5E Advanced Materials, Inc.

Item 7.01 Regulation FD Disclosure. On February 3, 2026, 5E Advanced Materials, Inc. (the “Company”) issued a press release announcing the closing of the Offering (as defined below), a copy of which is furnished as Exhibit 99.1 hereto and incorporated by reference herein. The information contained in this Item 7.01, including Exhibit 99.1 attached hereto, is furnished pursuant to the rules and regulations of the Commission (as defined below) and shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall it be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such a filing.

Item 8.01 Other Events. On February 3, 2026, the Company announced that it had completed the issuance and sale (the “Offering”) of an aggregate of 18,000,000 shares (the “Shares”) of its common stock, par value $0.01 per share (the “Common Stock”) for a purchase price of $2.00 per Share for gross proceeds of $36.0 million. The Shares were offered pursuant to a registration statement on Form S-1 (File No. 333-292988), which was declared effective by the Securities and Exchange Commission (the “Commission”) on January 29, 2026. The Company estimates the net proceeds from the Offering will be approximately $30.3 million, after deducting placement agent fees and estimated offering expenses payable by the Company. The Company intends to use the net proceeds of the Offering for the operation of its small-scale boron facility, wellfield development and finalization of commercial mine plan, FEED engineering, and general corporate purposes. In connection with the Offering, on January 29, 2026, the Company entered into a securities purchase agreement (the “Purchase Agreement”) with certain institutional investors in the Offering, and a placement agency agreement (the “Placement Agency Agreement”) with Konik Capital Partners, LLC, a division of T.R. Winston & Co. (the “Placement Agent”). Pursuant to the Placement Agency Agreement, the Company agreed to pay the Placement Agent a cash fee equal to 7.0% of gross proceeds from the sale of Shares in the Offering and to reimburse the Placement Agent for certain out-of-pocket expenses incurred in connection with the Offering. The Purchase Agreement and the Placement Agency Agreement contain customary representations, warranties and indemnification obligations. In connection with the Offering, the Company also agreed not to issue any shares of Common Stock for a period of ninety (90) days following the closing of the Offering, other than pursuant to an equity incentive plan, upon the exercise, exchange or conversion of any currently outstanding securities, or pursuant to acquisitions or strategic transactions. The foregoing descriptions of the Purchase Agreement and the Placement Agency Agreement do not purport to be complete and are qualified in their entirety by the full text thereof, forms of which are filed as Exhibits 10.1 and 1.1 hereto, respectively, and incorporated herein by reference. This Current Report on Form 8-K does not constitute an offer to sell any securities or a solicitation of an offer to buy any securities, nor shall there be any sale of any securities in any state or jurisdiction in which such an offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.