# EDGAR Filing Document

**Accession Number:** 0000924727
**File Stem:** 0001104659-26-009563
**Filing Date:** 2026-2
**Character Count:** 2523
**Document Hash:** 199753987b08a41042a79e71c0e13b82
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-009563.hdr.sgml**: 20260203

**ACCESSION NUMBER**: 0001104659-26-009563

**CONFORMED SUBMISSION TYPE**: 497J

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260203

**DATE AS OF CHANGE**: 20260203

**EFFECTIVENESS DATE**: 20260203

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Investment Managers Series Trust III
- **CENTRAL INDEX KEY:** 0000924727

**ORGANIZATION NAME:**
- **EIN:** 043236699
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 497J
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-79858
- **FILM NUMBER:** 26590812

**BUSINESS ADDRESS:**
- **STREET 1:** 235 W. GALENA STREET
- **CITY:** MILWAUKEE
- **STATE:** WI
- **ZIP:** 53212
- **BUSINESS PHONE:** 626-385-5777

**MAIL ADDRESS:**
- **STREET 1:** 235 W. GALENA STREET
- **CITY:** MILWAUKEE
- **STATE:** WI
- **ZIP:** 53212

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** FPA FUNDS TRUST
- **DATE OF NAME CHANGE:** 20021028

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** UAM FUNDS TRUST
- **DATE OF NAME CHANGE:** 19951101

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** REGIS FUND II
- **DATE OF NAME CHANGE:** 19940606

## Series and Classes Contracts Data

### FPA New Income Fund (Series ID: S000080693)

| Class ID   | Class Name          | Ticker Symbol   |
|:---|:---|:---|
| C000243216 | Institutional Class | FPNIX           |
| C000249814 | Investor Class      | FPNRX           |

**<u>Investment Manager Series Trust III</u>**

**235 W. Galena Street**

**Milwaukee, Wisconsin 53212**

February 3, 2026

**VIA EDGAR TRANSMISSION**

U.S. Securities and Exchange Commission

Division of Investment Management

100 "F" Street, N.E.

Washington, DC 20549

Re: Investment Managers Series Trust III (the "Trust") (File Nos. 033-79858 and 811-08544) on behalf of the FPA New Income Fund

Dear Sir or Madam:

Pursuant to Rule 497(j) under the Securities Act of 1933, as amended, please accept this letter as certification that the Prospectus and Statement of Additional Information for the FPA New Income Fund, a series of the Trust, does not differ from that contained in Post-Effective Amendment No. 139 to the Trust's Registration Statement on Form N-1A which was filed electronically on January 26, 2026.

If you have any questions or require further information, please contact me at (626) 385-5777 or <u>diane.drake@mfac-ca.com</u>.

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| |
|:---|
| Sincerely, |
| /s/ Diane J. Drake |
| Diane J. Drake |
| Secretary |

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