Prospectus by Investment Company - Form 497

LOOMIS SAYLES FUNDS II

Supplement dated October 18, 2024 to the Natixis Funds Statement of Additional Information, dated May 1, 2024, as may be revised or supplemented from time to time, for the following funds:

Loomis Sayles High Income Fund		Loomis Sayles Strategic Income Fund
Loomis Sayles International Growth Fund		Natixis Oakmark Fund
Loomis Sayles Investment Grade Bond Fund		Natixis Oakmark International Fund
Loomis Sayles Strategic Alpha Fund		Natixis U.S. Equity Opportunities Fund

Effective immediately, the table under the third paragraph in the section "Portfolio Holdings Information" has been amended to include the following:

Entity		Fund(s)		Holdings		Frequency		Purpose
Fidelity National Information Services, Inc. ("FIS") XSPrisa		Certain Funds		Full portfolio holdings		Daily		Corporate action services
Intersystems		Certain Funds		Full portfolio holdings		Daily		Database management

Effective immediately, the information for Bloomberg, Confluence Technologies, Inc. and Gresham Technologies plc in the table under the third paragraph in the section "Portfolio Holdings Information" is amended and restated as follows:

Entity		Fund(s)		Holdings		Frequency		Purpose
Bloomberg		All Funds		Full portfolio holdings		Daily, provided next business day		Performing attribution analysis and certain portfolio analytics, pricing vendor services and risk management
Confluence Technologies, Inc.		All Funds		Full portfolio holdings		Quarterly, or more frequently as needed		Performing certain functions related to quarterly Form N-PORT filings and production of shareholder reports
Gresham Technologies plc		All Funds		Full portfolio holdings		Daily		Performing certain electronic reconciliations of portfolio holdings of the Funds

Supplement dated October 18, 2024 to the Loomis Sayles Funds Statements of Additional Information, each dated February 1. 2024, and Natixis Funds Statements of Additional Information each dated February 1, 2024, April 1, 2024, May 1, 2024 and June 1, 2024, as may be revised or supplemented from time to time, for the following funds:

AEW Global Focused Real Estate Fund		Loomis Sayles Small Cap Value Fund
Loomis Sayles Core Plus Bond Fund		Loomis Sayles Small/Mid Cap Growth Fund
Loomis Sayles Fixed Income Fund		Natixis Target Retirement 2015 Fund®
Loomis Sayles Global Allocation Fund		Natixis Target Retirement 2020 Fund®
Loomis Sayles Global Bond Fund		Natixis Target Retirement 2025 Fund®
Loomis Sayles Global Growth Fund		Natixis Target Retirement 2030 Fund®
Loomis Sayles Growth Fund		Natixis Target Retirement 2035 Fund®
Loomis Sayles High Income Opportunities Fund		Natixis Target Retirement 2040 Fund®
Loomis Sayles Inflation Protected Securities Fund		Natixis Target Retirement 2045 Fund®
Loomis Sayles Institutional High Income Fund		Natixis Target Retirement 2050 Fund®
Loomis Sayles Intermediate Duration Bond Fund		Natixis Target Retirement 2055 Fund®
Loomis Sayles Limited Term Government and Agency Fund		Natixis Target Retirement 2060 Fund®
Loomis Sayles Securitized Asset Fund		Natixis Target Retirement 2065 Fund®
Loomis Sayles Senior Floating Rate and Fixed Income Fund		Vaughan Nelson Select Fund
Loomis Sayles Small Cap Growth Fund

Effective immediately, the information for Confluence Technologies, Inc. and Gresham Technologies plc in the table under the third paragraph in the section "Portfolio Holdings Information" is amended and restated as follows:

Entity		Fund(s)		Holdings		Frequency		Purpose
Confluence Technologies, Inc.		All Funds		Full portfolio holdings		Quarterly, or more frequently as needed		Performing certain functions related to quarterly Form N-PORT filings and production of shareholder reports
Gresham Technologies plc		All Funds		Full portfolio holdings		Daily		Performing certain electronic reconciliations of portfolio holdings of the Funds

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