0000917469 2021-05-01 2021-05-01 0000917469 lsfi:S000006639Member 2021-05-01 2021-05-01 0000917469 lsfi:S000006642Member 2021-05-01 2021-05-01 0000917469 lsfi:S000006643Member 2021-05-01 2021-05-01 0000917469 lsfi:S000006645Member 2021-05-01 2021-05-01 497 2020-12-31 0000917469 false N-1A <div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-align: center;"><div style="font-weight:bold;display:inline;">LOOMIS SAYLES FUNDS I​​​​​​​ </div></div> <div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-align: center;"><div style="font-weight:bold;display:inline;">(each a “Trust” and collectively, the “Trusts”) </div></div> <div style="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;text-align:center"><div style="font-style: normal; letter-spacing: 0px; top: 0px;display:inline;"><div style="font-style:italic;display:inline;">Supplement dated August 4, 2021, to the Loomis Sayles Funds Summary Prospectuses, Prospectuses and Statements of <div style="letter-spacing: 0px; top: 0px;display:inline;">Additional </div>Information, each dated February 1, 2021 and May 1, 2021, <div style="letter-spacing: 0px; top: 0px;display:inline;">Natixis </div>Funds Summary Prospectuses, Prospectuses and Statements of Additional Information, each dated February 1, 2021, April 1, 2021, May 1, 2021, June 1, 2021 and the Natixis ETFs Summary Prospectuses, Prospectuses and Statements of Additional Information, each dated May 1, 2021, as may be <div style="letter-spacing: 0px; top: 0px;display:inline;">revised </div>or supplemented from time to time, for the following funds: </div></div></div> <div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt"> </div> <table cellpadding="0" cellspacing="0" style="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:11pt;width:100%;border:0;margin:0 auto"> <tr style="font-size: 0px;"> <td style="width:51%"/> <td style="vertical-align:bottom;width:1%"/> <td style="width:48%"/></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">AEW Global Focused Real Estate Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Securitized Asset Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">AlphaSimplex Global Alternatives Fund</div></div><div style="margin-top: 0pt; margin-bottom: 1pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">AlphaSimplex Managed Futures Strategy Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Senior Floating Rate and Fixed Income Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Gateway Fund</div></div><div style="margin-top: 0pt; margin-bottom: 1pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Gateway Equity Call Premium Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Small Cap Growth Fund</div></div><div style="margin-top: 0pt; margin-bottom: 1pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Small Cap Value Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Bond Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Small/Mid Cap Growth Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Core Plus Bond Fund</div></div><div style="margin-top: 0pt; margin-bottom: 1pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Credit Income Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Strategic Alpha Fund</div></div><div style="margin-top: 0pt; margin-bottom: 1pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Strategic Income Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Fixed Income Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Mirova Global Green Bond Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Global Allocation Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Mirova Global Sustainable Equity Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Global Bond Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Mirova International Sustainable Equity Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Global Growth Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Mirova U.S. Sustainable Equity Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Growth Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis Loomis Sayles Short Duration Income ETF</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles High Income Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis Oakmark Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles High Income Opportunities Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis Oakmark International Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Inflation Protected Securities Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis U.S. Equity Opportunities Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Institutional High Income Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis U.S. Equity Opportunities ETF</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Intermediate Duration Bond Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis Vaughan Nelson Mid Cap ETF</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Intermediate Municipal Bond Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis Vaughan Nelson Select ETF</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles International Growth Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Vaughan Nelson Mid Cap Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Investment Grade Bond Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Vaughan Nelson Select Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Investment Grade Fixed Income Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Vaughan Nelson Small Cap Value Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt"> <td style="vertical-align:bottom"><div style="font-size: 11pt; letter-spacing: 0px; top: 0px;display:inline;"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Limited Term Government and Agency Fund</div></div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"/></tr></table> <div style="margin-top: 12pt; margin-bottom: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-align: center;"><div style="font-weight:bold;display:inline;"><div style="font-style: normal; letter-spacing: 0px; top: 0px;display:inline;"><div style="font-style:italic;display:inline;">(each a “Fund” and together the “Funds”) </div></div></div></div> <div style="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Effective July 30, 2021, the names of the following entities are changed as set forth below and all references to such entities in the <div style="letter-spacing: 0px; top: 0px;display:inline;">summary </div>prospectuses, prospectuses and statements of additional information of the Funds are revised accordingly: </div> <div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt"> </div> <table cellpadding="0" cellspacing="0" style="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt;width:50%;border:0;margin:0 auto"> <tr style="font-size: 0px;"> <td style="width:51%"/> <td style="vertical-align:bottom;width:1%"/> <td style="width:48%"/></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:8pt"> <td style="vertical-align:bottom;white-space:nowrap"><div style="margin-top: 0pt; margin-bottom: 0pt; border-bottom: 1pt solid rgb(0, 0, 0); display: table-cell; font-size: 8pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Current Name</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; border-bottom: 1pt solid rgb(0, 0, 0); display: table-cell; font-size: 8pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">New Name</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt"> <td style="vertical-align:top"><div style="margin-top: 0pt; margin-bottom: 0pt; margin-left: 1em; text-indent: -1em; font-size: 10pt; font-family: &quot;Times New Roman&quot;; line-height: normal;">Natixis Advisors, L.P.</div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom;white-space:nowrap">Natixis Advisors, LLC</td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt"> <td style="vertical-align:top"><div style="margin-top: 0pt; margin-bottom: 0pt; margin-left: 1em; text-indent: -1em; font-size: 10pt; font-family: &quot;Times New Roman&quot;; line-height: normal;">Natixis Distribution, L.P.</div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom;white-space:nowrap">Natixis Distribution, LLC</td></tr></table> <div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-align: center;"><div style="font-weight:bold;display:inline;">LOOMIS SAYLES FUNDS I​​​​​​​ </div></div> <div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-align: center;"><div style="font-weight:bold;display:inline;">(each a “Trust” and collectively, the “Trusts”) </div></div> <div style="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;text-align:center"><div style="font-style: normal; letter-spacing: 0px; top: 0px;display:inline;"><div style="font-style:italic;display:inline;">Supplement dated August 4, 2021, to the Loomis Sayles Funds Summary Prospectuses, Prospectuses and Statements of <div style="letter-spacing: 0px; top: 0px;display:inline;">Additional </div>Information, each dated February 1, 2021 and May 1, 2021, <div style="letter-spacing: 0px; top: 0px;display:inline;">Natixis </div>Funds Summary Prospectuses, Prospectuses and Statements of Additional Information, each dated February 1, 2021, April 1, 2021, May 1, 2021, June 1, 2021 and the Natixis ETFs Summary Prospectuses, Prospectuses and Statements of Additional Information, each dated May 1, 2021, as may be <div style="letter-spacing: 0px; top: 0px;display:inline;">revised </div>or supplemented from time to time, for the following funds: </div></div></div> <div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt"> </div> <table cellpadding="0" cellspacing="0" style="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:11pt;width:100%;border:0;margin:0 auto"> <tr style="font-size: 0px;"> <td style="width:51%"/> <td style="vertical-align:bottom;width:1%"/> <td style="width:48%"/></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">AEW Global Focused Real Estate Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Securitized Asset Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">AlphaSimplex Global Alternatives Fund</div></div><div style="margin-top: 0pt; margin-bottom: 1pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">AlphaSimplex Managed Futures Strategy Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Senior Floating Rate and Fixed Income Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Gateway Fund</div></div><div style="margin-top: 0pt; margin-bottom: 1pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Gateway Equity Call Premium Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Small Cap Growth Fund</div></div><div style="margin-top: 0pt; margin-bottom: 1pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Small Cap Value Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Bond Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Small/Mid Cap Growth Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Core Plus Bond Fund</div></div><div style="margin-top: 0pt; margin-bottom: 1pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Credit Income Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Strategic Alpha Fund</div></div><div style="margin-top: 0pt; margin-bottom: 1pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Strategic Income Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Fixed Income Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Mirova Global Green Bond Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Global Allocation Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Mirova Global Sustainable Equity Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Global Bond Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Mirova International Sustainable Equity Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Global Growth Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Mirova U.S. Sustainable Equity Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Growth Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis Loomis Sayles Short Duration Income ETF</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles High Income Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis Oakmark Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles High Income Opportunities Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis Oakmark International Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Inflation Protected Securities Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis U.S. Equity Opportunities Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Institutional High Income Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis U.S. Equity Opportunities ETF</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Intermediate Duration Bond Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis Vaughan Nelson Mid Cap ETF</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Intermediate Municipal Bond Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis Vaughan Nelson Select ETF</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles International Growth Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Vaughan Nelson Mid Cap Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Investment Grade Bond Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Vaughan Nelson Select Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Investment Grade Fixed Income Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Vaughan Nelson Small Cap Value Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt"> <td style="vertical-align:bottom"><div style="font-size: 11pt; letter-spacing: 0px; top: 0px;display:inline;"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Limited Term Government and Agency Fund</div></div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"/></tr></table> <div style="margin-top: 12pt; margin-bottom: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-align: center;"><div style="font-weight:bold;display:inline;"><div style="font-style: normal; letter-spacing: 0px; top: 0px;display:inline;"><div style="font-style:italic;display:inline;">(each a “Fund” and together the “Funds”) </div></div></div></div> <div style="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Effective July 30, 2021, the names of the following entities are changed as set forth below and all references to such entities in the <div style="letter-spacing: 0px; top: 0px;display:inline;">summary </div>prospectuses, prospectuses and statements of additional information of the Funds are revised accordingly: </div> <div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt"> </div> <table cellpadding="0" cellspacing="0" style="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt;width:50%;border:0;margin:0 auto"> <tr style="font-size: 0px;"> <td style="width:51%"/> <td style="vertical-align:bottom;width:1%"/> <td style="width:48%"/></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:8pt"> <td style="vertical-align:bottom;white-space:nowrap"><div style="margin-top: 0pt; margin-bottom: 0pt; border-bottom: 1pt solid rgb(0, 0, 0); display: table-cell; font-size: 8pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Current Name</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; border-bottom: 1pt solid rgb(0, 0, 0); display: table-cell; font-size: 8pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">New Name</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt"> <td style="vertical-align:top"><div style="margin-top: 0pt; margin-bottom: 0pt; margin-left: 1em; text-indent: -1em; font-size: 10pt; font-family: &quot;Times New Roman&quot;; line-height: normal;">Natixis Advisors, L.P.</div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom;white-space:nowrap">Natixis Advisors, LLC</td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt"> <td style="vertical-align:top"><div style="margin-top: 0pt; margin-bottom: 0pt; margin-left: 1em; text-indent: -1em; font-size: 10pt; font-family: &quot;Times New Roman&quot;; line-height: normal;">Natixis Distribution, L.P.</div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom;white-space:nowrap">Natixis Distribution, LLC</td></tr></table> LOOMIS SAYLES FUNDS I​​​​​​​ <div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-align: center;"><div style="font-weight:bold;display:inline;">LOOMIS SAYLES FUNDS I​​​​​​​ </div></div> <div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-align: center;"><div style="font-weight:bold;display:inline;">(each a “Trust” and collectively, the “Trusts”) </div></div> <div style="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;text-align:center"><div style="font-style: normal; letter-spacing: 0px; top: 0px;display:inline;"><div style="font-style:italic;display:inline;">Supplement dated August 4, 2021, to the Loomis Sayles Funds Summary Prospectuses, Prospectuses and Statements of <div style="letter-spacing: 0px; top: 0px;display:inline;">Additional </div>Information, each dated February 1, 2021 and May 1, 2021, <div style="letter-spacing: 0px; top: 0px;display:inline;">Natixis </div>Funds Summary Prospectuses, Prospectuses and Statements of Additional Information, each dated February 1, 2021, April 1, 2021, May 1, 2021, June 1, 2021 and the Natixis ETFs Summary Prospectuses, Prospectuses and Statements of Additional Information, each dated May 1, 2021, as may be <div style="letter-spacing: 0px; top: 0px;display:inline;">revised </div>or supplemented from time to time, for the following funds: </div></div></div> <div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt"> </div> <table cellpadding="0" cellspacing="0" style="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:11pt;width:100%;border:0;margin:0 auto"> <tr style="font-size: 0px;"> <td style="width:51%"/> <td style="vertical-align:bottom;width:1%"/> <td style="width:48%"/></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">AEW Global Focused Real Estate Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Securitized Asset Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">AlphaSimplex Global Alternatives Fund</div></div><div style="margin-top: 0pt; margin-bottom: 1pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">AlphaSimplex Managed Futures Strategy Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Senior Floating Rate and Fixed Income Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Gateway Fund</div></div><div style="margin-top: 0pt; margin-bottom: 1pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Gateway Equity Call Premium Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Small Cap Growth Fund</div></div><div style="margin-top: 0pt; margin-bottom: 1pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Small Cap Value Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Bond Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Small/Mid Cap Growth Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Core Plus Bond Fund</div></div><div style="margin-top: 0pt; margin-bottom: 1pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Credit Income Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Strategic Alpha Fund</div></div><div style="margin-top: 0pt; margin-bottom: 1pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Strategic Income Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Fixed Income Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Mirova Global Green Bond Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Global Allocation Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Mirova Global Sustainable Equity Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Global Bond Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Mirova International Sustainable Equity Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Global Growth Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Mirova U.S. Sustainable Equity Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Growth Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis Loomis Sayles Short Duration Income ETF</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles High Income Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis Oakmark Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles High Income Opportunities Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis Oakmark International Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Inflation Protected Securities Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis U.S. Equity Opportunities Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Institutional High Income Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis U.S. Equity Opportunities ETF</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Intermediate Duration Bond Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis Vaughan Nelson Mid Cap ETF</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Intermediate Municipal Bond Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis Vaughan Nelson Select ETF</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles International Growth Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Vaughan Nelson Mid Cap Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Investment Grade Bond Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Vaughan Nelson Select Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Investment Grade Fixed Income Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Vaughan Nelson Small Cap Value Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt"> <td style="vertical-align:bottom"><div style="font-size: 11pt; letter-spacing: 0px; top: 0px;display:inline;"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Limited Term Government and Agency Fund</div></div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"/></tr></table> <div style="margin-top: 12pt; margin-bottom: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-align: center;"><div style="font-weight:bold;display:inline;"><div style="font-style: normal; letter-spacing: 0px; top: 0px;display:inline;"><div style="font-style:italic;display:inline;">(each a “Fund” and together the “Funds”) </div></div></div></div> <div style="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Effective July 30, 2021, the names of the following entities are changed as set forth below and all references to such entities in the <div style="letter-spacing: 0px; top: 0px;display:inline;">summary </div>prospectuses, prospectuses and statements of additional information of the Funds are revised accordingly: </div> <div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt"> </div> <table cellpadding="0" cellspacing="0" style="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt;width:50%;border:0;margin:0 auto"> <tr style="font-size: 0px;"> <td style="width:51%"/> <td style="vertical-align:bottom;width:1%"/> <td style="width:48%"/></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:8pt"> <td style="vertical-align:bottom;white-space:nowrap"><div style="margin-top: 0pt; margin-bottom: 0pt; border-bottom: 1pt solid rgb(0, 0, 0); display: table-cell; font-size: 8pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Current Name</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; border-bottom: 1pt solid rgb(0, 0, 0); display: table-cell; font-size: 8pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">New Name</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt"> <td style="vertical-align:top"><div style="margin-top: 0pt; margin-bottom: 0pt; margin-left: 1em; text-indent: -1em; font-size: 10pt; font-family: &quot;Times New Roman&quot;; line-height: normal;">Natixis Advisors, L.P.</div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom;white-space:nowrap">Natixis Advisors, LLC</td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt"> <td style="vertical-align:top"><div style="margin-top: 0pt; margin-bottom: 0pt; margin-left: 1em; text-indent: -1em; font-size: 10pt; font-family: &quot;Times New Roman&quot;; line-height: normal;">Natixis Distribution, L.P.</div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom;white-space:nowrap">Natixis Distribution, LLC</td></tr></table> <div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-align: center;"><div style="font-weight:bold;display:inline;">LOOMIS SAYLES FUNDS I​​​​​​​ </div></div> <div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-align: center;"><div style="font-weight:bold;display:inline;">(each a “Trust” and collectively, the “Trusts”) </div></div> <div style="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;text-align:center"><div style="font-style: normal; letter-spacing: 0px; top: 0px;display:inline;"><div style="font-style:italic;display:inline;">Supplement dated August 4, 2021, to the Loomis Sayles Funds Summary Prospectuses, Prospectuses and Statements of <div style="letter-spacing: 0px; top: 0px;display:inline;">Additional </div>Information, each dated February 1, 2021 and May 1, 2021, <div style="letter-spacing: 0px; top: 0px;display:inline;">Natixis </div>Funds Summary Prospectuses, Prospectuses and Statements of Additional Information, each dated February 1, 2021, April 1, 2021, May 1, 2021, June 1, 2021 and the Natixis ETFs Summary Prospectuses, Prospectuses and Statements of Additional Information, each dated May 1, 2021, as may be <div style="letter-spacing: 0px; top: 0px;display:inline;">revised </div>or supplemented from time to time, for the following funds: </div></div></div> <div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt"> </div> <table cellpadding="0" cellspacing="0" style="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:11pt;width:100%;border:0;margin:0 auto"> <tr style="font-size: 0px;"> <td style="width:51%"/> <td style="vertical-align:bottom;width:1%"/> <td style="width:48%"/></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">AEW Global Focused Real Estate Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Securitized Asset Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">AlphaSimplex Global Alternatives Fund</div></div><div style="margin-top: 0pt; margin-bottom: 1pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">AlphaSimplex Managed Futures Strategy Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Senior Floating Rate and Fixed Income Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Gateway Fund</div></div><div style="margin-top: 0pt; margin-bottom: 1pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Gateway Equity Call Premium Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Small Cap Growth Fund</div></div><div style="margin-top: 0pt; margin-bottom: 1pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Small Cap Value Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Bond Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Small/Mid Cap Growth Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Core Plus Bond Fund</div></div><div style="margin-top: 0pt; margin-bottom: 1pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Credit Income Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Strategic Alpha Fund</div></div><div style="margin-top: 0pt; margin-bottom: 1pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Strategic Income Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Fixed Income Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Mirova Global Green Bond Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Global Allocation Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Mirova Global Sustainable Equity Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Global Bond Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Mirova International Sustainable Equity Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Global Growth Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Mirova U.S. Sustainable Equity Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Growth Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis Loomis Sayles Short Duration Income ETF</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles High Income Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis Oakmark Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles High Income Opportunities Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis Oakmark International Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Inflation Protected Securities Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis U.S. Equity Opportunities Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Institutional High Income Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis U.S. Equity Opportunities ETF</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Intermediate Duration Bond Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis Vaughan Nelson Mid Cap ETF</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Intermediate Municipal Bond Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis Vaughan Nelson Select ETF</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles International Growth Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Vaughan Nelson Mid Cap Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Investment Grade Bond Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Vaughan Nelson Select Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Investment Grade Fixed Income Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Vaughan Nelson Small Cap Value Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt"> <td style="vertical-align:bottom"><div style="font-size: 11pt; letter-spacing: 0px; top: 0px;display:inline;"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Limited Term Government and Agency Fund</div></div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"/></tr></table> <div style="margin-top: 12pt; margin-bottom: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-align: center;"><div style="font-weight:bold;display:inline;"><div style="font-style: normal; letter-spacing: 0px; top: 0px;display:inline;"><div style="font-style:italic;display:inline;">(each a “Fund” and together the “Funds”) </div></div></div></div> <div style="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Effective July 30, 2021, the names of the following entities are changed as set forth below and all references to such entities in the <div style="letter-spacing: 0px; top: 0px;display:inline;">summary </div>prospectuses, prospectuses and statements of additional information of the Funds are revised accordingly: </div> <div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt"> </div> <table cellpadding="0" cellspacing="0" style="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt;width:50%;border:0;margin:0 auto"> <tr style="font-size: 0px;"> <td style="width:51%"/> <td style="vertical-align:bottom;width:1%"/> <td style="width:48%"/></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:8pt"> <td style="vertical-align:bottom;white-space:nowrap"><div style="margin-top: 0pt; margin-bottom: 0pt; border-bottom: 1pt solid rgb(0, 0, 0); display: table-cell; font-size: 8pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Current Name</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; border-bottom: 1pt solid rgb(0, 0, 0); display: table-cell; font-size: 8pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">New Name</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt"> <td style="vertical-align:top"><div style="margin-top: 0pt; margin-bottom: 0pt; margin-left: 1em; text-indent: -1em; font-size: 10pt; font-family: &quot;Times New Roman&quot;; line-height: normal;">Natixis Advisors, L.P.</div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom;white-space:nowrap">Natixis Advisors, LLC</td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt"> <td style="vertical-align:top"><div style="margin-top: 0pt; margin-bottom: 0pt; margin-left: 1em; text-indent: -1em; font-size: 10pt; font-family: &quot;Times New Roman&quot;; line-height: normal;">Natixis Distribution, L.P.</div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom;white-space:nowrap">Natixis Distribution, LLC</td></tr></table> <div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-align: center;"><div style="font-weight:bold;display:inline;">LOOMIS SAYLES FUNDS I​​​​​​​ </div></div> <div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-align: center;"><div style="font-weight:bold;display:inline;">(each a “Trust” and collectively, the “Trusts”) </div></div> <div style="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman;text-align:center"><div style="font-style: normal; letter-spacing: 0px; top: 0px;display:inline;"><div style="font-style:italic;display:inline;">Supplement dated August 4, 2021, to the Loomis Sayles Funds Summary Prospectuses, Prospectuses and Statements of <div style="letter-spacing: 0px; top: 0px;display:inline;">Additional </div>Information, each dated February 1, 2021 and May 1, 2021, <div style="letter-spacing: 0px; top: 0px;display:inline;">Natixis </div>Funds Summary Prospectuses, Prospectuses and Statements of Additional Information, each dated February 1, 2021, April 1, 2021, May 1, 2021, June 1, 2021 and the Natixis ETFs Summary Prospectuses, Prospectuses and Statements of Additional Information, each dated May 1, 2021, as may be <div style="letter-spacing: 0px; top: 0px;display:inline;">revised </div>or supplemented from time to time, for the following funds: </div></div></div> <div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt"> </div> <table cellpadding="0" cellspacing="0" style="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:11pt;width:100%;border:0;margin:0 auto"> <tr style="font-size: 0px;"> <td style="width:51%"/> <td style="vertical-align:bottom;width:1%"/> <td style="width:48%"/></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">AEW Global Focused Real Estate Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Securitized Asset Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">AlphaSimplex Global Alternatives Fund</div></div><div style="margin-top: 0pt; margin-bottom: 1pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">AlphaSimplex Managed Futures Strategy Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Senior Floating Rate and Fixed Income Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Gateway Fund</div></div><div style="margin-top: 0pt; margin-bottom: 1pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Gateway Equity Call Premium Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Small Cap Growth Fund</div></div><div style="margin-top: 0pt; margin-bottom: 1pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Small Cap Value Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Bond Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Small/Mid Cap Growth Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Core Plus Bond Fund</div></div><div style="margin-top: 0pt; margin-bottom: 1pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Credit Income Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Strategic Alpha Fund</div></div><div style="margin-top: 0pt; margin-bottom: 1pt; font-size: 11pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Loomis Sayles Strategic Income Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Fixed Income Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Mirova Global Green Bond Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Global Allocation Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Mirova Global Sustainable Equity Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Global Bond Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Mirova International Sustainable Equity Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Global Growth Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Mirova U.S. Sustainable Equity Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Growth Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis Loomis Sayles Short Duration Income ETF</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles High Income Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis Oakmark Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles High Income Opportunities Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis Oakmark International Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Inflation Protected Securities Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis U.S. Equity Opportunities Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Institutional High Income Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis U.S. Equity Opportunities ETF</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Intermediate Duration Bond Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis Vaughan Nelson Mid Cap ETF</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Intermediate Municipal Bond Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Natixis Vaughan Nelson Select ETF</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles International Growth Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Vaughan Nelson Mid Cap Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Investment Grade Bond Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Vaughan Nelson Select Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:11pt"> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Investment Grade Fixed Income Fund</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Vaughan Nelson Small Cap Value Fund</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt"> <td style="vertical-align:bottom"><div style="font-size: 11pt; letter-spacing: 0px; top: 0px;display:inline;"><div style="letter-spacing: 0px; top: 0px;display:inline;"><div style="font-weight:bold;display:inline;">Loomis Sayles Limited Term Government and Agency Fund</div></div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"/></tr></table> <div style="margin-top: 12pt; margin-bottom: 0pt; font-size: 10pt; font-family: &quot;Times New Roman&quot;; text-align: center;"><div style="font-weight:bold;display:inline;"><div style="font-style: normal; letter-spacing: 0px; top: 0px;display:inline;"><div style="font-style:italic;display:inline;">(each a “Fund” and together the “Funds”) </div></div></div></div> <div style="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Effective July 30, 2021, the names of the following entities are changed as set forth below and all references to such entities in the <div style="letter-spacing: 0px; top: 0px;display:inline;">summary </div>prospectuses, prospectuses and statements of additional information of the Funds are revised accordingly: </div> <div style="font-size:12pt;margin-top:0pt;margin-bottom:0pt"> </div> <table cellpadding="0" cellspacing="0" style="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt;width:50%;border:0;margin:0 auto"> <tr style="font-size: 0px;"> <td style="width:51%"/> <td style="vertical-align:bottom;width:1%"/> <td style="width:48%"/></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:8pt"> <td style="vertical-align:bottom;white-space:nowrap"><div style="margin-top: 0pt; margin-bottom: 0pt; border-bottom: 1pt solid rgb(0, 0, 0); display: table-cell; font-size: 8pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">Current Name</div></div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom"><div style="margin-top: 0pt; margin-bottom: 0pt; border-bottom: 1pt solid rgb(0, 0, 0); display: table-cell; font-size: 8pt; font-family: &quot;Times New Roman&quot;; line-height: normal;"><div style="font-weight:bold;display:inline;">New Name</div></div></td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt"> <td style="vertical-align:top"><div style="margin-top: 0pt; margin-bottom: 0pt; margin-left: 1em; text-indent: -1em; font-size: 10pt; font-family: &quot;Times New Roman&quot;; line-height: normal;">Natixis Advisors, L.P.</div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom;white-space:nowrap">Natixis Advisors, LLC</td></tr> <tr style="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt"> <td style="vertical-align:top"><div style="margin-top: 0pt; margin-bottom: 0pt; margin-left: 1em; text-indent: -1em; font-size: 10pt; font-family: &quot;Times New Roman&quot;; line-height: normal;">Natixis Distribution, L.P.</div></td> <td style="vertical-align:bottom">  </td> <td style="vertical-align:bottom;white-space:nowrap">Natixis Distribution, LLC</td></tr></table> 2021-08-04 2021-08-04 2021-05-01