Company: SQM
Filing Date: 2025-04-29
Form Type: 6-K
Source: 0000909037-25-000024
Chunk: 0

Company: CHEMICAL & MINING CO OF CHILE INC
Filing Date: 2025-04-29
Form: 6-K
Chunk 0
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### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION
<div align='center'>Washington, D.C. 20549

Form 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16 UNDER THE

SECURITIES EXCHANGE ACT OF 1934

For the month of April 2025.

Commission File Number 33-65728

CHEMICAL AND MINING COMPANY OF CHILE INC.

(Translation of registrant’s name into English)

El Trovador 4285, Santiago, Chile (562) 2425-2000

(Address of principal executive office)</div>

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F:_ X _ Form 40-F

### FISCALIA NACIONAL ECONOMICA REFERS TO PARTNERSHIP AGREEMENT BETWEEN SQM AND CODELCO

#### Santiago, Chile, April 24, 2025
– Sociedad Química y Minera de Chile S.A. (“SQM” or the “Company”) (NYSE: SQM; Santiago Stock Exchange: SQM-A, SQM-B) informs that on the evening of April 23, 2025, the Chilean Antitrust Authority (in Chile named Fiscalia Nacional Económica or “FNE”) approved Phase 1 of the public-private partnership agreement between Codelco and SQM, subject to compliance with certain mitigation measures.

The FNE's investigation focused on the production and marketing of lithium. In this context, the FNE ruled out various risks; however, it warned that the implementation of the Partnership would entail the creation of a new structural link between current and future players in the lithium industry. In response, measures standard for this type of transaction were agreed upon, such as information management protocols and the configuration of the Partnership's corporate governance.

This approval is a very important step for the future implementation of the Partnership and adds to those already issued by the antitrust authorities of Brazil, South Korea, Japan, Saudi Arabia, and the European Union.

The FNE's report and approval resolution, along with the mitigation measures, will be available on the FNE and Company websites once the respective public versions have been prepared.

About SQM

SQM is a global company that is listed on the New York Stock Exchange and the Santiago Stock Exchange (NYSE: SQM;