Annual General Meeting

CEO's Presentation

Iván Arriagada

Chief Executive Officer

11 May 2022

Developing mining for a better future

Cautionary statement

This presentation has been prepared by Antofagasta plc. By reviewing and/or attending this presentation you agree to the following conditions:

This presentation contains forward-looking statements. All statements other than historical facts are forward-looking statements. Examples of forward- looking statements include those regarding the Group's strategy, plans, objectives or future operating or financial performance; reserve and resource estimates; commodity demand and trends in commodity prices; growth opportunities; and any assumptions underlying or relating to any of the foregoing. Words such as "intend", "aim", "project", "anticipate", "estimate", "plan", "believe", "expect", "may", "should", "will", "continue" and similar expressions identify forward-looking statements. Forward-looking statements involve known and unknown risks, uncertainties, assumptions and other factors that are beyond the Group's control. Given these risks, uncertainties and assumptions, actual results could differ materially from any future results expressed or implied by these forward-looking statements, which apply only as of the date of this presentation. Important factors that could cause actual results to differ from those in the forward-looking statements include: global economic conditions; demand, supply and prices for copper; long-term commodity price assumptions, as they materially affect the timing and feasibility of future projects and developments; trends in the copper mining industry and conditions of the international copper markets; the effect of currency exchange rates on commodity prices and operating costs; the availability and costs associated with mining inputs and labour; operating or technical difficulties in connection with mining or development activities; employee relations; litigation; and actions and activities of governmental authorities, including changes in laws, regulations or taxation. Except as required by applicable law, rule or regulation, the Group does not undertake any obligation to publicly update or revise any forward-looking statements, whether as a result of new information, future events or otherwise.

Certain statistical and other information about Antofagasta plc included in this presentation is sourced from publicly available third party sources. Such information presents the views of those third parties and may not necessarily correspond to the views held by Antofagasta plc.

This presentation is for information purposes only and does not constitute an offer to sell or the solicitation of an offer to buy shares in Antofagasta plc or any other securities in any jurisdiction. Further it does not constitute a recommendation by Antofagasta plc or any other person to buy or sell shares in Antofagasta plc or any other securities.

Past performance cannot be relied on as a guide to future performance.

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Our purpose: Developing mining for a better future

Safety and health Our top priority

Safety performance: Fatalities, HPI and LTIFR 316

2017

1

1

2018

2019

2020

High Potential Incidents (HPI)

2021

Lost Time Injury Frequency Rate (LTIFR)

Fatalities

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Our people

Promoting diversity and inclusion

Female employee participation1 17.2%

2017

2018

2019

2020

1 Direct employees only. Excludes contractors

2021

25.5%

Employees

74.5%

Contractors

17.2%

Female employees1

77%

of employees unionised

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Antofagasta plc published this content on 11 May 2022 and is solely responsible for the information contained therein. Distributed by Public, unedited and unaltered, on 11 May 2022 13:31:00 UTC.