# EDGAR Filing Document

**Accession Number:** 0000912036
**File Stem:** 0001193125-23-011856
**Filing Date:** 2023-1
**Character Count:** 3720
**Document Hash:** e9dd42a2a613358aac19f4f6990c8212
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-23-011856.hdr.sgml**: 20230120

**ACCESSION NUMBER**: 0001193125-23-011856

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20230120

**DATE AS OF CHANGE**: 20230120

**EFFECTIVENESS DATE**: 20230120

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** AMG Funds IV
- **CENTRAL INDEX KEY:** 0000912036
- **IRS NUMBER:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1031

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-68666
- **FILM NUMBER:** 23540400

**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 River Road Small Cap Value Fund (Series ID: S000001130)

---

|  |  |  |
|:---|:---|:---|
| Class Name     | Ticker Symbol | Class ID   |
| CLASS N SHARES | ARSVX         | C000003038 |
| CLASS I SHARES | ARSIX         | C000040086 |
| CLASS Z Shares | ARZMX         | C000194568 |

---

### AMG River Road Small-Mid Cap Value Fund (Series ID: S000016733)

---

|  |  |  |
|:---|:---|:---|
| Class Name     | Ticker Symbol | Class ID   |
| CLASS N SHARES | ARSMX         | C000046749 |
| CLASS I SHARES | ARIMX         | C000050292 |
| CLASS Z Shares | ARSZX         | C000194569 |

---

## Series and Classes Contracts Data

### AMG River Road Small Cap Value Fund (Series ID: S000001130)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000003038 | CLASS N SHARES | ARSVX           |
| C000040086 | CLASS I SHARES | ARSIX           |
| C000194568 | CLASS Z Shares | ARZMX           |

### AMG River Road Small-Mid Cap Value Fund (Series ID: S000016733)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000046749 | CLASS N SHARES | ARSMX           |
| C000050292 | CLASS I SHARES | ARIMX           |
| C000194569 | CLASS Z Shares | ARSZX           |

Filed pursuant to Rule 497(e)

File Nos. 033-68666 and 811-08004

**AMG FUNDS IV** 

**AMG River Road Small-Mid Cap Value Fund** 

**AMG River Road Small Cap Value Fund** 

Supplement dated January 20, 2023 to the Prospectus and Statement of Additional Information, each dated March 1, 2022

The following information supplements and supersedes any information to the contrary relating to AMG River Road Small-Mid Cap Value Fund and AMG River Road Small Cap Value Fund (each a "Fund" and collectively, the "Funds"), each a series of AMG Funds IV, contained in the Funds' Prospectus (the "Prospectus") and Statement of Additional Information (the "SAI"), dated as noted above.

Effective as of March 31, 2023 (the "Effective Date"), James C. Shircliff, CFA will no longer serve as a portfolio manager of the Funds. Effective upon the Effective Date, J. Justin Akin and R. Andrew Beck will serve as the portfolio managers jointly and primarily responsible for the day-to-day management of each Fund. Accordingly, as of the Effective Date, all references to and information relating to Mr. Shircliff in the Prospectus and SAI are deleted and all references to the portfolio managers of the Fund shall refer to Messrs. Akin and Beck.

PLEASE KEEP THIS SUPPLEMENT FOR FUTURE REFERENCE