Exhibit (s)(iv)

Filed Pursuant to Rule 424(b)(2)            

Registration Statement No. 333-            

PROSPECTUS SUPPLEMENT

(To Prospectus dated                 , 2021)

The Gabelli Convertible and Income Securities Fund Inc.

Notes [Specify Title]

We are offering for sale                 promissory notes. Our common stock are listed on the New York Stock Exchange (the “NYSE”) under the symbol “GCV”. On                 , the last reported sale price of our common stock was $                 .

	Per Note	Total (1)
Public offering price	$	$
Underwriting discounts and commissions	$	$
Proceeds, before expenses, to us	$	$

(1) The aggregate expenses of the offering are estimated to be $                , which represents approximately $                per note.

The notes will be ready for delivery on or about                 ,                 .

You should read this Prospectus Supplement and the accompanying Prospectus before deciding whether to invest in our notes and retain it for future reference. The Prospectus Supplement and the accompanying Prospectus contain important information about us. Material that has been incorporated by reference and other information about us can be obtained from us by calling 800-GABELLI (422-3554) or from the Securities and Exchange Commission’s (“SEC”) website (http://www.sec.gov).

Neither the SEC nor any state securities commission has approved or disapproved these securities or determined if this Prospectus Supplement is truthful or complete. Any representation to the contrary is a criminal offense.

            ,                 

You should rely only on the information contained or incorporated by reference in this Prospectus Supplement and the accompanying Prospectus. We have not authorized any other person to provide you with different information. If anyone provides you with different or inconsistent information, you should not rely on it. We are not making an offer to sell these securities in any jurisdiction in which the offer or sale is not permitted.

In this Prospectus Supplement and in the accompanying Prospectus, unless otherwise indicated, “Fund,” “us,” “our” and “we” refer to The Gabelli Convertible and Income Securities Fund Inc. This Prospectus Supplement also includes trademarks owned by other persons.

TABLE OF CONTENTS

Prospectus Supplement

	Page
TERMS OF THE NOTES		R-3
USE OF PROCEEDS		R-3
CAPITALIZATION		R-3
ASSET COVERAGE RATIO		R-3
SPECIAL CHARACTERISTICS AND RISKS OF THE NOTES		R-4
TAXATION		R-4
UNDERWRITING		R-4
LEGAL MATTERS		R-4

TERMS OF THE NOTES

Principal Amount	The principal amount of the notes is $         in the aggregate.
Maturity	The principal amount of the notes will become due and payable on         ,     .
Interest Rate	The interest rate will be     %.
Frequency of payment	Interest will be paid commencing .
Prepayment Protections
[Stock Exchange Listing]
Rating	It is a condition of issuance that the notes be rated by .

USE OF PROCEEDS

We estimate the total net proceeds of the offering to be $                , based on the public offering price of $                 per note and after deduction of the underwriting discounts and commissions and estimated offering expenses payable by us.

The Investment Adviser expects that it will initially invest the proceeds of the offering in high quality short term debt securities and instruments. The Investment Adviser anticipates that the investment of the proceeds will be made in accordance with the Fund’s investment objective and policies as appropriate investment opportunities are identified, which is expected to substantially be completed within three months; however, changes in market conditions could result in the Fund’s anticipated investment period extending to as long as six months. This could occur if market conditions are unstable to such an extent that the Investment Adviser believes market risk is greater than the benefit of making additional investments at that time. Depending on market conditions and operations, a portion of the cash held by the Fund, including any proceeds raised from the offering to be identified in any relevant Prospectus Supplement, may be used to pay distributions in accordance with the Fund’s distribution policy. Such distribution may include a return of capital and should not be considered as dividend yield or the total return from an investment in the Fund. See “Use of Proceeds” in the Prospectus.

The Fund may use the net proceeds from the offering to redeem shares of its Series E Preferred. As set forth under the Fund’s Articles Supplementary for the Series E Preferred Shares (the “Articles Supplementary”), during the period from October 12, 2020 to October 11, 2021 (the “Put Period”), the Fund will accept for redemption, in aggregate, up to 20% of the outstanding shares of the Series E Preferred, determined as of the first day of the Put Period.

CAPITALIZATION

[To be provided.]

ASSET COVERAGE RATIO

As provided in the 1940 Act and subject to certain exceptions, the Fund may issue debt and/or preferred shares with the condition that immediately after issuance the value of its total assets, less certain ordinary course liabilities, exceed 300% of the amount of the debt outstanding and exceed 200% of the sum of the amount of debt and preferred shares outstanding. The Fund’s notes are expected to have an initial asset coverage on the date of issuance of approximately     %.

R-3

SPECIAL CHARACTERISTICS AND RISKS OF THE NOTES

Liquidity Risk. An investment in our notes is subject to special risks. Our notes are not likely to be listed on an exchange or automated quotation system. We cannot assure you that any market will exist for our notes or if a market does exist, whether it will provide holders with liquidity. Broker-dealers that maintain a secondary trading market for the notes are not required to maintain this market, and the Fund is not required to redeem notes if an attempted secondary market sale fails because of a lack of buyers. To the extent that our notes trade, they may trade at a price either higher or lower than their principal amount depending on interest rates, the rating (if any) on such notes and other factors.

Reinvestment Risk. The Fund may at any time redeem notes to the extent necessary to meet regulatory asset coverage requirements. For example, if the value of the Fund’s investment portfolio declines, thereby reducing the asset coverage for the notes, the Fund may be obligated under the terms of the notes to redeem the notes. Investors may not be able to reinvest the proceeds of any redemption in an investment providing the same or a better rate than that of the notes.

Distribution Risk. The Fund may not meet the asset coverage requirements or earn sufficient income from its investments to make interest payments on the notes.

Redemption Risk. Although unlikely, precipitous declines in the value of the Fund’s assets could result in the Fund having insufficient assets to redeem all of the notes for the full redemption price.

TAXATION

[To be provided.]

UNDERWRITING

[To be provided.]

LEGAL MATTERS

Certain legal matters will be passed on by Skadden, Arps, Slate, Meagher & Flom LLP, Boston, Massachusetts and Venable LLP, Baltimore, Maryland in connection with the offering of the securities.

R-4

The Gabelli Convertible and Income Securities Fund Inc.

Notes

PROSPECTUS SUPPLEMENT

            , 2021