Polymetal Amursk POX Supply Chain

Name of Mine, Production Facility or Transport Operation

Polymetal Amursk POX Supply Chain

Signatory Ownership Position

Not Applicable

Name of Operating Company

Amur Hydrometallurgical Plant LLC

Operation Address / Location

6 St. Shkolnaya
Amursk, Khabarovsk Region

Date of Certification

Date of Initial Certification

April 29, 2019

Signatory Date*

December 10, 2018

Additional Information or Comments

Certification of the Amursk POX Supply Chain expired August 1, 2022. Subsidiary was designated by the U.S. Department of State in May 2023 as a Russian located asset. All service agreements between Polymetal International Plc (the Company) and Amur Hydrometallurgical Plant LLC (the Subsidiary) have been terminated. All payments from the Company under inter-group agreements with the Subsidiary have been discontinued or suspended. As of the date the Company does not have the ability to monitor and manage cyanide management issues at Amursk POX, cannot guarantee compliance of this site with the provisions of the Cyanide Code and is not able to carry out recertification. Management of the Subsidiary, including cyanide management issues, has been delegated to the executives of JSC Polymetal (the holding company located in the Russian Federation). Current certification status: “certification expired” (the Company is considering all possible options available for divestment of Russian assets). ”

The Amursk POX Supply Chain included receipt of cyanide at the Port of Nakhodka, Russia and road transportation to the POX Amursk Operation.