# EDGAR Filing Document

**Accession Number:** 0000893783
**File Stem:** 0001829126-26-004819
**Filing Date:** 2026-5
**Character Count:** 3139
**Document Hash:** 00b7e63da324c66142fbf122457b3a6f
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001829126-26-004819.hdr.sgml**: 20260508

**ACCESSION NUMBER**: 0001829126-26-004819

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260508

**DATE AS OF CHANGE**: 20260507

**EFFECTIVENESS DATE**: 20260508

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** GABELLI INVESTOR FUNDS INC
- **CENTRAL INDEX KEY:** 0000893783

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MD
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 033-54016
- **FILM NUMBER:** 26955561

**BUSINESS ADDRESS:**
- **STREET 1:** ONE CORPORATE CENTER
- **CITY:** RYE
- **STATE:** NY
- **ZIP:** 10580-1434
- **BUSINESS PHONE:** 9149215100

**MAIL ADDRESS:**
- **STREET 1:** ONE CORPORATE CENTER
- **CITY:** RYE
- **STATE:** NY
- **ZIP:** 10580-1434

## Series and Classes Contracts Data

### THE GABELLI ABC FUND (Series ID: S000001070)

---

|  |  |  |
|:---|:---|:---|
| Class Name     | Ticker Symbol | Class ID   |
| CLASS I        | GABCX         | C000002886 |
| Advisor Shares | GADVX         | C000050409 |

---

## Series and Classes Contracts Data

### THE GABELLI ABC FUND (Series ID: S000001070)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000002886 | CLASS I        | GABCX           |
| C000050409 | Advisor Shares | GADVX           |

**Filed Pursuant to Rule 497(e)**

**GABELLI INVESTOR FUNDS INC.**

The Gabelli ABC Fund (the "Fund")

**Supplement dated May 7, 2026, to the Fund's Statutory Prospectus (the "Prospectus")**

*The following paragraphs are added to the disclosure to the Prospectus sub-section entitled "Management – The Portfolio Managers":*

As previously announced by GAMCO Investors, Inc. ("GAMCO") on March 23, 2026, GAMCO Investors, Inc.'s ("GAMCO") Chairman, Mario J. Gabelli ("Mr. Gabelli"), Trustee, Chairman and Chief Investment Officer of the Fund, and Chairman, Co-Chief Executive Officer, and Chief Investment Officer – Value Portfolios of GAMCO Investors, Inc. and Chief Investment Officer – Value Portfolios of Gabelli Funds, LLC and GAMCO Asset Management, Inc., was admitted to the hospital for observation and testing after a medical incident March 19, 2026, following a busy day of events around New York City. His condition is improving and he is on the road to recovery, but the timeline for his return is not yet known.

On March 22, 2026, GAMCO, the parent company of the Fund's adviser, Gabelli Funds, LLC, implemented GAMCO's succession plan that has been in place for several years. In accordance with that plan, Christopher J. Marangi was named President of GAMCO on March 22, 2026. While the timeline for Mario J. Gabelli's return remains undetermined, the day-to-day operations of the Company will continue to be led by co-CEO, Douglas R. Jamieson, and Christopher J. Marangi.

Willis Brucker, portfolio manager of the Fund, will continue to be responsible for the day to day management of the Fund's portfolio during Mr. Gabelli's absence.

**SHAREHOLDERS SHOULD RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE**