UAMY

Item 4 is hereby amended and supplemented with the following: This Amendment No. 4 is being filed to update the Reporting Persons and the percentage ownership of the Reporting Persons as a result of Lydia Dugan's passing on March 25, 2025, and to report the dispositions of the shares pursuant to sales in the open market via a broker on October 28, 2025 for an aggregate amount of 1,022,089 shares, and on October 29, 2025 for an aggregate amount of 1,346,278 shares. As a result, the Reporting Persons ceased to be the beneficial owner of more than five percent (5%) of the outstanding securities of Issuer. The filing of this Amendment No. 4 represents the final amendment to the Schedule 13D and constitutes an exit filing for the Reporting Persons.

Item 4 is hereby amended and supplemented with the following: This Amendment No. 4 is being filed to update the Reporting Persons and the percentage ownership of the Reporting Persons as a result of Lydia Dugan's passing on March 25, 2025, and to report the dispositions of the shares pursuant to sales in the open market via a broker on October 28, 2025 for an aggregate amount of 1,022,089 shares, and on October 29, 2025 for an aggregate amount of 1,346,278 shares. As a result, the Reporting Persons ceased to be the beneficial owner of more than five percent (5%) of the outstanding securities of Issuer. The filing of this Amendment No. 4 represents the final amendment to the Schedule 13D and constitutes an exit filing for the Reporting Persons.