Lundin Mining Corporation — Proxy Solicitation & Information Statement 2026

Apr 2, 2026

Notice of Meeting of Shareholders and Availability of Proxy Materials

You are invited to the Annual Meeting of the shareholders (the "Meeting") of Lundin Mining Corporation ("we", "our", the "Corporation", the "Company" or "Lundin Mining"). The Meeting will be held:

Date	Thursday May 7, 2026
Time	1:30 p.m. (Vancouver time)
4:30 p.m. (Toronto time)
Location – Hybrid Meeting	Live audio webcast online:
www.virtualshareholdermeeting.com/LUN2026

In person:
1055 Dunsmuir Street, Suite 2800,
Bentall IV, Vancouver, BC, V7X 1L2 |

We are using "Notice and Access" to provide you with easy electronic access to our Management Proxy Circular (the "Circular"), other Meeting materials and with copies of our audited consolidated financial statements for the year ended December 31, 2025 and the auditors' report thereon together with the associated management's discussion and analysis (our "2025 Annual Report"), rather than mailing paper copies. Shareholders who have not provided standing instructions to receive Meeting materials by mail are receiving this notification, along with either a form of proxy or voting instruction form, so they can provide their voting instructions. This electronic delivery system is environmentally friendly and saves money.

The purpose of the Meeting is:

• To receive the audited consolidated financial statements of the Corporation for the year ended December 31, 2025 and the report of the auditors thereon;
• To elect the directors for the ensuing year;
• To appoint PricewaterhouseCoopers LLP, Chartered Professional Accountants, as auditors of the Corporation for the ensuing year, and to authorize the directors to fix the remuneration to be paid to the auditors;
• To provide shareholders with an advisory vote on the Corporation's approach to executive compensation;
• To vote on the shareholder proposal contained in this Circular; and
• To transact such further and other business as may properly be brought before the Meeting or any adjournment or postponement thereof.

The Circular provides additional information relating to the above items for consideration at the Meeting under the heading "Business of the Meeting" beginning on page 12.

How can I participate during the meeting?

To facilitate increased shareholder attendance and participation, we have made arrangements to enable shareholders and proxyholders to attend and vote at this year's Meeting either online or in person. The Corporation is conducting a hybrid annual meeting of shareholders that will allow registered shareholders as of March 9, 2026 and duly appointed proxyholders (including beneficial shareholders who have properly appointed themselves as proxyholder) to participate either online or in person.

Should you choose to attend and participate online at www.virtualshareholdermeeting.com/LUN2026, you will be able to access the Meeting using an internet connected device such as a laptop, computer, tablet or mobile phone. The online meeting platform will be supported across browsers and devices that are running the most updated version of the applicable software plugins.

It is important that you review the detailed information on how shareholders can participate in and vote at the Meeting starting on page 6 of the Circular. The procedures are different for registered and beneficial shareholders. You should carefully review this information well in advance of the Meeting.

Registered shareholders and duly appointed proxyholders (including beneficial shareholders who have properly appointed themselves as proxyholder) will be entitled to attend, ask questions and vote at the Meeting, whether in person or online, all in 'real time'. Beneficial shareholders who do not duly appoint themselves as proxyholder may attend and ask questions at the Meeting, whether online or in person, but will not be able to vote at the Meeting. Registered guests may attend the Meeting, whether online or in person, but will not be able to participate in, ask questions, or vote at the Meeting. Registered shareholders and duly appointed proxyholders participating in the Meeting online must remain connected to the internet at all times during the Meeting in order to vote when balloting commences. It is the registered shareholder's and duly appointed proxyholder's responsibility to ensure internet connectivity for the duration of the Meeting. Shareholders are encouraged to vote in advance using any of the methods below.

Lundin Mining 2026 Notice of Annual Meeting and Management Proxy Circular

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Lundin Mining 2026 Notice of Annual Meeting and Management Proxy Circular

How do I vote my shares?

Registered shareholders and proxyholders (including beneficial shareholders who have properly appointed themselves as proxyholder) attending the Meeting can vote online or in person at the Meeting. Detailed information on how shareholders can participate in and vote at the Meeting starts on page 6 of the Circular. This includes information on how beneficial shareholders can appoint themselves as proxyholder. The procedures are different for registered and beneficial shareholders, so you should review this information carefully well in advance of the Meeting. Registered guests may attend the Meeting online or in person but will not be able to participate in, ask questions, or vote at the Meeting.

You may vote in advance by proxy in any of the following ways. You will need the 16-digit control number contained in the accompanying form of proxy or voting instruction form in order to vote in advance or to appoint a proxyholder (including beneficial shareholders wishing to appoint themselves as proxyholder to attend and vote at the Meeting).

	Vote by calling the toll-free number shown on the form of proxy or voting instruction form
	Vote online at www.proxyvote.com or scan the QR Code on the form of proxy or voting instruction form to access the website
	Complete the form of proxy or voting instruction form and return it in the envelope provided

To be valid, your vote or proxy appointment must be received by Broadridge Financial Solutions Inc., by no later than 1:30 p.m. (Vancouver time) / 4:30 p.m. (Toronto time) on May 5, 2026, or, if the Meeting is adjourned or postponed, not less than 48 hours (not including Saturdays, Sundays or applicable Canadian holidays) prior to the reconvened Meeting (the "proxy deadline"). Non-registered shareholders should return their voting instruction forms to their intermediary using one of the above methods by the date specified in their voting instruction form, and in any case at least one business day in advance of the proxy deadline (or such earlier deadline as your intermediary may specify on your form of proxy or voting instruction form). The Corporation reserves the right to accept late proxies and to waive the proxy deadline, with or without notice, but is under no obligation to accept or reject any late proxy.

How do I get an electronic copy of the Circular?

Electronic copies of the Circular and our 2025 Annual Report may be accessed online on the Corporation's website at www.lundinmining.com/investors/corporate-filings or under the Corporation's profile on the System for Electronic Data Analysis and Retrieval + ("SEDAR+") at www.sedarplus.com.

How do I get a paper copy of the Circular?

In addition to being able to instantly view or print the Circular and/or our 2025 Annual Report online at our website, shareholders can request that a paper copy of the documents be sent by regular postal delivery, free of charge. Requests may be made by phone at 1-877-907-7643 by entering the 16-digit control number from your form of proxy or voting instruction form. If the 16-digit control number is not available, shareholders can request a paper copy at 1-844-916-0609 (English), 1-844-973-0593 (French) or outside of North America at 1-303-562-9305 (English), 1-303-562-9306 (French).

To receive the Meeting materials prior to the proxy deadline and the Meeting, you should make your request before 2:00 p.m. (Vancouver time) / 5:00 p.m. (Toronto time) on April 24, 2026. For requests received on or after the date of the Meeting, please call 604-806-3074 and a paper copy will be mailed to you within 10 calendar days after receiving your request.

The Meeting materials will also remain available at www.lundinmining.com/investors/corporate-filings for a period of at least one year after SEDAR+ filing.

If you request paper copies of the Meeting materials, please keep your form of proxy or voting instruction form – you will not be sent another copy.

This notice is not a ballot or form of proxy. You cannot use this notice to vote your shares. This communication presents only an overview of the more complete proxy materials that are available to you on the internet.

We strongly encourage you to review the Circular and to vote well in advance of the Meeting. If you have any questions concerning Notice and Access, please call 1-844-916-0609 (English) or 1-844-973-0593 (French) or outside of North America at 1-303-562-9305 (English), 1-303-562-9306 (French). The contents of the Circular and the sending thereof to the shareholders have been approved by the Corporation's board of directors.

DATED at Vancouver, British Columbia this 9th day of March 2026.

BY ORDER OF THE BOARD OF DIRECTORS

Vlada Cvijetinovic
Vice President, Legal and Corporate Secretary