Filed Pursuant to Rule 497(e)
Registration No. 333-81209

THE GABELLI UTILITIES FUND (the “Fund”)
Supplement dated August 31, 2023
to
The Gabelli Utilities Fund’s Statutory Prospectus dated April 28, 2023
and Statement of Additional Information dated April 28, 2023

This supplement amends certain information in the Prospectus (the “Prospectus”) and Statement of Additional Information (the “SAI”), each dated April 28, 2023, of The Gabelli Utilities Fund (the “Fund”). Unless otherwise indicated, all other information included in the Prospectus and SAI, or any previous supplements thereto, that is not inconsistent with the information set forth in this supplement, remains unchanged. Capitalized terms not otherwise defined in this supplement have the same meaning as in the Prospectus or SAI, as applicable.

Addition of Portfolio Manager

Effective August 31, 2023, Robert D. Leininger has been added to the Fund’s portfolio management team.

To reflect the change, please note the following:

The following sentence is added to the end of the sub-section “Management—The Portfolio Managers” in the “Summary of the Fund” section of the Prospectus:

Mr. Robert D. Leininger has served as a portfolio manager of the Fund since August 31, 2023.

The following paragraph is added immediately after the second paragraph in the section “Management of the Fund—The Portfolio Managers” of the Prospectus:

Robert D. Leininger, CFA, joined the portfolio management team effective August 31, 2023. He joined GAMI in 1993 as a security analyst. Mr. Leininger moved to Rorer Asset Management LLC in Philadelphia in 1997, where he was a partner in the firm and member of the investment policy committee. In August 2009, he joined Copeland Capital Management as a partner and portfolio manager before rejoining GAMI in 2010 where he currently serves as a portfolio manager for the Adviser and on GAMCO’s institutional and high net worth separate accounts team. He is a member of the Financial Analyst Society of Philadelphia. Mr. Leininger is a magna cum laude graduate of Amherst College with a degree in Economics and holds an MBA from the Wharton School at the University of Pennsylvania.

Please also note the following changes to the SAI:

In the section entitled “Investment Advisory and Other Services– Other Accounts Managed”, the following is added with information as of December 31, 2022:

EXCLUDES THE GABELLI UTILITIES FUND:

In the section entitled “Investment Advisory and Other Services – Portfolio Manager Information”, the sub-section entitled “Compensation Structure for Justin Bergner and Brett Kearney” is deleted in its entirety and is replaced with the following:

Compensation Structure for Justin Bergner, Robert D. Leininger and Brett Kearney

The compensation of Mr. Bergner, Mr. Leininger and Mr. Kearney is structured to enable the Adviser to attract and retain highly qualified professionals in a competitive environment. Each receives a compensation package that includes a minimum draw or base salary, equity based incentive compensation via awards of stock options and restricted stock, and incentive-based variable compensation based on a percentage of net revenue received by the Adviser for managing the Fund to the extent that the amount exceeds a minimum level of compensation. Net revenues are determined by deducting from gross investment management fees certain of the firm’s expenses (other than the respective Portfolio Manager’s compensation) allocable to the Fund (the incentive based variable compensation for managing other accounts is also based on a percentage of net revenues to the investment adviser for managing the account). These methods of compensation are based on the premise that superior long term performance in managing a portfolio should be rewarded with higher compensation as a result of growth of assets through appreciation and net investment activity. The level of equity based incentive and incentive based variable compensation is based on an evaluation by the Adviser’s parent, GAMI, of quantitative and qualitative performance evaluation criteria. This evaluation takes into account, in a broad sense, the performance of the accounts managed by the portfolio manager, but the level of compensation is not determined with specific reference to the performance of any account against any specific benchmark. Generally, greater consideration is given to the performance of larger accounts and to longer term performance over smaller accounts and short term performance.

In the section entitled “Investment Advisory and Other Services – Portfolio Manager Information – Ownership of Shares in the Fund” the following table is added:

PLEASE RETAIN THIS SUPPLEMENT FOR FUTURE REFERENCE