SQM Reports Earnings for the Six Months Ended June 30, 2026

Highlights * SQM reported total revenues for the six months ended June 30, 2026 of US$4,228.5 million compared to total revenues of US$2,079.3 million for the same period last year. * Net income for the six months ended June 30, 2026 of US$1,024.7 million or US$3.59 per share, compared to US$225.9 million or US$0.79 per share for the same period last year. * In lithium: record-high quarterly sales volumes surpassing 84 thousand metric tons of Lithium Carbonate Equivalent (LCE). * In Iodine: record-high sales price and record quarterly revenue. * In Specialty Plant Nutrition: strong sales volumes and solid sales price. * During the first half of 2026, SQM and its subsidiaries accrued over US$1.6 billion in payments to the Chilean State. (i)

SQM will hold a conference call to discuss these results on Wednesday, August 19, 2026 at 12:00pm EDT (12:00pm Chile time). Participant Call link: https://register-conf.media-server.com/register/BI3e9715a0ab7b4208a6ae898954f0797b Webcast: https://edge.media-server.com/mmc/p/s7toz78m