# EDGAR Filing Document

**Accession Number:** 0000917469
**File Stem:** 0001133228-26-008015
**Filing Date:** 2026-5
**Character Count:** 2711
**Document Hash:** fd29301a362c402f20c301c5e1719ba7
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001133228-26-008015.hdr.sgml**: 20260505

**ACCESSION NUMBER**: 0001133228-26-008015

**CONFORMED SUBMISSION TYPE**: 497J

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260505

**DATE AS OF CHANGE**: 20260505

**EFFECTIVENESS DATE**: 20260505

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** LOOMIS SAYLES FUNDS I
- **CENTRAL INDEX KEY:** 0000917469

**ORGANIZATION NAME:**
- **EIN:** 043219179
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 0930

**FILING VALUES:**
- **FORM TYPE:** 497J
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-22931
- **FILM NUMBER:** 26942794

**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:** LOOMIS SAYLES FUNDS II
- **DATE OF NAME CHANGE:** 20031119

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** LOOMIS SAYLES INVESTMENT TRUST
- **DATE OF NAME CHANGE:** 20031015

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** LOOMIS SAYLES FUNDS I
- **DATE OF NAME CHANGE:** 20030718

## Series and Classes Contracts Data

### Loomis Sayles Income Fund (Series ID: S000006638)

| Class ID   | Class Name          | Ticker Symbol   |
|:---|:---|:---|
| C000018122 | Institutional Class | LSBDX           |
| C000018123 | Retail Class        | LSBRX           |
| C000018124 | Admin Class         | LBFAX           |
| C000125493 | Class N             | LSBNX           |

### Loomis Sayles Investment Grade Fixed Income Fund (Series ID: S000006646)

| Class ID   | Class Name          | Ticker Symbol   |
|:---|:---|:---|
| C000018133 | Institutional Class | LSIGX           |

**LOOMIS SAYLES FUNDS I**

May 5, 2026

<u>VIA EDGAR</u>

U.S. Securities and Exchange Commission

100 F Street, NE

Washington, DC 20549<br>

Re: Loomis Sayles Funds I <br> <u>(File Nos.: 333-22931 and 811-08282)</u>

Dear Sir or Madam:

Pursuant to Rule 497(j) of the Securities Act of 1933, as amended, I hereby certify that the Prospectus and Statement of Additional Information, each dated May 1, 2026, for the Loomis Sayles Income Fund and Loomis Sayles Investment Grade Fixed Income Fund, each a series of Loomis Sayles Funds I, do not differ from that contained in Post-Effective Amendment No. 85 that was filed electronically on April 29, 2026.

Please direct any questions or comments on the enclosed materials to me at (617) 449-2818.

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| |
|:---|
| Very truly yours, |
| /s/ Jan Ryu Koo |
| Jan Ryu Koo |
| Assistant Secretary |

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