---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-314935"
form_type: "8-K"
ticker: "BRK-B"
cik: "0001067983"
company_name: "BERKSHIRE HATHAWAY INC"
filed_at: "2025-12-11T23:59:59+00:00"
generated_at: "2026-05-16T13:27:49.064479+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Berkshire Hathaway names new CFO, GEICO CEO, and other leadership changes

## Summary
- 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.

## SEC filing metadata
- accession: 0001193125-25-314935
- form_type: 8-K
- ticker: BRK-B
- cik: 0001067983
- company_name: BERKSHIRE HATHAWAY INC
- filed_at: 2025-12-11T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 5.02, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1067983/000119312525314935/0001193125-25-314935-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1067983/000119312525314935/d10933d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-314935
- JSON: https://secwatch.observer/filing/0001193125-25-314935.json
- Plain text: https://secwatch.observer/filing/0001193125-25-314935.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.