Company: FEAV
Filing Date: 2025-01-14
Form Type: DEFA14A
Source: 0000950170-25-005374
Chunk: 0

Company: 5E Advanced Materials, Inc.
Filing Date: 2025-01-14
Form: DEFA14A
Chunk 0
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<div align='center'>UNITED STATES
SECURITIES AND EXCHANGE COMMISSIONWASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934</div>

<div align='center'>5E ADVANCED MATERIALS, INC.

(Exact name of Registrant as Specified in Its Charter)</div>

| Delaware                                 |     | 001-41279               |         87-3426517 |
| (State or Other Jurisdiction             
 of Incorporation)                        |     | -Commission File Number |      -IRS Employer 
 Identification No. |
| 9329 Mariposa Road, Suite 210            |     |                         |                    |
| Hesperia, California                     |     |                         |              92344 |
| (Address of Principal Executive Offices) |     |                         |          -Zip Code |

| Registrant’s Telephone Number, Including Area Code: (442) 221-0225 |

<div align='center'>(Former Name or Former Address, if Changed Since Last Report)</div>

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☒ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

<div align='center'>Securities registered pursuant to Section 12(b) of the Act:</div>

| Title of each class                     |     | Trading   
 Symbol(s) |     | Name of each exchange on which registered |
| Common stock, $0.01 par value per share |     | FEAM      |     | The Nasdaq Global Select Market           |

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240