Company: SQM
Filing Date: 2025-12-05
Form Type: 6-K
Source: 0000909037-25-000046
Chunk: 0

Company: CHEMICAL & MINING CO OF CHILE INC
Filing Date: 2025-12-05
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 December 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

### SQM ANNOUNCES ISSUANCE OF LOCAL HYBRID BOND

#### Santiago, Chile – December 4, 2025
- Sociedad Química y Minera de Chile S.A. (SQM) (NYSE: SQM; Santiago Stock Exchange: SQM-B, SQM-A) announced today that it has completed the placement of Series S Bonds in the Chilean general securities market for a total amount of UF 10,000,000 (approximately US$430 million). The placement was authorized on November 25, 2025, and is part of a 35-year bond program registered in the Securities Registry of the Commission for the Financial Market (CMF) under No. 1239.

The Series S Bonds (i) mature on February 15, 2058; (ii) will accrue, on the outstanding principal expressed in UF (unidades de fomento), a fixed annual interest rate of 4%, starting November 15, 2025; and (iii) the effective placement rate was 3.84%, which includes a local placement spread over the Central Bank of Chile’s UF-denominated bond of equivalent term of 1.52%.

Proceeds from the placement will be used for general corporate purposes and to refinance existing debt.

About SQM

SQM is a global company that is listed on the New York Stock Exchange and the Santiago Stock Exchange (NYSE: SQM; Santiago Stock Exchange: SQM-B, SQM-A). SQM develops and produces diverse products for several industries essential for human progress, such as health, nutrition, renewable energy and technology