{"schema_version":"secwatch.filing_event.v1","accession":"0001193125-25-115695","form_type":"8-K","ticker":"BRK-B","cik":"0001067983","company_name":"BERKSHIRE HATHAWAY INC","filed_at":"2025-05-08T23:59:59+00:00","discovered_at":"2026-05-14T18:02:47.400659+00:00","generated_at":"2026-05-22T02:59:39.367967+00:00","sec_items":["5.02","9.01"],"event_type":"leadership","sentiment":"neutral","materiality_score":0.75,"calibrated_materiality_score":0.75,"confidence":"high","headline":"Berkshire Hathaway appoints Greg Abel as CEO effective Jan 1, 2026; Buffett remains Chairman","bullets":["Warren Buffett recommends Greg Abel as CEO on May 3; Board unanimously votes May 4.","Greg Abel, age 62, previously Vice Chairman – Non-Insurance Operations since 2018; CEO of BHE 2008-2018.","Greg Abel appointed President and CEO effective January 1, 2026; Warren Buffett remains Chairman.","No family relationship or material transactions between Abel and Berkshire since June 2022."],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-25-115695","json":"https://secwatch.observer/filing/0001193125-25-115695.json","markdown":"https://secwatch.observer/filing/0001193125-25-115695.md","text":"https://secwatch.observer/filing/0001193125-25-115695.txt","edgar_index":"https://www.sec.gov/Archives/edgar/data/1067983/000119312525115695/0001193125-25-115695-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1067983/000119312525115695/d28310d8k.htm"},"model":{"generated_by":"deepseek-v4-flash:cloud@v2","generated_at":"2026-05-22T02:59:39.367967+00:00"},"review":{"review_status":"machine_generated","human_reviewed":false,"corrected":false,"correction_note":null,"correction_timestamp":null,"superseded_by":null,"related_filings":[]},"source_grounded_claims":[{"claim_id":"b541f715b6","claim":"Warren Buffett changed role as Chief Executive Officer at BERKSHIRE HATHAWAY INC.","evidence_excerpt":"On May 3, 2025, Mr. Warren Buffett, Berkshire’s Chairman and CEO, announced that he was going to recommend to Berkshire’s Board of Directors at its meeting to be held on May 4, 2025 that Mr. Greg Abel, Berkshire’s Vice Chairman – Non-Insurance Operations, be appointed Berkshire’s Chief Executive Officer to become effective on January 1, 2026.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1067983/000119312525115695/0001193125-25-115695-index.htm","confidence":0.95},{"claim_id":"b5a3fb86e4","claim":"Greg Abel was appointed as President and CEO at BERKSHIRE HATHAWAY INC.","evidence_excerpt":"On May 4, 2025, Berkshire’s Board of Directors voted unanimously to appoint Mr. Abel to become Berkshire’s President and CEO effective on January 1, 2026.","evidence_source":"SEC 8-K Item 5.02","evidence_url":"https://www.sec.gov/Archives/edgar/data/1067983/000119312525115695/0001193125-25-115695-index.htm","confidence":0.95}],"comparable_filings":[{"accession":"0001193125-26-251709","ticker":"CRVL","company_name":"CORVEL CORP","filed_at":"2026-06-01T21:05:42+00:00","headline":"CorVel CEO Michael Combs to become Executive Chair; Sarah Scott appointed CEO and President effective July 1, 2026","event_type":"leadership","sec_items":["5.02","7.01","9.01"],"materiality_score":0.7,"calibrated_materiality_score":0.7,"match_reasons":["same fact type: executive_change","same SEC item: 5.02, 9.01","same event type: leadership","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-251709","json":"https://secwatch.observer/filing/0001193125-26-251709.json","markdown":"https://secwatch.observer/filing/0001193125-26-251709.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/874866/000119312526251709/0001193125-26-251709-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/874866/000119312526251709/d24231d8k.htm"},"side_by_side_evidence":{"fact_type":"executive_change","source_excerpt":"On May 3, 2025, Mr. Warren Buffett, Berkshire’s Chairman and CEO, announced that he was going to recommend to Berkshire’s Board of Directors at its meeting to be held on May 4, 2025 that Mr. Greg Abel, Berkshire’s Vice Chairman – Non-Insurance Operations, be appointed Berkshire’s Chief Executive Officer to become effective on January 1, 2026.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1067983/000119312525115695/0001193125-25-115695-index.htm","comparable_excerpt":"In connection with the leadership transition, the Board appointed Sarah Scott to serve as Chief Executive Officer and President of the Company, effective July 1, 2026.","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/874866/000119312526251709/0001193125-26-251709-index.htm"}},{"accession":"0001671933-26-000063","ticker":"TTD","company_name":"Trade Desk, Inc.","filed_at":"2026-06-01T20:35:28+00:00","headline":"The Trade Desk appoints Nate Olmstead as CFO effective July 9, 2026; interim CFO Davis resumes CAO role","event_type":"leadership","sec_items":["5.02","9.01"],"materiality_score":0.65,"calibrated_materiality_score":0.65,"match_reasons":["same fact type: executive_change","same SEC item: 5.02, 9.01","same event type: leadership","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0001671933-26-000063","json":"https://secwatch.observer/filing/0001671933-26-000063.json","markdown":"https://secwatch.observer/filing/0001671933-26-000063.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/1671933/000167193326000063/0001671933-26-000063-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1671933/000167193326000063/ttd-20260601.htm"},"side_by_side_evidence":{"fact_type":"executive_change","source_excerpt":"On May 3, 2025, Mr. Warren Buffett, Berkshire’s Chairman and CEO, announced that he was going to recommend to Berkshire’s Board of Directors at its meeting to be held on May 4, 2025 that Mr. Greg Abel, Berkshire’s Vice Chairman – Non-Insurance Operations, be appointed Berkshire’s Chief Executive Officer to become effective on January 1, 2026.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1067983/000119312525115695/0001193125-25-115695-index.htm","comparable_excerpt":"On June 1, 2026, The Trade Desk, Inc. (the “Company”) announced the appointment of Nate Olmstead, age 54, as the Company’s chief financial officer.","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/1671933/000167193326000063/0001671933-26-000063-index.htm"}},{"accession":"0000105770-26-000080","ticker":"WST","company_name":"WEST PHARMACEUTICAL SERVICES INC","filed_at":"2026-06-01T20:32:30+00:00","headline":"West Pharmaceutical appoints Michel Lagarde as CEO; Green retires, Friel becomes Chair","event_type":"leadership","sec_items":["5.02","7.01","9.01"],"materiality_score":0.7,"calibrated_materiality_score":0.7,"match_reasons":["same fact type: executive_change","same SEC item: 5.02, 9.01","same event type: leadership","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0000105770-26-000080","json":"https://secwatch.observer/filing/0000105770-26-000080.json","markdown":"https://secwatch.observer/filing/0000105770-26-000080.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/105770/000010577026000080/0000105770-26-000080-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/105770/000010577026000080/wst-20260531.htm"},"side_by_side_evidence":{"fact_type":"executive_change","source_excerpt":"On May 3, 2025, Mr. Warren Buffett, Berkshire’s Chairman and CEO, announced that he was going to recommend to Berkshire’s Board of Directors at its meeting to be held on May 4, 2025 that Mr. Greg Abel, Berkshire’s Vice Chairman – Non-Insurance Operations, be appointed Berkshire’s Chief Executive Officer to become effective on January 1, 2026.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1067983/000119312525115695/0001193125-25-115695-index.htm","comparable_excerpt":"As of the Start Date, Mr. Green will resign as a member of the Board and Mr. Lagarde will be appointed as a member of the Board to fill that vacancy.","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/105770/000010577026000080/0000105770-26-000080-index.htm"}},{"accession":"0001193125-26-251522","ticker":"VRRM","company_name":"VERRA MOBILITY Corp","filed_at":"2026-06-01T20:29:13+00:00","headline":"Verra Mobility CEO David Roberts steps down amid cost realignment; interim CEO Keyser appointed","event_type":"leadership","sec_items":["5.02","7.01","9.01"],"materiality_score":0.75,"calibrated_materiality_score":0.75,"match_reasons":["same fact type: executive_change","same SEC item: 5.02, 9.01","same event type: leadership","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-251522","json":"https://secwatch.observer/filing/0001193125-26-251522.json","markdown":"https://secwatch.observer/filing/0001193125-26-251522.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/1682745/000119312526251522/0001193125-26-251522-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1682745/000119312526251522/d39754d8k.htm"},"side_by_side_evidence":{"fact_type":"executive_change","source_excerpt":"On May 3, 2025, Mr. Warren Buffett, Berkshire’s Chairman and CEO, announced that he was going to recommend to Berkshire’s Board of Directors at its meeting to be held on May 4, 2025 that Mr. Greg Abel, Berkshire’s Vice Chairman – Non-Insurance Operations, be appointed Berkshire’s Chief Executive Officer to become effective on January 1, 2026.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1067983/000119312525115695/0001193125-25-115695-index.htm","comparable_excerpt":"On June 1, 2026, Verra Mobility Corporation (the “Company”) announced that the Board of Directors of the Company (the “Board”) approved the appointment of Jonathan Keyser as the Interim President and Chief Executive Officer of the Company, effective May 31, 2026.","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/1682745/000119312526251522/0001193125-26-251522-index.htm"}},{"accession":"0001193125-26-251467","ticker":"PENG","company_name":"Penguin Solutions, Inc.","filed_at":"2026-06-01T20:17:28+00:00","headline":"Penguin Solutions CFO Nate Olmstead to step down; Aaron Johnson named interim CFO; reaffirms FY2026 guidance at high end","event_type":"leadership","sec_items":["5.02","7.01","9.01"],"materiality_score":0.7,"calibrated_materiality_score":0.7,"match_reasons":["same fact type: executive_change","same SEC item: 5.02, 9.01","same event type: leadership","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-251467","json":"https://secwatch.observer/filing/0001193125-26-251467.json","markdown":"https://secwatch.observer/filing/0001193125-26-251467.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/1616533/000119312526251467/0001193125-26-251467-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1616533/000119312526251467/d104493d8k.htm"},"side_by_side_evidence":{"fact_type":"executive_change","source_excerpt":"On May 3, 2025, Mr. Warren Buffett, Berkshire’s Chairman and CEO, announced that he was going to recommend to Berkshire’s Board of Directors at its meeting to be held on May 4, 2025 that Mr. Greg Abel, Berkshire’s Vice Chairman – Non-Insurance Operations, be appointed Berkshire’s Chief Executive Officer to become effective on January 1, 2026.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1067983/000119312525115695/0001193125-25-115695-index.htm","comparable_excerpt":"On May 31, 2026, the board of directors of the Company appointed Aaron Johnson, the Company’s Vice President, Finance and Accounting, as interim CFO and as the Company’s principal financial and accounting officer, succeeding Mr. Olmstead in these positions effective as of July 9, 2026, on an interim basis until the Company appoints a successor.","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/1616533/000119312526251467/0001193125-26-251467-index.htm"}},{"accession":"0001628280-26-039461","ticker":"GRAL","company_name":"GRAIL, Inc.","filed_at":"2026-06-01T20:07:27+00:00","headline":"GRAIL appoints Joshua Ofman as CEO with amended compensation and severance","event_type":"leadership","sec_items":["5.02","8.01","9.01"],"materiality_score":0.7,"calibrated_materiality_score":0.7,"match_reasons":["same fact type: executive_change","same SEC item: 5.02, 9.01","same event type: leadership","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0001628280-26-039461","json":"https://secwatch.observer/filing/0001628280-26-039461.json","markdown":"https://secwatch.observer/filing/0001628280-26-039461.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/1699031/000162828026039461/0001628280-26-039461-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1699031/000162828026039461/gral-20260601.htm"},"side_by_side_evidence":{"fact_type":"executive_change","source_excerpt":"On May 3, 2025, Mr. Warren Buffett, Berkshire’s Chairman and CEO, announced that he was going to recommend to Berkshire’s Board of Directors at its meeting to be held on May 4, 2025 that Mr. Greg Abel, Berkshire’s Vice Chairman – Non-Insurance Operations, be appointed Berkshire’s Chief Executive Officer to become effective on January 1, 2026.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1067983/000119312525115695/0001193125-25-115695-index.htm","comparable_excerpt":"Item 5.02 Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers In connection with Dr. Joshua Ofman’s appointment as the Chief Executive Officer of GRAIL, Inc. (the “Company”), on June 1, 2026, the Company’s board of directors (the “Board”) approved an amended and restated offer letter (the “Amended Offer Letter”) and authorized and directed the Company to enter into such Amended Offer Letter with Dr. Ofman, with the Amended Offer Letter effective as of June 1, 2026 (the “Effective Date”).","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/1699031/000162828026039461/0001628280-26-039461-index.htm"}},{"accession":"0001193125-26-250020","ticker":"NSC","company_name":"NORFOLK SOUTHERN CORP","filed_at":"2026-06-01T13:15:16+00:00","headline":"Norfolk Southern COO John Orr resigns; Brian Barr appointed successor effective June 1","event_type":"leadership","sec_items":["5.02","7.01","9.01"],"materiality_score":0.7,"calibrated_materiality_score":0.7,"match_reasons":["same fact type: executive_change","same SEC item: 5.02, 9.01","same event type: leadership","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0001193125-26-250020","json":"https://secwatch.observer/filing/0001193125-26-250020.json","markdown":"https://secwatch.observer/filing/0001193125-26-250020.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/702165/000119312526250020/0001193125-26-250020-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/702165/000119312526250020/d91653d8k.htm"},"side_by_side_evidence":{"fact_type":"executive_change","source_excerpt":"On May 3, 2025, Mr. Warren Buffett, Berkshire’s Chairman and CEO, announced that he was going to recommend to Berkshire’s Board of Directors at its meeting to be held on May 4, 2025 that Mr. Greg Abel, Berkshire’s Vice Chairman – Non-Insurance Operations, be appointed Berkshire’s Chief Executive Officer to become effective on January 1, 2026.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1067983/000119312525115695/0001193125-25-115695-index.htm","comparable_excerpt":"On May 31, 2026, John Orr, Executive Vice President & Chief Operating Officer of Norfolk Southern Corporation (the “Company”), notified the Company of his intention to resign from the Company for “good reason” on account of proposed changes in the Company’s operations that would result in a diminution of his duties and responsibilities.","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/702165/000119312526250020/0001193125-26-250020-index.htm"}},{"accession":"0001477932-26-003519","ticker":"BTBD","company_name":"BT Brands, Inc.","filed_at":"2026-06-01T12:56:58+00:00","headline":"BT Brands CFO Kenneth Brimmer resigns; no successor named","event_type":"leadership","sec_items":["5.02","9.01"],"materiality_score":0.65,"calibrated_materiality_score":0.65,"match_reasons":["same fact type: executive_change","same SEC item: 5.02, 9.01","same event type: leadership","similar materiality"],"urls":{"canonical":"https://secwatch.observer/filing/0001477932-26-003519","json":"https://secwatch.observer/filing/0001477932-26-003519.json","markdown":"https://secwatch.observer/filing/0001477932-26-003519.md","edgar_index":"https://www.sec.gov/Archives/edgar/data/1718224/000147793226003519/0001477932-26-003519-index.htm","edgar_primary_document":"https://www.sec.gov/Archives/edgar/data/1718224/000147793226003519/btbd_8k.htm"},"side_by_side_evidence":{"fact_type":"executive_change","source_excerpt":"On May 3, 2025, Mr. Warren Buffett, Berkshire’s Chairman and CEO, announced that he was going to recommend to Berkshire’s Board of Directors at its meeting to be held on May 4, 2025 that Mr. Greg Abel, Berkshire’s Vice Chairman – Non-Insurance Operations, be appointed Berkshire’s Chief Executive Officer to become effective on January 1, 2026.","source_evidence_url":"https://www.sec.gov/Archives/edgar/data/1067983/000119312525115695/0001193125-25-115695-index.htm","comparable_excerpt":"Effective May 26, 2026, Kenneth Brimmer resigned from his positions as a member of the Board of Directors and Chief Financial Officer of BT Brands, Inc.","comparable_evidence_url":"https://www.sec.gov/Archives/edgar/data/1718224/000147793226003519/0001477932-26-003519-index.htm"}}],"license":"Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer"}