Company: FEAV
Filing Date: 2025-05-23
Form Type: S-3
Source: 0001193125-25-125840
Chunk: 13

Company: 5E Advanced Materials, Inc.
Filing Date: 2025-05-23
Form: S-3
Chunk 13
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 | $                    |   (1.18 | ) |     | $ |   (0.70 | ) |
| Weighted average common shares outstanding – basic and diluted |     |                      |  52,523 |   |     |   |  43,842 |   |
| Shares of common stock outstanding at period end               |     |                      |  63,318 |   |     |   |  44,187 |   |

As Adjusted for 1-for-23Reverse Stock Split (in thousands, except per share amounts):

|                                                                |     | Years Ended June 30, |    2024 |   |     |   |    2023 |   |
|:---------------------------------------------------------------|:----|:---------------------|--------:|:--|:----|:--|--------:|:--|
| Net loss                                                       |     | $                    | (62,013 | ) |     | $ | (30,624 | ) |
| Net loss per common share – basic and diluted                  |     | $                    |  (27.15 | ) |     | $ |  (16.07 | ) |
| Weighted average common shares outstanding – basic and diluted |     |                      |   2,284 |   |     |   |   1,906 |   |
| Shares of common stock outstanding at period end               |     |                      |   2,753 |   |     |   |   1,921 |   |

10

USE OF PROCEEDS

All of the Shares offered by the Selling Stockholders pursuant to this prospectus will be sold by the Selling Stockholders for their
respective accounts. We will not receive any of the proceeds from the sale of the Shares.

With respect to the registration of the Shares
offered by the Selling Stockholders pursuant to this prospectus, the Selling Stockholders will pay any underwriting discounts and commissions and expenses incurred by the Selling Stockholders for brokerage, accounting, tax, or legal services or any
other expenses incurred by the Selling Stockholders in disposing of the Shares. We will bear the costs, fees, and expenses incurred in effecting the registration of the Shares covered by this prospectus, including all registration and filing fees,
Nasdaq listing fees, and expenses of our counsel and our independent registered public accounting firm.

11

DESCRIPTION OF CAPITAL STOCK Description of Capital Stock The following description of our capital stock is a summary. The following description of our securities