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
Summary Prospectus 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 Summary Prospectus is updated as follows:
The section “Portfolio Managers” of the Summary 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 |
Please file this Supplement with your records.