# EDGAR Filing Document

**Accession Number:** 0000770540
**File Stem:** 0001193125-26-199513
**Filing Date:** 2026-5
**Character Count:** 4323
**Document Hash:** 9973b11535d2c2318148c14c3f224246
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-199513.hdr.sgml**: 20260501

**ACCESSION NUMBER**: 0001193125-26-199513

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260501

**DATE AS OF CHANGE**: 20260501

**EFFECTIVENESS DATE**: 20260501

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Natixis Funds Trust I
- **CENTRAL INDEX KEY:** 0000770540

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 002-98326
- **FILM NUMBER:** 26929336

**BUSINESS ADDRESS:**
- **STREET 1:** 888 BOYLSTON STREET
- **STREET 2:** 8TH FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199
- **BUSINESS PHONE:** 617-449-2810

**MAIL ADDRESS:**
- **STREET 1:** 888 BOYLSTON STREET
- **STREET 2:** 8TH FLOOR
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02199

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** IXIS Advisor Funds Trust I
- **DATE OF NAME CHANGE:** 20050502

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** CDC NVEST FUNDS TRUST I
- **DATE OF NAME CHANGE:** 20010503

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** NVEST FUNDS TRUST I
- **DATE OF NAME CHANGE:** 20000202

## Series and Classes Contracts Data

### Loomis Sayles Core Plus Bond Fund (Series ID: S000006660)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class A    | NEFRX         | C000018168 |
| Class C    | NECRX         | C000018170 |
| Class Y    | NERYX         | C000018171 |
| Class N    | NERNX         | C000125481 |

---

## Series and Classes Contracts Data

### Loomis Sayles Core Plus Bond Fund (Series ID: S000006660)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000018168 | Class A      | NEFRX           |
| C000018170 | Class C      | NECRX           |
| C000018171 | Class Y      | NERYX           |
| C000125481 | Class N      | NERNX           |

*Supplement dated May 1, 2026 to the Loomis Sayles Funds Statements of Additional Information, dated February 1, 2026, Natixis Funds Statements of Additional Information, dated February 1, 2026, and April 1, 2026, and June 1, 2025, as may be revised or supplemented from time to time, for the following funds:* 

---

| | |
|:---|:---|
| **AEW Global Focused Real Estate Fund** | **Loomis Sayles Institutional High Income Fund** |
| **Loomis Sayles Core Plus Bond Fund** | **Loomis Sayles Intermediate Duration Bond Fund** |
| **Loomis Sayles Fixed Income Fund** | **Loomis Sayles Limited Term Government and Agency Fund** |
| **Loomis Sayles Global Allocation Fund** | **Loomis Sayles Securitized Asset Fund** |
| **Loomis Sayles Global Bond Fund** | **Loomis Sayles Senior Floating Rate and Fixed Income Fund** |
| **Loomis Sayles Global Growth Fund** | **Loomis Sayles Small Cap Growth Fund** |
| **Loomis Sayles Growth Fund** | **Loomis Sayles Small Cap Value Fund** |
| **Loomis Sayles High Income Opportunities Fund** | **Loomis Sayles Small/Mid Cap Growth Fund** |
| **Loomis Sayles Inflation Protected Securities Fund** | **Vaughan Nelson Select Fund** |

---

***Effective May 1, 2026, Peter J. Smail will retire from the Board of Trustees. Accordingly, effective May 1, 2026, all references to Mr. Smail and corresponding disclosure related to Mr. Smail are hereby removed from the Statements of Additional Information.***

***Accordingly, the table in the sub-section "Trustees and Officers" within the section "Management of the Trust(s)" is hereby updated to reflect the above stated change. In addition, the list of the members of the Audit Committee, Contract Review Committee and Governance Committee in the sub-section "Leadership and Structure of the Board" within the section "Management of the Trust(s)" is hereby replaced with the following:***

---

| | | |
|:---|:---|:---|
| **Audit Committee** | **Contract Review Committee** | **Governance Committee** |
| Richard A. Goglia – Chairperson | Maureen B. Mitchell – Chairperson | Martin T. Meehan – Chairperson |
| James P. Palermo | Edmond J. English | James P. Palermo |
| Cynthia L. Walker | Martin T. Meehan | Kirk A. Sykes |
|  | Kirk A. Sykes | Cynthia L. Walker |

---

As Chairperson of the Board, Mr. Sirri is an *ex officio* member of each Committee.