Corporate Governance

Code of Business Conduct and Ethics

The Code of Business Conduct is designed to promote, among other things, honest and ethical conduct, the confidentiality of corporate information, avoidance of conflicts of interest, protection and proper use of corporate assets, and compliance with applicable governmental laws, rules and regulations. It prompts internal reporting of violations of the Code and ensures accountability for adherence to the Code.

Anonymous Whistleblower System

Use the Anonymous Whistleblower System to report any misconduct incident (bad practices, acts of corruption, bribery and illegal or unethical behavior in the workplace) committed by any employee of Adventus Mining Corporation, its subsidiaries or consultants and contractors retained by Adventus and/or any of its subsidiaries.

How to use the Anonymous Whistleblower System:

1. Click on the following link www.thetandemteam.com/whistleblower-adventus
2. Click on the language of your choice.
3. Complete the Online Reporting Form. All fields must be completed.
4. In the "Company Code" field, enter: 7001907
5. Once you complete all the information, click "Submit Report"

Board Committees

• Audit Committee
• Nominating and Corporate Governance Committee
• Compensation Committee

Auditors

• Deloitte, Toronto, Ontario Canada

Audit Committee

The Audit Committee is a standing committee of the board of directors of Adventus Mining Corporation charged with assisting the Board in fulfilling its financial oversight responsibilities by reviewing the financial reports and other financial information provided by the Corporation to regulatory authorities and shareholders, the Corporation's systems of internal controls regarding finance and accounting and the Corporation's auditing, accounting and financial reporting processes.

Nominating and Corporate Governance Committee

The purpose of the Nominating and Corporate Governance Committee is to identify and recommend to the Board of Directors of Adventus Mining Corporation individuals qualified to be nominated for election to the Board and recommend to the Board the members and Chair for each Board committee, and develop and recommend corporate governance principles for the Corporation.

Compensation Committee

The purpose of the Compensation Committee is to assist the board of directors of Adventus Mining Corporation in overseeing compensation and succession planning matters, including the Board’s responsibilities of appointing, compensating and evaluating and planning for the succession of officers and other senior management personnel of the Corporation; and approving the Corporation’s annual compensation budget; and reviewing and approving matters related to the Corporation’s pension plans, if any.

ESTMA

In accordance with the Extractive Sector Transparency Measures Act (“ESTMA”), the following reports of reportable payments have been filed for:

• 2022
• 2021

The Company has advised Natural Resources Canada that it made no reportable payments for the following years:

• 2020
• 2019
• 2018
• 2017