NATIXIS FUNDS

Supplement dated May 26, 2020 to the Natixis Funds Prospectuses dated February 1, 2020, April 1, 2020, May 1, 2020 and June 1, 2019 (each a “Prospectus”), as may be revised or supplemented from time to time, for the following funds:

AEW Global Focused Real Estate Fund	Loomis Sayles Limited Term Government and Agency Fund
AlphaSimplex Global Alternatives Fund	Loomis Sayles Senior Floating Rate and Fixed Income  Fund
AlphaSimplex Managed Futures Strategy Fund	Loomis Sayles Strategic Alpha Fund
AlphaSimplex Multi-Asset Fund	Loomis Sayles Strategic Income Fund
AlphaSimplex Tactical U.S. Market Fund	Mirova Global Green Bond Fund
Gateway Equity Call Premium Fund	Mirova Global Sustainable Equity Fund
Gateway Fund	Mirova International Sustainable Equity Fund
Loomis Sayles Core Plus Bond Fund	Natixis Oakmark Fund
Loomis Sayles Global Allocation Fund	Natixis Oakmark International Fund
Loomis Sayles Global Growth Fund	Natixis U.S. Equity Opportunities Fund
Loomis Sayles Growth Fund	Vaughan Nelson Small Cap Value Fund
Loomis Sayles High Income Fund	Vaughan Nelson Value Opportunity Fund
Loomis Sayles Intermediate Duration Bond Fund	Vaughan Nelson Select Fund
Loomis Sayles Intermediate Municipal Bond Fund
Loomis Sayles Investment Grade Bond Fund

Effective immediately, Appendix A is renamed “Appendix A – Intermediary Specific Information”.

Effective immediately, the following information is added to Appendix A – Intermediary Specific Information to each Prospectus:

Edward Jones

Clients of Edward Jones (also referred to as “shareholders”) purchasing fund shares on the Edward Jones commission and fee-based platforms are eligible only for the following sales charge discounts (also referred to as “breakpoints”) and waivers, which can differ from breakpoints and waivers described elsewhere in this Prospectus or in the SAI or through another broker-dealer. In all instances, it is the shareholder’s responsibility to inform Edward Jones at the time of purchase of any relationship, holdings of Natixis Funds or other facts qualifying the purchaser for breakpoints or waivers. Edward Jones can ask for documentation of such circumstance.

Breakpoints

Rights of Accumulation (ROA)

• The applicable sales charge on a purchase of Class A shares is determined by taking into account all share classes (except any money market funds and retirement plan share classes) of the Natixis Funds held by the shareholder or in an account grouped by Edward Jones with other accounts for the purpose of providing certain pricing considerations (“pricing groups”). This includes all share classes held on the Edward Jones platform and/or held on another platform. The inclusion of eligible fund family assets in the rights of accumulation calculation is dependent on the shareholder notifying his or her financial advisor of such assets at the time of calculation.

• ROA is determined by calculating the higher of cost or market value (current shares x NAV).

Letter of Intent (LOI)

• Through a LOI, shareholders can receive the sales charge and breakpoint discounts for purchases shareholders intend to make over a 13-month period from the date Edward Jones receives the LOI. The LOI is determined by calculating the higher of cost or market value of qualifying holdings at LOI initiation in combination with the value that the shareholder intends to buy over a 13-month period to calculate the front-end sales charge and any breakpoint discounts. Each purchase the shareholder makes during that 13-month period will receive the sales charge and breakpoint discount that applies to the total amount. The inclusion of eligible fund family assets in the LOI calculation is dependent on the shareholder notifying his or her financial advisor of such assets at the time of calculation. Purchases made before the LOI is received by Edward Jones are not covered under the LOI and will not reduce the sales charge previously paid. Sales charges will be adjusted if LOI is not met.

Sales Charge Waivers

Sales charges are waived for the following shareholders and in the following situations:

• Associates of Edward Jones and its affiliates and their family members who are in the same pricing group (as determined by Edward Jones under its policies and procedures) as the associate. This waiver will continue for the remainder of the associate’s life if the associate retires from Edward Jones in good-standing and remains in good-standing pursuant to Edward Jones’ policies and procedures.

• Shares purchased in an Edward Jones fee-based program.

• Shares purchased through reinvestment of capital gains distributions and dividend reinvestment.

• Shares purchased from the proceeds of redeemed shares of the same fund family so long as the following conditions are met: 1) the proceeds are from the sale of shares within 60 days of the purchase, and 2) the sale and purchase are made in the same share class and the same account or the purchase is made in an individual retirement account with proceeds from liquidations in a non-retirement account.

• Shares exchanged into Class A shares from another share class so long as the exchange is into the same fund and was initiated at the discretion of Edward Jones. Edward Jones is responsible for any remaining CDSC due to the fund company, if applicable. Any future purchases are subject to the applicable sales charge as disclosed in the prospectus.

• Exchanges from Class C shares to Class A shares of the same fund, generally, in the 84^th month following the anniversary of the purchase date or earlier at the discretion of Edward Jones.

Contingent Deferred Sales Charge (CDSC) Waivers

If the shareholder purchases shares that are subject to a CDSC and those shares are redeemed before the CDSC is expired, the shareholder is responsible to pay the CDSC except in the following conditions:

• The death or disability of the shareholder

• Systematic withdrawals with up to 10% per year of the account value

• Return of excess contributions from an Individual Retirement Account (IRA)

• Shares sold as part of a required minimum distribution for IRA and retirement accounts if the redemption is taken in or after the year the shareholder reaches qualified age based on applicable IRS regulations

• Shares sold to pay Edward Jones fees or costs in such cases where the transaction is initiated by Edward Jones

• Shares exchanged in an Edward Jones fee-based program

• Shares acquired through NAV reinstatement

Other Important Information

1.1 Minimum Purchase Amounts

• $250 initial purchase minimum

• $50 subsequent purchase minimum

1.2 Minimum Balances

• Edward Jones has the right to redeem at its discretion fund holdings with a balance of $250 or less. The following are examples of accounts that are not included in this policy:

• A fee-based account held on an Edward Jones platform

• A 529 account held on an Edward Jones platform

• An account with an active systematic investment plan or letter of intent (LOI)

1.3 Changing Share Classes

• At any time it deems necessary, Edward Jones has the authority to exchange at NAV a shareholder’s holdings in a fund to Class A shares.