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Form 8-K

sec.gov

8-K — USA Rare Earth, Inc.

Accession: 0001213900-26-086814

Filed: 2026-08-07

Period: 2026-08-07

CIK: 0001970622

SIC: 1000 (METAL MINING)

Item: Completion of Acquisition or Disposition of Assets

Item: Financial Statements and Exhibits

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 OR 15(d)

of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported):

August 7, 2026

USA Rare Earth, Inc.

(Exact Name of Registrant as Specified in its

Charter)

Delaware

001-41711

98-1720278

(State or Other Jurisdiction

of Incorporation)

(Commission File Number)

(I.R.S. Employer

Identification No.)

100 W. Airport Road, Stillwater, OK 74075

(Address of Principal Executive Offices) (Zip

Code)

(813) 867-6155

(Registrant’s telephone number, including

area code)

Not applicable

(Former Name or Former Address, if Changed Since

Last Report)

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))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchange on which registered

Common Stock, par value $0.0001

USAR

The Nasdaq Stock Market LLC

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 (§240.12b-2 of this chapter).

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant

has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant

to Section 13(a) of the Exchange Act. ☐

Item

2.01 Completion of Acquisition or Disposition of Assets

As previously disclosed, on March 4, 2026, USA

Rare Earth, Inc. (“USAR”) entered into a definitive Agreement and Plan of Merger (the “Merger Agreement”) by and

among USAR, Texas Mineral Resources Corp., a Delaware corporation (“TMRC”), Hamer Merger Sub, Inc., a Delaware corporation

and a wholly owned subsidiary of USAR (“First Merger Sub”), and Hamer Merger Sub, LLC, a Delaware limited liability company

and a wholly owned subsidiary of USAR (“Second Merger Sub” and together with First Merger Sub, the “Merger Subs”),

providing for the merger of First Merger Sub with and into TMRC, with TMRC surviving as a wholly owned subsidiary of USAR (the “First

Merger”), followed promptly by the merger of Second Merger Sub with and into the surviving corporation of the First Merger, with

Second Merger Sub surviving as a wholly owned subsidiary of USAR (the “Second Merger” and together with the First Merger,

the “Mergers”). On August 7, 2026, USAR completed the Mergers pursuant to the Merger Agreement.

Pursuant to the Merger Agreement, at the effective

time of the First Merger, each share of common stock, par value $0.01 per share, of TMRC issued and outstanding immediately prior to such

time ([excluding shares as to which dissenters’ rights were properly exercised] and shares owned by USAR, TMRC or their respective

wholly owned subsidiaries) was converted into the right to receive that portion of a validly issued, fully paid and nonassessable share

of common stock, par value $0.0001 per share, of USAR (“USAR Common Stock”) equal to the quotient obtained by dividing (a)

3,823,328 by (b) the aggregate number of shares of TMRC common stock outstanding on a fully diluted basis at the effective time, resulting

in a final exchange ratio of 0.043279843 of a share of USAR Common Stock for each share of TMRC common stock (based on 88,339,693 shares

of TMRC common stock outstanding on a fully diluted basis at the effective time). Holders of TMRC common stock otherwise entitled to a

fractional share of USAR Common Stock became entitled to receive cash in lieu of such fractional share.

The issuance of shares of USAR Common Stock to

the former stockholders of TMRC was registered under the Securities Act of 1933, as amended (the “Securities Act”), pursuant

to a registration statement on Form S-4 (File No. 333-295838), as amended, filed by USAR with the Securities and Exchange Commission (the

“SEC”) and declared effective on June 29, 2026. The proxy statement/prospectus included in the Registration Statement contains

additional information about the Mergers, the Merger Agreement and the transactions contemplated thereby.

The foregoing description of the Merger Agreement

does not purport to be complete and is qualified in its entirety by reference to the Merger Agreement, which was previously filed as Exhibit

2.1 to USAR’s Current Report on Form 8-K filed with the SEC on March 5, 2026, and is incorporated herein by reference.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits:

The following exhibits are filed or furnished with

this Current Report on Form 8-K:

Exhibit No.

Description

2.1†

Agreement and Plan of Merger, dated March 4, 2026, by and among USAR, TMRC and Merger Subs (incorporation by reference to Exhibit 2.1 to USAR’s Current Report on Form 8-K (File No. 001-41711) filed with the SEC on March 5, 2026).

104

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SIGNATURE

Pursuant to the requirements of the Securities

Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

USA Rare Earth, Inc.

Date: August 7, 2026

By:

/s/ Valerie Ford Jacob

Valerie Ford Jacob

Chief Legal Officer

2

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