# EDGAR Filing Document

**Accession Number:** 0000924727
**File Stem:** 0001104659-26-035731
**Filing Date:** 2026-3
**Character Count:** 2572
**Document Hash:** af49a4959698b9e3cdb0f881743bf9ee
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-035731.hdr.sgml**: 20260327

**ACCESSION NUMBER**: 0001104659-26-035731

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260327

**DATE AS OF CHANGE**: 20260327

**EFFECTIVENESS DATE**: 20260327

**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:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-79858
- **FILM NUMBER:** 26801228

**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 Global Equity ETF (Series ID: S000083872)

---

|  |  |  |
|:---|:---|:---|
| Class Name            | Ticker Symbol | Class ID   |
| FPA Global Equity ETF | FPAG          | C000247942 |

---

## Series and Classes Contracts Data

### FPA Global Equity ETF (Series ID: S000083872)

| Class ID   | Class Name            | Ticker Symbol   |
|:---|:---|:---|
| C000247942 | FPA Global Equity ETF | FPAG            |

**FPA Global Equity ETF**

**(Ticker: FPAG)**

 ****

*A series of Investment Managers Series Trust III (the "Trust")*

**Supplement dated March 27, 2026 to the Statement of Additional Information ("SAI") dated January 31, 2026.**

*Effective immediately, the "Portfolio Managers Fund Ownership" section on page 55 of the SAI is replaced with the following:* 

***Portfolio Managers Fund Ownership****.* As of March 15, 2026, the portfolio managers owned shares of the Fund as set forth in the table below. The following are the ranges: none, $1-$10,000, $10,001-$50,000, $50,001-$100,000, $100,001-$500,000, $500,001-$1,000,000, or over $1,000,000.

---

| | |
|:---|:---|
| **Name of Portfolio Manager** | **Dollar Range of Equity Securities in the <br> Fund** |
| Brian A. Selmo | Over $1,000,000 |
| Mark Landecker | Over $1,000,000 |

---

***Please file this Supplement with your records****.*