirements for RIC qualification.

To maintain our qualification as a RIC, we must meet income source, asset diversification, and annual distribution requirements. The annual distribution requirement is satisfied if we distribute at least 90.0% of our investment company taxable income to our stockholders on an annual basis. Because we use leverage, we are subject to certain asset coverage ratio requirements under the 1940 Act and could, under certain circumstances, be restricted from making distributions necessary to qualify as a RIC. Warrants we receive with respect to debt investments will create “original issue discount,” which we must recognize as ordinary income over the term of the debt investment or PIK interest which is accrued generally over the term of the debt investment but not paid in cash, both of which will increase the amounts we are required to distribute to maintain RIC status. Because such OIDs and PIK interest will not produce distributable cash for us at the same time as we are required to make distributions, we will need to use cash from other sources to satisfy such distribution requirements. The asset diversification requirements must be met at the end of each calendar quarter. If we fail to meet these tests, we may need to quickly dispose of certain investments to prevent the loss of RIC status. Since most of our investments will be illiquid, such dispositions, if even possible, may not be made at prices advantageous to us and, in fact, may result in substantial losses. If we fail to qualify as a RIC for any reason and become fully subject to corporate income tax, the resulting corporate taxes could substantially reduce our net assets, the amount of income available for distribution, and the actual amount distributed. Such a failure would have a material adverse effect on us and our shares. For additional information regarding asset coverage ratio and RIC requirements, see “Business—Material U.S. Federal Income Tax Considerations—Regulated Investment Company Status.”

From time to time, some of our debt investments may include success fees that would generate payments to us if the business is ultimately sold. Because the satisfaction of these success fees, and the ultimate payment of these fees, is uncertain, we generally only recognize them as income when the payment is received. Success fee amounts are characterized as ordinary income for tax purposes and, as a result, we are required to distribute such amounts to our stockholders in order to maintain RIC status.

If we do not invest a sufficient portion of our assets in qualifying assets, we could fail to qualify as a BDC or be precluded from investing according to our current business strategy.

As a BDC, we may not acquire any assets other than “qualifying assets” unless, at the time of and after giving effect to such acquisition, at least 70% of our total assets are qualifying assets.

We believe that most of the investments that we may acquire in the future will constitute qualifying assets. However, we may be precluded from investing in what we believe to be attractive investments if such investments are not qualifying assets for purposes of the 1940 Act. If we do not invest a sufficient portion of our assets in qualifying assets, we could violate the 1940 Act provisions applicable to BDCs. As a result of such violation, specific rules under the 1940 Act could prevent us, for example, from making follow-on investments in existing portfolio companies (which could result in the dilution of our position) or could require us to dispose of

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investments at inappropriate times in order to come into compliance with the 1940 Act. If we need to dispose of such investments quickly, it could be difficult to dispose of such investments on favorable terms. We may not be able to find a buyer for such investments and, even if we do find a buyer, we may have to sell the investments at a substantial loss. Any such outcomes would have a material adverse effect on our business, financial condition, results of operations and cash flows.

If we do not maintain our status as a BDC, we would be subject to regulation as a registered closed-end investment company under the 1940 Act. As a registered closed-end investment company, we would be subject to substantially more regulatory restrictions under the 1940 Act, which would significantly decrease our operating flexibility.

Changes in laws or regulations governing our operations, or changes in the interpretation thereof, and any failure by us to comply with laws or regulations governing our operations may adversely affect our business.

We and our portfolio companies are subject to regulation by laws at the local, state and federal levels. These laws and regulations, as well as their interpretation, may be changed from time to time. Accordingly, any change in these laws or regulations, or their interpretation, or any failure by us or our portfolio companies to comply with these laws or regulations may adversely affect our business. For additional information regarding the regulations to which we are subject, see “Business—Material U.S. Federal Income Tax Considerations” and “Business—Regulation as a Business Development Company.”

We are subject to restrictions that may discourage a change of control. Certain provisions contained in our charter and Maryland law may prohibit or restrict a change of control and adversely impact the price of our shares.

Our Board of Directors is divided into three classes, with the term of the directors in each class expiring at the annual meeting of stockholders held in the third year following the year of their election. At each annual meeting of stockholders, the successors to the class of directors whose term expires at such meeting will be elected to hold office for a term expiring at the annual meeting of stockholders held in the third year following the year of their election. After election, a director may only be removed by our stockholders for cause. Election of directors for staggered terms with limited rights to remove directors makes it more difficult for a hostile bidder to acquire control of us. The existence of this provision may negatively impact the price of our securities and may discourage third-party bids to acquire our securities. This provision may reduce any premiums paid to stockholders in a change in control transaction.

Certain provisions of Maryland law applicable to us prohibit business combinations with:

These prohibitions last for five years after the most recent date on which the interested stockholder became an interested stockholder. Thereafter, any business combination with the interested stockholder must be recommended by our Board of Directors and approved by the affirmative vote of at least 80.0% of the votes entitled to be cast by holders of our outstanding shares of common stock and two-thirds of the votes entitled to be cast by holders of our common stock other than shares held by the interested stockholder. These requirements could have the effect of inhibiting a change in control even if a change in control were in our stockholders’ interest. These provisions of Maryland law do not apply, however, to business combinations that are approved or exempted by our Board of Directors prior to the time that someone becomes an interested stockholder.

Our articles of incorporation permit our Board of Directors to issue up to 50.0 million shares of capital stock. Our Board of Directors may classify or reclassify any unissued common stock or preferred stock and establish the

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preferences, conversion or other rights, voting powers, restrictions, limitations as to distributions, qualifications and terms or conditions of redemption of any such stock. Thus, our Board of Directors could authorize the issuance of preferred stock with terms and conditions that could have a priority as to distributions and amounts payable upon liquidation over the rights of the holders of our common stock, which it did in connection with our issuance of approximately 2.4 million shares of Series 2021 Term Preferred Stock. Preferred stock, including our Series 2021 Term Preferred Stock, could also have the effect of delaying, deferring or preventing a change in control of us, including an extraordinary transaction (such as a merger, tender offer or sale of all or substantially all of our assets) that might provide a premium price for holders of our common stock.

Risks Related to Our External Management

We are dependent upon our key management personnel and the key management personnel of the Adviser, particularly David Gladstone, Terry Lee Brubaker and Robert L. Marcotte and on the continued operations of the Adviser, for our future success.

We have no employees. Our chief executive officer, chief operating officer, chief financial officer and treasurer, and the employees of the Adviser, do not spend all of their time managing our activities and our investment portfolio. We are particularly dependent upon David Gladstone, Terry Lee Brubaker and Robert L. Marcotte for their experience, skills and networks. Our executive officers and the employees of the Adviser allocate some, and in some cases a material portion, of their time to businesses and activities that are not related to our business. We have no separate facilities and are completely reliant on the Adviser, which has significant discretion as to the implementation and execution of our business strategies and risk management practices. We are subject to the risk of discontinuation of the Adviser’s operations or termination of the Advisory Agreement and the risk that, upon such event, no suitable replacement will be found. We believe that our success depends to a significant extent upon the Adviser and that discontinuation of its operations or the loss of its key management personnel could have a material adverse effect on our ability to achieve our investment objectives.

Our success depends on the Adviser’s ability to attract and retain qualified personnel in a competitive environment.

The Adviser experiences competition in attracting and retaining qualified personnel, particularly investment professionals and senior executives, and we may be unable to maintain or grow our business if we cannot attract and retain such personnel. The Adviser’s ability to attract and retain personnel with the requisite credentials, experience and skills depends on several factors including, but not limited to, its ability to offer competitive wages, benefits and professional growth opportunities. The Adviser competes with investment funds (such as private equity funds and mezzanine funds) and traditional financial services companies for qualified personnel, many of which have greater resources than us. Searches for qualified personnel may divert management’s time from the operation of our business. Strain on the existing personnel resources of the Adviser, in the event that it is unable to attract experienced investment professionals and senior executives, could have a material adverse effect on our business.

In addition, we depend upon the Adviser to maintain its relationships with private equity sponsors, placement agents, investment banks, management groups and other financial institutions, and we expect to rely to a significant extent upon these relationships to provide us with potential investment opportunities. If the Adviser or members of our investment team fail to maintain such relationships, or to develop new relationships with other sources of investment opportunities, we will not be able to grow our investment portfolio. In addition, individuals with whom the Adviser has relationships are not obligated to provide us with investment opportunities, and we can offer no assurance that these relationships will generate investment opportunities for us in the future.

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The Adviser can resign on 60 days’ notice, and we may not be able to find a suitable replacement within that time, resulting in a disruption in our operations that could adversely affect our financial condition, business and results of operations.

The Adviser has the right to resign under the Advisory Agreement at any time upon not less than 60 days’ written notice, whether we have found a replacement or not. If the Adviser resigns, we may not be able to find a new investment adviser or hire internal management with similar expertise and ability to provide the same or equivalent services on acceptable terms within 60 days, or at all. If we are unable to do so quickly, our operations are likely to experience a disruption, our financial condition, business and results of operations as well as our ability to pay distributions are likely to be adversely affected and the market price of our shares may decline. In addition, the coordination of our internal management and investment activities is likely to suffer if we are unable to identify and reach an agreement with a single institution or group of executives having the expertise possessed by the Adviser and its affiliates. Even if we are able to retain comparable management, whether internal or external, the integration of such management and their lack of familiarity with our investment objective may result in additional costs and time delays that may adversely affect our business, financial condition, results of operations and cash flows.

Our incentive fee may induce the Adviser to make certain investments, including speculative investments.

The management compensation structure that has been implemented under the Advisory Agreement may cause the Adviser to invest in high-risk investments or take other risks. In addition to its management fee, the Adviser is entitled under the Advisory Agreement to receive incentive compensation based in part upon our achievement of specified levels of income. In evaluating investments and other management strategies, the opportunity to earn incentive compensation based on net income may lead the Adviser to place undue emphasis on the maximization of net income at the expense of other criteria, such as preservation of capital, maintaining sufficient liquidity, or management of credit risk or market risk, in order to achieve higher incentive compensation. Investments with higher yield potential are generally riskier or more speculative. This could result in increased risk to the value of our investment portfolio.

We may be obligated to pay the Adviser incentive compensation even if we incur a loss.

The Advisory Agreement entitles the Adviser to incentive compensation for each fiscal quarter in an amount equal to a percentage of the excess of our investment income for that quarter (before deducting incentive compensation, net operating losses and certain other items) above a threshold return for that quarter. When calculating our incentive compensation, our pre-incentive fee net investment income excludes realized and unrealized capital losses that we may incur in the fiscal quarter, even if such capital losses result in a net loss on our statement of operations for that quarter. Thus, we may be required to pay the Adviser incentive compensation for a fiscal quarter even if there is a decline in the value of our portfolio or we incur a net loss for that quarter. For additional information on incentive compensation under the Advisory Agreement with the Adviser, see “Business—Transactions with Related Parties.”

We may be required to pay the Adviser incentive compensation on income accrued, but not yet received in cash.

That part of the incentive fee payable by us that relates to our net investment income is computed and paid on income that may include interest that has been accrued but not yet received in cash, such as debt instruments with PIK interest or OID. If a portfolio company defaults on a loan, it is possible that such accrued interest previously used in the calculation of the incentive fee will become uncollectible. Consequently, we may make incentive fee payments on income accruals that we may not collect in the future and with respect to which we do not have a clawback right against the Adviser. Our OID investments totaled $54.5 million as of September 30, 2015, at cost, which are primarily all syndicated loan investments. For the year ended September 30, 2015, we incurred $0.3 million of OID income and the unamortized balance of OID investments as of September 30, 2015 totaled $0.6 million. As of September 30, 2015, we had four investments which had a PIK interest component and we recorded PIK interest income of $0.6 million during the year ended September 30, 2015. We collected $0 in PIK interest in cash for the year ended September 30, 2015.

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The Adviser’s failure to identify and invest in securities that meet our investment criteria or perform its responsibilities under the Advisory Agreement would likely adversely affect our ability for future growth.

Our ability to achieve our investment objectives will depend on our ability to grow, which in turn will depend on the Adviser’s ability to identify and invest in securities that meet our investment criteria. Accomplishing this result on a cost-effective basis will be largely a function of the Adviser’s structuring of the investment process, its ability to provide competent and efficient services to us, and our access to financing on acceptable terms. The senior management team of the Adviser has substantial responsibilities under the Advisory Agreement. In order to grow, the Adviser will need to hire, train, supervise, and manage new employees successfully. Any failure to manage our future growth effectively would likely have a material adverse effect on our business, financial condition, and results of operations.

There are significant potential conflicts of interest, including with the Adviser, which could impact our investment returns.

Our executive officers and directors, and the officers and directors of the Adviser, serve or may serve as officers, directors, or principals of entities that operate in the same or a related line of business as we do or of investment funds managed by our affiliates. Accordingly, they may have obligations to investors in those entities, the fulfillment of which might not be in the best interests of us or our stockholders. For example, Mr. Gladstone, our chairman and chief executive officer, is the president of Gladstone Land, chairman of the board and chief executive officer of the Adviser, Gladstone Investment, Gladstone Commercial and Gladstone Land. In addition, Mr. Brubaker, our vice chairman and chief operating officer, is the vice chairman and chief operating officer of the Adviser, Gladstone Investment, Gladstone Commercial and Gladstone Land. Mr. Marcotte is an executive managing director of the Adviser. Moreover, the Adviser may establish or sponsor other investment vehicles which from time to time may have potentially overlapping investment objectives with ours and accordingly may invest in, whether principally or secondarily, asset classes we target. While the Adviser generally has broad authority to make investments on behalf of the investment vehicles that it advises, the Adviser has adopted investment allocation procedures to address these potential conflicts and intends to direct investment opportunities to the Gladstone affiliate with the investment strategy that most closely fits the investment opportunity. Nevertheless, the management of the Adviser may face conflicts in the allocation of investment opportunities to other entities managed by the Adviser. As a result, it is possible that we may not be given the opportunity to participate in certain investments made by other funds managed by the Adviser. Our Board of Directors approved a revision of our investment objectives and strategies that became effective on January 1, 2013, which may enhance the potential for conflicts in the allocation of investment opportunities to us and other entities managed by the Adviser.

More specifically, in certain circumstances we may make investments in a portfolio company in which one of our affiliates has or will have an investment, subject to satisfaction of any regulatory restrictions and, where required, to the prior approval of our Board of Directors. As of September 30, 2015, our Board of Directors has approved the following types of co-investment transactions:

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Certain of our officers, who are also officers of the Adviser, may from time to time serve as directors of certain of our portfolio companies. If an officer serves in such capacity with one of our portfolio companies, such officer will owe fiduciary duties to stockholders of the portfolio company, which duties may from time to time conflict with the interests of our stockholders.

In the course of our investing activities, we will pay management and incentive fees to the Adviser and will reimburse the Administrator for certain expenses it incurs. As a result, investors in our common stock will invest on a “gross” basis and receive distributions on a “net” basis after expenses, resulting in, among other things, a lower rate of return than one might achieve through our investors themselves making direct investments. As a result of this arrangement, there may be times when the management team of the Adviser has interests that differ from those of our stockholders, giving rise to a conflict. In addition, as a BDC, we make available significant managerial assistance to our portfolio companies and provide other services to such portfolio companies. While, neither we nor the Adviser currently receives fees in connection with managerial assistance, the Adviser and Gladstone Securities have, at various times, including in the fiscal year ended September 30, 2015, provided other services to certain of our portfolio companies and received fees from the portfolio companies for these other services. Specifically, Gladstone Securities may be paid an investment banking fee in an amount not greater than 1% of our investment in a portfolio company at the closing of such investment. The investment banking fee is not credited against the base management fee. See “Management—Certain Transactions—Investment Banking Services.”

The Adviser is not obligated to provide a credit of the base management fee, which could negatively impact our earnings and our ability to maintain our current level of distributions to our stockholders.

The Advisory Agreement provides for a base management fee based on our gross assets. Since our 2007 fiscal year, our Board of Directors has accepted on a quarterly basis voluntary, unconditional and irrevocable credits to reduce the annual base management fee, which was previously 2.0%, but following an amendment to the Advisory Agreement, effective July 1, 2015 is now 1.75%, on senior syndicated loan participations to 0.5% to the extent that proceeds resulting from borrowings were used to purchase such syndicated loan participations, and any waived fees may not be recouped by the Adviser in the future. However, the Adviser is not required to issue these or other credits of fees under the Advisory Agreement, and to the extent our investment portfolio grows in the future, we expect these fees will increase. If the Adviser does not issue these credits in future quarters, it could negatively impact our earnings and may compromise our ability to maintain our current level of distributions to our stockholders, which could have a material adverse impact on our stock price.

Our business model is dependent upon developing and sustaining strong referral relationships with investment bankers, business brokers and other intermediaries and any change in our referral relationships may impact our business plan.

We are dependent upon informal relationships with investment bankers, business brokers and traditional lending institutions to provide us with deal flow. If we fail to maintain our relationship with such funds or institutions, or if we fail to establish strong referral relationships with other funds, we will not be able to grow our portfolio of investments and fully execute our business plan.

Our base management fee may induce the Adviser to incur leverage.

The fact that our base management fee is payable based upon our gross assets, which would include any investments made with proceeds of borrowings, may encourage the Adviser to use leverage to make additional investments. Under certain circumstances, the use of increased leverage may increase the likelihood of default, which would disfavor holders of our securities. Given the subjective nature of the investment decisions made by the Adviser on our behalf, we will not be able to monitor this potential conflict of interest.

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Risks Related to an Investment in Our Securities

Shares of closed-end investment companies frequently trade at a discount from NAV.

Shares of closed-end investment companies frequently trade at a discount from NAV per common share. Since our inception, our common stock has at times traded above NAV, and at times below NAV per share. Subsequent to September 30, 2015, our common stock has traded at discounts of up to 10.3% of our NAV per share, which was $9.06 as of September 30, 2015. This characteristic of shares of closed-end investment companies is separate and distinct from the risk that our NAV per share will decline. As with any stock, the price of our shares will fluctuate with market conditions and other factors. If shares are sold, the price received may be more or less than the original investment. Whether investors will realize gains or losses upon the sale of our shares will not depend directly upon our NAV, but will depend upon the market price of the shares at the time of sale. Since the market price of our shares will be affected by such factors as the relative demand for and supply of the shares in the market, general market and economic conditions and other factors beyond our control, we cannot predict whether the shares will trade at, below or above our NAV.

Under the 1940 Act, we are generally not able to issue additional shares of our common stock at a price below NAV per share to purchasers other than our existing stockholders through a rights offering without first obtaining the approval of our common stockholders and our independent directors. Additionally, when our common stock is trading below its NAV per share, our dividend yield may exceed the weighted average returns that we would expect to realize on new investments that would be made with the proceeds from the sale of such stock, making it unlikely that we would determine to issue additional shares in such circumstances. Thus, for as long as our common stock may trade below NAV, we will be subject to significant constraints on our ability to raise capital through the issuance of common stock. Additionally, an extended period of time in which we are unable to raise capital may restrict our ability to grow and adversely impact our ability to increase or maintain our distributions.

The market price of our shares may fluctuate significantly.

The trading price of our common stock and our mandatorily redeemable preferred stock may fluctuate substantially. Due to the extreme volatility and disruptions that have affected the capital and credit markets over the past few years, our stock has experienced greater than usual stock price volatility.

The market price and marketability of our shares may from time to time be significantly affected by numerous factors, including many over which we have no control and that may not be directly related to us. These factors include, but are not limited to, the following:

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Fluctuations in the trading prices of our shares may adversely affect the liquidity of the trading market for our shares and, if we seek to raise capital through future equity financings, our ability to raise such equity capital.

We may experience fluctuations in our quarterly and annual operating results.

We may experience fluctuations in our quarterly and annual operating results due to a number of factors, including, among others, variations in our investment income, the interest rates payable on the debt securities we acquire, the default rates on such securities, variations in and the timing of the recognition of realized and unrealized gains or losses, the level of our expenses, the degree to which we encounter competition in our markets, and general economic conditions, including the impacts of inflation. The majority of our portfolio companies are in industries that are directly impacted by inflation, such as manufacturing and consumer goods and services. Our portfolio companies may not be able to pass on to customers increases in their costs of production which could greatly affect their operating results, impacting their ability to repay our loans. In addition, any projected future decreases in our portfolio companies’ operating results due to inflation could adversely impact the fair value of those investments. Any decreases in the fair value of our investments could result in future realized and unrealized losses and therefore reduce our net assets resulting from operations. As a result of these factors, results for any period should not be relied upon as being indicative of performance in future periods.

There is a risk that you may not receive distributions or that distributions may not grow over time.

We intend to distribute at least 90.0% of our investment company taxable income to our stockholders on a quarterly basis by paying monthly distributions. We expect to retain some or all net realized long-term capital gains by first offsetting them with realized capital losses, and secondly through a deemed distribution to supplement our equity capital and support the growth of our portfolio, although our Board of Directors may determine in certain cases to distribute these gains to our common stockholders. In addition, our Credit Facility restricts the amount of distributions we are permitted to make. We cannot assure you that we will achieve investment results or maintain a tax status that will allow or require any specified level of cash distributions. Further, the terms of our outstanding preferred stock may restrict our ability to pay distributions on our common stock or require us to redeem shares of preferred stock if we do not meet the required asset coverage ratio for “senior securities that are stock” and fail to cure such required asset coverage ratio within the applicable cure period. See “Risks Related to Our Regulation and Structure—We will be subject to corporate-level tax if we are unable to satisfy Code requirements for RIC qualification.”

Investing in our securities may involve an above average degree of risk.

The investments we make in accordance with our investment objective may result in a higher amount of risk than alternative investment options and a higher risk of volatility or loss of principal. Our investments in portfolio companies may be highly speculative, and therefore, an investment in our shares may not be suitable for someone with lower risk tolerance.

Distributions to our stockholders have included and may in the future include a return of capital.

Quarterly, our Board of Directors declares monthly distributions based on then current estimates of taxable income for each fiscal year, which may differ, and in the past have differed, from actual results. Because our

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distributions are based on estimates of taxable income that may differ from actual results, future distributions payable to our stockholders may also include a return of capital. Moreover, to the extent that we distribute amounts that exceed our current and accumulated earnings and profits, these distributions constitute a return of capital. A return of capital represents a return of a stockholder’s original investment in shares of our stock and should not be confused with a distribution from earnings and profits. Although return of capital distributions may not be taxable, such distributions may increase an investor’s tax liability for capital gains upon the sale of our shares by reducing the investor’s tax basis for such shares. Such returns of capital reduce our asset base and also adversely impact our ability to raise debt capital as a result of the leverage restrictions under the 1940 Act, which could have material adverse impact on our ability to make new investments.

The issuance of subscription rights to our existing stockholders may dilute the ownership and voting powers of existing stockholders in our common stock, dilute the NAV of their shares and have a material adverse effect on the trading price of our common stock.

There are significant capital raising constraints applicable to us under the 1940 Act when our common stock is trading below its NAV per share. In the event that we issue subscription rights to our existing stockholders to subscribe for and purchase additional shares of our common stock, there is a significant possibility that the rights offering will dilute the ownership interest and voting power of stockholders who do not fully exercise their subscription rights. Stockholders who do not fully exercise their subscription rights should expect that they will, upon completion of the rights offering, own a smaller proportional interest in us than would otherwise be the case if they fully exercised their subscription rights. In addition, because the subscription price of the rights offering is likely to be less than our most recently determined NAV per common share, our common stockholders are likely to experience an immediate dilution of the per share NAV of their shares as a result of the offer. As a result of these factors, any future rights offerings of our common stock, or our announcement of our intention to conduct a rights offering, could have a material adverse impact on the trading price of our common stock.

Common stockholders may incur dilution if we sell shares of our common stock in one or more offerings at prices below the then current NAV per share of our common stock.

At our most recent annual meeting of stockholders on February 12, 2015, our stockholders approved a proposal designed to allow us to sell shares of our common stock below the then current NAV per share of our common stock in one or more offerings for a period of one year from the date of such approval, subject to certain conditions (including, but not limited to, that the number of common shares issued and sold pursuant to such authority does not exceed 25.0% of our then outstanding common stock immediately prior to each such sale). Absent such stockholder approval, we would not be able to access the capital markets in an offering at below the then current NAV per share due to restrictions applicable to BDCs under the 1940 Act.

We exercised this right with our Board of Directors approval when we sold an aggregate of 131,462 shares of our common stock under our at-the-market program for gross proceeds of a combined $1.2 million at an average price of $8.89 per share, which was below our then current NAV of an average $9.41 per share during March and April 2015. In addition, subsequent to September 30, 2015, we exercised this right again with our Board of Directors approval when we completed a public offering of 2.3 million shares of our common stock, inclusive of the overallotment for gross proceeds totaling $17.1 million, at a public offering price of $8.55 per share, which was below our then current NAV of $9.06 per share.

At the upcoming annual stockholders meeting scheduled for February 11, 2016, our stockholders will again be asked to vote in favor of renewing this proposal for another year. During the past year, our common stock has traded consistently below NAV. Any decision to sell shares of our common stock below the then current NAV per share of our common stock would be subject to the determination by our Board of Directors that such issuance is in our and our stockholders’ best interests.

If we were to sell shares of our common stock below NAV per share, such sales would result in an immediate dilution to the NAV per share. This dilution would occur as a result of the sale of shares at a price below the then

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current NAV per share of our common stock and a proportionately greater decrease in a stockholder’s interest in our earnings and assets and voting interest in us than the increase in our assets resulting from such issuance. The greater the difference between the sale price and the NAV per share at the time of the offering, the more significant the dilutive impact would be. Because the number of shares of common stock that could be so issued and the timing of any issuance is not currently known, the actual dilutive effect, if any, cannot be currently predicted. However, if, for example, we sold an additional 10.0% of our common stock at a 5.0% discount from NAV, a stockholder who did not participate in that offering for its proportionate interest would suffer NAV dilution of up to 0.5% or $5 per $1,000 of NAV.

We may not be permitted to declare a dividend or make any distribution to stockholders or repurchase shares until such time as we satisfy the asset coverage tests under the provisions of the 1940 Act that apply to BDCs. As a BDC, we have the ability to issue senior securities only in amounts such that our asset coverage, as defined in the 1940 Act, equals at least 200% after each issuance of senior securities. If the value of our assets declines, we may be unable to satisfy this test. If that happens, we may be required to sell a portion of our investments and, depending on the nature of our leverage, repay a portion of our debt at a time when such sales and/or repayments may be disadvantageous.

Regulations governing our operation as a BDC and RIC will affect our ability to raise, and the way in which we raise, additional capital or borrow for investment purposes, which may have a negative effect on our growth. As a result of the annual distribution requirement to qualify as a RIC, we may need to periodically access the capital markets to raise cash to fund new investments. We may issue “senior securities representing indebtedness,” including borrowing money from banks or other financial institutions or “senior securities that are stock,” such as our mandatorily redeemable preferred stock, only in amounts such that our asset coverage on each senior security, as defined in the 1940 Act, equals at least 200% after each such incurrence or issuance. Further, we may not be permitted to declare a dividend or make any distribution to our outstanding stockholders or repurchase shares until such time as we satisfy these tests. Our ability to issue different types of securities is also limited. Compliance with these requirements may unfavorably limit our investment opportunities and reduce our ability in comparison to other companies to profit from favorable spreads between the rates at which we can borrow and the rates at which we can lend. As a BDC, therefore, we intend to continuously issue equity at a rate more frequent than our privately owned competitors, which may lead to greater stockholder dilution. We have incurred leverage to generate capital to make additional investments. If the value of our assets declines, we may be unable to satisfy the asset coverage test under the 1940 Act, which could prohibit us from paying distributions and could prevent us from qualifying as a RIC. If we cannot satisfy the asset coverage test, we may be required to sell a portion of our investments and, depending on the nature of our debt financing, repay a portion of our indebtedness at a time when such sales and repayments may be disadvantageous.

If we fail to pay dividends on our Series 2021 Term Preferred Stock for two years, the holders of our Series 2021 Term Preferred Stock will be entitled to elect a majority of our directors.

The terms of our Series 2021 Term Preferred Stock provide for annual dividends in the amount of $1.6875 per outstanding share of Series 2021 Term Preferred Stock. In accordance with the terms of our Series 2021 Term Preferred Stock, if dividends thereon are unpaid in an amount equal to at least two years of dividends, the holders of Series 2021 Term Preferred Stock will be entitled to elect a majority of our Board of Directors.

Holders of our preferred stock and future holders of any securities ranking senior to our common stock have dividend, distribution and liquidation rights that are senior to the rights of the holders of our common stock.

In May 2014, we completed a public offering of the Series 2021 Term Preferred Stock, at a public offering price of $25.00 per share. In such offering, we issued 2.4 million shares of Series 2021 Term Preferred Stock. The shares of Series 2021 Term Preferred Stock have dividend, distribution and liquidation rights that are senior to the rights of the holders of our common stock. Further, in the future, we may attempt to increase our capital resources by making additional offerings of preferred equity securities or issuing debt securities. Upon liquidation, holders of our preferred stock, holders of our debt securities, if any, and lenders with respect to other

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borrowings, including the Credit Facility, would receive a distribution of our available assets in full prior to the holders of our common stock. Because our decision to issue securities in any future offering will depend on market conditions and other factors beyond our control, we cannot predict or estimate the amount, timing or nature of our future offerings. Thus, our common stockholders bear the risk of our future offerings reducing the per share trading price of our common stock and diluting their interest in us. For more detail regarding senior rights of preferred stockholders, see “Description of Our Securities—Preferred Stock.”

Other Risks

We could face losses and potential liability if intrusion, viruses or similar disruptions to our technology jeopardize our confidential information, whether through breach of our network security or otherwise.

Maintaining our network security is of critical importance because our systems store highly confidential financial models and portfolio company information. Although we have implemented, and will continue to implement, security measures, our technology platform is and will continue to be vulnerable to intrusion, computer viruses or similar disruptive problems caused by transmission from unauthorized users. The misappropriation of proprietary information could expose us to a risk of loss or litigation.

Terrorist attacks, acts of war, or national disasters may affect any market for our common stock, impact the businesses in which we invest, and harm our business, operating results, and financial conditions.

Terrorist acts, acts of war, or national disasters have created, and continue to create, economic and political uncertainties and have contributed to global economic instability. Future terrorist activities, military or security operations, or national disasters could further weaken the domestic/global economies and create additional uncertainties, which may negatively impact the businesses in which we invest directly or indirectly and, in turn, could have a material adverse impact on our business, operating results, and financial condition. Losses from terrorist attacks and national disasters are generally uninsurable.

Cybersecurity risks and cyber incidents may adversely affect our business by causing a disruption to our operations, or the operations of businesses in which we invest, a compromise or corruption of our confidential information and/or damage to our business relationships, all of which could negatively impact our business, financial condition and operating results.

A cyber incident is considered to be any adverse event that threatens the confidentiality, integrity or availability of our information resources. These incidents may be an intentional attack or an unintentional event and could involve gaining unauthorized access to our information systems for purposes of misappropriating assets, stealing confidential information, corrupting data or causing operational disruption. The result of these incidents may include disrupted operations, misstated or unreliable financial data, liability for stolen assets or information, increased cybersecurity protection and insurance costs, litigation and damage to our business relationships. As our reliance on technology has increased, so have the risks posed to our information systems, both internal and those provided to us by third-party service providers. We have implemented processes, procedures and internal controls to help mitigate cybersecurity risks and cyber intrusions, but these measures, as well as our increased awareness of the nature and extent of a risk of a cyber-incident, do not guarantee that a cyber-incident will not occur and/or that our financial results, operations or confidential information will not be negatively impacted by such an incident.

We are dependent on information systems and systems failures could significantly disrupt our business, which may, in turn, negatively affect the market price of our common stock and our ability to pay dividends.

Our business is dependent on our and third parties’ communications and information systems. Any failure or interruption of those systems, including as a result of the termination of an agreement with any third-party service providers, could cause delays or other problems in our activities. Our financial, accounting, data

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processing, backup or other operating systems and facilities may fail to operate properly or become disabled or damaged as a result of a number of factors including events that are wholly or partially beyond our control and adversely affect our business. There could be:

These events, in turn, could have a material adverse effect on our operating results and negatively affect the market price of our common stock and our ability to pay dividends to our stockholders.

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SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

All statements contained or incorporated by reference in this prospectus or any accompanying prospectus supplement, other than historical facts, may constitute “forward-looking statements.” These statements may relate to, among other things, future events or our future performance or financial condition. In some cases, you can identify forward-looking statements by terminology such as “may,” “might,” “believe,” “will,” “provided,” “anticipate,” “future,” “could,” “growth,” “plan,” “intend,” “expect,” “should,” “would,” “if,” “seek,” “possible,” “potential,” “likely” or the negative of such terms or comparable terminology. These forward-looking statements involve known and unknown risks, uncertainties and other factors that may cause our actual results, levels of activity, performance or achievements to be materially different from any future results, levels of activity, performance or achievements expressed or implied by such forward-looking statements. Such factors include, among others: (1) the recurrence of adverse events in the economy and the capital markets; (2) risks associated with negotiation and consummation of pending and future transactions; (3) the loss of one or more of our executive officers, in particular David Gladstone, Terry Lee Brubaker and Robert L. Marcotte; (4) changes in our investment objectives and strategy; (5) availability, terms (including the possibility of interest rate volatility) and deployment of capital; (6) changes in our industry, interest rates, exchange rates or the general economy; (7) the degree and nature of our competition; (8) our ability to maintain our qualification as a RIC and as a Business Development Company; and (9) those factors described in the “Risk Factors” section of this prospectus and any accompanying prospectus supplement. We caution readers not to place undue reliance on any such forward-looking statements, which speak only as of the date made. 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. The forward-looking statements contained or incorporated by reference in this prospectus or any accompanying prospectus supplement are excluded from the safe harbor protection provided by the Private Securities Litigation Reform Act of 1995 and Section 27A of the Securities Act.

USE OF PROCEEDS

Unless otherwise specified in any prospectus supplement accompanying this prospectus, we expect to use the net proceeds from the sale of the Securities first to pay down existing short-term debt, then to make investments in small and mid-sized businesses in accordance with our investment objectives, with any remaining proceeds to be used for other general corporate purposes. For the year ended September 30, 2015, indebtedness under our Credit Facility had a weighted average interest rate of approximately 4.1%, excluding effects of amortization on our deferred financing costs, and the revolving period ends on January 19, 2019. We anticipate that substantially all of the net proceeds of any offering of Securities will be utilized in the manner described above within three months of the completion of such offering. Pending such utilization, we intend to invest the net proceeds of any offering of Securities primarily in cash, cash equivalents, U.S. government securities, and other high-quality debt investments that mature in one year or less from the date of investment, consistent with the requirements for continued qualification as a RIC for federal income tax purposes.

PRICE RANGE OF COMMON STOCK AND DISTRIBUTIONS

We currently intend to distribute in the form of cash dividends, for each taxable year, a minimum of 90% of our annual ordinary income and short-term capital gains, if any, to our stockholders in the form of monthly dividends. We intend to retain long-term capital gains and treat them as deemed distributions for tax purposes. We report the estimated tax characterization of each dividend when declared while the actual tax characterization of dividends for each calendar year are reported to each stockholder on IRS Form 1099-DIV. There is no assurance that we will achieve investment results or maintain a tax status that will permit any specified level of cash distributions or year-to-year increases in cash distributions. At the option of a holder of record of common stock, all cash distributions paid with respect to our common stock can be reinvested automatically under our dividend reinvestment plan in additional whole and fractional shares of our common stock. A stockholder whose

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shares are held in the name of a broker or other nominee should contact the broker or nominee regarding participation in a dividend reinvestment plan. See “Risk Factors—Risks Related to Our Regulation and Structure—We will be subject to corporate-level tax if we are unable to satisfy Code requirements for RIC qualification;” “Dividend Reinvestment Plan;” and “Material U.S. Federal Income Tax Considerations. “

Our common stock is quoted on the NASDAQ under the symbol “GLAD.” Our common stock has historically traded at prices both above and below its NAV. There can be no assurance that any premium to NAV will be attained or maintained. As of December 17, 2015 there were 37 stockholders of record, meaning individuals or entities that we carry in our records as the registered holder (although not necessarily the beneficial owner) of our common stock.

The following table sets forth the range of high and low intraday sale prices of our common stock as reported on the NASDAQ and the distributions declared by us for the last two completed fiscal years and the current fiscal year through December 17, 2015.

COMMON SHARE PRICE DATA

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The following are our outstanding classes of securities as of September 30, 2015.

RATIOS OF EARNINGS TO FIXED CHARGES

For the years ended September 30, 2015, 2014, 2013, 2012 and 2011, the ratios of three income metrics to fixed charges of the Company, computed as set forth below, were as follows:

For purposes of computing the ratios, fixed charges include interest expense on borrowings, dividend expense on mandatorily redeemable preferred stock and amortization of deferred financing fees.

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CONSOLIDATED SELECTED FINANCIAL DATA

The following consolidated selected financial data for the fiscal years ended September 30, 2015, 2014, 2013, 2012, and 2011 are derived from our audited consolidated financial statements. The other data included in the second table below is unaudited. The data should be read in conjunction with our accompanying consolidated financial statements and notes thereto and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” included elsewhere in this prospectus.

(dollar amounts in thousands, except per share and per unit data)

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SELECTED QUARTERLY DATA (UNAUDITED)

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MANAGEMENT’S DISCUSSION AND ANALYSIS OF

FINANCIAL CONDITION AND RESULTS OF OPERATIONS

The following analysis of our financial condition and results of operations should be read in conjunction with our accompanying Consolidated Financial Statements and the notes thereto contained elsewhere in this prospectus. Historical financial condition and results of operations and percentage relationships among any amounts in the financial statements are not necessarily indicative of financial condition, results of operations or percentage relationships for any future periods. Except per share amounts, dollar amounts in the tables included herein are in thousands unless otherwise indicated.

OVERVIEW

General

We were incorporated under the Maryland General Corporation Law on May 30, 2001. We operate as an externally managed, closed-end, non-diversified management investment company, and have elected to be treated as a business development company (“BDC”) under the Investment Company Act of 1940, as amended (the “1940 Act”). In addition, for federal income tax purposes we have elected to be treated as a regulated investment company (“RIC”) under the Internal Revenue Code of 1986, as amended (the “Code”). As a BDC and a RIC, we are subject to certain constraints, including limitations imposed by the 1940 Act and the Code.

We were established for the purpose of investing in debt and equity securities of established private business operating in the United States (“U.S.”). Our investment objectives are to: (1) achieve and grow current income by investing in debt securities of established businesses that we believe will provide stable earnings and cash flow to pay expenses, make principal and interest payments on our outstanding indebtedness and make distributions to stockholders that grow over time; and (2) provide our stockholders with long-term capital appreciation in the value of our assets by investing in equity securities of established businesses that we believe can grow over time to permit us to sell our equity investments for capital gains. To achieve our investment objectives, our investment strategy is to invest in several categories of debt and equity securities, with each investment generally ranging from $5 million to $25 million, although investment size may vary, depending upon our total assets or available capital at the time of investment. We expect that our investment portfolio over time will consist of approximately 90.0% debt investments and 10.0% equity investments, at cost. As of September 30, 2015, our investment portfolio was made up of approximately 91.2% debt investments and 8.8% equity investments, at cost.

We focus on investing in small and medium-sized private businesses in the U.S. that meet certain criteria, including, but not limited to, the following: the sustainability of the business’ free cash flow and its ability to grow it over time, adequate assets for loan collateral, experienced management teams with a significant ownership interest in the borrower, reasonable capitalization of the borrower, including an ample equity contribution or cushion based on prevailing enterprise valuation multiples and, to a lesser extent, the potential to realize appreciation and gain liquidity in our equity position, if any. We lend to borrowers that need funds for growth capital or to finance acquisitions or recapitalize or refinance their existing debt facilities. We seek to avoid investing in high-risk, early-stage enterprises. Our targeted portfolio companies are generally considered too small for the larger capital marketplace. We invest by ourselves or jointly with other funds and/or management of the portfolio company, depending on the opportunity. If we are participating in an investment with one or more co-investors, our investment is likely to be smaller than if we were investing alone.

In July 2012, the Securities and Exchange Commission (“SEC”) granted us an exemptive order that expands our ability to co-invest with certain of our affiliates by permitting us, under certain circumstances, to co-invest with Gladstone Investment Corporation (“Gladstone Investment”) and any future business development company or closed-end management investment company that is advised (or sub-advised if it controls the fund) by our external investment adviser or any combination of the foregoing subject to the conditions in the SEC’s order. We believe this ability to co-invest will continue to enhance our ability to further our investment objectives and strategies.

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In general, our investments in debt securities have a term of no more than seven years, accrue interest at variable rates (generally based on the one-month London Interbank Offered Rate (“LIBOR”)) and, to a lesser extent, at fixed rates. We seek debt instruments that pay interest monthly or, at a minimum, quarterly, have a success fee or deferred interest provision and are primarily interest only with all principal and any accrued but unpaid interest due at maturity. Generally, success fees accrue at a set rate and are contractually due upon a change of control in the business. Some debt securities have deferred interest whereby some portion of the interest payment is added to the principal balance so that the interest is paid, together with the principal, at maturity. This form of deferred interest is often called paid-in-kind (“PIK”) interest.

Typically, our equity investments consist of common stock, preferred stock, limited liability company interests, or warrants to purchase the foregoing. Often, these equity investments occur in connection with our original investment, recapitalizing a business, or refinancing existing debt.

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

Our shares of common stock and 6.75% Series 2021 Term Preferred Stock (our “Series 2021 Term Preferred Stock”) are traded on the NASDAQ Global Select Market (“NASDAQ”) under the trading symbols “GLAD” and “GLADO,” respectively.

Business Environment

The strength of the global economy and the U.S. economy in particular, continues to be uncertain, although economic conditions generally appear to be improving, albeit slowly. Many of our portfolio companies, as well as those small and medium-sized companies that we evaluate for prospective investment, may remain vulnerable to the impacts of the uncertain economy which may impact their ability to repay our loans or engage in a liquidity event, such as a sale, recapitalization or initial public offering. Uncertain political, regulatory and economic conditions could also disproportionately impact some of the industries in which we have invested, causing us to be more vulnerable to losses in our portfolio, resulting in an increase in the number of our non-performing assets and a decrease in the fair market value of our portfolio.

We believe several factors impacting commercial banks, including consolidation, capital constraints and regulatory changes, have benefited our fund and other lenders like us. There has been, however, increased competitive pressure in the middle market lending marketplace from other BDCs and other investment companies, as well as small banks and some private investors, for senior secured and senior secured subordinated debt. We have seen an increase in refinancing and recapitalization transactions and there have been increased competitive pressures resulting in reduced investment yields and/or higher leverage and increasingly riskier investments in the middle market segment we focus on. In addition, there has been an increase in new entrants (financial services companies, BDCs and other investment funds) seeking to capitalize on middle market lending opportunities. Many of our competitors have lower cost of capital than we do and also may be willing to take on riskier investments than we are. We do not know if general economic conditions will continue to improve or if adverse conditions will recur and we do not know the full extent to which the inability of the U.S. government to address its fiscal condition in the near and long term will affect us. If market instability persists or intensifies, we may experience difficulty in raising capital. In summary, we believe we are in a prolonged economic recovery; however, we do not know the full extent to which the impact of the current economic conditions will affect us or our portfolio companies.

Portfolio Activity

While conditions remain somewhat challenging in the marketplace, we believe that the current credit environment provides many investment opportunities that are consistent with our investment objectives and

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strategies and whereby we can achieve attractive risk-adjusted returns. During the year ended September 30, 2015, we invested in 11 new proprietary and syndicate investments totaling $102.3 million; however, five portfolio companies paid off early or were sold during the year, for an aggregate of $14.9 million in unscheduled payoffs. Additionally, we have continued to focus on challenged investments over our 2015 fiscal year and sold two portfolio companies that were on non-accrual status at the time of sale and restructured one portfolio company that was previously on non-accrual, for aggregate net proceeds of $7.1 million and a combined realized loss of $34.1 million, resulting in a net expansion of three portfolio companies year over year. We will continue to manage any non-strategic investments to an orderly exit.

During the year ended September 30, 2015, our eight new proprietary investments provided a weighted average current pay interest rate of 10.1%, a going in weighted average leverage of 3.3x, a current weighted average life of 4.5 years and a mix of approximately 92.1% secured first lien and 7.9% secured second lien investments, all based on the originating debt principal balances. One portfolio company where we co-invested with Gladstone Investment was included in these new proprietary investments, as discussed further under “Investment Highlights.”

Capital Raising Efforts

Despite the challenges in the economy for the past several years, in fiscal 2015, and immediately subsequent to, we met our capital needs through the extension, expansion and enhancement to our $170.0 million revolving line of credit (our “Credit Facility”) and by accessing the capital markets in the form of offerings of our common stock. In May, 2015, we, through Business Loan, entered into a Fifth Amended and Restated Credit Facility (the “Credit Facility”), which increased the commitment amount from $137.0 million to $140.0 million, extended the revolving period end date by three years to January 19, 2019, decreased the marginal interest rate added to 30-day LIBOR from 3.75% to 3.25% per annum, set the unused commitment fee at 0.50% on all undrawn amounts, expanded the scope of eligible collateral, and amended certain other terms and conditions. In June 2015, we through Business Loan, entered into certain joinder and assignment agreements with three new lenders to increase borrowing capacity under our Credit Facility by $30.0 million to $170.0 million. Most recently, we issued 2.3 million shares of common stock for gross proceeds of $19.7 million in October and November 2015. Refer to (“Liquidity and Capital Resources—Revolving Credit Facility” , and “—Equity—Common Stock”) for further discussion of our revolving line of credit and recent common stock offerings.

Although we were able to access the capital markets over the last year, we believe uncertain market conditions continue to affect the trading price of our capital stock and thus may inhibit our ability to finance new investments through the issuance of equity. The current volatility in the credit market and the uncertainty surrounding the U.S. economy have led to significant stock market fluctuations, particularly with respect to the stock of financial services companies like ours. During times of increased price volatility, our common stock may be more likely to trade at a price below our net asset value (“NAV”) per share, which is not uncommon for BDCs like us.

On November 20, 2015, the closing market price of our common stock was $8.68, a 4.2% discount to our September 30, 2015, NAV per share of $9.06. When our stock trades below NAV per common share, as it has fairly consistently over the last several years, our ability to issue equity is constrained by provisions of the 1940 Act, which generally prohibits the issuance and sale of our common stock below NAV per common share without first obtaining approval from our stockholders and our independent directors, other than through sales to our then-existing stockholders pursuant to a rights offering. At our annual meeting of stockholders held on February 12, 2015, our stockholders approved a proposal which authorizes us to sell shares of our common stock at a price below our then current NAV per common share subject to certain limitations (including, but not limited to, that the number of shares issued and sold pursuant to such authority does not exceed 25.0% of our then outstanding common stock immediately prior to each such sale) for a period of one year from the date of approval, provided that our board of directors (our “Board of Directors”) makes certain determinations prior to any such sale. With our Board of Directors’ subsequent approval, we issued shares of our common stock under

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an at-the-market program (refer to “Recent Developments—At-the-Market Program”) and in an overnight offering in October 2015 with the overallotment closing in November 2015 at a price per share below the then current NAV per share. The resulting proceeds, in part, will allow us to grow the portfolio by making new investments, generate additional income through new investments, and provide us additional equity capital to help ensure continued compliance with regulatory tests. Refer to “Liquidity and Capital Resources—Equity—Common Stock” for further discussion of our common stock offerings.

The current uncertain and volatile economic conditions may also continue to cause the value of the collateral securing some of our loans, as well as the value of our equity investments, to fluctuate, which has impacted and may continue to impact our ability to borrow under our Credit Facility. Additionally, our Credit Facility contains covenants regarding the maintenance of certain minimum loan concentrations and net worth, which are affected by the decrease in value of our portfolio. Failure to meet these requirements would result in a default which, if we are unable to obtain a waiver from our lenders, would cause an acceleration of our repayment obligations under our Credit Facility. As of September 30, 2015, we were in compliance with all of our Credit Facility’s covenants.

Regulatory Compliance

Challenges in the current market are intensified for us by certain regulatory limitations under the Code and the 1940 Act, as well as contractual restrictions under the agreement governing our Credit Facility that further constrain our ability to access the capital markets. To qualify to be taxed as a RIC, we must distribute at least 90.0% of our investment company taxable income, which is generally our net ordinary income plus the excess of our net short-term capital gains over net long-term capital losses. Because we are required to satisfy the RIC annual stockholder distribution requirement, and because the illiquidity of many of our investments makes it difficult for us to finance new investments through the sale of current investments, our ability to make new investments is highly dependent upon external financing. Our external financing sources include the issuance of equity securities, debt securities or other leverage, such as borrowings under our Credit Facility. Our ability to seek external debt financing, to the extent that it is available under current market conditions, is further subject to the asset coverage limitations of the 1940 Act, which require us to have an asset coverage ratio (as defined in Section 18(h) of the 1940 Act), of at least 200.0% on our “senior securities representing indebtedness,” inclusive of additional external debt financing that we seek to incur. Furthermore, to issue additional “senior securities that are stock” (such as our series of mandatorily redeemable preferred stock) Section 18 of the 1940 Act requires that we must have an asset coverage ratio of at least 200% on our “senior securities that are stock.”

We expect that, given these regulatory and contractual constraints in combination with current market conditions, debt and equity capital may be costly for us to access in the near term. However, we believe that our recent amendments to our Credit Facility to decrease the interest rate on advances and extend its maturity until 2019 and our ability to co-invest with Gladstone Investment and certain other affiliated investment funds, should increase our ability to make investments in businesses that we believe will be generally resistant to a recession and, as a result, will be likely to achieve attractive long-term returns for our stockholders.

Going into fiscal year 2016, we intend to continue to work through some of the older investments in our portfolio to enhance overall returns and hope to show our stockholders new conservative investments in businesses with steady cash flows. We are focused on building our pipeline and making investments that meet our objectives and strategies and that provide appropriate returns, in light of the accompanying risks.

Investment Highlights

During the year ended September 30, 2015, we invested an aggregate of $102.3 million in 11 new portfolio companies and an aggregate of $33.8 million in existing portfolio companies. Also, during the year ended September 30, 2015, we exited our investments in two non-accrual portfolio companies, and restructured one of our portfolio companies that was previously on non-accrual, for net proceeds of a combined $7.1 million, and we

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received scheduled and unscheduled principal repayments of a combined $40.3 million from existing portfolio companies, including $26.7 million from early payoffs at par and sales. Since our initial public offering in August 2001, we have made 398 different loans to, or investments in, 196 companies for a total of approximately $1.4 billion, before giving effect to principal repayments on investments and divestitures.

Investment Activity

During the year ended September 30, 2015, we executed the following transactions with certain of our portfolio companies:

Issuances and Originations

During the year ended September 30, 2015, we invested an aggregate of $89.8 million to eight new proprietary portfolio companies and an aggregate of $12.5 million in three new syndicated portfolio companies (PSC Industrial Holdings Corp., SourceHOV LLC and Vertellus Specialties Inc.). Below are significant issuances and originations during the year ended September 30, 2015:

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Repayments and Exits

During the year ended September 30, 2015, 29 borrowers made principal repayments totaling $40.3 million in the aggregate, consisting of $39.1 million of unscheduled principal and revolver repayments, as well as $1.2 million in contractual principal amortization. Below are significant repayments and exits during the year ended September 30, 2015:

Refer to Note 15—Subsequent Events in our accompanying Consolidated Financial Statements included elsewhere in prospectus for investment activity occurring subsequent to September 30, 2015. Of note, the following significant exits occurred subsequent to September 30, 2015:

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Recent Developments

Common Stock Offering

In October 2015, we completed a public offering of 2.0 million shares of our common stock. Gross proceeds totaled $17.1 million and net proceeds, after deducting underwriting discounts and offering costs borne by us, were approximately $16.0 million. In November, 2015, the underwriters fully exercised their overallotment option to purchase 300,000 additional shares of our common stock, resulting in net proceeds, after deducting underwriting discounts and offering costs borne by us, of approximately $2.4 million

Base Management Fee

In October 2015, we amended our existing advisory agreement with the Adviser, to reduce the base management fee under the agreement from 2.0% per annum (0.5% per quarter) of average total assets (excluding cash or equivalents) to 1.75% per annum (0.4375% per quarter) effective July 1, 2015. All other terms of the advisory agreement remained unchanged. The amendment was approved unanimously by our Board of Directors.

At-the-Market Program

In February 2015, we entered into equity distribution agreements (commonly referred to as “at-the-market agreements” or our “Sales Agreements”) with KeyBanc Capital Markets Inc. and Cantor Fitzgerald & Co., each a “Sales Agent,” under which we may issue and sell, from time to time, through the Sales Agents, up to an aggregate offering price of $50.0 million shares of our common stock of which we have $48.8 million of availability remaining as of September 30, 2015. During the twelve months ended September 30, 2015, we sold an aggregate of 131,462 shares of our common stock for gross proceeds of $1.2 million. No shares of common stock have been sold under these Sales Agreements subsequent to September 30, 2015. The offering of our shares of common stock pursuant to the Sales Agreements will terminate upon the earlier of (i) the sale of all common stock subject to the Sales Agreements or (ii) the termination of the Sales Agreements in accordance with their terms. Each Sales Agreement may be terminated by us in our sole discretion under the circumstances specified in the Sales Agreement by giving five days-notice to the applicable Sales Agent. In addition, each Sales Agent may terminate its Sales Agreement under the circumstances specified in such Sales Agreement by giving five days’ notice to the Company.

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RESULTS OF OPERATIONS

Comparison of the Year Ended September 30, 2015 to the Year Ended September 30, 2014

NM = Not Meaningful

Investment Income

Total interest income increased by 8.5% for the year ended September 30, 2015, as compared to the prior year period. This increase was due primarily to the funding of several new investments during the period, partially offset by several early payoffs at par during the prior year. The level of interest income on our investments is directly related to the principal balance of our interest-bearing investment portfolio outstanding during the year, multiplied by the weighted average yield. The weighted average principal balance of our interest-bearing investment portfolio during the year ended September 30, 2015, was $319.1 million, compared to $280.4 million for the prior year, an increase of $38.7 million, or 13.8%. The weighted average yield on our interest-bearing investments is based on the current stated interest rate on interest-bearing investments for the year ended

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September 30, 2015 was 10.9% compared to 11.5% for the year ended September 30, 2014, inclusive of any allowances on interest receivables made during those periods.

As of September 30, 2015, two portfolio companies were on non-accrual status, with an aggregate debt cost basis of approximately $26.4 million, or 7.1% of the cost basis of all debt investments in our portfolio. During the quarter ended December 31, 2014, we sold our investment in Midwest Metal, which had been on non-accrual status. Effective January 1, 2015, we placed GFRC Holdings LLC (“GFRC”) on non-accrual status and restored two tranches of Sunshine Media Holdings (“Sunshine”) debt to accrual status and effective April 1, 2015, we placed Saunders on non-accrual status. During the quarter ended September 30, 2015, we sold our investment in Saunders which was on non-accrual and restructured our investment in GFRC and restored it to accrual status. As of September 30, 2014, three portfolio companies were on non-accrual status, with an aggregate debt cost basis of approximately $51.4 million, or 16.1%, of the cost basis of all debt investments in our portfolio. Effective January 1, 2014, we placed Heartland on non-accrual status and effective June 1, 2014 we placed Midwest Metal on non-accrual status. During the quarter ended December 31, 2013, we sold our investment in LocalTel, LLC (“LocalTel”), which had been on non-accrual status. See “Overview—Investment Highlights “ for more information.

For the year ended September 30, 2015, other income consisted primarily of $0.6 million in success fees related to the early payoff of NAAS at a realized gain, $0.8 million in success fees prepaid by Defiance, $0.5 million in dividend income received from Funko, $0.3 million in success fees prepaid by Francis Drilling Fluids, Ltd. (“FDF”), $0.3 million in dividend income and prepaid success fees from Southern Petroleum Laboratories, Inc. (“SPL”), $0.3 million in settlement fees received from Sunburst, $0.2 million in dividend income received from FDF and $0.2 million of success fees received related to our sale of substantially all of the assets in Lindmark Acquisition, LLC (“Lindmark”) in September 2013. For the year ended September 30, 2014, other income consisted primarily of $0.7 million in dividend income received from FedCap Partners, LLC (“FedCap”), $0.5 million in success fees received related to the early payoff of Thibaut Acquisition Co. (“Thibaut”) at par, $0.4 million in legal settlement proceeds received related to a portfolio company previously sold, $0.8 million in aggregate of prepaid success fees, dividend income and other fees received from FDF, $0.1 million in prepayment fees received from Pop Radio, LLC (“POP”), an aggregate of $0.3 million in prepayment fees from the early payoff of five syndicate investments at par and $1.4 million in success fees received related to our sale of substantially all of the assets of Lindmark in 2013.

The following tables list the investment income for our five largest portfolio company investments at fair value during the respective years:

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Expenses

Expenses, net of credits from the Adviser, increased for the year ended September 30, 2015, by 11.8% as compared to the prior year. This increase was primarily due to increases in our net base management fees to the Advisor, interest expense on borrowings, and dividend expense on our mandatorily redeemable preferred stock, partially offset by a decrease in the net incentive fee to the Adviser.

Interest expense increased by $1.2 million, or 45.7%, during the year ended September 30, 2015, as compared to the prior year, primarily due to increased borrowings outstanding throughout the period on our Credit Facility. The weighted average balance outstanding on our Credit Facility during the year ended September 30, 2015, was approximately $92.5 million, as compared to $41.9 million in the prior year period, an increase of 120.9%. This was partially offset by lower average borrowing rates on our Credit Facility. The weighted average borrowing rate during the year ended September 30, 2015, was approximately 4.1% compared to 6.3% in the prior year period, a decrease of 34.9%.

The increase of $0.8 million, or 23.3%, in dividend expense on our mandatorily redeemable preferred stock during the year ended September 30, 2015, as compared to the prior year, was primarily due to the higher monthly distribution amount on our Series 2021 Term Preferred Stock, which was issued in May 2014, and which was partially offset by the voluntary redemption of our Series 2016 Term Preferred Stock, which was issued in November 2011 and redeemed in May 2014. Refer to “Liquidity and Capital Resources—Equity—Term Preferred Stock” for further discussion of our term preferred stock.

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The increase of $0.4 million in the net base management fee earned by the Adviser during the year ended September 30, 2015, as compared to the prior year, was due primarily to an increase in the average total assets outstanding as a result of the net growth in our investment portfolio during the period. This was partially offset by a decrease in the annual base management fee from 2.0% to 1.75% effective July 1, 2015. The base management, loan servicing and incentive fees and associated unconditional, non-contractual, and irrevocable voluntary credits are computed quarterly, as described under “Investment Advisory and Management Agreement” and “Loan Servicing Fee Pursuant to Credit Agreement” in Note 4 of the notes to our accompanying Condensed Consolidated Financial Statements and are summarized in the following table:

Realized Loss and Unrealized Appreciation

Net Realized Loss on Investments and Escrows

For the year ended September 30, 2015, we recorded a net realized loss on investments and escrows of $34.2 million, which resulted primarily from the sales of Midwest Metal, Sunburst, Saunders and the restructure of GFRC for a combined realized loss of $34.1 million and net proceeds of $7.1 million. This realized loss was partially offset by the realized gain of $1.6 million we recognized on the early payoff of NAAS.

For the year ended September 30, 2014, we recorded a net realized loss on investments and escrows of $12.1 million, which primarily consisted of realized losses of $10.8 million due to our sale of LocalTel for proceeds contingent on an earn-out and $2.8 million due to our sale of BAS Broadcasting (“BAS”) for net proceeds of $4.7 million. Partially offsetting these realized losses, was the realized gain of $1.0 million we recognized on the exit of WP Evenflo Group Holdings, Inc. (“WP Evenflo”).

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Net Unrealized Appreciation of Investments

Net unrealized appreciation (depreciation) of investments is the net change in the fair value of our investment portfolio during the year, including the reversal of previously recorded unrealized appreciation or depreciation when gains and losses are actually realized. During the year ended September 30, 2015, we recorded net unrealized appreciation of investments in the aggregate amount of $23.6 million, which included the reversal of an aggregate of $34.6 million in cumulative unrealized depreciation primarily related to the sales of Midwest Metal, Sunburst, Saunders and restructure of GFRC during the fiscal year. Excluding reversals, we recorded $11.0 million in net unrealized depreciation for the year ended September 30, 2015. Over our entire portfolio, the net unrealized depreciation (excluding reversals) for the year ended September 30, 2015, consisted of approximately $15.2 million of depreciation on our debt investments and approximately $4.2 million of appreciation on our equity investments.

The net realized gain (loss) and unrealized appreciation (depreciation) across our investments for the year ended September 30, 2015, were as follows:

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The largest driver of our net unrealized depreciation (excluding reversals) for the year ended September 30, 2015, were the decreases in comparable multiples used in valuations and a decline in the financial and operational performance of GFRC and RBC Acquisition Corp. (“RBC”), resulting in $5.6 million and $7.6 million, respectively, of net unrealized depreciation during the year. Partially offsetting this net unrealized depreciation for the year ended September 30, 2015, was the net unrealized appreciation on Funko of $11.5 million due to increases in comparable multiples used in valuations and incremental improvements in the financial and operational performance of these portfolio companies.

During the year ended September 30, 2014, we recorded net unrealized appreciation of investments in the aggregate amount of $7.4 million, which included the reversal of an aggregate of $18.0 million in cumulative unrealized depreciation primarily related to the repayment of principal in full at par on International Junior Golf Training Acquisition Company (“Junior”) and the sales of BAS and LocalTel during the fiscal year. Excluding reversals, we recorded $10.6 million in net unrealized depreciation for the year ended September 30, 2014. Over our entire portfolio, the net unrealized depreciation (excluding reversals) for the year ended September 30, 2014, consisted of approximately $16.3 million of depreciation on our debt investments and approximately $5.7 million of appreciation on our equity investments.

The net realized gain (loss) and unrealized appreciation (depreciation) across our investments for the year ended September 30, 2014, were as follows:

The largest driver of our net unrealized depreciation (excluding reversals) for the year ended September 30, 2014, was the decreases in comparable multiples used in valuations and a decline in the financial and operational

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performance of Midwest Metal and RBC Acquisition Corp. (“RBC”) resulting in $12.9 million and $5.3 million, respectively, of net unrealized depreciation during the year. Partially offsetting this net unrealized depreciation for the year ended September 30, 2014, was the net unrealized appreciation on Defiance Integrated Technologies, Inc. (“Defiance”) of $4.6 million and on Funko of $4.2 million due to increases in comparable multiples used in valuations and incremental improvements in the financial and operational performance of these portfolio companies.

As of September 30, 2015, the fair value of our investment portfolio was less than its cost basis by approximately $44.4 million and our entire investment portfolio was valued at 89.2% of cost, as compared to cumulative net unrealized depreciation of $68.0 million and a valuation of our entire portfolio at 80.5% of cost as of September 30, 2014. This decrease year over year in the cumulative unrealized depreciation on investments represents net unrealized appreciation of $23.6 million for the year ended September 30, 2015. Of our current investment portfolio, 10 portfolio companies originated before December 31, 2008, which represented 25.8% of the entire cost basis of our portfolio, were valued at 60.0% of cost and included our two investments on non-accrual status. Our 38 portfolio companies that originated after December 31, 2008, representing 74.2% of the entire cost basis of our portfolio, were valued at 99.3% of cost and none of which were on non-accrual status.

The cumulative net unrealized depreciation of our investments does not have an impact on our current ability to pay distributions to stockholders; however, it may be an indication of future realized losses, which could ultimately reduce our income available for distribution to stockholders.

Net Unrealized (Appreciation) Depreciation of Other

Net unrealized (appreciation) depreciation of other includes the net change in the fair value of our Credit Facility and our interest rate swap during the year, including the reversal of previously recorded unrealized appreciation or depreciation when gains and losses are realized. During the year ended September 30, 2015, we recorded a net unrealized depreciation of other of $1.3 million, compared to a net unrealized appreciation of $1.1 million for the year ended September 30, 2014. Our Credit Facility was fair valued at $127.3 million and $38.0 million as of September 30, 2015 and 2014, respectively. The interest rate swap was fair valued at $0 as of September 30, 2015 and 2014.

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Comparison of the Year Ended September 30, 2014 to the Year Ended September 30, 2013