Company: FEAV
Filing Date: 2025-05-23
Form Type: S-3
Source: 0001193125-25-125840
Chunk: 2

Company: 5E Advanced Materials, Inc.
Filing Date: 2025-05-23
Form: S-3
Chunk 2
---
 $0.01 per share, of 5E Advanced Materials, Inc. (the “Company”). The Shares were initially sold by the Company to the Selling Stockholders pursuant to Subscription
Agreements dated May 12, 2025 and May 13, 2025, respectively (the “Subscription Agreements”) or issued to the Selling Stockholders for advisory services.

We will not receive any proceeds from any sale of the Shares by the Selling Stockholders. We will pay the expenses associated with the sale of
securities pursuant to this prospectus.

We are registering the resale of the Shares pursuant to registration rights granted to the
Selling Stockholders under the Subscription Agreements. Our registration of the Shares does not mean that the Selling Stockholders will sell or transfer any of the securities offered hereby. The Selling Stockholders may offer and sell the Shares in
a number of different ways and at varying prices. We provide more information about how the Shares may be sold in the section entitled “Plan of Distribution” beginning on page 18.

Our common stock is listed on the Nasdaq Global Select Market under the symbol “FEAM.” Our CHESS Depositary Interests
(“CDIs”) are listed on the Australian Securities Exchange under the symbol “5EA” with ten CDIs representing an interest in one share of our common stock. On May 22, 2025, the last reported sale price of our common stock was
$4.27 per share.

We are an “emerging growth company” and “smaller reporting company” under federal securities laws
and, as such, are subject to reduced public company reporting requirements.

Investing in our common stock involves a high degree of risk. See the section titled “ Risk Factors” beginning on page 9 of this prospectus and any similar section contained in any applicable prospectus supplement concerning factors you should consider before investing in our securities.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or passed upon the adequacy or accuracy of this prospectus. Any representation to the contrary is a criminal offense.

The date of this prospectus is , 2025.

TABLE OF CONTENTS

|                                                       |     | Page |    |
| ABOUT THIS PROSPECTUS                                 |     |      |  1 |
| TRADEMARKS AND TRADE NAMES                            |     |      |  2 |
| CAUTIONARY NOTE REGARDING FORWARD-LOOKING STATEMENTS  |     |      |  3 |
|