SQM · Sociedad Química y Minera de Chile S.A.

Summary

SQM filed consents from qualified persons and technical report summaries for Nueva Victoria, Pampa Blanca, Maria Elena, and Pampa Orcoma operations supporting its 2025 Form 20-F, disclosing updated mineral resources and reserves as of December 31, 2025.

Key takeaways

• Consents provided by Marco Fazzi (Mineral Resources & Long Term Planning Manager SQM) and Jesús Casas de Prada (QP, Extractive Metallurgy Consultant) for multiple technical report summaries.
• Technical reports cover Nueva Victoria (Operation Report), Pampa Orcoma (Feasibility Study), Maria Elena (Operation Report), and Pampa Blanca (Operation Report), effective March 31, 2026.
• Nueva Victoria: Proven reserves 815 Mt (4.42% nitrate, 302 ppm iodine); Probable reserves 237 Mt (5.25% nitrate, 363 ppm iodine).
• Pampa Blanca: Proven reserves 76.4 Mt (5.39% nitrate, 399 ppm iodine).
• Maria Elena: Proven reserves 139 Mt (5.0% nitrate, 340 ppm iodine); Probable reserves 496 Mt (4.7% nitrate, 368 ppm iodine).
• All reserves reported before exploitation losses with caliche thickness ≥2.0m and slope ≤8%.