{"filing":{"accession_number":"0000071829-26-000047","cik":"0000071829","ticker":"NPKI","company_name":"NPK International Inc.","form":"8-K","filing_date":"2026-09-02","report_date":"2026-08-28","primary_document":"nr-20260828.htm","primary_document_url":"https://www.sec.gov/Archives/edgar/data/71829/000007182926000047/nr-20260828.htm"},"events":[{"id":31326,"run_id":28739,"accession_number":"0000071829-26-000047","anchor_item_number":"5.02","event_type":"exec_departure","event_domain":"governance","is_material":true,"confidence":0.72,"summary":"The filing centers on Gregg Piontek's announced retirement as Senior Vice President and CFO after nearly 20 years of service, effective on or before August 31, 2027. While the filing also discloses Matthew Warren's appointment as Chief Accounting Officer and associated compensation arrangements, the principal disclosed action is Piontek's departure from a senior executive role. The press release emphasizes his long tenure and contributions, and the Company is conducting a formal search for his successor, signaling this is a material leadership transition.","company_name":"NPK International Inc.","ticker":"NPKI","filing_date":"2026-09-02","form":"8-K","submitted_at":null,"items":[{"id":34171,"accession_number":"0000071829-26-000047","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_departure","event_domain":"governance","is_material":true,"confidence":0.72,"reasoning":"The filing centers on Gregg Piontek's announced retirement as Senior Vice President and CFO after nearly 20 years of service, effective on or before August 31, 2027. While the filing also discloses Matthew Warren's appointment as Chief Accounting Officer and associated compensation arrangements, the principal disclosed action is Piontek's departure from a senior executive role. The press release emphasizes his long tenure and contributions, and the Company is conducting a formal search for his successor, signaling this is a material leadership transition.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-02T20:26:55.025189+00:00","company_name":"","ticker":null,"filing_date":""}]}],"classifications":[{"id":34171,"accession_number":"0000071829-26-000047","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_departure","event_domain":"governance","is_material":true,"confidence":0.72,"reasoning":"The filing centers on Gregg Piontek's announced retirement as Senior Vice President and CFO after nearly 20 years of service, effective on or before August 31, 2027. While the filing also discloses Matthew Warren's appointment as Chief Accounting Officer and associated compensation arrangements, the principal disclosed action is Piontek's departure from a senior executive role. The press release emphasizes his long tenure and contributions, and the Company is conducting a formal search for his successor, signaling this is a material leadership transition.","classifier_version":"claude-haiku-4-5-20251001+prompt-a85dd512","taxonomy_version":"v1.3","classified_at":"2026-09-02T20:26:55.025189+00:00","company_name":"NPK International Inc.","ticker":"NPKI","filing_date":"2026-09-02"}]}