KGHM Polska Miedź S.A.

Audit Report / Information • May 22, 2025

The English content of this report is a free translation of the registered auditor's report of the belowmentioned Polish Company. In the event of any discrepancies in interpreting the terminology, the Polish language version is binding.

Independent registered auditor's report on the assurance engagement in relation to the assessment of the Remuneration Report

To the General Shareholders' Meeting, the Supervisory Board and the Management Board of KGHM Polska Miedź S.A.

Introduction

Management Board of KGHM Polska Miedź S.A. (the "Company") engaged us to conduct a reasonable assurance engagement for the verification of completeness and compliance with applicable requirements of the attached Remuneration Report for the year ended 31 December 2024 (the "Remuneration Report").

Description of the subject matter and applicable criteria

The Remuneration Report was prepared by the Supervisory Board to comply with the requirements in Art. 90g paragraph 1 of the Act of 29 July, 2005 on public offering and conditions for introducing financial instruments to an organized trading system and on public companies (Journal of Laws of 2024, item 620, as amended - hereinafter the "Public Offering Act"). The applicable requirements regarding the Remuneration Report are contained in the Public Offering Act.

The requirements referred to in the preceding sentence determine the basis for preparation of the Remuneration Report (hereinafter the "Basis for Preparation") and, in our view, constitute appropriate criteria to form the reasonable assurance conclusion.

According to the requirements of Art. 90g paragraph 10 of the Public Offering Act, the Remuneration Report is subject to assessment by a registered auditor in terms of it including the information required under Art. 90g paragraph 1-5 and 8 of the Public Offering Act. This report fulfills this requirement.

By the registered auditor's assessment referred to in the preceding sentence and constituting the basis for our formulation of a conclusion providing reasonable assurance, we mean the assessment whether, in all material respects, the scope of information presented in the Remuneration Report is complete and has been disclosed with the level of detail required by the Public Offering Act. Additionally, our assessment includes verification that the information presented in the Remuneration Report is consistent, in all material respects, with the actual state of affairs, does not ignore significant facts and does not contain material distortions.

Responsibility of the Supervisory Board

The Supervisory Board is responsible for the preparation and completeness of the Remuneration Report. The Supervisory Board is responsible for the selection and application of the appropriate methods for preparation of financial data and non-financial information as well as for the design, implementation and maintenance of systems and processes of internal control and accounting records, that are necessary to enable preparation of a Remuneration Report that is free of material misstatements and complies with the applicable requirements.

PricewaterhouseCoopers Polska spółka z ograniczoną odpowiedzialnością Audyt sp. k., ul. Polna 11, 00-633 Warszawa, Polska; T: +48 (22) 746 4000, F: +48 (22) 742 4040, www.pwc.com

PricewaterhouseCoopers Polska spółka z ograniczoną odpowiedzialnością Audyt sp. k. wpisana jest do Krajowego Rejestru Sądowego prowadzonego przez Sąd Rejonowy dla m. st. Warszawy, pod numerem KRS 0000750050, NIP 526-021-02-28. Siedzibą Spółki jest Warszawa, ul. Polna 11.

Our responsibility

Our responsibility was to assess the completeness and compliance with the applicable requirements of the information contained in the attached Remuneration Report and to express, based on the evidence obtained, an independent conclusion from the assurance service performed, providing reasonable assurance.

We conducted our engagement in accordance with National Standard on Assurance Engagements 3000 (Revised), Assurance Engagements other than Audits and Reviews of Historical Financial Information, in the wording of the International Standard on Assurance Engagements 3000 (Revised) ("ISAE 3000 (R)"). This standard requires that we comply with ethical requirements, plan and perform procedures to obtain reasonable assurance whether the Remuneration Report is prepared, in all material aspects, in accordance with the applicable requirements.

Reasonable assurance is a high level of assurance, but it does not guarantee that the service performed in accordance with ISAE 3000 (R) will always detect the existing material misstatement.

Quality control requirements

We apply the provisions of the National Standard on Quality Control 1 in the wording of the International Standard on Quality Management (PL) 1 - "Quality management for companies performing audits or reviews of financial statements or commissioning other assurance or related services" developed by the International Standards Board on Auditing and Assurance Services and adopted by a resolution of the Council of the Polish Audit Oversight Agency. This standard requires us to design, implement and operate a quality management system, including policies and procedures regarding compliance with ethical requirements, professional standards and applicable legal and regulatory requirements.

We comply with the independence and other ethical requirements of the International Code of Ethics for Professional Accountants (including International Independence Standards) issued by the International Ethics Standards Board for Accountants, which is founded on fundamental principles of integrity, objectivity, professional competence and due care, confidentiality and professional behaviour.

Summary of the work performed

Our planned and performed procedures were aimed at obtaining reasonable assurance whether the Remuneration Report was prepared, in all material aspects, in accordance with the applicable requirements, is complete and free from material misstatements and omissions. Our procedures included, in particular:

• analysis of the Remuneration Report and comparing the information contained therein with the applicable requirements;
• analysis of the resolutions of the General Shareholders' Meeting of the Company regarding the remuneration policy for members of the Management Board and the Supervisory Board as well as any supplementary resolutions of the Supervisory Board and other documents regulating the remuneration policy subject to the disclosure requirement in the Remuneration Report;
• understanding the procedures adopted by the Supervisory Board to meet requirements of the preparation of the Remuneration Report, including understanding the relevant internal control procedures to the extent necessary to assess the risk of material misstatement or the omission of significant information;
• identifying, by comparing with corporate documents, a list of persons for whom there is a requirement to include information in the Remuneration Report and verifying, through inquiries of persons responsible for preparing the report, and, where we consider it appropriate, also directly

with persons subject to the requirement provide information on, whether all information covered by the criteria for the preparation of the Remuneration Report are disclosed in the Remuneration Report;

• where we consider it appropriate to assess the compliance of the Remuneration Report with applicable regulations, reconciliation of the financial data regarding remuneration presented in the Remuneration Report to the Company's accounting books and other relevant source documents;
• where we consider it appropriate to assess the completeness of the Remuneration Report with the applicable regulations, reconcile with the relevant source documents whether the nonfinancial information required for disclosure in the Remuneration is accurate and does not omit material facts.

The Remuneration Report was not subject to audit as defined in National Standards on Auditing. In the course of performing the assurance procedures, we have not conducted an audit or review of the historical financial information used in the process of preparation of the Remuneration Report and therefore we do not accept any responsibility for the issuance or update of any reports or opinions on historical financial information of the Company.

We believe that the evidence we have obtained is sufficient and appropriate to provide a basis for our conclusion expressed below.

Conclusion (assessment)

In our opinion, the Remuneration Report is complete and complies, in all material aspects, with the applicable requirements contained in the Basis for Preparation.

Restrictions of use

This report has been prepared by PricewaterhouseCoopers Polska spółka z ograniczoną odpowiedzialnością Audyt sp. k. for the General Shareholders' Meeting, the Supervisory Board and the Management Board of the Company and is intended solely to fulfil the purpose described in the section "Description of the subject matter and applicable criteria". It should not be used for any other purpose.

In connection with this report, PricewaterhouseCoopers Polska spółka z ograniczoną odpowiedzialnością Audyt sp. k. does not accept any liability resulting from contractual and non-contractual relationships (including for negligence) with entities other than the Company. The above does not relieve us of liability where such release is excluded by law.

The Management Board of the Company is responsible for publishing the Remuneration Report on the Company's website and for providing access to it free of charge for at least 10 years from the date of the general meeting at which the resolution evaluating the Remuneration Report was adopted, and for the reliability of information on the Company's website. The scope of our work does not include an assessment of these matters. Accordingly, we are not responsible for any changes that may have been made to the information which is the subject of our assessment or for differences, if any, between the information covered by our report and the information provided on the Company's website.

Acting on behalf of PricewaterhouseCoopers Polska spółka z ograniczoną odpowiedzialnością Audyt sp.k., a company entered on the list of entities authorised to audit financial statements under number 144:

Konrad Hołyst

Statutory Auditor License no 13709

Warsaw, 16 May 2025