# EDGAR Filing Document

**Accession Number:** 0000912036
**File Stem:** 0001193125-25-317123
**Filing Date:** 2025-12
**Character Count:** 3279
**Document Hash:** eaa593abbc0b73d0bce4efe147977911
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-317123.hdr.sgml**: 20251212

**ACCESSION NUMBER**: 0001193125-25-317123

**CONFORMED SUBMISSION TYPE**: 497J

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20251212

**DATE AS OF CHANGE**: 20251212

**EFFECTIVENESS DATE**: 20251212

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** AMG Funds IV
- **CENTRAL INDEX KEY:** 0000912036

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1031

**FILING VALUES:**
- **FORM TYPE:** 497J
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-68666
- **FILM NUMBER:** 251567005

**BUSINESS ADDRESS:**
- **STREET 1:** 680 WASHINGTON BOULEVARD, SUITE 500
- **CITY:** STAMFORD
- **STATE:** CT
- **ZIP:** 06901
- **BUSINESS PHONE:** 203-299-3500

**MAIL ADDRESS:**
- **STREET 1:** 680 WASHINGTON BOULEVARD, SUITE 500
- **CITY:** STAMFORD
- **STATE:** CT
- **ZIP:** 06901

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** ASTON FUNDS
- **DATE OF NAME CHANGE:** 20061201

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** ABN AMRO FUNDS
- **DATE OF NAME CHANGE:** 20021227

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** ALLEGHANY FUNDS
- **DATE OF NAME CHANGE:** 19980406

## Series and Classes Contracts Data

### AMG GW&K Small Cap Growth Fund (Series ID: S000001114)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000003009 | CLASS N SHARES | MCGFX           |
| C000003010 | CLASS I SHARES | MCGIX           |
| C000271637 | CLASS Z SHARES | GWSZX           |

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| | |
|:---|:---|
| ![LOGO](g561928dsp01.jpg) | ROPES & GRAY LLP |
| ![LOGO](g561928dsp01.jpg) | PRUDENTIAL TOWER |
| ![LOGO](g561928dsp01.jpg) | 800 BOYLSTON STREET |
| ![LOGO](g561928dsp01.jpg) | BOSTON, MA 02199-3600 |
| ![LOGO](g561928dsp01.jpg) | WWW.ROPESGRAY.COM |

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| | |
|:---|:---|
| December 12, 2025 |  |
|  | Renee E. Laws |
|  | T +1 617 235 4975<br> renee.laws@ropesgray.com |

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**<u>VIA EDGAR</u>**

Securities and Exchange Commission

Division of Investment Management

100 F Street, N.E.

Washington, D.C. 20549

Re: <u>AMG Funds IV</u>

File Nos. 033-68666; 811-08004

Ladies and Gentlemen:

Pursuant to Rule 497(j) under the Securities Act of 1933, as amended (the "1933 Act"), AMG Funds IV (the "Trust") hereby certifies that the following forms of prospectus and statement of additional information that would have been filed by the Trust pursuant to Rule 497(c) under the 1933 Act would not have differed from those contained in the Trust's Post-Effective Amendment No. 204 to its Registration Statement on Form N-1A, which was filed by electronic transmission on December 5, 2025 pursuant to Rule 485(b) under the 1933 Act and is the most recent amendment to the Trust's Registration Statement on Form N-1A:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) Prospectus for AMG GW&K Small Cap Growth Fund (formerly AMG Montrusco Bolton Large Cap Growth Fund), dated
December 8, 2025; and

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) Statement of Additional Information for AMG GW&K Small Cap Growth Fund, dated December 8, 2025.

If you have any questions concerning this filing, please call me at (617) 235-4975.

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| |
|:---|
| Sincerely, |
| /s/ Renee E. Laws |
| Renee E. Laws |

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