EX-2.s.10

Filed Pursuant to Rule 497
Registration Statement No.

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

Exhibit 2.s.10

PROSPECTUS SUPPLEMENT

(To Prospectus dated , 201 )

Rights for Shares

LOGO

Subscription Rights for % Series [ ] Preferred Stock

Gladstone Capital Corporation, referred to as we, us, our or the Company, is issuing subscription rights, or Rights, to our common stockholders to purchase shares of % Series [ ] Preferred Stock, referred to as the Series [ ] Preferred Stock.

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

Our common stock is traded on The Nasdaq Global Select Market under the symbol “GLAD.” The last reported sale price for our common stock on , was $ per share. The net asset value of our common shares at the close of business on , 201 was $ per share. There currently is no market for the Series [ ] Preferred Stock. We applied to list the Series [ ] Preferred Stock on [ ]. The expected trading symbol for the Series [ ] Preferred Stock is [ ].

You should read this prospectus supplement and the accompanying prospectus before deciding whether to invest in our Rights and you should retain them for future reference. Additional information about us, including our annual, quarterly and current reports, has been filed with the Securities and Exchange Commission. This information is available free of charge on our corporate website at www.gladstonecapital.com.

Investing in preferred stock through Rights involves certain risks that are described in the “Risk Factors” section beginning on page PR-7 of this prospectus supplement and page 13 of the accompanying prospectus.

The Rights being offered have not been approved or disapproved by the Securities and Exchange Commission or any state securities commission nor has the Securities and Exchange Commission or any state securities commission passed upon the accuracy or adequacy of this prospectus. Any representation to the contrary is a criminal offense.


	Per Share	Total
Subscription price of Preferred Stock to shareholders exercising Rights	$	$
Underwriting discounts and commissions	$	$
Proceeds, before expenses, to us⁽¹⁾	$	$

(1) The

aggregate expenses of the offering are estimated to be $[ ].

The preferred stock is expected to be ready for delivery in book-entry form through the Depository Trust Company on or about , 201 . If the offer is extended, the preferred stock is expected to be ready for delivery in book-entry form through the Depository Trust Company on or about , 201 .

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

TABLE OF CONTENTS

Prospectus Supplement


	Page
Summary of the Terms of the Rights Offering		PR-5
Terms of the Series [ ] Preferred Stock		PR-6
Description of the Rights Offering		PR-6
Risk Factors		PR-7
Use of Proceeds		PR-7
Capitalization		PR-7
Ratio of Earnings to Combined Fixed Charges and Mandatorily Redeemable Preferred Distributions		PR-7
Taxation		PR-7
Underwriting		PR-7
Legal Matters		PR-7

Prospectus


	Page
Prospectus Summary		1
The Offering		5
Fees and Expenses		8
Additional Information		12
Risk Factors		13
Special Note Regarding Forward-Looking Statements		39
Use of Proceeds		40
Price Range of Common Stock and Distributions		40
Common Share Price Data		41
Ratio of Earnings to Combined Fixed Charges and Mandatorily Redeemable Preferred Distributions		42
Consolidated Selected Financial Data		43
Selected Quarterly Data (unaudited)		45
Management’s Discussion and Analysis of Financial Condition and Results of Operations		46
Senior Securities		72
Business		74
Portfolio Companies		91
Management		99
Control Persons and Principal Stockholders		115
Dividend Reinvestment Plan		118
Material U.S. Federal Income Tax Considerations		120
Regulation as a Business Development Company		123
Description of Our Securities		126
Certain Provisions of Maryland Law and of Our Charter and Bylaws		133
Share Repurchases		137
Plan of Distribution		138

PR-2

SPECIAL NOTE REGARDING FORWARD-LOOKING STATEMENTS

All statements contained or incorporated by reference in this prospectus supplement or the accompanying prospectus, other than historical facts, may constitute “forward-looking statements.” These statements may relate to, among other things, future events or our future operating results, our business prospects and the prospects of our portfolio companies, actual and potential conflicts of interest with Gladstone Management Corporation and its affiliates, the use of borrowed money to finance our investments, the adequacy of our financing sources and working capital, and our ability to co-invest, among other factors. In some cases, you can identify forward-looking statements by terminology such as “estimate,” “may,” “might,” “believe,” “will,” “provided,” “anticipate,” “future,” “could,” “growth,” “plan,” “project,” “intend,” “expect,” “should,” “would,” “if,” “seek,” “possible,” “potential,” “likely” or the negative or other variations 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 but are not limited to:

•

the recurrence of adverse changes in the economy and the capital markets;

•

risks associated with negotiation and consummation of pending and future transactions;

•

the loss of one or more of our executive officers, in particular David Gladstone, Robert L. Marcotte or Terry Lee Brubaker;

•

changes in our investment objectives and strategy;

•

availability, terms (including the possibility of interest rate volatility) and deployment of capital;

•

changes in our industry, interest rates, exchange rates, regulation or the general economy;

•

our business prospects and the prospects of our portfolio companies;

•

the degree and nature of our competition;

•

changes in governmental regulations, tax rates and similar matters;

•

our ability to exit an investment in a timely manner;

•

our ability to maintain our qualification as a RIC and as a BDC; and

•

those factors described in the “Risk Factors” section of this prospectus supplement and the accompanying prospectus.

We caution readers not to place undue reliance on any such forward-looking statement, which speak only as of the date made. Actual results could differ materially from those anticipated in our forward-looking statements and future results could differ materially from our historical performance. Except as required by law, we undertake no obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, after the date of this prospectus supplement. Although we undertake no obligation to revise or update any forward-looking statements, whether as a result of new information, future events, or otherwise, you are advised to consult any additional disclosures that we may make directly to you or through reports we have filed, or in the future may file with the SEC, including subsequent annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K. The forward-looking statements contained or incorporated by reference in this prospectus supplement or accompanying prospectus are excluded from the safe harbor protection provided by the Private Securities Litigation Reform Act of 1995 and Section 27A of the Securities Act of 1933, as amended (the “Securities Act”).

PR-4

SUMMARY OF THE TERMS OF THE RIGHTS OFFERING

Terms of the Offer

[To be provided.]

Amount Available for Primary Subscription

$[ ]

Title

Subscription Rights for Series [ ] preferred stock

Exercise Price

Rights may be exercised at a price of $ per share of common stock (the “Subscription Price”). See “Description of the Rights Offering.”

Record Date

Rights will be issued to holders of record of the Company’s common stock on , 201 (the “Record Date”). See “Description of the Rights Offering.”

Number of Rights Issued

Rights will be issued in respect of each share of preferred stock of the Company outstanding on the Record Date. See “Description of the Rights Offering.”

Number of Rights Required to Purchase One Preferred Share

A holder of Rights may purchase share of common stock of the Company for every Rights exercised. The number of Rights to be issued to a stockholder on the Record Date will be rounded up to the nearest number of Rights evenly divisible by . See “Description of the Rights Offering.”

Over-Subscription Privilege

[To be provided.]

Transfer of Rights

[To be provided.]

Exercise Period

The Rights may be exercised at any time after issuance and prior to expiration of the Rights, which will be 5:00 PM Eastern Time on , 201 (the “Expiration Date”) (the “Subscription Period”). See “Description of the Rights Offering.”

Offer Expenses

The expenses of the Offer are expected to be approximately $[ ]. See “Use of Proceeds.”

Sale of Rights

[To be provided.]

Use of Proceeds

The Company estimates the net proceeds of the Offer to be approximately $[ ]. This figure is based on the Exercise Price per share of $ and assumes all new shares of Series [ ] preferred stock offered are sold and that the expenses related to the Offer estimated at approximately $[ ] are paid.

The Company intends to use the net proceeds from this offering first to pay down existing short-term debt, then to make investments in lower middle market businesses in accordance with our investment objectives, with any remaining proceeds to be used for other general corporate purposes. We anticipate that substantially all of the net

PR-5

proceeds of this offering will be utilized in the manner described above within three months of the completion of the offering. Pending such utilization, we intend to invest the net proceeds of this offering primarily in cash, cash equivalents, U.S. government securities, and other high-quality debt investments that mature in one year or less from the date of investment, consistent with the requirements for continued qualification as a RIC for federal income tax purposes. See “Use of Proceeds.”

Rights Agent

[To be provided.]

TERMS OF THE SERIES [ ] PREFERRED STOCK

Dividend Rate

The dividend rate will be %.

Dividend Payment Rate

[Dividends will be paid when, as and if declared on , , , and , commencing .] The payment date for the initial dividend period will be .]

Regular Dividend Period

Regular dividend periods will be days.

Liquidation Preference

$ per share

Non-Call Period

The shares may not be called for redemption at the option of the Company prior to .

Stock Exchange Listing

DESCRIPTION OF THE RIGHTS OFFERING

[To be provided.]

PR-6

RISK FACTORS

[To be provided.]

USE OF PROCEEDS

We intend to use the net proceeds from this offering first to pay down existing short-term debt, then to make investments in lower middle market businesses in accordance with our investment objectives, with any remaining proceeds to be used for other general corporate purposes. Indebtedness under our credit line facility currently accrues interest at the rate of approximately [ ]% and matures on , . We anticipate that substantially all of the net proceeds of this offering will be utilized in the manner described above within three months of the completion of the offering. Pending such utilization, we intend to invest the net proceeds of this offering primarily in cash, cash equivalents, U.S. government securities, and other high-quality debt investments that mature in one year or less from the date of investment, consistent with the requirements for continued qualification as a RIC for federal income tax purposes.

CAPITALIZATION

[To be provided.]

ASSET COVERAGE RATIO

[To be provided.]

TAXATION

[To be provided.]

UNDERWRITING

[To be provided.]

LEGAL MATTERS

Certain legal matters will be passed upon for us by Bass, Berry & Sims PLC, Nashville, Tennessee. Venable LLP, Baltimore, Maryland, will pass upon the legality of certain of the securities offered by us and certain other matters of Maryland law. [Certain legal matters will be passed upon for the underwriters by .]

PR-7

LOGO

Gladstone Capital Corporation

Shares of % Series [ ] Preferred Stock

Issuable Upon Exercise of Rights to

Subscribe for Such Shares of Preferred Stock

PROSPECTUS SUPPLEMENT

, 201


	Page
Custodian, Transfer and Dividend Paying Agent and Registrar		140
Brokerage Allocation and Other Practices		141
Proxy Voting Policies and Procedures		142
Legal Matters		143
Experts		143
Financial Statements		F-1