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The Gabelli Convertible & Income Securities Fund Inc. 2026-03-31 Investment Objective (Unaudited) The Gabelli Convertible and Income Securities Fund is a diversified, closed-end management investment company whose primary investment objective is to seek a high level of total return through a combination of current income and capital appreciation. 607500 20147486 20147486

4.14

20147486

4.14

33760000 338000

100.00

100.00 453.99 6400000 15000000 15000000 640000 1500000 1500000

10.00

10.00 10.00 10.00 125.49 59.66 63.50 6075000 6075000 608000 608000

10.00

10.00 10.00 147.32 153.32 7. Capital. The charter permits the Fund to issue 998,000,000 shares of common stock (par value $0.001). The Board has authorized the repurchase of up to 500,000 shares of common stock on the open market when the shares are trading at a discount of 10% or more (or such other percentage as the Board may determine from time to time) from the NAV of the shares. During the six months ended March 31, 2026 and the fiscal year ended September 30, 2025, the Fund did not repurchase any shares of its common stock in the open market. For the six months ended March 31, 2026 and the fiscal year ended September 30, 2025, transactions in common stock were as follows: <table cellpadding="0" cellspacing="0" style="font: 8pt Arial, Helvetica, Sans-Serif; border-collapse: collapse; width: 100%"> <tr style="font-size: 8pt; vertical-align: bottom"> <td style="vertical-align: top; text-indent: -0.125in; padding-left: 0.125in; font-size: 8pt; padding-bottom: 1pt; text-align: left"> </td> <td style="font-size: 8pt; padding-bottom: 1pt; font-weight: bold"> </td> <td colspan="6" style="border-bottom: Black 1pt solid; font-size: 8pt; font-weight: bold; text-align: center">Six Months Ended March 31, 2026 (Unaudited)</td> <td style="font-size: 8pt; padding-bottom: 1pt"> </td> <td style="font-size: 8pt; padding-bottom: 1pt"> </td> <td colspan="6" style="border-bottom: Black 1pt solid; font-size: 8pt; text-align: center">Year Ended September 30, 2025</td> <td style="font-size: 8pt; padding-bottom: 1pt"> </td></tr> <tr style="font-size: 8pt; vertical-align: bottom"> <td style="vertical-align: top; text-indent: -0.125in; padding-left: 0.125in; font-size: 8pt; text-align: left"> </td> <td style="font-size: 8pt; font-weight: bold; padding-bottom: 1pt"> </td> <td colspan="2" style="border-bottom: Black 1pt solid; font-size: 8pt; font-weight: bold; text-align: center">Shares</td> <td style="font-size: 8pt; padding-bottom: 1pt; font-weight: bold"> </td> <td style="font-size: 8pt; font-weight: bold; padding-bottom: 1pt"> </td> <td colspan="2" style="border-bottom: Black 1pt solid; font-size: 8pt; font-weight: bold; text-align: center">Amount</td> <td style="font-size: 8pt; padding-bottom: 1pt; font-weight: bold"> </td> <td style="font-size: 8pt; font-weight: bold; padding-bottom: 1pt"> </td> <td colspan="2" style="border-bottom: Black 1pt solid; font-size: 8pt; font-weight: bold; text-align: center">Shares</td> <td style="font-size: 8pt; padding-bottom: 1pt; font-weight: bold"> </td> <td style="font-size: 8pt; font-weight: bold; padding-bottom: 1pt"> </td> <td colspan="2" style="border-bottom: Black 1pt solid; font-size: 8pt; font-weight: bold; text-align: center">Amount</td> <td style="font-size: 8pt; padding-bottom: 1pt; font-weight: bold"> </td></tr> <tr style="font-size: 8pt; vertical-align: bottom; background-color: rgb(204,238,255)"> <td style="vertical-align: top; text-indent: -0.125in; padding-left: 0.125in; font-size: 8pt; width: 52%; text-align: left">Net increase in net assets from common shares issued upon reinvestment of distributions</td> <td style="font-size: 8pt; width: 1%"> </td> <td style="font-size: 8pt; width: 1%; text-align: left"> </td> <td style="font-size: 8pt; width: 9%; text-align: right">120,625</td> <td style="font-size: 8pt; width: 1%; text-align: left"> </td> <td style="font-size: 8pt; width: 1%"> </td> <td style="font-size: 8pt; width: 1%; text-align: left">$</td> <td style="font-size: 8pt; width: 9%; text-align: right">507,473</td> <td style="font-size: 8pt; width: 1%; text-align: left"> </td> <td style="font-size: 8pt; width: 1%"> </td> <td style="font-size: 8pt; width: 1%; text-align: left"> </td> <td style="font-size: 8pt; width: 9%; text-align: right">330,172</td> <td style="font-size: 8pt; width: 1%; text-align: left"> </td> <td style="font-size: 8pt; width: 1%"> </td> <td style="font-size: 8pt; width: 1%; text-align: left">$</td> <td style="font-size: 8pt; width: 9%; text-align: right">1,248,918</td> <td style="font-size: 8pt; width: 1%; text-align: left"> </td></tr> </table> As of March 31, 2026, the Fund had an effective shelf registration available through September 30, 2027, which authorizes issuance of $125 million in common or preferred shares. <p id="xdx_842_ecef--PreferredStockRestrictionsOtherTextBlock_hus-gaap--StatementClassOfStockAxis__custom--CumulativePreferredSharesMember_dU_zZf7YCnRlgT5" style="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">The Fund’s Articles of Incorporation authorize the issuance of up to 1,995,000 shares of $0.001 par value Preferred Stock. The Preferred Stock is senior to the common stock and results in the financial leveraging of the common stock. Such leveraging tends to magnify both the risks and opportunities to common stockholders. Dividends on shares of the Preferred Stock are cumulative. The Fund is required by the 1940 Act and by the Fund’s Articles Supplementary to meet certain asset coverage tests with respect to the Preferred Stock. If the Fund fails to meet these requirements and does not correct such failure, the Fund may be required to redeem, in part or in full, the Series G Preferred at the redemption price of $10 per share plus an amount equal to the accumulated and unpaid dividends whether or not declared on such shares in order to meet these requirements. Additionally, failure to meet the foregoing asset coverage requirements could restrict the Fund’s ability to pay dividends to common stockholders and could lead to sales of portfolio securities at inopportune times. The income received on the Fund’s assets may vary in a manner unrelated to the fixed and variable rates, which could have either a beneficial or detrimental impact on net investment income and gains available to common stockholders. On December 29, 2022, the Fund issued 1,500,000 shares of Series G 5.20% Cumulative Preferred Stock, receiving $14,898,306 after the deduction of offering expenses of $101,694. The Series G Preferred has a liquidation value of $10 per share and an annual dividend rate of 5.20%. On December 26, 2023, 860,000 shares of Series G Preferred were put back to the Fund at their liquidation preference of $10 per share. On June 26, 2025, the Fund redeemed all outstanding Series G Preferred at the liquidation preference of $10 per share. On June 26, 2025, the Fund issued 607,500 shares of Series H 5.20% Cumulative Preferred Stock (Series H Preferred), receiving $6,075,000 after deduction of estimated offering expenses. The Series H Preferred has a liquidation value of $10 per share and an annual dividend rate of 5.20%. The Series H Preferred are subject to mandatory redemption on September 26, 2027. The Series H Preferred are not subject to optional redemption unless such redemption is necessary, in the judgment of the Board, to maintain the Fund’s status as a regulated investment company under Subchapter M of the Internal Revenue Code of 1986, as amended. The Fund will also redeem all or any part of the outstanding Series H Preferred that holders have properly tendered for redemption during each sixty day period prior to June 26, 2026, and March 26, 2027, at the liquidation preference, plus any accumulated and unpaid dividends. <p id="xdx_843_ecef--SecurityVotingRightsTextBlock_hus-gaap--StatementClassOfStockAxis__custom--CumulativePreferredSharesMember_dU_z0AroRTcozrh" style="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">The holders of preferred stock generally are entitled to one vote per share held on each matter submitted to a vote of stockholders of the Fund and will vote together with holders of common stock as a single class. The holders of Series H Preferred voting together as a single class also have the right currently to elect two Directors and, under certain circumstances, are entitled to elect a majority of the Board. In addition, the affirmative vote of a majority of the votes entitled to be cast by holders of all outstanding shares of the preferred stock, voting as a single class, will be required to approve any plan of reorganization adversely affecting the preferred stock, and the approval of two-thirds of each class, voting separately, of the Fund’s outstanding voting stock must approve the conversion of the Fund from a closed-end to an open-end investment company. The approval of a majority (as defined in the 1940 Act) of the outstanding preferred stock and a majority (as defined in the 1940 Act) of the Fund’s outstanding voting securities are required to approve certain other actions, including changes in the Fund’s investment objectives or fundamental investment policies. <p id="xdx_842_ecef--PreferredStockRestrictionsOtherTextBlock_hus-gaap--StatementClassOfStockAxis__custom--CumulativePreferredSharesMember_dU_zZf7YCnRlgT5" style="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">The Fund’s Articles of Incorporation authorize the issuance of up to 1,995,000 shares of $0.001 par value Preferred Stock. The Preferred Stock is senior to the common stock and results in the financial leveraging of the common stock. Such leveraging tends to magnify both the risks and opportunities to common stockholders. Dividends on shares of the Preferred Stock are cumulative. The Fund is required by the 1940 Act and by the Fund’s Articles Supplementary to meet certain asset coverage tests with respect to the Preferred Stock. If the Fund fails to meet these requirements and does not correct such failure, the Fund may be required to redeem, in part or in full, the Series G Preferred at the redemption price of $10 per share plus an amount equal to the accumulated and unpaid dividends whether or not declared on such shares in order to meet these requirements. Additionally, failure to meet the foregoing asset coverage requirements could restrict the Fund’s ability to pay dividends to common stockholders and could lead to sales of portfolio securities at inopportune times. The income received on the Fund’s assets may vary in a manner unrelated to the fixed and variable rates, which could have either a beneficial or detrimental impact on net investment income and gains available to common stockholders. On December 29, 2022, the Fund issued 1,500,000 shares of Series G 5.20% Cumulative Preferred Stock, receiving $14,898,306 after the deduction of offering expenses of $101,694. The Series G Preferred has a liquidation value of $10 per share and an annual dividend rate of 5.20%. On December 26, 2023, 860,000 shares of Series G Preferred were put back to the Fund at their liquidation preference of $10 per share. On June 26, 2025, the Fund redeemed all outstanding Series G Preferred at the liquidation preference of $10 per share. On June 26, 2025, the Fund issued 607,500 shares of Series H 5.20% Cumulative Preferred Stock (Series H Preferred), receiving $6,075,000 after deduction of estimated offering expenses. The Series H Preferred has a liquidation value of $10 per share and an annual dividend rate of 5.20%. The Series H Preferred are subject to mandatory redemption on September 26, 2027. The Series H Preferred are not subject to optional redemption unless such redemption is necessary, in the judgment of the Board, to maintain the Fund’s status as a regulated investment company under Subchapter M of the Internal Revenue Code of 1986, as amended. The Fund will also redeem all or any part of the outstanding Series H Preferred that holders have properly tendered for redemption during each sixty day period prior to June 26, 2026, and March 26, 2027, at the liquidation preference, plus any accumulated and unpaid dividends. <p id="xdx_843_ecef--SecurityVotingRightsTextBlock_hus-gaap--StatementClassOfStockAxis__custom--CumulativePreferredSharesMember_dU_z0AroRTcozrh" style="font: 10pt Arial, Helvetica, Sans-Serif; margin: 0; text-align: justify">The holders of preferred stock generally are entitled to one vote per share held on each matter submitted to a vote of stockholders of the Fund and will vote together with holders of common stock as a single class. The holders of Series H Preferred voting together as a single class also have the right currently to elect two Directors and, under certain circumstances, are entitled to elect a majority of the Board. In addition, the affirmative vote of a majority of the votes entitled to be cast by holders of all outstanding shares of the preferred stock, voting as a single class, will be required to approve any plan of reorganization adversely affecting the preferred stock, and the approval of two-thirds of each class, voting separately, of the Fund’s outstanding voting stock must approve the conversion of the Fund from a closed-end to an open-end investment company. The approval of a majority (as defined in the 1940 Act) of the outstanding preferred stock and a majority (as defined in the 1940 Act) of the Fund’s outstanding voting securities are required to approve certain other actions, including changes in the Fund’s investment objectives or fundamental investment policies. Based on weekly prices. The Series E Preferred was a private placement and was not listed on an exchange. The average market price shown was the $100 liquidation preference of the Series E Preferred. The Series G Preferred was a private placement and was not listed on an exchange. The average market price shown was the $10 liquidation preference of the Series G Preferred. The Series H Preferred is a private placement and is not listed on an exchange. The average market price shown is the $10 liquidation preference of the Series H Preferred.