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[8-K] KAISER ALUMINUM CORP Reports Material Event

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8-K
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Kaiser Aluminum Corporation furnished an 8-K announcing preliminary, unaudited financial results for the quarter ended September 30, 2025. The results are provided via a press release attached as Exhibit 99.1 and incorporated by reference into Item 2.02.

The Item 2.02 information, including Exhibit 99.1, is furnished and not deemed “filed” under Section 18 of the Exchange Act, and is not incorporated into other filings unless specifically stated. Exhibits include the press release and the Inline XBRL cover page file.

Kaiser Aluminum Corporation ha diffuso un 8-K che annuncia risultati finanziari preliminari e non auditati per il trimestre terminato il 30 settembre 2025. I risultati sono forniti tramite un comunicato stampa allegato come Allegato 99.1 e incorporato per riferimento nell'Elemento 2.02.

Le informazioni dell'Elemento 2.02, inclusa l'allegato 99.1, sono fornite e non considerate «depositate» ai sensi della Sezione 18 della Exchange Act, e non sono incorporate in altri documenti a meno che non sia specificato espressamente. Gli allegati includono il comunicato stampa e il file della pagina di copertina Inline XBRL.

Kaiser Aluminum Corporation difundió un 8-K anunciando resultados financieros preliminares no auditados para el trimestre terminado el 30 de septiembre de 2025. Los resultados se proporcionan a través de un comunicado de prensa adjunto como el Exhibit 99.1 e incorporado por referencia en el Artículo 2.02.

La información del Artículo 2.02, incluida la Exhibit 99.1, se entrega y no se considera “presentada” bajo la Sección 18 de la Exchange Act, y no se incorpora a otros archivos salvo indicación específica. Los anexos incluyen el comunicado de prensa y el archivo de la portada Inline XBRL.

Kaiser Aluminum Corporation은(는) 2025년 9월 30일 종료된 분기에 대한 예비 비감사 재무 실적을 발표하는 8-K를 제공했습니다. 결과는 Exhibit 99.1로 첨부된 보도 자료를 통해 제공되며 Item 2.02에 참조로 통합됩니다.

Exhibit 99.1을 포함한 Item 2.02 정보는 Exchange Act의 섹션 18에 따라 “제출된” 것으로 간주되지 않으며, 특별히 명시되지 않는 한 다른 제출물에 통합되지 않습니다. 첨부 자료에는 보도 자료와 Inline XBRL 커버 페이지 파일이 포함됩니다.

Kaiser Aluminum Corporation a publié un 8-K annonçant des résultats financiers préliminaires et non audités pour le trimestre se terminant le 30 septembre 2025. Les résultats sont fournis via un communiqué de presse joint en tant que Exhibit 99.1 et incorporés par référence dans l'Article 2.02.

Les informations de l'Article 2.02, y compris l'Exhibit 99.1, sont fournies et ne sont pas considérées comme « déposées » au sens de la Section 18 de la Exchange Act, et ne sont pas intégrées dans d'autres dépôts à moins d'indication spécifique. Les pièces jointes comprennent le communiqué de presse et le fichier de la page de couverture Inline XBRL.

Kaiser Aluminum Corporation hat eine 8-K veröffentlicht, die vorläufige, unaudited Finanzresultate für das Quartal zum 30. September 2025 ankündigt. Die Ergebnisse werden über eine Pressemitteilung bereitgestellt, die als Exhibit 99.1 beigefügt ist und per Bezug in Punkt 2.02 aufgenommen wurde.

Die Informationen von Punkt 2.02, einschließlich Exhibit 99.1, werden bereitgestellt und gelten nicht als „eingeführt“ gemäß Abschnitt 18 des Exchange Act und werden nicht in andere Einreichungen aufgenommen, es sei denn, dies wird ausdrücklich angegeben. Zu den Anhängen gehören die Pressemitteilung und die Inline XBRL-Cover-Seite-Datei.

Kaiser Aluminum Corporation قدمت شهادة 8-K تعلن عن نتائج مالية أولية غير مدققة للربع المنتهي في 30 سبتمبر 2025. وتُقدم النتائج من خلال بيان صحفي مرفق كـ Exhibit 99.1 ومُدرج بالإشارة في البند 2.02.

المعلومات الخاصة بالبند 2.02، بما في ذلك Exhibit 99.1، مُقدمة وليست مُعتَبَرَة «مُسجَّلة» وفقاً للقسم 18 من قانون التداول، وليست مدمجة في ملفات أخرى ما لم ينص صراحة على ذلك. تشمل الملاحق البيان الصحفي وملف صفحة الغلاف Inline XBRL.

Positive
  • None.
Negative
  • None.

Kaiser Aluminum Corporation ha diffuso un 8-K che annuncia risultati finanziari preliminari e non auditati per il trimestre terminato il 30 settembre 2025. I risultati sono forniti tramite un comunicato stampa allegato come Allegato 99.1 e incorporato per riferimento nell'Elemento 2.02.

Le informazioni dell'Elemento 2.02, inclusa l'allegato 99.1, sono fornite e non considerate «depositate» ai sensi della Sezione 18 della Exchange Act, e non sono incorporate in altri documenti a meno che non sia specificato espressamente. Gli allegati includono il comunicato stampa e il file della pagina di copertina Inline XBRL.

Kaiser Aluminum Corporation difundió un 8-K anunciando resultados financieros preliminares no auditados para el trimestre terminado el 30 de septiembre de 2025. Los resultados se proporcionan a través de un comunicado de prensa adjunto como el Exhibit 99.1 e incorporado por referencia en el Artículo 2.02.

La información del Artículo 2.02, incluida la Exhibit 99.1, se entrega y no se considera “presentada” bajo la Sección 18 de la Exchange Act, y no se incorpora a otros archivos salvo indicación específica. Los anexos incluyen el comunicado de prensa y el archivo de la portada Inline XBRL.

Kaiser Aluminum Corporation은(는) 2025년 9월 30일 종료된 분기에 대한 예비 비감사 재무 실적을 발표하는 8-K를 제공했습니다. 결과는 Exhibit 99.1로 첨부된 보도 자료를 통해 제공되며 Item 2.02에 참조로 통합됩니다.

Exhibit 99.1을 포함한 Item 2.02 정보는 Exchange Act의 섹션 18에 따라 “제출된” 것으로 간주되지 않으며, 특별히 명시되지 않는 한 다른 제출물에 통합되지 않습니다. 첨부 자료에는 보도 자료와 Inline XBRL 커버 페이지 파일이 포함됩니다.

Kaiser Aluminum Corporation a publié un 8-K annonçant des résultats financiers préliminaires et non audités pour le trimestre se terminant le 30 septembre 2025. Les résultats sont fournis via un communiqué de presse joint en tant que Exhibit 99.1 et incorporés par référence dans l'Article 2.02.

Les informations de l'Article 2.02, y compris l'Exhibit 99.1, sont fournies et ne sont pas considérées comme « déposées » au sens de la Section 18 de la Exchange Act, et ne sont pas intégrées dans d'autres dépôts à moins d'indication spécifique. Les pièces jointes comprennent le communiqué de presse et le fichier de la page de couverture Inline XBRL.

Kaiser Aluminum Corporation hat eine 8-K veröffentlicht, die vorläufige, unaudited Finanzresultate für das Quartal zum 30. September 2025 ankündigt. Die Ergebnisse werden über eine Pressemitteilung bereitgestellt, die als Exhibit 99.1 beigefügt ist und per Bezug in Punkt 2.02 aufgenommen wurde.

Die Informationen von Punkt 2.02, einschließlich Exhibit 99.1, werden bereitgestellt und gelten nicht als „eingeführt“ gemäß Abschnitt 18 des Exchange Act und werden nicht in andere Einreichungen aufgenommen, es sei denn, dies wird ausdrücklich angegeben. Zu den Anhängen gehören die Pressemitteilung und die Inline XBRL-Cover-Seite-Datei.

Kaiser Aluminum Corporation قدمت شهادة 8-K تعلن عن نتائج مالية أولية غير مدققة للربع المنتهي في 30 سبتمبر 2025. وتُقدم النتائج من خلال بيان صحفي مرفق كـ Exhibit 99.1 ومُدرج بالإشارة في البند 2.02.

المعلومات الخاصة بالبند 2.02، بما في ذلك Exhibit 99.1، مُقدمة وليست مُعتَبَرَة «مُسجَّلة» وفقاً للقسم 18 من قانون التداول، وليست مدمجة في ملفات أخرى ما لم ينص صراحة على ذلك. تشمل الملاحق البيان الصحفي وملف صفحة الغلاف Inline XBRL.

Kaiser Aluminum Corporation 已发布一份8-K,宣布截至2025年9月30日季度的初步、未经审计的财务业绩。结果通过附带为Exhibit 99.1的新闻稿提供,并被通过引用并入到事项2.02中。

事项2.02的信息,包括Exhibit 99.1,被提供且不被视为根据交易法第18条“已备案”,且除非另有明确说明,否则不并入其他备案。附件包括新闻稿和Inline XBRL封面页面文件。

0000811596falseKAISER ALUMINUM CORP00008115962025-10-222025-10-22

 

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

 

FORM 8-K

 

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): October 22, 2025

 

 

KAISER ALUMINUM CORPORATION

(Exact name of Registrant as Specified in Its Charter)

 

 

Delaware

1-09447

94-3030279

(State or Other Jurisdiction
of Incorporation)

(Commission File Number)

(IRS Employer
Identification No.)

 

 

 

 

 

1550 West McEwen Drive

Suite 500

 

Franklin, Tennessee

 

37067

(Address of Principal Executive Offices)

 

(Zip Code)

 

Registrant’s Telephone Number, Including Area Code: (629) 252-7040

 

Not Applicable

(Former Name or Former Address, if Changed Since Last Report)

 

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:


Title of each class

 

Trading
Symbol(s)

 


Name of each exchange on which registered

Common stock, par value $0.01 per share

 

KALU

 

Nasdaq Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.

 


Item 2.02. Results of Operations and Financial Condition.

On October 22, 2025, Kaiser Aluminum Corporation (the “Company”) issued a press release reporting its preliminary, unaudited financial results for the quarter ended September 30, 2025. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated by reference into this Item 2.02.

The information in Item 2.02, including Exhibit 99.1, of this Current Report on Form 8-K shall not be deemed to be “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, and shall not be deemed incorporated by reference into any filing by the Company under the Securities Act of 1933, as amended, or the Exchange Act, unless specifically identified therein as being incorporated therein by reference.

Item 9.01. Financial Statements and Exhibits.

(d)
Exhibits.

 

Exhibit

Number

Description

99.1

Press release dated October 22, 2025.

104

Cover Page Interactive Data File (embedded within the Inline XBRL document).

 


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 hereunto duly authorized.

 

 

KAISER ALUMINUM CORPORATION

(Registrant)

 

By:

/s/ John M. Donnan

John M. Donnan

Executive Vice President, Chief Administrative Officer and General Counsel

 

Date: October 22, 2025

 


Kaiser Aluminum

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Aluminum
Rolling Drawing & Extruding of Nonferrous Metals
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United States
FRANKLIN