0000003521 2025-10-31 2025-10-31 0000003521 af:S000009160Member 2025-10-31 2025-10-31 false 2025-10-31 497 0000003521 2026-02-27 N-1A <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">THE ALGER FUNDS </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">Alger Small Cap Growth Fund </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">(the “Fund”) </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">Supplement dated May 20, 2026 to the </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">Prospectus, Summary Prospectus and </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">Statement of Additional Information of the Fund </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">dated March 1, 2026 </div><div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;text-align:justify;">Effective on or about the close of business on August 1, 2026, all of the issued and outstanding Class B shares of the Fund (“Class B Shares”) will be converted into Class A shares of the Fund (“Class A Shares”) with the same relative aggregate net asset value as the Class B Shares held immediately prior to the conversion. The Class A Shares currently have a lower total expense ratio and lower distribution fees and shareholder servicing fees payable under the Fund’s 12b‑1 plan than the Class B Shares. No sales load, fee, or other charge will be imposed on the conversion of the Class B Shares and, once converted, the Class A Shares will not be subject to the contingent deferred sales charge (if any) currently charged on the redemption of the Class B Shares. Please refer to the Fund’s prospectus for Class A Shares for more information on the Class A Shares. The conversion is not expected to be a taxable event for federal income tax purposes and should not result in recognition of gain or loss by converting shareholders. Upon completion of the conversion, Class B Shares will no longer be offered. </div> <div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">THE ALGER FUNDS </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">Alger Small Cap Growth Fund </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">(the “Fund”) </div><div style="margin-top:6pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">Supplement dated May 20, 2026 to the </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">Prospectus, Summary Prospectus and </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">Statement of Additional Information of the Fund </div><div style="margin-top:0pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;font-weight:bold;text-align:center;">dated March 1, 2026 </div><div style="margin-top:12pt;margin-bottom:0pt;font-size:10pt;font-family:times new roman;text-align:justify;">Effective on or about the close of business on August 1, 2026, all of the issued and outstanding Class B shares of the Fund (“Class B Shares”) will be converted into Class A shares of the Fund (“Class A Shares”) with the same relative aggregate net asset value as the Class B Shares held immediately prior to the conversion. The Class A Shares currently have a lower total expense ratio and lower distribution fees and shareholder servicing fees payable under the Fund’s 12b‑1 plan than the Class B Shares. No sales load, fee, or other charge will be imposed on the conversion of the Class B Shares and, once converted, the Class A Shares will not be subject to the contingent deferred sales charge (if any) currently charged on the redemption of the Class B Shares. Please refer to the Fund’s prospectus for Class A Shares for more information on the Class A Shares. The conversion is not expected to be a taxable event for federal income tax purposes and should not result in recognition of gain or loss by converting shareholders. Upon completion of the conversion, Class B Shares will no longer be offered. </div> ALGER FUNDS