secwatch.observer — SEC 8-K summary
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Issuer:     BERKSHIRE HATHAWAY INC (BRK-B)
CIK:        0001067983
Form:       8-K
Filed at:   2025-12-11T23:59:59+00:00
Accession:  0001193125-25-314935
Event type: leadership
Sentiment:  neutral
Materiality: 0.70
Item codes: 5.02, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Berkshire Hathaway names new CFO, GEICO CEO, and other leadership changes
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- Marc D. Hamburg to retire as CFO on June 1, 2027; Charles C. Chang succeeds as SVP & CFO effective June 1, 2026.
- Nancy L. Pierce appointed CEO of GEICO effective immediately; Todd A. Combs resigns to join JPMorgan Chase.
- Adam M. Johnson named President of Consumer Products, Service and Retailing, effective immediately, while remaining NetJets CEO.
- Michael J. O'Sullivan appointed SVP and General Counsel effective January 1, 2026, a newly created position.
- Gregory E. Abel to become President and CEO on January 1, 2026, as previously announced.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1067983/000119312525314935/0001193125-25-314935-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1067983/000119312525314935/d10933d8k.htm
  HTML page:      https://secwatch.observer/filing/0001193125-25-314935

License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer