# EDGAR Filing Document

**Accession Number:** 0001318342
**File Stem:** 0001213900-26-064718
**Filing Date:** 2026-6
**Character Count:** 6828
**Document Hash:** da02c4be22c6ca79db0d0be0b95c9fa9
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-26-064718.hdr.sgml**: 20260603

**ACCESSION NUMBER**: 0001213900-26-064718

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260603

**DATE AS OF CHANGE**: 20260603

**EFFECTIVENESS DATE**: 20260603

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Investment Managers Series Trust
- **CENTRAL INDEX KEY:** 0001318342

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-122901
- **FILM NUMBER:** 261060529

**BUSINESS ADDRESS:**
- **STREET 1:** 235 WEST GALENA STREET
- **CITY:** MILWAUKEE
- **STATE:** WI
- **ZIP:** 53212
- **BUSINESS PHONE:** 626-914-4141

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

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Claymore Trust
- **DATE OF NAME CHANGE:** 20050603

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Claymore Equity Trust
- **DATE OF NAME CHANGE:** 20050218

## Series and Classes Contracts Data

### AAM/HIMCO Short Duration Fund (Series ID: S000045893)

---

|  |  |  |
|:---|:---|:---|
| Class Name | Ticker Symbol | Class ID   |
| Class A    | ASDAX         | C000142996 |
| Class C    | ASDCX         | C000142997 |
| Class I    | ASDIX         | C000142998 |

---

## Series and Classes Contracts Data

### AAM/HIMCO Short Duration Fund (Series ID: S000045893)

| Class ID   | Class Name   | Ticker Symbol   |
|:---|:---|:---|
| C000142996 | Class A      | ASDAX           |
| C000142997 | Class C      | ASDCX           |
| C000142998 | Class I      | ASDIX           |

**AAM/HIMCO Short Duration Fund**

Class A Shares (Ticker Symbol: ASDAX)

Class C Shares (Ticker Symbol: ASDCX)

Class I Shares (Ticker Symbol: ASDIX)

***A series of Investment Managers Series Trust***

**Supplement dated June 3, 2026, to the** 

**Prospectus and Statement of Additional Information ("SAI"),** 

**each dated October 31, 2025.**

 

*Brian DaCorte, CFA, has been added as a portfolio manager to the AAM/HIMCO Short Duration Fund (the "Fund"). Accordingly, effective immediately, the Prospectus and SAI are updated as follows:*

 

*The section "Portfolio Managers – Summary Section" of the Prospectus is deleted in its entirety and replaced with the following:* 

**Portfolio Managers**

The following portfolio managers are jointly and primarily responsible for the day-to-day management of the Fund's portfolio*.*

---

| | |
|:---|:---|
| **Name and Title (HIMCO)** | **Managed the Fund Since:** |
| Robert Crusha, CFA, Senior Managing Director and Senior Portfolio Manager | June 30, 2014 |
| Shannon Carbray, CFA, Managing Director and Senior Portfolio Manager | June 30, 2014 |
| Brian DaCorte, CFA, Senior Investment Analyst | May 5, 2026 |

---

*The first sentence under the heading entitled "Management of the Fund – Portfolio Managers" of the Prospectus is deleted in its entirety and replaced with the following:*

Mr. Crusha, Ms. Carbray and Mr. DaCorte are jointly and primarily responsible for the day-to-day management of the Fund's portfolio*.*

 

*The following is added under the heading entitled "Management of the Fund – Portfolio Managers" of the Prospectus:*

**Brian DaCorte, CFA** – Brian is a Senior Investment Analyst with roles and responsibilities across HIMCO's Portfolio Management and Client Management teams. DaCorte supports the day-to-day management of several of HIMCO's third-party client portfolios, as well as various client management and business development efforts. Prior to joining the group, he was a Risk Manager in the firm's Asset Liability Management Team. DaCorte joined HIMCO in 2018 and earned his BS in Finance from the University of Connecticut.

 

*The following is added under the heading entitled "Other Accounts Managed by the Portfolio Managers" of the SAI:*

 

As of May 26, 2026, information on other accounts managed by Brian DaCorte, CFA, is as follows.

---

| | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|
|  | **Registered**<br> **Investment Companies** | **Registered**<br> **Investment Companies** | **Other Pooled**<br> **Investment Vehicles** | **Other Pooled**<br> **Investment Vehicles** | **Other Accounts** | **Other Accounts** |
| **Portfolio Manager** | **Number of<br> Accounts** | **Total Assets<br> (in millions)** | **Number of<br> Accounts** | **Total Assets**<br> **(in millions)** | **Number of<br> Accounts** | **Total Assets**<br> **(in millions)** |
| Brian DaCorte, CFA | 0 | $0.00 | 0 | $0.00 | 12 | $1084.11 |

---

---

| | | | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
|  | | **Number of Accounts with Advisory Fee Based on Performance** | **Number of Accounts with Advisory Fee Based on Performance** | **Number of Accounts with Advisory Fee Based on Performance** | **Number of Accounts with Advisory Fee Based on Performance** | **Number of Accounts with Advisory Fee Based on Performance** | **Number of Accounts with Advisory Fee Based on Performance** | **Number of Accounts with Advisory Fee Based on Performance** | **Number of Accounts with Advisory Fee Based on Performance** | **Number of Accounts with Advisory Fee Based on Performance** | **Number of Accounts with Advisory Fee Based on Performance** |
|  | | **Registered**<br> **Investment Companies** | **Registered**<br> **Investment Companies** | **Registered**<br> **Investment Companies** | **Other Pooled**<br> **Investment Vehicles** | **Other Pooled**<br> **Investment Vehicles** | **Other Pooled**<br> **Investment Vehicles** | **Other Accounts** | **Other Accounts** | **Other Accounts** | **Other Accounts** |
| **Portfolio Manager** | **Portfolio Manager** | **Number of<br> Accounts** | **Total Assets**<br> **(in millions)** | **Total Assets**<br> **(in millions)** | **Number of<br> Accounts** | **Number of<br> Accounts** | **Total Assets**<br> **(in millions)** | **Number of<br> Accounts** | **Number of<br> Accounts** | **Number of<br> Accounts** | **Total Assets**<br> **(in millions)** |
| Brian DaCorte, CFA | 0 | 0 | 0 | $0.00 | 0 | $0.00 | $0.00 | $0.00 | 0 | $0.00 | $0.00 |

---

*The following is added under the heading entitled "Ownership of the Funds by the Portfolio Managers" of the SAI:*

 

The following chart sets forth the dollar range of Fund shares owned by Brian DaCorte, CFA, as of May 26, 2026.

 

---

| | |
|:---|:---|
|  | **Dollar Range of Securities in the Fund<br> (None, $1-$10,000, $10,001-$50,000, $50,001-$100,000,<br> $100,001 - $500,000, $500,001 - $1,000,000, Over $1,000,000)** |
| **Name of Portfolio Manager** | |
| Brian DaCorte, CFA | $1 - $10000 |

---

 ****

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

 ****