0000099614 2026-11-13 2026-11-13 0000099614 tcc:InvestingInOtherFundsRiskMember 2026-11-13 2026-11-13 0000099614 tcc:TotalAnnualExpensesBeforeImpactOfDividendsOnPreferredStockMember 2026-11-13 2026-11-13 0000099614 tcc:TotalAnnualFundOperatingExpensesIncludingImpactOfDividendsOnPreferredStockMember 2026-11-13 2026-11-13 0000099614 tcc:UnlistedClosed-EndIntervalFundIlliquidityRisksMember 2026-11-13 2026-11-13 iso4217:USD pure false 424B3 0000099614 TRI-CONTINENTAL CORPORATION <table cellpadding="0" cellspacing="0" style="empty-cells: show; width: 516pt;"> <tr style="height: 13.5pt;"> <td colspan="2" style="background-color: #003c78; border-bottom: 2pt solid #FFFFFF; padding-bottom: 2.75pt; padding-top: 2.75pt; vertical-align: Bottom; width: 516.00pt;"> <div style="line-height: 10pt; text-align: left;"> <div style="margin-left: 6pt; margin-right: 10pt; margin-top: 1pt; text-align: left; white-space: nowrap;"><span style="color: #ffffff; font-family: arial; font-size: 8pt; font-weight: bold; margin-left: 0.0pt;">Annual Expenses (as a percentage of net assets attributable to common shares)</span></div> </div> </td> </tr> <tr style="height: 14pt;"> <td style="background-color: #d9e5f1; border-bottom: 2pt solid #FFFFFF; padding-bottom: 2.75pt; padding-top: 2.75pt; vertical-align: Bottom; width: 479.71pt;"> <div style="line-height: 10pt; text-align: left;"> <div style="margin-left: 6pt; margin-right: 6pt; text-align: left; white-space: nowrap;"><span style="color: #003c78; font-family: arial; font-size: 8pt; margin-left: 0.0pt;">Management fees</span><span style="color: #003c78; font-family: arial; font-size: 4pt; margin-left: 0.0pt; position: relative; top: -3.25pt;">(b)</span> <div style="clear: right;"> </div> </div> </div> </td> <td style="background-color: #d9e5f1; border-bottom: 2pt solid #FFFFFF; padding-bottom: 2.75pt; padding-top: 2.75pt; vertical-align: Bottom; white-space: nowrap; width: 36.29pt;"> <div style="line-height: 10pt; margin-left: 6pt; margin-right: 6pt; text-align: right; width: 18.29pt;"> <div style="display: flex; margin: auto; width: 20.29pt;"> <div style="display: flex; white-space: nowrap; width: 20.29pt;"><span style="color: #003c78; font-family: arial; font-size: 8pt; width: 20.29pt;">0.42</span></div> <div style="display: flex;"><span style="color: #003c78; font-family: arial; font-size: 8pt; width: auto;">%</span></div> </div> </div> </td> </tr> <tr style="height: 14pt;"> <td style="background-color: #d9e5f1; border-bottom: 2pt solid #FFFFFF; padding-bottom: 2.75pt; padding-top: 2.75pt; vertical-align: Bottom; width: 479.71pt;"> <div style="line-height: 10pt; text-align: left;"> <div style="margin-left: 6pt; margin-right: 6pt; text-align: left; white-space: nowrap;"><span style="color: #003c78; font-family: arial; font-size: 8pt; margin-left: 0.0pt;">Other expenses</span></div> </div> </td> <td style="background-color: #d9e5f1; border-bottom: 2pt solid #FFFFFF; padding-bottom: 2.75pt; padding-top: 2.75pt; vertical-align: Bottom; white-space: nowrap; width: 36.29pt;"> <div style="line-height: 10pt; margin-left: 6pt; margin-right: 6pt; text-align: right; width: 18.29pt;"> <div style="display: flex; margin: auto; width: 20.29pt;"> <div style="display: flex; white-space: nowrap; width: 20.29pt;"><span style="color: #003c78; font-family: arial; font-size: 8pt; width: 20.29pt;">0.04</span></div> <div style="display: flex;"><span style="color: #003c78; font-family: arial; font-size: 8pt; width: auto;">%</span></div> </div> </div> </td> </tr> <tr style="height: 14pt;"> <td style="background-color: #d9e5f1; border-bottom: 2pt solid #FFFFFF; padding-bottom: 2.75pt; padding-top: 2.75pt; vertical-align: Bottom; width: 479.71pt;"> <div style="line-height: 10pt; text-align: left;"> <div style="margin-left: 6pt; margin-right: 6pt; text-align: left; white-space: nowrap;"><span style="color: #003c78; font-family: arial; font-size: 8pt; margin-left: 0.0pt;">Acquired fund fees and expenses</span><span style="color: #003c78; font-family: arial; font-size: 4pt; margin-left: 0.0pt; position: relative; top: -3.25pt;">(c)</span> <div style="clear: right;"> </div> </div> </div> </td> <td style="background-color: #d9e5f1; border-bottom: 2pt solid #FFFFFF; padding-bottom: 2.75pt; padding-top: 2.75pt; vertical-align: Bottom; white-space: nowrap; width: 36.29pt;"> <div style="line-height: 10pt; margin-left: 6pt; margin-right: 6pt; text-align: right; width: 18.29pt;"> <div style="display: flex; margin: auto; width: 20.29pt;"> <div style="display: flex; white-space: nowrap; width: 20.29pt;"><span style="color: #003c78; font-family: arial; font-size: 8pt; width: 20.29pt;">0.15</span></div> <div style="display: flex;"><span style="color: #003c78; font-family: arial; font-size: 8pt; width: auto;">%</span></div> </div> </div> </td> </tr> <tr style="height: 14pt;"> <td style="background-color: #d9e5f1; border-bottom: 2pt solid #FFFFFF; padding-bottom: 2.75pt; padding-top: 2.75pt; vertical-align: Bottom; width: 479.71pt;"> <div style="line-height: 10pt; text-align: left;"> <div style="margin-left: 6pt; margin-right: 6pt; text-align: left; white-space: nowrap;"><span style="color: #003c78; font-family: arial; font-size: 8pt; font-weight: bold; margin-left: 0.0pt;">Total Annual Expenses Before Impact of Dividends on Preferred Stock</span><span style="color: #003c78; font-family: arial; font-size: 4pt; font-weight: bold; margin-left: 0.0pt; position: relative; top: -3.25pt;">(d)</span></div> </div> </td> <td style="background-color: #d9e5f1; border-bottom: 2pt solid #FFFFFF; padding-bottom: 2.75pt; padding-top: 2.75pt; vertical-align: Bottom; white-space: nowrap; width: 36.29pt;"> <div style="line-height: 10pt; margin-left: 6pt; margin-right: 6pt; text-align: right; width: 18.29pt;"> <div style="display: flex; margin: auto; width: 20.29pt;"> <div style="display: flex; white-space: nowrap; width: 20.29pt;"><span style="color: #003c78; font-family: arial; font-size: 8pt; width: 20.29pt;">0.61</span></div> <div style="display: flex;"><span style="color: #003c78; font-family: arial; font-size: 8pt; width: auto;">%</span></div> </div> </div> </td> </tr> <tr style="height: 14pt;"> <td style="background-color: #d9e5f1; border-bottom: 2pt solid #FFFFFF; padding-bottom: 2.75pt; padding-top: 2.75pt; vertical-align: Bottom; width: 479.71pt;"> <div style="line-height: 10pt; text-align: left;"> <div style="margin-left: 6pt; margin-right: 6pt; text-align: left; white-space: nowrap;"><span style="color: #003c78; font-family: arial; font-size: 8pt; margin-left: 0.0pt;">Impact of Dividends on Preferred Stock</span></div> </div> </td> <td style="background-color: #d9e5f1; border-bottom: 2pt solid #FFFFFF; padding-bottom: 2.75pt; padding-top: 2.75pt; vertical-align: Bottom; white-space: nowrap; width: 36.29pt;"> <div style="line-height: 10pt; margin-left: 6pt; margin-right: 6pt; text-align: right; width: 18.29pt;"> <div style="display: flex; margin: auto; width: 20.29pt;"> <div style="display: flex; white-space: nowrap; width: 20.29pt;"><span style="color: #003c78; font-family: arial; font-size: 8pt; width: 20.29pt;">0.10</span></div> <div style="display: flex;"><span style="color: #003c78; font-family: arial; font-size: 8pt; width: auto;">%</span></div> </div> </div> </td> </tr> <tr style="height: 14pt;"> <td style="background-color: #d9e5f1; border-bottom: 2pt solid #FFFFFF; padding-bottom: 2.75pt; padding-top: 2.75pt; vertical-align: Bottom; width: 479.71pt;"> <div style="line-height: 10pt; text-align: left;"> <div style="margin-left: 6pt; margin-right: 6pt; text-align: left; white-space: nowrap;"><span style="color: #003c78; font-family: arial; font-size: 8pt; font-weight: bold; margin-left: 0.0pt;">Total annual Fund operating expenses, including Impact of Dividends on Preferred Stock</span></div> </div> </td> <td style="background-color: #d9e5f1; border-bottom: 2pt solid #FFFFFF; padding-bottom: 2.75pt; padding-top: 2.75pt; vertical-align: Bottom; white-space: nowrap; width: 36.29pt;"> <div style="line-height: 10pt; margin-left: 6pt; margin-right: 6pt; text-align: right; width: 18.29pt;"> <div style="display: flex; margin: auto; width: 20.29pt;"> <div style="display: flex; white-space: nowrap; width: 20.29pt;"><span style="color: #003c78; font-family: arial; font-size: 8pt; width: 20.29pt;">0.71</span></div> <div style="display: flex;"><span style="color: #003c78; font-family: arial; font-size: 8pt; width: auto;">%</span></div> </div> </div> </td> </tr> <tr style="height: 14pt;"> <td style="background-color: #d9e5f1; border-bottom: 2pt solid #FFFFFF; padding-bottom: 2.75pt; padding-top: 2.75pt; vertical-align: Bottom; width: 479.71pt;"> <div style="line-height: 10pt; text-align: left;"> <div style="margin-left: 6pt; margin-right: 6pt; text-align: left; white-space: nowrap;"><span style="color: #003c78; font-family: arial; font-size: 8pt; margin-left: 0.0pt;">Fee waivers and/or reimbursements</span><span style="color: #003c78; font-family: arial; font-size: 4pt; margin-left: 0.0pt; position: relative; top: -3.25pt;">(e)</span> <div style="clear: right;"> </div> </div> </div> </td> <td style="background-color: #d9e5f1; border-bottom: 2pt solid #FFFFFF; padding-bottom: 2.75pt; padding-top: 2.75pt; vertical-align: Bottom; white-space: nowrap; width: 36.29pt;"> <div style="line-height: 10pt; margin-left: 6pt; margin-right: 6pt; text-align: right; width: 18.29pt;"> <div style="display: flex; margin: auto; width: 20.29pt;"> <div style="display: flex; white-space: nowrap; width: 20.29pt;"><span style="color: #003c78; font-family: arial; font-size: 8pt; width: 20.29pt;">(0.13</span></div> <div style="display: flex;"><span style="color: #003c78; font-family: arial; font-size: 8pt; width: auto;">%)</span></div> </div> </div> </td> </tr> <tr style="height: 10.5pt;"> <td style="background-color: #d9e5f1; padding-bottom: 2pt; padding-top: 2.75pt; vertical-align: Bottom; width: 479.71pt;"> <div style="line-height: 9pt; text-align: left;"> <div style="margin-left: 6pt; margin-right: 6pt; text-align: left; white-space: nowrap;"><span style="color: #003c78; font-family: arial; font-size: 8pt; font-weight: bold; margin-left: 0.0pt;">Total Annual Expenses after fee waivers and/or expense reimbursements</span></div> </div> </td> <td style="background-color: #d9e5f1; padding-bottom: 2pt; padding-top: 2.75pt; vertical-align: Bottom; white-space: nowrap; width: 36.29pt;"> <div style="line-height: 9pt; margin-left: 6pt; margin-right: 6pt; text-align: right; width: 18.29pt;"> <div style="display: flex; margin: auto; width: 20.29pt;"> <div style="display: flex; white-space: nowrap; width: 20.29pt;"><span style="color: #003c78; font-family: arial; font-size: 8pt; width: 20.29pt;">0.58</span></div> <div style="display: flex;"><span style="color: #003c78; font-family: arial; font-size: 8pt; width: auto;">%</span></div> </div> </div> </td> </tr> </table> <div> <div style="clear: both; margin-top: 4pt; position: relative; width: 100%;"> <div style="float: left; line-height: 9pt; text-align: left; width: 9.99pt;"><span style="color: #003c78; font-family: arial; font-size: 8pt;">(b)</span></div> <div style="float: left; line-height: 9pt; margin-left: 2.01pt; text-align: left; width: 499.00pt;"><span style="color: #003c78; font-family: arial; font-size: 8pt;">The Fund’s management fee is 0.42% of the Fund’s average daily net assets (which includes assets attributable to the Fund’s common and</span> <span style="color: #003c78; font-family: arial; font-size: 8pt;">preferred stock) and is borne by the holders of the Fund’s common stock (Common Stockholders). The management fee rate noted in the table</span> <span style="color: #003c78; font-family: arial; font-size: 8pt;">reflects the rate paid by Common Stockholders as a percentage of the Fund’s net assets attributable to Common Stock.</span></div> </div> <div style="clear: both; position: relative;"> </div> </div> <div style="float: left; line-height: 9pt; text-align: left; width: 9.68pt;"><span style="color: #003c78; font-family: arial; font-size: 8pt;">(c)</span></div> <div style="float: left; line-height: 9pt; margin-left: 2.32pt; text-align: left; width: 499.00pt;"><span style="color: #003c78; font-family: arial; font-size: 8pt;">Acquired fund fees and expenses has been restated to reflect current fees.</span></div> <div> <div style="clear: both; margin-top: 2pt; position: relative; width: 100%;"> <div style="float: left; line-height: 9pt; text-align: left; width: 10pt;"><span style="color: #003c78; font-family: arial; font-size: 8pt;">(d)</span></div> <div style="float: left; line-height: 9pt; margin-left: 2pt; text-align: left; width: 499.00pt;"><span style="color: #003c78; font-family: arial; font-size: 8pt;">“Total Annual Expenses Before Impact of Dividends on Preferred Stock” include acquired fund fees and expenses (expenses the Fund incurs</span> <span style="color: #003c78; font-family: arial; font-size: 8pt;">indirectly through its investments in other investment companies) and may be higher than “Expenses to average net assets for Common</span> <span style="color: #003c78; font-family: arial; font-size: 8pt;">Stock” shown in the</span> <span style="color: #003c78; font-family: arial; font-size: 8pt; font-style: italic;">Financial Highlights</span> <span style="color: #003c78; font-family: arial; font-size: 8pt;">section of the Fund’s Annual Report dated December 31, 2025 because “Expenses to average net</span> <span style="color: #003c78; font-family: arial; font-size: 8pt;">assets for Common Stock” does not include acquired fund fees and expenses.</span></div> </div> <div style="clear: both; position: relative;"> </div> </div> <div> <div style="clear: both; margin-top: 2pt; position: relative; width: 100%;"> <div style="float: left; line-height: 9pt; text-align: left; width: 9.73pt;"><span style="color: #003c78; font-family: arial; font-size: 8pt;">(e)</span></div> <div style="float: left; line-height: 9pt; margin-left: 2.27pt; text-align: left; width: 499.00pt;"><span style="color: #003c78; font-family: arial; font-size: 8pt;">Columbia Management Investment Advisers, LLC (the Investment Manager) has contractually agreed to implement a management fee waiver </span><span style="color: #003c78; font-family: arial; font-size: 8pt;">through April 30, 2028, unless sooner terminated at the sole discretion of the Fund’s Board of Directors, with respect to Fund assets invested in </span><span style="color: #003c78; font-family: arial; font-size: 8pt;">an affiliated underlying fund. Under this arrangement, the Investment Manager waives its net management fee (management fee less </span><span style="color: #003c78; font-family: arial; font-size: 8pt;">reimbursements/waivers) with respect to the Fund in an amount equal to the net management fee payable to the Investment Manager by such </span><span style="color: #003c78; font-family: arial; font-size: 8pt;">affiliated underlying fund on the assets invested in it.</span></div> </div> <div style="clear: both; position: relative;"> </div> </div> as a percentage of net assets attributable to common shares 0.0042 0.0004 0.0015 0.0061 0.0010 0.0071 -0.0013 0.0058 The Fund’s management fee is 0.42% of the Fund’s average daily net assets (which includes assets attributable to the Fund’s common andpreferred stock) and is borne by the holders of the Fund’s common stock (Common Stockholders). The management fee rate noted in the tablereflects the rate paid by Common Stockholders as a percentage of the Fund’s net assets attributable to Common Stock. “Total Annual Expenses Before Impact of Dividends on Preferred Stock” include acquired fund fees and expenses (expenses the Fund incursindirectly through its investments in other investment companies) and may be higher than “Expenses to average net assets for CommonStock” shown in theFinancial Highlightssection of the Fund’s Annual Report dated December 31, 2025 because “Expenses to average netassets for Common Stock” does not include acquired fund fees and expenses. <div style="margin-top: 4pt;"><span style="color: #003c78; font-family: arial; font-size: 10pt;">The following example is intended to help you compare the cost of investing in the Fund with the cost of investing in </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">other funds. The example illustrates the hypothetical expenses that you would incur over the time periods indicated, </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">and assumes that:</span></div> <div> <div style="clear: both; margin-top: 4pt; position: relative; width: 100%;"> <div style="float: left; line-height: 10pt; text-align: left; width: 4.45pt;"><span style="color: #003c78; font-family: arial; font-size: 8pt; position: relative; top: -0.5pt;">■</span></div> <div style="float: left; line-height: 12pt; margin-left: 6.55pt; text-align: left; width: 500.00pt;"><span style="color: #003c78; font-family: arial; font-size: 10pt;">you invest $1,000 in the Fund for the periods indicated,</span></div> </div> <div style="clear: both; position: relative;"> </div> </div> <div> <div style="clear: both; margin-top: 4pt; position: relative; width: 100%;"> <div style="float: left; line-height: 10pt; text-align: left; width: 4.45pt;"><span style="color: #003c78; font-family: arial; font-size: 8pt; position: relative; top: -0.5pt;">■</span></div> <div style="float: left; line-height: 12pt; margin-left: 6.55pt; text-align: left; width: 500.00pt;"><span style="color: #003c78; font-family: arial; font-size: 10pt;">all dividends and other distributions are reinvested at NAV per Share,</span></div> </div> <div style="clear: both; position: relative;"> </div> </div> <div> <div style="clear: both; margin-top: 4pt; position: relative; width: 100%;"> <div style="float: left; line-height: 10pt; text-align: left; width: 4.45pt;"><span style="color: #003c78; font-family: arial; font-size: 8pt; position: relative; top: -0.5pt;">■</span></div> <div style="float: left; line-height: 12pt; margin-left: 6.55pt; text-align: left; width: 500.00pt;"><span style="color: #003c78; font-family: arial; font-size: 10pt;">your investment has a 5% return each year, and</span></div> </div> <div style="clear: both; position: relative;"> </div> </div> <div> <div style="clear: both; margin-top: 4pt; position: relative; width: 100%;"> <div style="float: left; line-height: 10pt; text-align: left; width: 4.45pt;"><span style="color: #003c78; font-family: arial; font-size: 8pt; position: relative; top: -0.5pt;">■</span></div> <div style="float: left; line-height: 12pt; margin-left: 6.55pt; text-align: left; width: 500.00pt;"><span style="color: #003c78; font-family: arial; font-size: 10pt;">the Fund’s total annual operating expenses remain the same as shown in the </span><span style="color: #003c78; font-family: arial; font-size: 10pt; font-style: italic;">Annual Expenses</span><span style="color: #003c78; font-family: arial; font-size: 10pt;"> table </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">above (including the impact of dividends on preferred stock).</span></div> </div> <div style="clear: both; position: relative;"> </div> </div> <div style="margin-top: 4pt;"><span style="color: #003c78; font-family: arial; font-size: 10pt;">Since the waivers and/or reimbursements shown in the </span><span style="color: #003c78; font-family: arial; font-size: 10pt; font-style: italic;">Annual Expenses</span><span style="color: #003c78; font-family: arial; font-size: 10pt;"> table above expire as indicated in the </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">preceding table, they are only reflected in the 1 year example and the first year of the other examples. Although your </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">actual costs may be higher or lower, based on the assumptions listed above, your costs would be:</span><span style="color: #003c78; font-family: arial; font-size: 1pt; line-height: 1pt;"> </span></div> <table cellpadding="0" cellspacing="0" style="empty-cells: show; width: 516pt;"> <tr style="height: 13pt;"> <td style="border-bottom: 2pt solid #FFFFFF; padding-bottom: 3pt; padding-top: 3pt; vertical-align: Bottom; width: 335.88pt;"> <div style="line-height: 0.5pt; text-align: left;"> <div style="margin-left: 6pt; margin-right: 9pt; text-align: left; white-space: nowrap;"><span style="color: #003c78; font-family: arial; font-size: 8pt; font-weight: bold; margin-left: 0.0pt;"> </span></div> </div> </td> <td style="border-bottom: 2pt solid #FFFFFF; padding-bottom: 3pt; padding-top: 3pt; vertical-align: Bottom; width: 40.05pt;"> <div style="line-height: 10pt; text-align: left;"> <div style="margin-left: 7pt; margin-right: 7pt; text-align: center; white-space: nowrap;"><span style="color: #003c78; font-family: arial; font-size: 8pt; font-weight: bold;">1 year</span></div> </div> </td> <td style="border-bottom: 2pt solid #FFFFFF; padding-bottom: 3pt; padding-top: 3pt; vertical-align: Bottom; width: 44.16pt;"> <div style="line-height: 10pt; text-align: left;"> <div style="margin-left: 7pt; margin-right: 7pt; text-align: center; white-space: nowrap;"><span style="color: #003c78; font-family: arial; font-size: 8pt; font-weight: bold;">3 years</span></div> </div> </td> <td style="border-bottom: 2pt solid #FFFFFF; padding-bottom: 3pt; padding-top: 3pt; vertical-align: Bottom; width: 44.16pt;"> <div style="line-height: 10pt; text-align: left;"> <div style="margin-left: 7pt; margin-right: 7pt; text-align: center; white-space: nowrap;"><span style="color: #003c78; font-family: arial; font-size: 8pt; font-weight: bold;">5 years</span></div> </div> </td> <td style="border-bottom: 2pt solid #FFFFFF; padding-bottom: 3pt; padding-top: 3pt; vertical-align: Bottom; width: 51.74pt;"> <div style="line-height: 10pt; text-align: left;"> <div style="margin-left: 7pt; margin-right: 10pt; text-align: center; white-space: nowrap;"><span style="color: #003c78; font-family: arial; font-size: 8pt; font-weight: bold;">10 years</span></div> </div> </td> </tr> <tr style="height: 11pt;"> <td style="background-color: #d9e5f1; padding-bottom: 2pt; padding-top: 3pt; vertical-align: Bottom; width: 335.88pt;"> <div style="line-height: 9pt; text-align: left;"> <div style="margin-left: 6pt; margin-right: 9pt; text-align: left; white-space: nowrap;"><span style="color: #003c78; font-family: arial; font-size: 8pt; margin-left: 0.0pt;">Tri-Continental Corporation Common Stock</span></div> </div> </td> <td style="background-color: #d9e5f1; padding-bottom: 2pt; padding-top: 3pt; vertical-align: Bottom; white-space: nowrap; width: 40.05pt;"> <div style="line-height: 9pt; margin-left: 9pt; margin-right: 9pt; text-align: right; width: 22.05pt;"> <div style="display: flex; margin: auto; width: 10.97pt;"> <div style="display: flex; white-space: nowrap; width: 10.97pt;"><span style="color: #003c78; font-family: arial; font-size: 8pt; width: auto;">$</span><span style="color: #003c78; font-family: arial; font-size: 8pt; width: 10.97pt;">6</span></div> </div> </div> </td> <td style="background-color: #d9e5f1; padding-bottom: 2pt; padding-top: 3pt; vertical-align: Bottom; white-space: nowrap; width: 44.16pt;"> <div style="line-height: 9pt; margin-left: 9pt; margin-right: 9pt; text-align: right; width: 26.16pt;"> <div style="display: flex; margin: auto; width: 15.46pt;"> <div style="display: flex; white-space: nowrap; width: 15.46pt;"><span style="color: #003c78; font-family: arial; font-size: 8pt; width: auto;">$</span><span style="color: #003c78; font-family: arial; font-size: 8pt; width: 15.46pt;">21</span></div> </div> </div> </td> <td style="background-color: #d9e5f1; padding-bottom: 2pt; padding-top: 3pt; vertical-align: Bottom; white-space: nowrap; width: 44.16pt;"> <div style="line-height: 9pt; margin-left: 9pt; margin-right: 9pt; text-align: right; width: 26.16pt;"> <div style="display: flex; margin: auto; width: 15.46pt;"> <div style="display: flex; white-space: nowrap; width: 15.46pt;"><span style="color: #003c78; font-family: arial; font-size: 8pt; width: auto;">$</span><span style="color: #003c78; font-family: arial; font-size: 8pt; width: 15.46pt;">38</span></div> </div> </div> </td> <td style="background-color: #d9e5f1; padding-bottom: 2pt; padding-top: 3pt; vertical-align: Bottom; white-space: nowrap; width: 51.74pt;"> <div style="line-height: 9pt; margin-left: 9pt; margin-right: 6pt; text-align: right; width: 30.74pt;"> <div style="display: flex; margin: auto; width: 15.46pt;"> <div style="display: flex; white-space: nowrap; width: 15.46pt;"><span style="color: #003c78; font-family: arial; font-size: 8pt; width: auto;">$</span><span style="color: #003c78; font-family: arial; font-size: 8pt; width: 15.46pt;">87</span></div> </div> </div> </td> </tr> </table> <div style="margin-top: 10pt;"><span style="color: #003c78; font-family: arial; font-size: 10pt;">If dividends on the Fund’s $2.50 cumulative preferred stock (Preferred Stock) were not included, the total expenses </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">incurred for 1, 3, 5 and 10 years would be $5, $18, $33, and $75, respectively.</span></div> 6 21 38 87 <div style="margin-top: 4pt;"><span style="color: #003c78; font-family: arial; font-size: 10pt;">The Fund may also invest in shares of other investment companies as underlying funds. The Fund’s investments in </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">underlying funds may include open-end funds (mutual funds and exchange-traded funds (ETFs)), as well as other </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">closed-end funds, including tender offer funds and interval funds (collectively, underlying funds). The Fund may </span></div> <div style="line-height: 10.0pt; text-align: left;"><span style="color: #003c78; font-family: arial; font-size: 10pt;">invest in underlying funds managed by third parties as well as those managed by Columbia Management Investment </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">Advisers, LLC (Columbia Management or the Investment Manager) or its affiliates. The Fund expects to invest up to </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">10% of its assets in Columbia Credit Income Opportunities Fund, a closed-end interval fund managed by Columbia </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">Management.</span></div> <div style="margin-top: 4pt;"><span style="color: #003c78; font-family: arial; font-size: 10pt;">The Investment Manager is responsible for managing the Fund’s allocations of its assets to stocks (including </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">convertible preferred stock), bonds and other debt instruments (including convertible bonds), as well as to underlying </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">funds. The Fund allocates its investments based on analysis by portfolio management of the opportunities for the </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">Fund to achieve its objective, including within a given market.</span></div> <div style="margin-top: 10pt;"><span style="color: #003c78; font-family: arial; font-size: 10pt; font-style: italic;">The third bullet of the eighth paragraph on page 10 under the caption “Investment Objective and Policies” in the “More </span><span style="color: #003c78; font-family: arial; font-size: 10pt; font-style: italic;">Information About the Fund” section is hereby deleted.</span></div> <div style="margin-top: 4pt;"><span style="color: #003c78; font-family: arial; font-size: 10pt; font-weight: bold;">Investing in Other Funds Risk.</span><span style="color: #003c78; font-family: arial; font-size: 10pt;"> The Fund’s investment in other funds (affiliated and/or unaffiliated funds, including </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">mutual funds, exchange-traded funds (ETFs), other closed-end funds, including closed-end interval funds and tender </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">offer funds) subjects the Fund to the investment performance (positive or negative) and risks of the underlying funds </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">in direct proportion to the Fund’s investments therein. The performance of the underlying funds could be adversely </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">affected if other investors in the same underlying funds make relatively large investments and redemptions in such </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">underlying funds. The Fund, and its stockholders, indirectly bear a portion of the expenses of any funds in which the </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">Fund invests, which fees and expenses would be incremental to the fees and expenses to which the Fund already is </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">directly subject. Due to the expenses and costs of an underlying fund being shared by its investors, redemptions of </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">underlying fund shares by their investors could result in decreased economies of scale and increased operating </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">expenses for such underlying fund. These transactions might also result in higher brokerage, tax or other costs for </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">the underlying funds and their investors, such as the Fund. This risk may be particularly important when one investor </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">owns a substantial portion of the underlying funds. The Investment Manager typically selects underlying funds for </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">which it, or an affiliate, acts as the investment manager (affiliated underlying funds) and typically will select an </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">unaffiliated underlying fund only if the desired investment exposure is not available through an affiliated fund. The </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">Investment Manager has a conflict of interest in selecting affiliated underlying funds over unaffiliated underlying </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">funds because it receives management fees from affiliated underlying funds, and it has a conflict in selecting among </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">affiliated underlying funds, because the fees paid to it by certain affiliated underlying funds are higher than the fees </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">paid by other affiliated underlying funds. Also, to the extent that the Fund is constrained/restricted from investing (or </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">investing further) in a particular underlying fund for one or more reasons (e.g., underlying fund capacity constraints </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">or regulatory restrictions) or if the Fund chooses to sell its investment in an underlying fund because of poor </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">investment performance or for other reasons, the Fund may have to invest in other underlying funds, including less </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">desirable funds – from a strategy or investment performance standpoint – which could have a negative impact on </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">Fund performance. In addition, Fund performance could be negatively impacted if an appropriate alternate </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">underlying fund is not identified in a timely manner or at all. The underlying funds may not achieve their investment </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">objective. The Fund, through its investment in underlying funds, may not achieve its investment objective.</span></div> <div style="margin-top: 4pt;"><span style="color: #003c78; font-family: arial; font-size: 10pt; font-weight: bold;">Investing in Other Funds Risk.</span><span style="color: #003c78; font-family: arial; font-size: 10pt;"> The Fund’s investment in other funds (affiliated and/or unaffiliated funds, including </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">mutual funds, exchange-traded funds (ETFs), other closed-end funds, including closed-end interval funds and tender </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">offer funds) subjects the Fund to the investment performance (positive or negative) and risks of the underlying funds </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">in direct proportion to the Fund’s investments therein. The performance of the underlying funds could be adversely </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">affected if other investors in the same underlying funds make relatively large investments and redemptions in such </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">underlying funds. The Fund, and its stockholders, indirectly bear a portion of the expenses of any funds in which the </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">Fund invests, which fees and expenses would be incremental to the fees and expenses to which the Fund already is </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">directly subject. Due to the expenses and costs of an underlying fund being shared by its investors, redemptions of </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">underlying fund shares by their investors could result in decreased economies of scale and increased operating </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">expenses for such underlying fund. These transactions might also result in higher brokerage, tax or other costs for </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">the underlying funds and their investors, such as the Fund. This risk may be particularly important when one investor </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">owns a substantial portion of the underlying funds. The Investment Manager typically selects underlying funds for </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">which it, or an affiliate, acts as the investment manager (affiliated underlying funds) and typically will select an </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">unaffiliated underlying fund only if the desired investment exposure is not available through an affiliated fund. The </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">Investment Manager has a conflict of interest in selecting affiliated underlying funds over unaffiliated underlying </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">funds because it receives management fees from affiliated underlying funds, and it has a conflict in selecting among </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">affiliated underlying funds, because the fees paid to it by certain affiliated underlying funds are higher than the fees </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">paid by other affiliated underlying funds. Also, to the extent that the Fund is constrained/restricted from investing (or </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">investing further) in a particular underlying fund for one or more reasons (e.g., underlying fund capacity constraints </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">or regulatory restrictions) or if the Fund chooses to sell its investment in an underlying fund because of poor </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">investment performance or for other reasons, the Fund may have to invest in other underlying funds, including less </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">desirable funds – from a strategy or investment performance standpoint – which could have a negative impact on </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">Fund performance. In addition, Fund performance could be negatively impacted if an appropriate alternate </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">underlying fund is not identified in a timely manner or at all. The underlying funds may not achieve their investment </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">objective. The Fund, through its investment in underlying funds, may not achieve its investment objective.</span></div> <div style="margin-top: 4pt;"><span style="color: #003c78; font-family: arial; font-size: 10pt; font-weight: bold;">Unlisted Closed-End Interval Fund Illiquidity Risks.</span><span style="color: #003c78; font-family: arial; font-size: 10pt;"> An investment by the Fund in underlying funds that are </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">structured as interval funds involves risks. The Fund may invest in interval funds, including Columbia Credit Income </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">Opportunities Fund, that do not list their shares for trading on any securities exchange. Thus, for these unlisted </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">funds, there is currently no secondary market for their shares, and the Fund does not expect any secondary market to </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">develop for shares of underlying unlisted interval funds. Investors, such as the Fund, in shares of interval funds are </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">not able to have their interval fund shares redeemed or otherwise sell these shares on a daily basis because of the </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">unlisted closed-end fund's structure. In order to provide liquidity to interval fund investors, interval funds conduct </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">periodic repurchase offers (to buy back interval fund shares), which can be as frequently as monthly but as </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">infrequently as annually. As such, when the Fund invests in interval funds, while interval funds provide periodic </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">liquidity through regular repurchase offers, the Fund considers its investments in interval fund shares to be illiquid </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">and longer term investments. When the Fund invests in Columbia Credit Income Opportunities Fund, an affiliated </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">closed-end interval fund, the Fund is further limited in its ability to sell its shares in this underlying fund (back to the </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">underlying fund), particularly because the underlying fund only offers to repurchase its shares from investors on a </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">quarterly basis and where any such offer is over-subscribed, the Fund could be prevented from selling the full </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">amount of underlying fund shares that it desires to sell (because the Fund is an affiliate) at the most advantageous </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">time. In addition, the need to provide cash to shareholders on a periodic basis in connection with the repurchase of </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">shares may cause an interval fund to sell its portfolio securities at disadvantageous times and/or may limit the </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">ability of the interval fund to participate in new investment opportunities. Interval funds generally can invest a </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">significant portion of their assets in illiquid securities.</span><span style="color: #003c78; font-family: arial; font-size: 10pt; line-height: 10pt;"> </span></div> <div style="margin-top: 4pt;"><span style="color: #003c78; font-family: arial; font-size: 10pt; font-weight: bold;">Unlisted Closed-End Interval Fund Illiquidity Risks.</span><span style="color: #003c78; font-family: arial; font-size: 10pt;"> An investment by the Fund in underlying funds that are </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">structured as interval funds involves risks. The Fund may invest in interval funds, including Columbia Credit Income </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">Opportunities Fund, that do not list their shares for trading on any securities exchange. Thus, for these unlisted </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">funds, there is currently no secondary market for their shares, and the Fund does not expect any secondary market to </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">develop for shares of underlying unlisted interval funds. Investors, such as the Fund, in shares of interval funds are </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">not able to have their interval fund shares redeemed or otherwise sell these shares on a daily basis because of the </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">unlisted closed-end fund's structure. In order to provide liquidity to interval fund investors, interval funds conduct </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">periodic repurchase offers (to buy back interval fund shares), which can be as frequently as monthly but as </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">infrequently as annually. As such, when the Fund invests in interval funds, while interval funds provide periodic </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">liquidity through regular repurchase offers, the Fund considers its investments in interval fund shares to be illiquid </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">and longer term investments. When the Fund invests in Columbia Credit Income Opportunities Fund, an affiliated </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">closed-end interval fund, the Fund is further limited in its ability to sell its shares in this underlying fund (back to the </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">underlying fund), particularly because the underlying fund only offers to repurchase its shares from investors on a </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">quarterly basis and where any such offer is over-subscribed, the Fund could be prevented from selling the full </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">amount of underlying fund shares that it desires to sell (because the Fund is an affiliate) at the most advantageous </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">time. In addition, the need to provide cash to shareholders on a periodic basis in connection with the repurchase of </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">shares may cause an interval fund to sell its portfolio securities at disadvantageous times and/or may limit the </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">ability of the interval fund to participate in new investment opportunities. Interval funds generally can invest a </span><span style="color: #003c78; font-family: arial; font-size: 10pt;">significant portion of their assets in illiquid securities.</span><span style="color: #003c78; font-family: arial; font-size: 10pt; line-height: 10pt;"> </span></div> The Fund’s management fee is 0.42% of the Fund’s average daily net assets (which includes assets attributable to the Fund’s common and preferred stock) and is borne by the holders of the Fund’s common stock (Common Stockholders). The management fee rate noted in the table reflects the rate paid by Common Stockholders as a percentage of the Fund’s net assets attributable to Common Stock. Acquired fund fees and expenses has been restated to reflect current fees. “Total Annual Expenses Before Impact of Dividends on Preferred Stock” include acquired fund fees and expenses (expenses the Fund incurs indirectly through its investments in other investment companies) and may be higher than “Expenses to average net assets for Common Stock” shown in the Financial Highlights section of the Fund’s Annual Report dated December 31, 2025 because “Expenses to average net assets for Common Stock” does not include acquired fund fees and expenses. Columbia Management Investment Advisers, LLC (the Investment Manager) has contractually agreed to implement a management fee waiver through April 30, 2028, unless sooner terminated at the sole discretion of the Fund’s Board of Directors, with respect to Fund assets invested in an affiliated underlying fund. Under this arrangement, the Investment Manager waives its net management fee (management fee less reimbursements/waivers) with respect to the Fund in an amount equal to the net management fee payable to the Investment Manager by such affiliated underlying fund on the assets invested in it.