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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM 10-K

(Mark One)

For the fiscal year ended September 30, 2012

OR

Commission file number 814-00237

GLADSTONE CAPITAL CORPORATION

(Exact name of registrant as specified in its charter)

(703) 287-5800

(Registrant’s telephone number, including area code)

Securities registered pursuant to Section 12(b) of the Act:

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.    YES  ¨    NO  x.

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act.    YES  ¨    NO  x.

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.    YES  x    NO  ¨

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).    YES  ¨    NO  ¨

Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation S-K is not contained herein, and will not be contained, to the best of registrant’s knowledge, in definitive proxy or information statements incorporated by reference in Part III of this Form 10-K or any amendment to this Form    10-K.  ¨

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer,” and “smaller reporting company” in Rule 12 b-2 of the Exchange Act.

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12 b-2 of the Exchange Act).    YES  ¨    NO  x.

The aggregate market value of the voting common stock held by non-affiliates of the Registrant on March 30, 2012, based on the closing price on that date of $8.11 on the NASDAQ Global Select Market, was $159,077,017. For the purposes of calculating this amount only, all directors and executive officers of the Registrant have been treated as affiliates. There were 21,000,160 shares of the Registrant’s common stock, $0.001 par value per share, outstanding as of November 9, 2012.

Documents Incorporated by Reference. Portions of the Registrant’s Proxy Statement relating to the Registrant’s 2013 Annual Meeting of Stockholders are incorporated by reference into Part III of this Annual Report on Form 10-K as indicated herein.

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GLADSTONE CAPITAL CORPORATION

FORM 10-K FOR THE FISCAL YEAR ENDED

SEPTEMBER 30, 2012

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FORWARD-LOOKING STATEMENTS

All statements contained herein, 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) further adverse changes 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, or George Stelljes III (4) changes in our investment objectives and strategy; (5) availability, terms 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; and (8) those factors described in the “Risk Factors” section of this Form 10-K. We caution readers not to place undue reliance on any such forward-looking statements. 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 Form 10-K.

PART I

In this Annual Report on Form 10-K, or Annual Report, the “Company,” “we,” “us,” and “our” refer to Gladstone Capital Corporation and its wholly-owned subsidiaries unless the context otherwise indicates. Dollar amounts are in thousands unless otherwise indicated.

ITEM 1. BUSINESS

Overview

We were incorporated under the Maryland General Corporation Laws on May 30, 2001, and completed our initial public offering on August 24, 2001. We operate as a 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”). For federal income tax purposes, we have elected to be treated as a regulated investment company (“RIC”) under Subchapter M of the Internal Revenue Code of 1986, as amended (the “Code”). We currently continue to qualify as a RIC for federal income tax purposes and obtain favorable RIC tax treatment by meeting certain requirements, including minimum distribution requirements.

Investment Objectives and Strategy

Our board of directors recently approved limited revisions to our investment objectives and strategies, effective on or about January 1, 2013, which revisions are reflected in the descriptions of our investment objectives and strategies below. All of our current portfolio investments fit within the scope of our revised investment objectives and strategies and no changes will need to be made to our current portfolio as a result of this revision.

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 objectives, our investment strategy is to invest in several categories of debt and equity securities, with each investment generally ranging from $5 million to $30 million, although investment size may vary, depending upon our total assets or available capital at the time of investment.

In general, our investments in debt securities have a term of no more than seven years, accrue interest at variable rates (based on the 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”).

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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.

As of September 30, 2012, our portfolio consisted of loans to 50 companies located in 28 states in 21 different industries with an aggregate fair value of $274.0 million. Since our initial public offering in 2001, we have invested in over 158 different companies, while making over 109 consecutive monthly distributions to common stockholders (excluding the quarterly common distributions prior to that).

We expect that our target portfolio over time will primarily include the following four categories of investments in private U.S. companies:

Additionally, pursuant to the 1940 Act, we must maintain at least 70% of our total assets in qualifying assets, which generally include each of the investment types listed above. Therefore, the 1940 Act permits us to invest up to 30% of our assets in other non-qualifying assets. See “Regulation as a BDC — Qualifying Assets” for a discussion of the types of qualifying assets in which we may invest under Section 55(a) of the 1940 Act.

Because the majority of the loans in our portfolio consist of term debt of private companies that typically cannot or will not expend the resources to have their debt securities rated by a credit rating agency, we expect that most, if not all, of the debt securities we acquire will be unrated. Investors should assume that these loans would be rated below what is today considered “investment grade” quality. Investments rated below investment grade are often referred to as high yield securities or junk bonds and may be considered high risk, as compared to investment-grade debt instruments.

Investment Concentrations

Year over year, our investment concentration as a percentage of fair value and of cost has remained relatively unchanged. As of September 30, 2012, we held 20 syndicated investments totaling $77.8 million at cost and $78.2 million at fair value, or 21.3% and 28.5 %, respectively, of our total aggregate portfolio. We held 24 syndicated investments totaling $92.1 million at cost and $90.7 million at fair value, or 24.0% and 29.9%, respectively, of our total aggregate portfolio as of September 30, 2011.

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The table below outlines our investments by security type as of September 30, 2012 and 2011:

Our five largest investments at fair value as of September 30, 2012, totaled $91.8 million, or 33.5% of our total aggregate portfolio, as compared to our five largest investments at fair value as of September 30, 2011, totaling $91.2 million, or 30.1% of our total aggregate portfolio. Investments at fair value consisted of the following industry classifications as of September 30, 2012 and 2011:

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Our investments at fair value were included in the following U.S. geographic regions at September 30, 2012 and 2011:

The geographic region indicates the location of the headquarters of our portfolio companies. A portfolio company may have a number of other business locations in other geographic regions.

Investment Adviser and Administrator

Gladstone Management Corporation (the “Adviser”) is our affiliate, investment adviser, and a privately-held company led by a management team which has extensive experience in our lines of business. The Adviser’s affiliate, a privately-held company, Gladstone Administration, LLC (the “Administrator”), employs, among others, our chief financial officer and treasurer, chief accounting officer, chief compliance officer, internal legal counsel and their respective staffs. Excluding our chief financial officer and treasurer and chief accounting officer, all of our executive officers serve as directors or executive officers, or both, of the following of our affiliates: Gladstone Commercial Corporation (“Gladstone Commercial”), a publicly-traded real estate investment trust; Gladstone Investment Corporation (“Gladstone Investment”), a publicly-traded BDC and RIC; the Adviser; and the Administrator. Our chief financial officer and treasurer is also the chief financial officer and treasurer of Gladstone Investment. David Gladstone, our chairman and chief executive officer, also serves on the board of managers of our affiliate, Gladstone Securities, LLC (“Gladstone Securities”), a privately-held broker-dealer registered with the Financial Industry Regulatory Authority (“FINRA”) and insured by the Securities Investor Protection Corporation.

The Adviser and Administrator also provide investment advisory and administrative services, respectively, to our affiliates, including, but not limited to, Gladstone Commercial; Gladstone Investment; and Gladstone Land Corporation (“Gladstone Land”), a private agricultural real estate company owned by our chief executive officer. In the future, the Adviser and Administrator may provide investment advisory and administrative services, respectively, to other funds and companies, both public and private.

We have been externally managed by the Adviser pursuant to an investment advisory and management agreement since October 1, 2004. The Adviser was organized as a corporation under the laws of the State of Delaware on July 2, 2002, and is a registered investment adviser under the Investment Advisers Act of 1940, as amended. The Adviser is headquartered in McLean, Virginia, a suburb of Washington, D.C., and also has offices in several other states.

Investment Process

Overview of Investment and Approval Process

To originate investments, the Adviser’s investment professionals use an extensive referral network comprised primarily of venture capitalists, leveraged buyout funds, investment bankers, attorneys, accountants, commercial bankers and business brokers. The Adviser’s investment professionals review informational packages from these and other sources in search of potential financing opportunities. If a potential opportunity matches our investment objectives, the investment professionals will seek an initial screening of the opportunity with our president and chief investment officer, George Stelljes III, to authorize the submission of an indication of interest (“IOI”) to the prospective portfolio company. If the prospective portfolio company passes this initial screening and the IOI is accepted by the prospective company, the investment professionals will seek approval to issue a letter of intent (“LOI”) to the prospective portfolio company from the Adviser’s investment committee, which is comprised of David Gladstone (our chairman and chief executive officer), Terry Lee Brubaker (our vice chairman and chief operating officer) and Mr. Stelljes (our president and chief investment officer). If this LOI is issued, then the Adviser and Gladstone Securities (our “Due Diligence Team”) will conduct a due diligence investigation and create a detailed profile summarizing the prospective portfolio company’s historical financial statements, industry, competitive position and management team and analyzing its conformity to our general investment criteria. The

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investment professionals then present this profile to the Adviser’s investment committee, which must approve each investment. Further, each investment is available for review by the members of our Board of Directors, a majority of whom are not “interested persons” as defined in Section 2(a)(19) of the 1940 Act.

Prospective Portfolio Company Characteristics

We have identified certain characteristics that we believe are important in identifying and investing in prospective portfolio companies. The criteria listed below provide general guidelines for our investment decisions, although not all of these criteria may be met by each portfolio company.

Extensive Due Diligence

Our Due Diligence Team conducts what we believe are extensive due diligence investigations of our prospective portfolio companies and investment opportunities. The due diligence investigation may begin with a review of publicly available information followed by in depth business analysis, including, but not limited to, some or all of the following:

Upon completion of a due diligence investigation and a decision to proceed with an investment, the Adviser’s investment professionals who have primary responsibility for the investment present the investment opportunity to the Adviser’s investment committee. The investment committee then determines whether to pursue the potential investment. Additional due diligence of a potential investment may be conducted on our behalf by attorneys and independent accountants, as well as other outside advisers, prior to the closing of the investment, as appropriate.

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We also rely on the long-term relationships that the Adviser’s investment professionals have with venture capitalists, leveraged buyout funds, investment bankers, commercial bankers, private equity sponsors, and business brokers. In addition, the extensive direct experiences of our executive officers and managing directors in the operations of and providing debt and equity capital to small and medium-sized private businesses plays a significant role in our investment evaluation and assessment of risk.

Investment Structure

Once we have determined that an investment meets our standards and investment criteria, we work with the management of that company and other capital providers to structure the transaction in a way that we believe will provide us with the greatest opportunity to maximize our return on the investment, while providing appropriate incentives to management of the company. As discussed above, the capital classes through which we typically structure a deal include senior debt, senior subordinated debt, junior subordinated debt, and preferred and common equity or equivalents. Through our risk management process, we seek to limit the downside risk of our investments by:

We expect to hold most of our investments in senior debt and senior and junior subordinated debt until maturity or repayment, but may sell our investments (including our equity investments) earlier if a liquidity event takes place, such as the sale or recapitalization of a portfolio company or, in the case of an equity investment in a company, its initial public offering. Occasionally, we may sell some or all of our investment interests in a portfolio company to a third party, such as an existing investor in the portfolio company, in a privately negotiated transaction.

Hedging Strategies

Although a portfolio company of ours has never gone public and we do not expect one of our portfolio companies to go public in the near future, we may undertake hedging strategies with regard to any equity interests that we may have in a portfolio company that goes public. We may mitigate risks associated with the volatility of publicly-traded securities by, for example, selling securities short or writing or buying call or put options. Hedging against a decline in the value of such investments in public companies would not eliminate fluctuations in the values of such investments or prevent losses if the values of such investments decline, but would establish or enhance a hedging strategy to seek to protect our investment in such securities. Therefore, by engaging in hedging transactions, we would seek to moderate the decline in the value of our hedged investments in public companies. However, such hedging transactions could also limit our opportunity to gain from an increase in the value of our investment in the public company. In the future, we may enter into hedging transactions, such as interest rate cap agreements, in connection with the borrowings that we make under our line of credit. We currently do not hold any interest rate cap agreements, although we have done so in the past. Hedging strategies can pose risks to us and our stockholders; however we believe that such activities are manageable because they will be limited to only a portion of our portfolio.

Section 12(a)(3) of the 1940 Act prohibits us from effecting a short sale of any security “in contravention of such rules and regulations or orders as the [Securities and Exchange Commission (“SEC”)] may prescribe as necessary or appropriate in the public interest or for the protection of investors . . ..” While the SEC has not promulgated regulations under this statute to date, it is possible that such regulations could be promulgated in the future in a way that would require us to change any hedging strategies that we may adopt. In addition, our ability to engage in short sales may be limited by the 1940 Act’s leverage limitations. We will only engage in hedging activities in compliance with applicable laws and regulations.

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Competitive Advantages

A large number of entities compete with us and make the types of investments that we seek to make in small and medium-sized privately-owned businesses. Such competitors include private equity funds, leveraged buyout funds, venture capital funds, investment banks and other equity and non-equity based investment funds, and other financing sources, including traditional financial services companies such as commercial banks. Many of our competitors are substantially larger than we are and have considerably greater funding sources that are not available to us. In addition, certain of our competitors may have higher risk tolerances or different risk assessments, which could allow them to consider a wider variety of investments, establish more relationships and build their market shares. Furthermore, many of these competitors are not subject to the regulatory restrictions that the 1940 Act imposes on us as a BDC. However, we believe that we have the following competitive advantages over other providers of financing to small and mid-sized businesses.

Management Expertise

David Gladstone, our chairman and chief executive officer, is also the chairman and chief executive officer of the Adviser and its affiliated companies, other than Gladstone Securities, (the “Gladstone Companies”), and has been involved in all aspects of the Gladstone Companies’ investment activities, including serving as a member of the Adviser’s investment committee. Terry Lee Brubaker is our vice chairman and chief operating officer and has substantial experience in acquisitions and operations of companies. George Stelljes III is our president and chief investment officer and has extensive experience in leveraged finance. Messrs. Gladstone, Brubaker and Stelljes are also executive officers of the Adviser and, as a result, have principal management responsibility for the Adviser. These three individuals dedicate a significant portion of their time to managing our investment portfolio. Our senior management has extensive experience providing capital to small and mid-sized companies and has worked together at the Gladstone Companies for more than ten years. In addition, we have access to the resources and expertise of the Adviser’s investment professionals and supporting staff who possess a broad range of transactional, financial, managerial and investment skills.

Increased Access to Investment Opportunities Developed Through Proprietary Research Capability and an Extensive Network of Contacts

The Adviser seeks to identify potential investments through active origination and due diligence and through its dialogue with numerous management teams, members of the financial community and potential corporate partners with whom the Adviser’s investment professionals have long-term relationships. We believe that the Adviser’s investment professionals have developed a broad network of contacts within the investment, commercial banking, private equity and investment management communities, and that their reputation in investment management enables us to identify well-positioned prospective portfolio companies, which provide attractive investment opportunities. Additionally, the Adviser expects to generate information from its professionals’ network of accountants, consultants, lawyers and management teams of portfolio companies and other companies.

Disciplined, Value and Income-Oriented Investment Philosophy with a Focus on Preservation of Capital

In making its investment decisions, the Adviser focuses on the risk and reward profile of each prospective portfolio company, seeking to minimize the risk of capital loss without foregoing the potential for capital appreciation. We expect the Adviser to use the same value and income-oriented investment philosophy that its professionals use in the management of the other Gladstone Companies and to commit resources to management of downside exposure. The Adviser’s approach seeks to reduce our risk in investments by using some or all of the following approaches:

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Longer Investment Horizon with Attractive Publicly-traded Model

Unlike private equity and venture capital funds that are typically organized as finite-life partnerships, we are not subject to standard periodic capital return requirements. The partnership agreements of most private equity and venture capital funds typically provide that these funds may only invest investors’ capital once and must return all capital and realized gains to investors within a finite time period, often seven to ten years. These provisions often force private equity and venture capital funds to seek returns on their investments by causing their portfolio companies to pursue mergers, public equity offerings, or other liquidity events more quickly than might otherwise be optimal or desirable, potentially resulting in a lower overall return to investors and/or an adverse impact on their portfolio companies. We believe that our flexibility to make investments with a long-term view and without the capital return requirements of traditional private investment vehicles provides us with the opportunity to achieve greater long-term returns on invested capital.

Flexible Transaction Structuring

We believe our management team’s broad expertise and its ability to draw upon many years of combined experience enables the Adviser to identify, assess, and structure investments successfully across all levels of a company’s capital structure and manage potential risk and return at all stages of the economic cycle. We are not subject to many of the regulatory limitations that govern traditional lending institutions, such as banks. As a result, we are flexible in selecting and structuring investments, adjusting investment criteria and transaction structures and, in some cases, the types of securities in which we invest. We believe that this approach enables the Adviser to identify attractive investment opportunities that will continue to generate current income and capital gain potential throughout the economic cycle, including during turbulent periods in the capital markets. One example of our flexibility is our ability to exchange our publicly-traded stock for the stock of an acquisition target in a tax-free reorganization under the Code. After completing an acquisition in such an exchange, we can restructure the capital of the small company to include senior and subordinated debt.

Leverage

For the purpose of making investments and taking advantage of favorable interest rates, we may issue senior securities up to the maximum amount permitted by the 1940 Act. The 1940 Act currently permits us to issue senior securities representing indebtedness and senior securities that are stock, to which we refer collectively as “Senior Securities,” in amounts such that we maintain an asset coverage ratio, as defined in Section 18(h) of the 1940 Act, of at least 200% on our Senior Securities immediately after each issuance of such Senior Securities. We may also incur such indebtedness to repurchase our common stock. As a result of incurring indebtedness generally, such as through our revolving line of credit or issuing senior securities representing indebtedness, such as our Term Preferred Stock, exposed to the risks of leverage. Although borrowing money for investments increases the potential for gain, it also increases the risk of a loss. A decrease in the value of our investments will have a greater impact on the value of our common stock to the extent that we have borrowed money to make investments. There is a possibility that the costs of borrowing could exceed the income we receive on the investments we make with such borrowed funds. Our Board of Directors is authorized to provide for the issuance of Senior Securities with such preferences, powers, rights and privileges as it deems appropriate, subject to the requirements of the 1940 Act. See “Regulation as a BDC—Asset Coverage” for a discussion of our leveraging constraints.

Ongoing Management of Investments and Portfolio Company Relationships

The Adviser’s investment professionals actively oversee each investment by continuously evaluating the portfolio company’s performance and typically working collaboratively with the portfolio company’s management to identify and incorporate best resources and practices that help us achieve our projected investment performance.

Monitoring

The Adviser’s investment professionals monitor the financial performance, trends, and changing risks of each portfolio company on an ongoing basis to determine if each company is performing within expectations and to guide the portfolio company’s management in taking the appropriate courses of action. The Adviser employs various methods of evaluating and monitoring the performance of our investments in portfolio companies, which can include the following:

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Relationship Management

The Adviser’s investment professionals interact with various parties involved with a portfolio company, or investment, by actively engaging with internal and external constituents, including:

Managerial Assistance and Services

As a BDC, we make available significant managerial assistance to our portfolio companies and provide other services to such portfolio companies. Neither we, nor the Adviser, currently receive fees in connection with the managerial assistance we make available. At times, the Adviser provides other services to certain of our portfolio companies and it receives fees for these other services. We credit 50% of certain of these fees and 100% of others against the base management fee that we would otherwise be required to pay to the Adviser.

In February 2011, Gladstone Securities started providing other services (such as investment banking and due diligence services) to certain of our portfolio companies. The fees the portfolio companies paid to Gladstone Securities do not impact the overall fees we pay to the Adviser or the overall fees credited against the base management fee.

Valuation Process

The following is a general description of the steps we take each quarter to determine the value of our investment portfolio. We value our investments in accordance with the requirements of the 1940 Act. We value securities for which market quotations are readily available at their market value. We value all other securities and assets at fair value as determined in good faith by our Board of Directors. In determining the value of our investments, the Adviser has established an investment valuation policy (the “Policy”). The Policy has been approved by our Board of Directors and each quarter the Board of Directors reviews whether the Adviser has applied the Policy consistently and votes whether or not to accept the recommended valuation of our investment portfolio. Due to the uncertainty inherent in the valuation process, such estimates of fair value may differ significantly from the values that would have been obtained had a ready market for the securities existed. Investments for which market quotations are readily available are recorded in our financial statements at such market quotations. With respect to any investments for which market quotations are not readily available, we perform the following valuation process each quarter:

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Our valuation policies, procedures and processes are more fully described under “Management’s Discussion and Analysis of Financial Condition and Results of Operations — Critical Accounting Policies — Investment Valuation.”

Investment Advisory and Management Agreements

In 2004, we entered into an investment advisory and management agreement with the Adviser (as amended, the “Advisory Agreement”). Mr. Gladstone, our chairman and chief executive officer, controls the Adviser. In accordance with the Advisory Agreement, we pay the Adviser fees as compensation for its services, consisting of a base management fee and an incentive fee. On July 10, 2012, our Board of Directors approved the renewal of the Advisory Agreement through August 31, 2013.

Base Management Fee

The base management fee is computed and payable quarterly and is assessed at an annual rate of 2.0% computed on the basis of the value of our average gross assets at the end of the two most recently completed quarters, which are total assets, including investments made with proceeds of borrowings, less any uninvested cash or cash equivalents resulting from borrowings. Overall, the base management fee cannot exceed 2.0% of total assets (as reduced by cash and cash equivalents pledged to creditors) during any given fiscal year. In addition, the following three items are potential adjustments to the base management fee calculation.

The Adviser also services the loans held by our wholly-owned subsidiary, Gladstone Business Loan, LLC (“Business Loan”), in return for which the Adviser generally receives a 1.5% annual fee based on the monthly aggregate outstanding balance of loans pledged under our line of credit. Since we own these loans, all loan servicing fees paid to the Adviser are treated as reductions directly against the 2.0% base management fee under the Advisory Agreement.

Under the Advisory Agreement, the Adviser has also provided and continues to provide managerial assistance and other services to our portfolio companies and may receive fees for services other than managerial assistance. We credit 50% of certain of these fees and 100% of others against the base management fee that we would otherwise be required to pay to the Adviser.

Our Board of Directors accepted an unconditional and irrevocable voluntary waiver from the Adviser to reduce the annual 2.0% base management fee on senior syndicated loan participations to 0.5%, to the extent that proceeds resulting from borrowings were used to purchase such syndicated loan participations, for the years ended September 30, 2012 and 2011.

Incentive Fee

The incentive fee consists of two parts: an income-based incentive fee and a capital gains-based incentive fee. The income-based incentive fee rewards the Adviser if our quarterly net investment income (before giving effect to any incentive fee) exceeds 1.75% of our net assets (the “hurdle rate”). We will pay the Adviser an income-based incentive fee with respect to our pre-incentive fee net investment income in each calendar quarter as follows:

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Quarterly Incentive Fee Based on Net Investment Income

Pre-incentive fee net investment income

(expressed as a percentage of the value of net assets)

Percentage of pre-incentive fee net investment income

allocated to income-related portion of incentive fee

The second part of the incentive fee is a capital gains-based incentive fee that is determined and payable in arrears as of the end of each fiscal year (or upon termination of the Advisory Agreement, as of the termination date), and equals 20% of our realized capital gains as of the end of the fiscal year. In determining the capital gains-based incentive fee payable to the Adviser, we calculate the cumulative aggregate realized capital gains and cumulative aggregate realized capital losses since our inception, and the aggregate unrealized capital depreciation as of the date of the calculation, as applicable, with respect to each of the investments in our portfolio. For this purpose, cumulative aggregate realized capital gains, if any, equals the sum of the differences between the net sales price of each investment, when sold, and the original cost of such investment since our inception. Cumulative aggregate realized capital losses equals the sum of the amounts by which the net sales price of each investment, when sold, is less than the original cost of such investment since our inception. Aggregate unrealized capital depreciation equals the sum of the difference, if negative, between the valuation of each investment as of the applicable calculation date and the original cost of such investment. At the end of the applicable year, the amount of capital gains that serves as the basis for our calculation of the capital gains-based incentive fee equals the cumulative aggregate realized capital gains less cumulative aggregate realized capital losses, less aggregate unrealized capital depreciation, with respect to our portfolio of investments. If this number is positive at the end of such year, then the capital gains-based incentive fee for such year equals 20% of such amount, less the aggregate amount of any capital gains-based incentive fees paid in respect of our portfolio in all prior years. We have not incurred capital gains-based incentive fees from inception through September 30, 2012, as cumulative unrealized capital depreciation has exceeded cumulative realized capital gains net of cumulative realized capital losses.

Additionally, in accordance with accounting principles generally accepted in the U.S. (“GAAP”), a capital gains-based incentive fee is calculated using the aggregate cumulative realized capital gains and losses and aggregate cumulative unrealized capital depreciation included in the calculation of the capital gains-based incentive fee plus the aggregate cumulative unrealized capital appreciation. If such amount is positive at the end of a period, then GAAP requires us to record a capital gains-based incentive fee equal to 20% of such amount, less the aggregate amount of actual capital gains-based incentive fees paid in all prior years. If such amount is negative, then there is no accrual for such year. GAAP requires that the capital gains-based incentive fee accrual consider the cumulative aggregate unrealized capital appreciation in the calculation, as a capital gains-based incentive fee would be payable if such unrealized capital appreciation were realized. There can be no assurance that any such unrealized capital appreciation will be realized in the future. No GAAP accrual for a capital gains-based incentive fee has been recorded since our inception through September 30, 2012.

Our Board of Directors accepted an unconditional and irrevocable voluntary waiver from the Adviser to reduce the income-based incentive fee to the extent net investment income did not cover 100% of the distributions to common stockholders for the fiscal years ended September 30, 2012 and 2011 which waivers totaled $0.3 million and $21, respectively.

Administration Agreement

In 2004, we entered into an administration agreement with the Administrator (as amended, the “Administration Agreement”), whereby we pay separately for administrative services. The Administration Agreement provides for quarterly payments equal to our allocable portion of the Administrator’s overhead expenses in performing its obligations under the Administration Agreement, including, but not limited to, rent and salaries and benefits expenses of our chief financial officer and treasurer, chief accounting officer, chief compliance officer, internal counsel and their respective staffs. Our allocable portion of expenses is generally derived by multiplying the Administrator’s total allocable expenses by the percentage of our total assets at the beginning of the quarter in comparison to the total assets at the beginning of the quarter of all companies managed by the Adviser under similar agreements. On July 10, 2012, our Board of Directors approved the renewal of the Administration Agreement through August 31, 2013.

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Material U.S. Federal Income Tax Considerations

Regulated Investment Company Status

To maintain the qualification for treatment as a RIC under Subchapter M of the Code, we must distribute to our stockholders, for each taxable year, at least 90% of our investment company taxable income, which is generally our ordinary income plus short-term capital gains. We refer to this as the annual distribution requirement. We must also meet several additional requirements, including:

Failure to Qualify as a RIC. If we are unable to qualify for treatment as a RIC, we will be subject to tax on all of our taxable income at regular corporate rates. We would not be able to deduct distributions to stockholders, nor would we be required to make such distributions. Distributions would be taxable to our stockholders as dividend income to the extent of our current and accumulated earnings and profits. Subject to certain limitations under the Code, corporate distributees would be eligible for the distributions received deduction. Distributions in excess of our current and accumulated earnings and profits would be treated first as a return of capital to the extent of the stockholder’s tax basis, and then as a gain realized from the sale or exchange of property. If we fail to meet the RIC requirements for more than two consecutive years and then seek to requalify as a RIC, we would be required to recognize a gain to the extent of any unrealized appreciation on our assets unless we make a special election to pay corporate-level tax on any such unrealized appreciation recognized during the succeeding 10-year period. Absent such special election, any gain we recognized would be deemed distributed to our stockholders as a taxable distribution.

Qualification as a RIC. If we qualify as a RIC and distribute to stockholders each year in a timely manner at least 90% of our investment company taxable income, we will not be subject to federal income tax on the portion of our taxable income and gains we distribute to stockholders. We would, however, be subject to a 4% nondeductible federal excise tax if we do not distribute, actually or on a deemed basis, an amount at least equal to the sum of (1) 98% of our ordinary income for the calendar year, (2) 98.2% of our capital gains in excess of capital losses for the one-year period ending on October 31 of the calendar year and (3) any ordinary income and net capital gains for preceding years that were not distributed during such years. For the years ended December 31, 2011 and 2010, we did not incur any excise taxes.

The excise tax would apply only to the amount by which the required distributions exceed the amount of income we distribute, actually or on a deemed basis, to stockholders. We will be subject to regular corporate income tax, currently at rates up to 35%, on any undistributed income, including both ordinary income and capital gains. We intend to retain some or all of our capital gains, but to treat the retained amount as a deemed distribution. In that case, among other consequences, we will pay tax on the retained amount, each stockholder will be required to include its share of the deemed distribution in income as if it had been actually distributed to the stockholder and the stockholder will be entitled to claim a credit or refund equal to its allocable share of the tax we pay on the retained capital gain. The amount of the deemed distribution net of such tax will be added to the stockholder’s cost basis for its common stock. Since we expect to pay tax on any retained capital

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gains at our regular corporate capital gain tax rate, and since that rate is in excess of the maximum rate currently payable by individuals on long-term capital gains, the amount of tax that individual stockholders will be treated as having paid will exceed the tax they owe on the capital gain dividend and such excess may be claimed as a credit or refund against the stockholder’s other tax obligations. A stockholder that is not subject to U.S. federal income tax or tax on long-term capital gains would be required to file a U.S. federal income tax return on the appropriate form in order to claim a refund for the taxes we paid. In order to utilize the deemed distribution approach, we must provide written notice to the stockholder after the close of the relevant tax year. We will also be subject to alternative minimum tax, but any tax preference items would be apportioned between us and our stockholders in the same proportion that distributions, other than capital gain distributions, paid to each stockholder bear to our taxable income determined without regard to the distributions paid deduction.

If we acquire debt obligations that were originally issued at a discount that bear interest at rates that are not either fixed rates or certain qualified variable rates or that are not unconditionally payable at least annually over the life of the obligation, we will be required to include in taxable income each year a portion of the original issue discount (“OID”) that accrues over the life of the obligation. Such OID will be included in our investment company taxable income even though we receive no cash corresponding to such discount amount. As a result, we may be required to make additional distributions corresponding to such OID amounts in order to satisfy the annual distribution requirement and to continue to qualify as a RIC or to avoid the 4% excise tax. In this event, we may be required to sell investments or other assets to meet the RIC distribution requirements. Our OID investments totaled $94.9 million as of September 30, 2012, at cost, due to the large number of syndicated loan investments we made during fiscal 2011. For the year ended September 30, 2012, we incurred $0.3 million of OID income and the unamortized balance of OID investments as of September 30, 2012 totaled $1.1 million.

Taxation of Our U.S. Stockholders

Distributions. For any period during which we qualify for treatment as a RIC for federal income tax purposes, distributions to our stockholders attributable to our investment company taxable income generally will be taxable as ordinary income to stockholders to the extent of our current or accumulated earnings and profits. We first allocate our earnings and profits to our preferred stockholders and then to our common stockholders based on priority in our capital structure. Any distributions in excess of our earnings and profits will first be treated as a return of capital to the extent of the stockholder’s adjusted basis in his or her shares of common stock and thereafter as gain from the sale of shares of our common stock. Distributions of our long-term capital gains, reported by us as such, will be taxable to stockholders as long-term capital gains regardless of the stockholder’s holding period for its common stock and whether the distributions are paid in cash or invested in additional common stock. Corporate stockholders are generally eligible for the 70% distributions received deduction with respect to ordinary income, but not for capital gains dividends to the extent such amount reported by us does not exceed the dividends received by us from domestic corporations. Any dividend declared by us in October, November or December of any calendar year, payable to stockholders of record on a specified date in such a month and actually paid during January of the following year, will be treated as if it were paid by us and received by the stockholders on December 31 of the previous year. In addition, we may elect (in accordance with Section 855(a) of the Code) to relate a dividend back to the prior taxable year if we (1) declare such dividend prior to the later of the due date for filing our return for that taxable year or the 15^th day of the ninth month following the close of the taxable year, (2) make the election in that return, and (3) distribute the amount in the 12-month period following the close of the taxable year but not later than the first regular dividend payment of the same type following the declaration. Any such election will not alter the general rule that a stockholder will be treated as receiving a dividend in the taxable year in which the dividend is made, subject to the October, November, December rule described above.

If a common stockholder participates in our dividend reinvestment plan, any distributions reinvested under the plan will be taxable to the common stockholder to the same extent, and with the same character, as if the common stockholder had received the distribution in cash. The common stockholder will have an adjusted basis in the additional common shares purchased through the plan equal to the amount of the reinvested distribution. The additional shares will have a new holding period commencing on the day following the day on which the shares are credited to the common stockholder’s account. We do not have a dividend reinvestment plan for our preferred stock shareholders.

Sale of Our Shares. A U.S. stockholder generally will recognize taxable gain or loss if the U.S. stockholder sells or otherwise disposes of his, her or its shares of our common stock. Any gain arising from such sale or disposition generally will be treated as long-term capital gain or loss if the U.S. stockholder has held his, her or its shares for more than one year. Otherwise, it will be classified as short-term capital gain or loss. However, any capital loss arising from the sale or disposition of shares of our common stock held for six months or less will be treated as long-term capital loss to the extent of the amount of capital gain distributions received, or undistributed capital gain deemed received, with respect to such shares. Under the tax laws in effect as of the date of this filing, individual U.S. stockholders are subject to a maximum federal

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income tax rate of 15% on their net capital gain (i.e. the excess of realized net long-term capital gain over realized net short-term capital loss for a taxable year) including any long-term capital gain derived from an investment in our shares. Such rate is lower than the maximum rate on ordinary income currently payable by individuals. Corporate U.S. stockholders currently are subject to federal income tax on net capital gain at the same rates applied to their ordinary income (currently up to a maximum of 35%). Capital losses are subject to limitations on use for both corporate and non-corporate stockholders.

Backup Withholding. We may be required to withhold federal income tax, or backup withholding, currently at a rate of 28%, from all taxable distributions to any non-corporate U.S. stockholder (1) who fails to furnish us with a correct taxpayer identification number or a certificate that such stockholder is exempt from backup withholding, or (2) with respect to whom the Internal Revenue Service (“IRS”) notifies us that such stockholder has failed to properly report certain interest and dividend income to the IRS and to respond to notices to that effect. An individual’s taxpayer identification number is generally his or her social security number. Any amount withheld under backup withholding is allowed as a credit against the U.S. stockholder’s federal income tax liability, provided that proper information is provided to the IRS.

Regulation as a BDC

We are a closed-end, non-diversified management investment company that has elected to be regulated as a BDC under Section 54 of the 1940 Act. As such, we are subject to regulation under the 1940 Act. The 1940 Act contains prohibitions and restrictions relating to transactions between BDCs and their affiliates, principal underwriters and affiliates of those affiliates or underwriters and requires that a majority of the directors be persons other than “interested persons,” as defined in the 1940 Act. In addition, the 1940 Act provides that we may not change the nature of our business so as to cease to be, or to withdraw our election as, a BDC unless approved by a majority of our outstanding “voting securities,” as defined in the 1940 Act.

We intend to conduct our business so as to retain our status as a BDC. A BDC may use capital provided by public stockholders and from other sources to invest in long-term private investments in businesses. A BDC provides stockholders the ability to retain the liquidity of a publicly-traded stock while sharing in the possible benefits, if any, of investing in primarily privately owned companies. In general, a BDC must have been organized and have its principal place of business in the U.S. and must be operated for the purpose of making investments in qualifying assets, as described in Sections 55(a)(1) through (a)(3) of the 1940 Act.

Qualifying Assets

Under the 1940 Act, a BDC may not acquire any asset other than assets of the type listed in Section 55(a) of the 1940 Act, which are referred to as qualifying assets, unless, at the time the acquisition is made, qualifying assets, other than certain interests in furniture, equipment, real estate, or leasehold improvements (“operating assets”) represent at least 70% of our total assets, exclusive of operating assets. The types of qualifying assets in which we may invest under the 1940 Act include, but are not limited to, the following:

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Asset Coverage

Pursuant to Section 61(a)(2) of the 1940 Act, we are permitted, under specified conditions, to issue multiple classes of senior securities representing indebtedness. However, pursuant to Section 18(c) of the 1940 Act, we are permitted to issue only one class of senior securities that is stock. In either case, we may only issue such Senior Securities if such class of Senior Securities, after such issuance, has an asset coverage, as defined in Section 18(h) of the 1940 Act, of at least 200%.

In addition, our ability to pay dividends or distributions (other than dividends payable in our stock) to holders of any class of our capital stock would be restricted if our senior securities representing indebtedness fail to have an asset coverage of at least 200% (measured at the time of declaration of such distribution and accounting for such distribution). The 1940 Act does not apply this limitation to privately arranged debt that is not intended to be publicly distributed, unless this limitation is specifically negotiated by the lender. In addition, our ability to pay dividends or distributions (other than dividends payable in our common stock) to our common stockholders would be restricted if our senior securities that are stock fail to have an asset coverage of at least 200% (measured at the time of declaration of such distribution and accounting for such distribution). If the value of our assets declines, we might be unable to satisfy these asset coverage requirements. To satisfy the 200% asset coverage requirement in the event that we are seeking to pay a distribution, we might either have to (i) liquidate a portion of our loan portfolio to repay a portion of our indebtedness or (ii) issue common stock. This may occur at a time when a sale of a portfolio asset may be disadvantageous, or when we have limited access to capital markets on a agreeable terms. In addition, any amounts that we use to service our indebtedness or for offering expenses will not be available for distributions to our stockholders. If we are unable to regain asset coverage through these methods, we may be forced to suspend the payment of such dividends.

Significant Managerial Assistance

A BDC generally must make available significant managerial assistance to issuers of certain of its portfolio securities that the BDC counts as a qualifying asset for the 70% test described above. Making available significant managerial assistance means, among other things, any arrangement whereby the BDC, through its directors, officers or employees, offers to provide, and, if accepted, does so provide, significant guidance and counsel concerning the management, operations or business objectives and policies of a portfolio company. Significant managerial assistance also includes the exercise of a controlling influence over the management and policies of the portfolio company. However, with respect to certain, but not all such securities, where the BDC purchases such securities in conjunction with one or more other persons acting together, one of the other persons in the group may make available such managerial assistance, or the BDC may exercise such control jointly.

Investment Policies

We seek to achieve a high level of current income and capital gains through investments in debt securities and preferred and common stock that we acquired in connection with buyout and other recapitalizations. The following investment policies, along with these investment objectives, may not be changed without the approval of our Board of Directors:

With the exception of our policy to conduct our business as a BDC, these policies are not fundamental and may be changed without stockholder approval.

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Code of Ethics

We and all of the Gladstone Companies (and Gladstone Securities) have adopted a code of ethics and business conduct applicable to all personnel of such companies that complies with the guidelines set forth in Item 406 of Regulation S-K of the Securities Act of 1933 (the “Securities Act”). As required by the 1940 Act, this code establishes procedures for personal investments, restricts certain transactions by such personnel and requires the reporting of certain transactions and holdings by such personnel. A copy of this code is available for review, free of charge, at our website at www.GladstoneCapital.com. We intend to provide any required disclosure of any amendments to or waivers of the provisions of this code by posting information regarding any such amendment or waiver to our website within four days of its effectiveness.

Compliance Policies and Procedures

We and the Adviser have adopted and implemented written policies and procedures reasonably designed to prevent violation of the federal securities laws, and our Board of Directors is required to review these compliance policies and procedures annually to assess their adequacy and the effectiveness of their implementation. We have designated a chief compliance officer, John Dellafiora, Jr., who also serves as chief compliance officer for all other Gladstone Companies and Gladstone Securities.

Staffing

We do not currently have any employees and do not expect to have any employees in the foreseeable future. Currently, services necessary for our business are provided by individuals who are employees of the Adviser and the Administrator pursuant to the terms of the Advisory Agreement and the Administration Agreement, respectively. No employee of the Adviser or the Administrator will dedicate all of his or her time to us. However, we expect that 25-30 full time employees of the Adviser and the Administrator will spend substantial time on our matters during the remainder of calendar year 2012 and all of calendar year 2013. To the extent we acquire more investments, we anticipate that the number of employees of the Adviser and the Administrator who devote time to our matters will increase.

As of November 9, 2012, the Adviser and the Administrator collectively had 56 full-time employees. A breakdown of these employees is summarized by functional area in the table below:

Available Information

Copies of our annual report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and amendments, if any, to those reports filed pursuant to Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended (the “Exchange Act”) are available free of charge through our website at www.GladstoneCapital.com. A request for any of these reports may also be submitted to us by sending a written request addressed to Investor Relations, Gladstone Capital Corporation, 1521 Westbranch Drive, Suite 200, McLean, VA 22102, or by calling our toll-free investor relations line at 1-866-366-5745. The public may read and copy materials that we file with the SEC at the SEC’s Public Reference Room at 100 F Street, NE, Washington, DC 20549. Information on the operation of the Public Reference Room may be obtained by calling the SEC at 1-800-SEC-0330. The SEC also maintains a website that contains reports, proxy and information statements, and other information regarding issuers that file electronically with the SEC at www.sec.gov.

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Item 1A. Risk Factors

An investment in our securities involves a number of significant risks and other factors relating to our structure and investment objectives. As a result, we cannot assure you that we will achieve our investment objectives. 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. You should consider carefully the following information before making an investment in our securities.

Risks Related to the Economy

The uncertainty surrounding the strength of the U.S. economic recovery and the capital markets volatility in general increases the possibility of adverse effects on our financial position and results of operations. Continued economic adversity could impair our portfolio companies’ financial positions and operating results, affect the industries in which we invest, and reduce our volume of new investment activity, thereby harming our operating results. Continued adversity in the capital markets could impact our ability to raise capital and reduce our volume of new investments.

The U.S. is continuing to recover from the recession that largely began in late 2007. While economic conditions generally appear to be improving, we remain cautious about a long-term economic recovery. The recession in general, and the disruptions in the capital markets in particular, have impacted our liquidity options and increased our cost of debt and equity capital. As a result, we do not know if adverse conditions will again intensify, and we are unable to gauge the full extent to which the disruptions will continue to affect us. The longer these uncertain conditions persist, the greater the probability that these factors could continue to increase our costs of, and significantly limit our access to, debt and equity capital and, thus, have an adverse effect on our operations and financial results. Many of our portfolio companies and the companies we may invest in prospectively are also susceptible to these unstable economic conditions, which may affect the ability of one or more of our portfolio companies to repay our loans or engage in a liquidity event, such as a sale, recapitalization or initial public offering. These unstable economic conditions could also disproportionately impact some of the industries in which we invest, causing us to be more vulnerable to losses in our portfolio, which could cause the number of non-performing assets to increase and the fair value of our portfolio to decrease. The unstable economic conditions may also decrease the value of collateral securing some of our loans as well as the value of our equity investments, which would decrease our ability to borrow under our line of credit or raise equity capital, thereby further reducing our ability to make new investments.

In November 2011, we completed an offering of 1.5 million shares of 7.125% Series 2016 Term Preferred Stock (“Term Preferred Stock”); however, there can be no assurance that we will be able to raise additional equity capital in the near future. See “Management Discussion and Analysis of Financial Condition and Results of Operation – Equity Activity” for additional information on our Term Preferred Stock issuance.

The unstable economic conditions have affected the availability of credit generally. We do not know when market conditions will stabilize, if adverse conditions will intensify or the full extent to which the disruptions will continue to affect us. Also, it is possible that persistent instability of the financial markets could have other unforeseen material effects on our business.

The downgrade of the United States credit rating and the ongoing economic crisis in Europe could negatively impact our liquidity, financial condition and earnings.

Recent U.S. debt ceiling and budget deficit concerns, together with signs of deteriorating sovereign debt conditions in Europe, have increased the possibility of additional credit-rating downgrades and economic slowdowns. Although U.S. lawmakers passed legislation to raise the federal debt ceiling, Standard & Poor’s Ratings Services lowered its long-term sovereign credit rating on the U.S. from “AAA” to “AA+” in August 2011. The impact of this or any further downgrades to the U.S. government’s sovereign credit rating, or its perceived creditworthiness, and the impact of the current crisis in Europe with respect to the ability of certain European Union countries to continue to service their sovereign debt obligations is inherently unpredictable and could adversely affect the U.S. and global financial markets and economic conditions. There can be no assurance that governmental or other measures to aid economic recovery will be effective. These fairly recent developments, and the government’s credit concerns in general, 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.

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

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 External Management

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

We have no employees. Our chief executive officer, president and chief investment 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, George Stelljes III and Terry Lee Brubaker in this regard. 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 could have a material adverse effect on our ability to achieve our investment objectives.

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 — Investment Advisory and Management Agreements.”

The Adviser’s failure to identify and invest in securities that meet our investment criteria or perform its responsibilities under the Advisory Agreement may 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 could have a material adverse effect on our business, financial condition, and results of operations.

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There are significant potential conflicts of interest 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 chairman of the board and chief executive officer of the Adviser, Gladstone Investment and Gladstone Commercial and the chairman, chief executive officer and sole stockholder of Gladstone Land. In addition, Mr. Brubaker, our vice chairman and chief operating officer is the vice chairman and chief operating officer of the Adviser and Gladstone Land and co-vice chairman and chief operating officer of Gladstone Investment and Gladstone Commercial. Mr. Stelljes, our president and chief investment officer, is also the president and chief investment officer of the Adviser and Gladstone Land and co-vice chairman and chief investment officer of Gladstone Investment and Gladstone Commercial. 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. On October 10, 2012, our Board of Directors approved a revision of our investment objectives and strategies, effective on or about 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.

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, 2012, our Board of Directors has approved the following types of co-investment transactions:

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 all 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

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services to such portfolio companies. Although, neither we nor the Adviser currently receives fees in connection with managerial assistance, the Adviser and Gladstone Securities have, at various times, provided other services to certain of our portfolio companies and received fees for these other services.

The Adviser is not obligated to provide a waiver of the base management fee, which could negatively impact our earnings and our ability to maintain our current level of distributions to our common 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 waivers to reduce the annual 2.0% base management fee 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 waivers 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 waivers in future quarters, it could negatively impact our earnings and may compromise our ability to maintain our current level of distributions to our common stockholders, which could have a material adverse impact on the price of our common stock.

Our business model is dependent upon developing and sustaining strong referral relationships with investment bankers, business brokers and other intermediaries.

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 loans and fully execute our business plan.

Risks Related to Our External Financing

In addition to regulatory limitations on our ability to raise capital, our credit facility 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 loans. As of September 30, 2012, we had $58.8 million in borrowings outstanding under our fourth amended and restated credit agreement, which provides for maximum borrowings of $137.0 million (the “Credit Facility”). 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. Pursuant to the terms of our Credit Facility, we are subject to certain limitations on the type of loan investments we make, including restrictions on geographic concentrations, sector concentrations, loan size, payment frequency and status, average life and lien property. The credit agreement also requires us to comply with other financial and operational covenants, which require us to, among other things, maintain certain financial ratios, including asset and interest coverage and a minimum net worth and a minimum number of obligors required in the borrowing base of the credit agreement. As of September 30, 2012, we were in compliance with these covenants; however, our continued compliance depends on many factors, some of which are beyond our control. Current market conditions have forced us to write down the value of a portion of our assets, as required by the 1940 Act and fair value accounting rules. These are not realized losses, but constitute adjustments in asset values for purposes of financial reporting and for collateral value for our Credit Facility. As assets are marked down in value, the amount we can borrow on our Credit Facility decreases. As of September 30, 2012, our net assets were $188.6 million, down from $213.7 million as of September 30, 2011, primarily a result of unrealized depreciation over the preceding twelve months.

Additionally, under our Credit Facility, we are required to maintain a minimum net worth (which includes the value of our Term Preferred Stock) of $190.0 million plus 50.0% of all equity and subordinated debt raised after January 19, 2012. At September 30, 2012, we had a minimum net worth of $227.1 million. 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. Under our Credit Facility, we are also required to maintain our status as a BDC under the 1940 Act and as a RIC under the Code. There are no assurances that we will continue to comply with these covenants. 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.

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Any inability to renew, extend or replace our line of credit 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.

Under certain circumstances, our Credit Facility may be expanded to a maximum of $237.0 million through the addition of other committed lenders to the facility. If additional lenders are unwilling to join the facility on its terms, we will be unable to expand the facility and may have limited availability to finance new investments under our Credit Facility in the future. If not renewed or extended by January 19, 2015 (the “Maturity Date”), all principal and interest will be due and payable on or before January 19, 2016 (one year after the Maturity Date). There can be no guarantee that we will be able to renew, extend or replace the Credit Facility upon its maturity in 2015 on terms that are favorable to us, if at all. Our ability to expand the Credit Facility, and to obtain replacement financing at the time of its maturity, will be constrained by then-current economic conditions affecting the credit markets. In the event that we are not able to expand the Credit Facility, or to renew, extend or refinance the Credit Facility at the time of its maturity, 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.

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 Term Preferred Stock, which would 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 percentage. If we are able to renew, extend or refinance our Credit Facility prior to maturity, any renewal, extension or refinancing of the Credit Facility may potentially 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.

Although we completed an offering of Term Preferred Stock in November 2011, 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 finance 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 an outstanding indebtedness of $58.8 million as of September 30, 2012, the effective annual interest rate of 5.95% as of that date, and aggregate liquidation preference of our Term Preferred Stock of $38.5 million, our investment portfolio at fair value would have had to produce an annual return of at least 2.2% to cover annual interest payments on the outstanding debt and dividends on our Term Preferred Stock.

A change in interest rates may adversely affect our profitability.

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.

We ultimately expect approximately 90% of the loans in our portfolio to be at variable rates determined on the basis of the LIBOR and approximately 10% to be at fixed rates, although we reassess the target mix of fixed and variable rate investments on a periodic basis. As of September 30, 2012, our portfolio had approximately 88.4% of the total loan cost value at variable rates with floors, approximately 5.0% of the total of the loan cost value at variable rates without a floor or ceiling and approximately 6.6% of the total loan portfolio cost basis at fixed rates. From time to time, we may enter into hedging instruments to help insulate us against adverse fluctuations in interest rates, however, during the years ended September 30, 2012 and 2011, we did not enter into any such instruments.

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Risks Related to Our Investments

We operate in a highly competitive market for investment opportunities.

A large number of entities compete with us and make the types of investments that we seek to make in small and mid-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 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.

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 established an investment valuation policy and consistently applied valuation procedures used to determine the fair value of these securities quarterly. These procedures for the determination of value of many of our debt securities rely on the opinions of value submitted to us by SPSE or the use of internally developed discounted cash flow (“DCF”) methodologies or indicative bid prices (“IBP”) offered by the respective originating syndication agent’s trading desk, or secondary desk, specifically for our syndicated loans, or internal methodologies based on the total enterprise value (“TEV”) of the issuer used for certain of our equity investments. SPSE will only evaluate the debt portion of our investments for which we specifically request evaluation, and SPSE may decline to make requested evaluations for any reason in its sole discretion. However, to date, SPSE has accepted each of our requests for evaluation.

Our use of these fair value methods is inherently subjective and is based on estimates and assumptions of each security. In the event that we are required to sell a security, we may ultimately sell for an amount materially less than the estimated fair value calculated by SPSE, or utilizing the TEV, IBP or the DCF methodology.

Our procedures also include provisions whereby the Adviser will establish the fair value of any equity securities we may hold where SPSE or third-party agent banks are unable to provide evaluations. The types of factors that may be considered in determining the fair value of our debt and equity securities include some or all of the following:

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Because such valuations, particularly valuations of private securities and private companies, are not susceptible to precise determination, may fluctuate over short periods of time, and may be based on estimates, our determinations of fair value may differ from the values that might have actually resulted had a readily available market for these securities been available.

A portion of our assets are, and will continue to be, comprised of equity securities that are valued based on internal assessment using our own valuation methods approved by our Board of Directors, without the input of SPSE or any other third-party evaluator. We believe that our equity valuation methods reflect those regularly used as standards by other professionals in our industry who value equity securities. However, determination of fair value for securities that are not publicly-traded, whether or not we use the recommendations of an independent third-party evaluator, necessarily involves the exercise of subjective judgment. Our NAV could be adversely affected if our determinations regarding the fair value of our investments were materially higher than the values that we ultimately realize upon the disposal of such securities.

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, our 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 our determinations regarding the fair value of our investments are materially different from the values that we ultimately realize upon our disposal of such securities.

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 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 of the other lenders may not be completely aligned with ours. As of September 30, 2012, syndicated loans made up approximately 21.3% of our portfolio at cost, or $77.8 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 generally 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.

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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.

Prepayments of our investments by our portfolio companies could adversely impact our results of operations and reduce our return on equity.

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, 2012, we received principal payments of $60.2 million, of which $47.5 million resulted from ten portfolio companies who paid off early at par. We will first use any proceeds from prepayments to repay any borrowings outstanding on our Credit Facility. 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, 2012, we had investments in 50 portfolio companies, of which there were five investments that comprised approximately $91.8 million or 33.5% 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, 2012, 15.4% of our total assets at fair value were invested in electronics companies, 12.0% were invested in healthcare, education and childcare companies, and 11.5% were invested in mining, steel, iron and non-precious metal companies. 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.

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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 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 providing significant managerial assistance to certain of our portfolio companies, our executive officers sometimes serve as directors on the boards of such companies. To the extent that litigation arises out of our investments in these companies, such executive officers may be named as defendants in such litigation, which could result in additional 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.

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% of our ordinary income and short-term capital gains 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,”

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which we must recognize as ordinary income, increasing the amounts we are required to distribute to maintain RIC status. Because such warrants will not produce distributable cash for us at the same time as we are required to make distributions in respect of the related original issue discount, 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—Competitive Advantages—Leverage” and “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 do not recognize them as income until we have received payment. We sought and received approval for a change in accounting method from the IRS related to our tax treatment for success fees. As a result, we, in effect, will continue to account for the recognition of income from the success fees upon receipt, or when the amount becomes fixed. Prior to January 1, 2011, we treated the success fee amount as a capital gain for tax characterization purposes. However, beginning January 1, 2011, the success fee amounts are characterized as ordinary income for tax purposes. The approved change in accounting method does not require us to retroactively change the capital gains treatment of the success fees received prior to January 1, 2011. As a result, we will be required to distribute such amounts to our stockholders in order to maintain RIC status for success fees we receive after January 1, 2011.

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—Regulated Investment Company Status” 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 articles of incorporation 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 every third year. 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:

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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% 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. In addition, our Board of Directors, without any action by our stockholders, may amend our articles of incorporation from time to time to increase or decrease the aggregate number of shares or the number of shares of any class or series of stock that we have authority to issue. Our Board of Directors may classify or reclassify any unissued common stock or preferred stock and establish the 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 1.5 million shares of Term Preferred Stock. Preferred stock, including our 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 an Investment in Our Common Stock and Our Preferred Stock

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, the level of our expenses, 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.

Our current intention is to distribute at least 90% of our ordinary income and short-term capital gains 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.

Distributions by us have included and may in the future include a return of capital.

Our Board of Directors declares monthly distributions based on estimates of taxable income for each fiscal year, which may differ, and in the past have differed, from actual results. Because our 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 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 a material adverse impact on our ability to make new investments.

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The market price of our shares may fluctuate significantly.

The trading price of our common stock and our preferred stock may fluctuate substantially. The extreme volatility and disruption that have affected the capital and credit markets for over a year have reached unprecedented levels in recent months. We have 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:

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.

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 net asset value 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 stock is trading below its NAV per common share. In the event that we issue subscription rights to our existing stockholders, 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

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dilution of the per common 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.

Shares of closed-end investment companies frequently trade at a discount from net asset value.

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 and at times below NAV per common share. During the past year, our common stock has traded consistently, and at times significantly, below NAV per common share. Subsequent to September 30, 2012, our stock has traded at discounts of up to 6.1% of our NAV per common share, which was $8.98 as of September 30, 2012. This characteristic of shares of closed-end investment companies is separate and distinct from the risk that our NAV per common 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 net asset value. Under the 1940 Act, we are generally not able to issue additional shares of our common stock at a price below NAV per common share to purchasers other than our existing stockholders through a rights offering without first obtaining the approval of our stockholders and our independent directors. Additionally, at times when our stock is trading below its NAV per common 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 trades 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.

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 on February 16, 2012, 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, 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% of our then outstanding common stock immediately prior to each such sale). At the upcoming annual stockholders meeting scheduled for February 14, 2013, 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, and at times significantly, 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 common share, such sales would result in an immediate dilution to the NAV per common share. This dilution would occur as a result of the sale of shares at a price below the then 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 percentage than the increase in our assets resulting from such issuance. The greater the difference between the sale price and the NAV per common 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 predicted. However, if, for example, we sold an additional 10% of our common stock at a 5% 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.

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

The terms of our Term Preferred Stock provide for annual dividends in the amount of $1.7813 per outstanding share of Term Preferred Stock. In accordance with the terms of our Term Preferred Stock, if dividends on the Term Preferred Stock are unpaid in an amount equal to at least two years of dividends, the holders of Term Preferred Stock will be entitled to elect a majority of our Board of Directors.

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Our Term Preferred Stock magnifies the potential for gain or loss for our holders of common stock and the risks of investing in our common stock in the same way as our borrowings.

Preferred stock, which is another form of leverage, has the same risks to our common stockholders as borrowings because the dividends on any preferred stock we issue must be cumulative. Payment of such dividends and repayment of the liquidation preference of such preferred stock must take preference over any dividends or other payments to our common stockholders, and preferred stockholders are less subject to our expenses or losses and are not entitled to participate in any income or appreciation in excess of their stated preference.

An investment in Term Preferred Stock with a fixed interest rate bears interest rate risk.

Our Term Preferred Stock, in general, pays dividends at a fixed dividend rate of 7.125% per year. Prices of fixed income investments generally vary inversely with changes in market yields. The market yields on securities comparable to the Term Preferred Stock may increase, which would likely result in a decline in the secondary market price of the Term Preferred Stock prior to the term redemption date. This risk may be even more significant in light of the low nature of the currently prevailing market interest rates.

A liquid secondary trading market for our Term Preferred Stock may not develop.

Although our Term Preferred Stock is listed for trading on the NASDAQ Global Select Market (“NASDAQ”), such shares are thinly traded, and the market for such shares is relatively illiquid compared to the market for other types of securities, with the spread between the bid and ask prices considerably greater than the spreads of other securities with comparable terms and features.

The Term Preferred Stock is not rated.

We have not had the Term Preferred Stock rated by any rating agency. Unrated securities usually trade at a discount to similar, rated securities. As a result, there is a risk that the shares of our Term Preferred Stock may trade at a price that is lower than they might otherwise trade if they were rated by a rating agency.

The Term Preferred Stock bear a risk of early redemption by us.

We may voluntarily redeem some or all of the Term Preferred Stock on or after December 31, 2012, and we may be forced to redeem some or all of the Term Preferred Stock to meet regulatory requirements and the asset coverage requirements of such shares. Any such redemption may occur at a time that is unfavorable to holders of the Term Preferred Stock. We may have an incentive to redeem the Term Preferred Stock voluntarily before the term redemption date if market conditions allow us to issue other preferred stock or debt securities at a rate that is lower than the fixed dividend rate on the Term Preferred Stock.

Claims of holders of our Term Preferred Stock are subject to a risk of subordination relative to holders of our debt instruments.

Rights of holders of our Term Preferred Stock are subordinated to the rights of holders of our indebtedness. Therefore, dividends, distributions and other payments to holders of Term Preferred Stock in liquidation or otherwise may be subject to prior payments due to the holders of our indebtedness. In addition, under some circumstances the 1940 Act may provide debt holders with voting rights that are superior to the voting rights of holders of the Term Preferred Stock.

Holders of our Term Preferred Stock are subject to inflation risk.

Inflation is the reduction in the purchasing power of money resulting from the increase in the price of goods and services. Inflation risk is the risk that the inflation-adjusted, or “real,” value of an investment in Term Preferred Stock or the income from that investment will be worth less in the future. As inflation occurs, the real value of the Term Preferred Stock and dividends payable on such shares declines.

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Holders of our Term Preferred Stock bear reinvestment risk.

Given the five-year term and potential for early redemption of the Term Preferred Stock, holders of such shares may face an increased reinvestment risk, which is the risk that the return on an investment purchased with proceeds from the sale or redemption of the Term Preferred Stock may be lower than the return previously obtained from the investment in such shares.

Holders of our Term Preferred Stock bear dividend risk.

We may be unable to pay dividends on the Term Preferred Stock under some circumstances. The terms of our indebtedness preclude the payment of dividends in respect of equity securities, including the Term Preferred Stock, under certain conditions.

There is a risk of delay in our redemption of our Term Preferred Stock, and we may fail to redeem such securities as required by their terms.

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 obtain cash equal to the value at which we record our investments quickly if a need arises. If we are unable to obtain sufficient liquidity prior to the term redemption date, we may be forced to engage in a partial redemption or to delay a required redemption. If such a partial redemption or delay were to occur, the market price of the Term Preferred Stock might be adversely affected.

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.

None.

We do not own any real estate or other physical properties material to our operations. The Adviser is the current leaseholder of all properties in which we operate. We occupy these premises pursuant to our Advisory and Administration Agreements with the Adviser and Administrator, respectively. The Adviser and Administrator are both headquartered in McLean, Virginia, a suburb of Washington, D.C., and the Adviser also has offices in several other states.

We are not currently subject to any material legal proceedings, nor, to our knowledge, is any material legal proceeding threatened against us.

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ITEM 4. MINE SAFETY DISCLOSURES

Not applicable.

PART II

ITEM 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Our common stock is traded on the NASDAQ Global Select Market (“NASDAQ”) under the symbol “GLAD.” The following table reflects, by quarter, the high and low sales prices per share of our common stock on the NASDAQ, the high and low sales prices as a percentage of net asset value (“NAV”) per common share and quarterly distributions declared per share for each fiscal quarter during the last two fiscal years. Amounts presented for each fiscal quarter of 2012 and 2011 represent the cumulative amount of the distributions declared per common share for the months composing such quarter.

As of November 8, 2012, there were approximately 57 record owners of our common stock. This number does not include stockholders for whom shares are held in “street name.”

Distributions

We currently intend to distribute in the form of cash distributions a minimum of 90% of our ordinary income and short-term capital gains, if any, on a quarterly basis to our stockholders in the form of monthly distributions. We intend to retain some or all of our long-term capital gains, but to designate the retained amount as a deemed distribution, after giving effect to any prior year realized losses that are carried forward, to supplement our equity capital and support the growth of our portfolio. However, in certain cases, our Board of Directors may choose to distribute our net realized long-term capital gains by paying a one-time special distribution. Additionally, our Credit Facility contains a covenant that limits payments of distributions to our aggregate net investment income for each of the twelve month periods ending September 30, 2012, 2013, 2014 and 2015.

Recent Sales of Unregistered Securities and Purchases of Equity Securities

We did not sell any unregistered shares of stock or repurchase any shares of our stock during the fiscal year ended September 30, 2012.

ITEM 6. SELECTED FINANCIAL DATA

The following consolidated selected financial data for the fiscal years ended September 30, 2012, 2011, 2010, 2009 and 2008 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 report.

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GLADSTONE CAPITAL CORPORATION

CONSOLIDATED SELECTED FINANCIAL AND OTHER DATA

(DOLLAR AMOUNTS IN THOUSANDS, EXCEPT PER SHARE AND PER UNIT DATA)

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ITEM 7. 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 financial statements and the notes thereto contained elsewhere in this Form 10-K. Except per share amounts, dollar amounts are in thousands unless otherwise indicated.

OVERVIEW

General

We were incorporated under the Maryland General Corporation Laws on May 30, 2001. Our Board of Directors approved revisions to our investment objectives (as noted below) and strategies, effective on or about January 1, 2013. See “Recent Developments — Board of Director Actions” for more information. 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.

We operate as a 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 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”).

Business Environment

While economic conditions generally appear to be improving, we remain cautious about a long-term economic recovery. The recent recession in general, and the disruptions in the capital markets in particular, have impacted our liquidity options and increased our cost of debt and equity capital. Many of our portfolio companies, as well as those that we evaluate for investment, are impacted by these economic conditions, and if these conditions persist, it may affect their ability to repay our loans or engage in a liquidity event, such as a sale, recapitalization or initial public offering. The 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, which could cause the number of our non-performing assets to increase and the fair market value of our portfolio to decrease. We do not know if market conditions will continue to improve or if adverse conditions will again intensify, and we do not know the full extent to which the economic downturn will affect us. If market instability persists or intensifies, we may experience difficulty in raising capital.

During 2012, we experienced a net contraction in our overall portfolio, a net decrease of nine portfolio companies when compared to the year ending 2011. The primary reason was due to $60.2 million in unscheduled principal payments with ten portfolio investments paying off early, but also due to fewer new investments being made during the year. While we invested in several new proprietary and syndicate investments in 2012, there is increased competitive pressure in the BDC and investment company marketplace for senior and senior subordinated debt resulting in lower yields for increasingly riskier investments. Going into 2013, we will continue to focus on building our pipeline and making investments that meet our objectives and strategies and that provide appropriate returns given the risks. Subsequent to September 30, 2012, we have made one new investment for an aggregate total of $2.5 million.

Despite the challenges during these uncertain economic times, during the year ended September 30, 2012, we completed both a preferred stock offering and a renewal of our $137.0 million line of credit (our “Credit Facility,” described more fully under “Recent Developments — Renewal of Credit Facility” below). In November 2011, we issued 1.5 million shares of term preferred stock (our “Term Preferred Stock,” defined under “Recent Developments — Term Preferred Stock Offering” below) for gross proceeds of $38.5 million and in January 2012, we closed on an amendment on our Credit Facility to extend its maturity until January 2015.

In addition, in July 2012, the Securities and Exchange Commission (“SEC”) granted an exemptive order that, subject to satisfaction of certain conditions, expands our ability to co-invest in portfolio companies with certain of our affiliated investment funds, which we believe this will enhance our ability to further our investment strategy and objectives. See “Recent Developments — Co-Investment Order” for more information.

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We believe that market conditions have affected the trading price of our common stock and our ability to finance new investments through the issuance of equity. On November 9, 2012, the closing market price of our common stock was $8.47, a 5.7% discount to our September 30, 2012, net asset value (“NAV”) per share of $8.98. When our stock trades below NAV per common share, as it has consistently traded over the last three 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 stockholder approval, other than through sales to our then-existing stockholders pursuant to a rights offering. At our annual meeting of stockholders held on February 16, 2012, 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% 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 makes certain determinations prior to any such sale. At the upcoming annual stockholders meeting scheduled for February 14, 2013, our stockholders will again be asked to vote in favor of renewing this proposal for another year.

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 maintain our qualification as a RIC, we must satisfy, among other requirements, an annual distribution requirement to pay out at least 90% of our ordinary income and short-term capital gains to our stockholders. Because we are required to distribute our income in this manner, 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 that require us to have an asset coverage ratio (as defined in Section 18(h) of the 1940 Act) of at least 200% on senior securities representing indebtedness and senior securities that are stock, which we refer to collectively as “Senior Securities.”

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 public offering of Term Preferred Stock in November 2011, our three year renewal on our Credit Facility and our new ability to co-invest with Gladstone Investment Corporation (“Gladstone Investment”) and other affiliated investment funds, will increase our ability to make investments in businesses that we believe will weather the current economic conditions and will be likely to produce attractive long-term returns for our stockholders.

Investment Highlights

During the fiscal year ended September 30, 2012, we extended $45.1 million in new debt and equity investments to five new portfolio companies, and we extended $23.8 million of investments to existing portfolio companies through revolver draws, additions to term notes and equity. Also, during the fiscal year ended September 30, 2012, we sold our investments in five portfolio companies for aggregate proceeds of approximately $6.5 million and we received scheduled and unscheduled contractual principal repayments of approximately $67.4 million from existing portfolio companies, including ten early payoffs at par. Since our initial public offering in August 2001, we have made 316 different loans to, or investments in, 158 companies for a total of approximately $1.1 billion, before giving effect to principal repayments on investments and divestitures.

Investment Activity

During the fiscal year ended September 30, 2012, we executed the following transactions with certain of our portfolio companies:

Purchases

During the year ended September 30, 2012, we extended an aggregate of $28.0 million in debt and equity investments to two new proprietary portfolio companies, an aggregate of $15.5 million in senior or senior subordinated syndicated loan investments to two new portfolio companies, Blue Coat Systems, Inc. (“Blue Coat”) and PLATO Learning, Inc., and $1.6 million to Ohana Media Group (“Ohana”), which is a proprietary investment that resulted from a restructuring discussed below.

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Repayments and Exits

During the year ended September 30, 2012, 34 borrowers made principal repayments totaling $67.4 million in the aggregate, consisting of $60.2 million in unscheduled payoffs and exits, as well as $7.2 million in contractual amortization, revolver repayments and principal payments.

Workouts