HYCROFT MINING HOLDING CORPORATION

Hycroft Mining Holding Corporation is a U.S.-based gold and silver exploration stage issuer that owns the Hycroft Mine in Northern Nevada, approximately 54 miles northwest of Winnemucca, Nevada. The Hycroft Mine historically operated as an open-pit oxide mining and heap leach processing operation. Mining operations at the Hycroft Mine were restarted in 2019 on a pre-commercial scale and discontinued in November 2021. Processing of gold and silver ore previously placed on leach pads was completed as of December 31, 2022. In February 2026, Hycroft completed and filed the Hycroft Mine Initial Assessment and Technical Report Summary, Nevada, USA, with an effective date of January 21, 2026 (the "2026 Hycroft TRS"). This report provides an initial assessment of the mineral resource estimate, utilizing a milling and pressure oxidation ("POX") process for sulfide and some transition mineralization, and a heap leaching process for oxide and some transition mineralization. The 2026 Hycroft TRS superseded the Hycroft Property Initial Assessment Technical Report Summary Humboldt and Pershing Counties, Nevada, with an effective date of March 27, 2023 ("2023 Hycroft TRS"). The 2026 Hycroft TRS updates the mineral resource estimate and includes drilling through the end of 2024 and associated assay results received through March 17, 2025.