USA Rare Earth Files 8-K Adding Supplemental Risk Factors

What Happened

• USA Rare Earth, Inc. (ticker: USAR) filed a current report on Form 8‑K dated September 15, 2026, under Item 8.01 to supplement the risk factors previously disclosed in its Form 10‑K filed March 31, 2025 and its most recent Quarterly Reports on Form 10‑Q. The additional or updated risk factor disclosures are included as Exhibit 99.1 to the 8‑K.

Key Details

• Filing date: September 15, 2026 (Form 8‑K).
• The supplement updates risk factors previously disclosed in the 10‑K filed March 31, 2025 and the company’s latest 10‑Qs.
• The new/updated risk factor text is provided as Exhibit 99.1 to the 8‑K.
• The 8‑K reports only these “Other Events” risk-factor supplements (Item 8.01) and the attached exhibits (Item 9.01); it does not report earnings, executive changes, or other material events.

Why It Matters

• Updated risk factors can change how investors assess the company’s near‑term and long‑term risks (regulatory, operational, financial, or project‑specific). Retail investors should read Exhibit 99.1 to understand any new or expanded risks the company has disclosed and consider whether those disclosures affect their investment thesis or risk tolerance.