Company: SQM
Filing Date: 2025-11-19
Form Type: 6-K
Source: 0000909037-25-000042
Chunk: 0

Company: CHEMICAL & MINING CO OF CHILE INC
Filing Date: 2025-11-19
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 September 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

| Highlights                                                                                                                                                                                           |
| •SQM reported total revenues for the nine months ended September 30, 2025 of US$3,252.4 million compared to total revenues of  US$3,455.0 million for the same period last year.                     |
| •Net income for the nine months ended September 30, 2025 of US$404.4 million or US$1.42 per share, compared to net loss of  US$(524.5) million or US$(1.84) per share for the same period last year. |
| •In lithium: Record quarterly sales volumes                                                                                                                                                          |
| •Strong price environment in iodine and nitrates                                                                                                                                                     |
| •Updated capex plan                                                                                                                                                                                  |
| SQM will hold a conference call to discuss these results on Wednesday, November 19, 2025 at 10:00am EST (12:00pm Chile time).                                                                        |
| Participant Call link: https://register-conf.media-server.com/register/BIec9fb4bccb5048a79213bcc7ea3188e1                                                                                            |
| Webcast: https://edge.media-server.com/mmc/p/aybqkpgm                                                                                                                                                |

Santiago, Chile - November 18, 2025 - Sociedad Química y Minera de Chile S.A. (SQM) (NYSE: SQM; Santiago Stock Exchange: SQM-B, SQM-A) reported today net income for the nine months ended September 30, 2025, of US$404.4 million or US$1.42 per share, compared to