AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON MARCH 26, 2026
REGISTRATION NOS. 033-79858
811-08544
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM N-1A
| REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933 | ☐ | |
| PRE-EFFECTIVE AMENDMENT NO. | ☐ | |
| POST-EFFECTIVE AMENDMENT NO. 144 | ☒ | |
| AND/OR | ||
| REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940 | ☐ | |
| AMENDMENT NO. 145 | ☒ |
INVESTMENT MANAGERS SERIES TRUST III
(Exact Name of Registrant as Specified in Charter)
235 W. Galena Street
Milwaukee, WI 53212
(Address of Principal Executive Offices, including Zip Code)
Registrant's Telephone Number, Including Area Code: (626) 385-5777
Diane J. Drake
Mutual Fund Administration, LLC
2220 E. Route 66, Suite 226
Glendora, California 91740
(Name and Address of Agent for Service)
COPIES TO:
Laurie Anne Dee
Morgan, Lewis & Bockius LLP
600 Anton Boulevard, Suite 1800
Costa Mesa, California 92626
It is proposed that this filing will become effective (check appropriate box):
| ☐ | immediately upon filing pursuant to paragraph (b) of Rule 485; or | |
| ☒ | on April 10, 2026, pursuant to paragraph (b) of Rule 485; or | |
| ☐ | 60 days after filing pursuant to paragraph (a)(1) of Rule 485; | |
| ☐ | on _________ pursuant to paragraph (a)(1) of Rule 485; or | |
| ☐ | 75 days after filing pursuant to paragraph (a)(2) of Rule 485; or | |
| ☐ | pursuant to paragraph (a)(2) of Rule 485; or | |
| ☐ | on _________ pursuant to paragraph (a)(3) of Rule 485. |
If appropriate, check the following box:
| ☒ | This post-effective amendment designates a new effective date for a previously filed post-effective amendment. |
Explanatory Note
This Post-Effective Amendment (“PEA”) to the Registration Statement on Form N-1A is being filed for the sole purpose of designating a new effective date for the previously filed PEA No. 137 to the Registrant’s Registration Statement filed under Rule 485(a) of the Securities Act of 1933 on January 15, 2026, for the purpose of creating new series of the Trust. This PEA incorporates by reference the information contained in Parts A, B and C of PEA No. 137 to the Registrant’s Registration Statement filed on January 15, 2026. The Registrant may file additional subsequent delaying amendments designating a new effective date.
SIGNATURES
Pursuant to the requirements of the Securities Act of 1933, as amended, and the Investment Company Act of 1940, as amended, the Registrant certifies that it meets all of the requirements for effectiveness of this registration statement under rule 485(b) under the Securities Act of 1933 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, duly authorized, in the City of Milwaukee and State of Wisconsin, on the 26th day of March, 2026.
| INVESTMENT MANAGERS SERIES TRUST III | ||
| By: | /s/ Maureen Quill | |
| Maureen Quill | ||
| President and Principal Executive Officer | ||
Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed on the 26th day of March, 2026, by the following persons in the capacities set forth below.
|
Signatures
|
Title | |
| /s/ Maureen Quill | Trustee, President & Principal Executive Officer | |
| Maureen Quill | ||
| † | Trustee | |
| Sandra Brown | ||
| † | Trustee | |
| Robert F. Goldrich | ||
| † | Trustee | |
| John P. Zader | ||
| Trustee | ||
| J. Richard Atwood | ||
| /s/ Rita Dam | Treasurer, Principal Accounting Officer & Principal Financial Officer | |
| Rita Dam | ||
| † By | /s/ Rita Dam | |
|
Attorney-in-fact, pursuant to power of attorney previously November 19, 2024. | ||