SQM appoints Hernán Büchi Buc as vice chair

Sociedad Química y Minera de Chile (SQM) reports a change in its board leadership.

Accepted by SEC EDGAR 05/27/2026 - 08:41 AM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

Sociedad Química y Minera de Chile (SQM) reports a change in its board leadership. As of May 26, 2026, Mr. Gonzalo Guerrero Yamamoto resigned from his role as Vice Chairman of the Board of Directors. At an ordinary board meeting held the same day, the board appointed Mr. Hernán Büchi Buc as the new Vice Chairman. SQM notes that it remains a global producer of lithium, iodine and potassium nitrate, serving industries such as health, nutrition, renewable energy and technology.

Key Figures

Commission File Number: 33-65728 Form month: May 2026 Board change date: May 26, 2026 +1 more

4 metrics

Commission File Number 33-65728 SEC registration reference in Form 6-K

Form month May 2026 Reporting month for Form 6-K

Board change date May 26, 2026 Effective date of vice chair resignation and appointment

Principal office phone (562) 2425-2000 Contact number for Santiago, Chile headquarters

Key Terms

foreign private issuer, Form 6-K, Form 20-F, Vice Chairman of the Board, +1 more

5 terms

foreign private issuer regulatory

"REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16"

A foreign private issuer is a company organized outside the United States that meets tests showing it is primarily foreign-controlled and therefore qualifies for a different set of U.S. reporting rules. For investors, that means the company files less frequent or differently formatted disclosures with U.S. regulators and may follow home-country accounting and governance practices, so buying its stock is like dining at a well-reviewed restaurant that follows its home kitchen’s rules instead of the local menu — you get access but should check what standards apply.

Form 6-K regulatory

"Form 6-K REPORT OF FOREIGN PRIVATE ISSUER"

A Form 6-K is a report that companies listed in certain countries file to provide important updates, such as financial results, corporate changes, or other significant information, to regulators and investors. It functions like an official company update or news release, helping investors stay informed about developments that could affect their investment decisions.

Form 20-F regulatory

"whether the registrant files or will file annual reports under cover of Form 20-F"

Form 20-F is the standardized annual disclosure that non-U.S. companies must file with the U.S. securities regulator when their shares are traded in the U.S.; it contains audited financial statements, a plain-language description of the business, management discussion, governance details and key risk factors. It matters to investors because it provides a consistent, comparable company “report card” and rulebook, helping buyers assess financial health, governance and risks before investing.

Vice Chairman of the Board financial

"has submitted his resignation from his position as Vice Chairman of the Company’s Board of Directors"

Securities Exchange Act of 1934 regulatory

"UNDER THE SECURITIES EXCHANGE ACT OF 1934"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What board change did SQM (SQM) disclose in this Form 6-K?

SQM disclosed that Gonzalo Guerrero Yamamoto resigned as Vice Chairman of the Board. On the same day, the board appointed Hernán Büchi Buc as the new Vice Chairman, signaling a leadership change at the board level.

Who resigned as Vice Chairman of SQM’s board in May 2026?

Gonzalo Guerrero Yamamoto resigned as Vice Chairman of SQM’s Board of Directors. His resignation was effective as of May 26, 2026, according to the company’s Form 6-K report filed as a foreign private issuer.

Who was appointed Vice Chairman of SQM (SQM) after the resignation?

After the resignation, SQM’s board appointed Hernán Büchi Buc as Vice Chairman. The decision was made at an ordinary board meeting held on May 26, 2026, reflecting continuity in the company’s board leadership structure.

What type of SEC filing did SQM use to report this board change?

SQM used a Form 6-K to report the board change as a foreign private issuer. The report was filed under the Securities Exchange Act of 1934 and indicates the company files its annual reports on Form 20-F.

On which stock exchanges are SQM shares listed?

SQM shares are listed on the New York Stock Exchange and the Santiago Stock Exchange. The company trades under the symbol SQM on the NYSE and under SQM-B and SQM-A on the Santiago Stock Exchange, reflecting its dual listing structure.

What markets does SQM aim to lead according to the filing?

SQM aims to maintain a leading world position in the lithium, iodine and potassium nitrate markets. These products support industries such as health, nutrition, renewable energy and technology, positioning the company in several growth-oriented sectors.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

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 May 2026.

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)

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

CHANGES TO THE BOARD OF DIRECTORS: NEW VICE CHAIR APPOINTED AT SQM

Santiago, Chile – May 26, 2026 – Sociedad Química y Minera de Chile S.A. (SQM) (NYSE: SQM; Santiago Stock Exchange: SQM-B, SQM-A) informs that, as of this date, Mr. Gonzalo Guerrero Yamamoto has submitted his resignation from his position as Vice Chairman of the Company’s Board of Directors. At an ordinary meeting held today, the Board of Directors appointed Mr. Hernán Büchi Buc as Vice Chairman of the Board.

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 through innovation and technological development. We aim to maintain our leading world position in the lithium, iodine, and potassium nitrate markets.

For further information, contact:

Gerardo Illanes: gerardo.illanes@sqm.com

Isabel Bendeck: isabel.bendeck@sqm.com

Megan Suitor: megan.suitor@sqm.com

Media contacts:

Lithium Division: Ignacia Lopez / ignacia.lopez@novandino.com

Iodine- Plant Nutrition Division: Carolina Guzman / carolina.guzman@sqm.com

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

			CHEMICAL AND MINING COMPANY OF CHILE INC.
			(Registrant)
Date: May 26, 2026			/s/ Gerardo Illanes
			By: Gerardo Illanes
			CFO

Persons who are to respond to the collection of information contained SEC 1815 (04-09) in this form are not required to respond unless the form displays currently valid OMB control number.