Board change: SQM (NYSE: SQM) names Hernán Büchi Buc vice chair
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.
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Key Figures
Commission File Number: 33-65728
Form month: May 2026
Board change date: May 26, 2026
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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"
AI-generated analysis. How Rhea-AI works. Not financial advice.
FAQ
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.
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.