0001352280 2026-05-31 2026-05-31 0001352280 cfstii:S000036208Member 2026-05-31 2026-05-31 false 2026-05-31 497 0001352280 N-1A <div style="line-height:10.0pt;text-align:center;"><span style="color:#003c78;font-family:arial;font-size:10pt;font-weight:bold">Supplement dated October 1, 2026</span></div><div style="margin-top:4pt;"><span style="color:#003c78;font-family:arial;font-size:10pt">to the Prospectus and Summary Prospectus, of the following fund (the Fund):</span><span style="color:#003c78;float:left;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:14pt"> <td style="background-color:#003C78;border-bottom:2pt solid #FFFFFF;padding-bottom:3pt;padding-top:3pt;vertical-align:Bottom;width:339.64pt;"> <div style="line-height:10pt;text-align:left;"> <div style="margin-left:6pt;margin-right:6pt;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">Fund</span></div> </div> </td> <td style="background-color:#003C78;border-bottom:2pt solid #FFFFFF;padding-bottom:3pt;padding-top:3pt;vertical-align:Bottom;width:176.36pt;"> <div style="line-height:10pt;text-align:left;"> <div style="margin-left:6pt;margin-right:12pt;margin-top:1pt;text-align:center;white-space:nowrap;"><span style="color:#ffffff;font-family:arial;font-size:8pt;font-weight:bold">Prospectus and Summary Prospectus Dated</span></div> </div> </td> </tr> <tr style="height:15pt"> <td style="background-color:#D9E5F1;border-bottom:2pt solid #FFFFFF;padding-bottom:3pt;padding-top:3pt;vertical-align:Bottom;width:339.64pt;"> <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">Columbia Funds Series Trust II</span></div> </div> </td> <td style="background-color:#D9E5F1;border-bottom:2pt solid #FFFFFF;padding-bottom:3pt;padding-top:3pt;vertical-align:Bottom;width:176.36pt;"> <div style="line-height:0.5pt;text-align:left;"> <div style="margin-left:6pt;margin-right:12pt;text-align:center;white-space:nowrap;"><span style="color:#003c78;font-family:arial;font-size:8pt;margin-left:-85.18pt"> </span></div> </div> </td> </tr> <tr style="height:11pt"> <td style="background-color:#D9E5F1;padding-bottom:2pt;padding-top:3pt;vertical-align:Bottom;width:339.64pt;"> <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;margin-left:0.0pt"> Multi-Manager Value Strategies Fund</span></div> </div> </td> <td style="background-color:#D9E5F1;padding-bottom:2pt;padding-top:3pt;vertical-align:Bottom;width:176.36pt;"> <div style="line-height:9pt;text-align:left;"> <div style="margin-left:6pt;margin-right:12pt;text-align:center;white-space:nowrap;"><span style="color:#003c78;font-family:arial;font-size:8pt;margin-left:0.00pt">10/1/2026</span></div> </div> </td> </tr> </table><div style="margin-top:12pt;"><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">As previously announced, o</span><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">n September 17, 2026, the Fund’s Board of Trustees approved certain changes to the Fund’s </span><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">subadvisers and principal investment strategies effective on or about October 26, 2026 (the Effective Date). As a result, </span><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">from and after the Effective Date, Newton Investment Management North America, LLC (Newton) will assume day-to-day</span><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic"> management of a portion of the Fund’s portfolio. Accordingly, the changes described in this Supplement are hereby </span><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">made to the Fund’s Prospectus and Summary Prospectus.</span></div><div style="margin-top:12pt;"><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">The fifth paragraph under </span><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">the heading “Principal Investment Strategies” in the Summary Prospectus and in </span><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">the </span><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">“</span><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">Summary of the Fund” section of the Prospectus is hereby superseded and replaced with the following:</span></div><div style="margin-top:4pt;"><span style="color:#003c78;font-family:arial;font-size:10pt">Columbia Management Investment Advisers, LLC (Columbia Management or the Investment Manager) serves as the </span><span style="color:#003c78;font-family:arial;font-size:10pt">investment manager for the Fund and attempts to achieve the Fund’s objective by managing a portion of the Fund’s </span><span style="color:#003c78;font-family:arial;font-size:10pt">assets and selecting one or more subadvisers to manage other portions of the Fund’s assets independently of each </span><span style="color:#003c78;font-family:arial;font-size:10pt">other and Columbia Management.</span><span style="color:#003c78;font-family:arial;font-size:10pt;line-height:10pt"> </span><span style="color:#003c78;font-family:arial;font-size:10pt">The Fund’s subadvisers are American Century Investment Management, Inc. </span><span style="color:#003c78;font-family:arial;font-size:10pt">(American Century) and Newton Investment Management North America, LLC (Newton).</span><span style="color:#003c78;font-family:arial;font-size:10pt;line-height:10pt"> </span></div><div style="margin-top:10pt;"><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">The rest of the section remains the same.</span></div><div style="margin-top:12pt;"><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">The third paragraph under </span><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">the heading “Performance Information” in the Summary Prospectus and in the </span><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">“</span><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">Summary of </span><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">the Fund” section of the Prospectus is hereby superseded and replaced with the following:</span></div><div style="margin-top:4pt;"><span style="color:#003c78;font-family:arial;font-size:10pt">The Fund’s performance prior to October 2026 reflects returns achieved by one or more different subadviser(s) that </span><span style="color:#003c78;font-family:arial;font-size:10pt">managed the Fund according to different principal investment strategies. If the Fund’s current subadvisers and </span><span style="color:#003c78;font-family:arial;font-size:10pt">strategies had been in place for the prior periods, results shown may have been different.</span></div><div style="margin-top:10pt;"><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">The rest of the section remains the same.</span></div> <div style="line-height:10.0pt;text-align:center;"><span style="color:#003c78;font-family:arial;font-size:10pt;font-weight:bold">Supplement dated October 1, 2026</span></div><div style="margin-top:4pt;"><span style="color:#003c78;font-family:arial;font-size:10pt">to the Prospectus and Summary Prospectus, of the following fund (the Fund):</span><span style="color:#003c78;float:left;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:14pt"> <td style="background-color:#003C78;border-bottom:2pt solid #FFFFFF;padding-bottom:3pt;padding-top:3pt;vertical-align:Bottom;width:339.64pt;"> <div style="line-height:10pt;text-align:left;"> <div style="margin-left:6pt;margin-right:6pt;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">Fund</span></div> </div> </td> <td style="background-color:#003C78;border-bottom:2pt solid #FFFFFF;padding-bottom:3pt;padding-top:3pt;vertical-align:Bottom;width:176.36pt;"> <div style="line-height:10pt;text-align:left;"> <div style="margin-left:6pt;margin-right:12pt;margin-top:1pt;text-align:center;white-space:nowrap;"><span style="color:#ffffff;font-family:arial;font-size:8pt;font-weight:bold">Prospectus and Summary Prospectus Dated</span></div> </div> </td> </tr> <tr style="height:15pt"> <td style="background-color:#D9E5F1;border-bottom:2pt solid #FFFFFF;padding-bottom:3pt;padding-top:3pt;vertical-align:Bottom;width:339.64pt;"> <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">Columbia Funds Series Trust II</span></div> </div> </td> <td style="background-color:#D9E5F1;border-bottom:2pt solid #FFFFFF;padding-bottom:3pt;padding-top:3pt;vertical-align:Bottom;width:176.36pt;"> <div style="line-height:0.5pt;text-align:left;"> <div style="margin-left:6pt;margin-right:12pt;text-align:center;white-space:nowrap;"><span style="color:#003c78;font-family:arial;font-size:8pt;margin-left:-85.18pt"> </span></div> </div> </td> </tr> <tr style="height:11pt"> <td style="background-color:#D9E5F1;padding-bottom:2pt;padding-top:3pt;vertical-align:Bottom;width:339.64pt;"> <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;margin-left:0.0pt"> Multi-Manager Value Strategies Fund</span></div> </div> </td> <td style="background-color:#D9E5F1;padding-bottom:2pt;padding-top:3pt;vertical-align:Bottom;width:176.36pt;"> <div style="line-height:9pt;text-align:left;"> <div style="margin-left:6pt;margin-right:12pt;text-align:center;white-space:nowrap;"><span style="color:#003c78;font-family:arial;font-size:8pt;margin-left:0.00pt">10/1/2026</span></div> </div> </td> </tr> </table><div style="margin-top:12pt;"><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">As previously announced, o</span><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">n September 17, 2026, the Fund’s Board of Trustees approved certain changes to the Fund’s </span><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">subadvisers and principal investment strategies effective on or about October 26, 2026 (the Effective Date). As a result, </span><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">from and after the Effective Date, Newton Investment Management North America, LLC (Newton) will assume day-to-day</span><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic"> management of a portion of the Fund’s portfolio. Accordingly, the changes described in this Supplement are hereby </span><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">made to the Fund’s Prospectus and Summary Prospectus.</span></div><div style="margin-top:12pt;"><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">The fifth paragraph under </span><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">the heading “Principal Investment Strategies” in the Summary Prospectus and in </span><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">the </span><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">“</span><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">Summary of the Fund” section of the Prospectus is hereby superseded and replaced with the following:</span></div><div style="margin-top:4pt;"><span style="color:#003c78;font-family:arial;font-size:10pt">Columbia Management Investment Advisers, LLC (Columbia Management or the Investment Manager) serves as the </span><span style="color:#003c78;font-family:arial;font-size:10pt">investment manager for the Fund and attempts to achieve the Fund’s objective by managing a portion of the Fund’s </span><span style="color:#003c78;font-family:arial;font-size:10pt">assets and selecting one or more subadvisers to manage other portions of the Fund’s assets independently of each </span><span style="color:#003c78;font-family:arial;font-size:10pt">other and Columbia Management.</span><span style="color:#003c78;font-family:arial;font-size:10pt;line-height:10pt"> </span><span style="color:#003c78;font-family:arial;font-size:10pt">The Fund’s subadvisers are American Century Investment Management, Inc. </span><span style="color:#003c78;font-family:arial;font-size:10pt">(American Century) and Newton Investment Management North America, LLC (Newton).</span><span style="color:#003c78;font-family:arial;font-size:10pt;line-height:10pt"> </span></div><div style="margin-top:10pt;"><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">The rest of the section remains the same.</span></div><div style="margin-top:12pt;"><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">The third paragraph under </span><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">the heading “Performance Information” in the Summary Prospectus and in the </span><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">“</span><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">Summary of </span><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">the Fund” section of the Prospectus is hereby superseded and replaced with the following:</span></div><div style="margin-top:4pt;"><span style="color:#003c78;font-family:arial;font-size:10pt">The Fund’s performance prior to October 2026 reflects returns achieved by one or more different subadviser(s) that </span><span style="color:#003c78;font-family:arial;font-size:10pt">managed the Fund according to different principal investment strategies. If the Fund’s current subadvisers and </span><span style="color:#003c78;font-family:arial;font-size:10pt">strategies had been in place for the prior periods, results shown may have been different.</span></div><div style="margin-top:10pt;"><span style="color:#003c78;font-family:arial;font-size:10pt;font-style:italic">The rest of the section remains the same.</span></div> Columbia Funds Series Trust II 2026-10-01