{"filing":{"accession_number":"0001193125-26-354093","cik":"0000811596","ticker":"KALU","company_name":"KAISER ALUMINUM CORP","form":"8-K","filing_date":"2026-08-17","report_date":"2026-08-12","primary_document":"kalu-20260812.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/811596/000119312526354093/kalu-20260812.htm"},"events":[{"id":28280,"run_id":25857,"accession_number":"0001193125-26-354093","anchor_item_number":"5.02","event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.92,"summary":"Fred Stephan was appointed Chief Executive Officer and President effective November 1, 2026, following a deliberate Board succession process. The appointment includes his election as a Class III director and a comprehensive compensation package ($1.15M base salary, $1.44M short-term incentive target, $4.43M long-term incentive target, plus $3.77M and $2M RSU grants). Keith Harvey transitioned from CEO to Executive Chairman as part of this leadership succession.","company_name":"KAISER ALUMINUM CORP","ticker":"KALU","filing_date":"2026-08-17","form":"8-K","submitted_at":null,"items":[{"id":30168,"accession_number":"0001193125-26-354093","item_number":"5.02","item_title":"Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.","event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.92,"reasoning":"Fred Stephan's appointment as Chief Executive Officer and President effective November 1, 2026, is the principal disclosed action. While the filing also describes Keith Harvey's transition to Executive Chairman (a departure from the CEO role), the central focus is Stephan's appointment to lead the company. The disclosure includes his background, compensation package ($1.15M base, $1.44M short-term incentive target, $4.43M long-term incentive target, plus $3.77M and $2M RSU grants), and board appointment as a Class III director, all hallmarks of a material executive appointment.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-08-17T20:20:52.884287+00:00","company_name":"","ticker":null,"filing_date":""},{"id":30169,"accession_number":"0001193125-26-354093","item_number":"7.01","item_title":"Regulation FD Disclosure.","event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.92,"reasoning":"The filing announces the appointment of Fred Stephan as President and CEO effective November 1, 2026, following a deliberate Board succession process. While Keith Harvey's transition to Executive Chairman also occurs, the principal disclosed action centers on Stephan's appointment to the top executive role. The press release emphasizes Board confidence in Stephan's qualifications and his appointment as a material leadership transition for the company.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-08-17T20:20:52.884287+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":30168,"accession_number":"0001193125-26-354093","item_number":"5.02","item_title":"Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.","event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.92,"reasoning":"Fred Stephan's appointment as Chief Executive Officer and President effective November 1, 2026, is the principal disclosed action. While the filing also describes Keith Harvey's transition to Executive Chairman (a departure from the CEO role), the central focus is Stephan's appointment to lead the company. The disclosure includes his background, compensation package ($1.15M base, $1.44M short-term incentive target, $4.43M long-term incentive target, plus $3.77M and $2M RSU grants), and board appointment as a Class III director, all hallmarks of a material executive appointment.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-08-17T20:20:52.884287+00:00","company_name":"KAISER ALUMINUM CORP","ticker":"KALU","filing_date":"2026-08-17"},{"id":30169,"accession_number":"0001193125-26-354093","item_number":"7.01","item_title":"Regulation FD Disclosure.","event_type":"exec_appointment","event_domain":"governance","is_material":true,"confidence":0.92,"reasoning":"The filing announces the appointment of Fred Stephan as President and CEO effective November 1, 2026, following a deliberate Board succession process. While Keith Harvey's transition to Executive Chairman also occurs, the principal disclosed action centers on Stephan's appointment to the top executive role. The press release emphasizes Board confidence in Stephan's qualifications and his appointment as a material leadership transition for the company.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-08-17T20:20:52.884287+00:00","company_name":"KAISER ALUMINUM CORP","ticker":"KALU","filing_date":"2026-08-17"}]}