Production Miss in 2Q but Full-Year Guidance Unchanged

Research evidence excerpt

Production Miss in 2Q but Full-Year Guidance Unchanged

ces and trading securities held by a research

analyst.

As is the case with all Jefferies employees, the analyst(s) responsible for the coverage of the financial instruments discussed in this report receives compensation

based in part on the overall performance of the firm, including investment banking income. We seek to update our research as appropriate, but various regulations

may prevent us from doing so. Aside from certain industry reports published on a periodic basis, the large majority of reports are published at irregular intervals

as appropriate in the analyst's judgement.

Investment Recommendation Record

(Article 3(1)e and Article 7 of MAR)

Recommendation Published July 15, 2026 3:12 A.M.

Recommendation Distributed July 15, 2026 3:12 A.M.

Company Specific Disclosures

Jefferies Financial Group Inc., its affiliates or subsidiaries make a market in the securities or ADRs of Antofagasta.

Explanation of Jefferies Ratings

Buy - Describes securities that we expect to provide a total return (price appreciation plus yield) of 15% or more within a 12-month period.

Hold - Describes securities that we expect to provide a total return (price appreciation plus yield) of plus 15% or minus 10% within a 12-month period.

Underperform - Describes securities that we expect to provide a total return (price appreciation plus yield) of minus 10% or less within a 12-month period.

The expected total return (price appreciation plus yield) for Buy rated securities with an average security price consistently below $10 is 20% or more within a 12-

month period as these companies are typically more volatile than the overall stock market. For Hold rated securities with an average security price consistently