---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-25-229405"
form_type: "8-K"
ticker: "BRK-B"
cik: "0001067983"
company_name: "BERKSHIRE HATHAWAY INC"
filed_at: "2025-10-03T23:59:59+00:00"
generated_at: "2026-05-17T04:41:47.533950+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.5
calibrated_materiality_score: 0.5
confidence: "high"
source: SEC EDGAR
---

# Berkshire Hathaway amends bylaws to separate Chairman and CEO roles, effective immediately

## Summary
- Board amended and restated By-Laws on Sept 30, 2025; primary purpose is separating Chairman and CEO roles.
- Warren Buffett remains Chairman; Greg Abel to become President and CEO on Jan 1, 2026 (previously announced).
- New By-Law paragraph 3.5 added to Section 3; changes made to Section 4 regarding Officers.
- Amendment effective immediately; formalizes governance structure ahead of CEO transition.

## SEC filing metadata
- accession: 0001193125-25-229405
- form_type: 8-K
- ticker: BRK-B
- cik: 0001067983
- company_name: BERKSHIRE HATHAWAY INC
- filed_at: 2025-10-03T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.5
- calibrated_materiality_score: 0.5
- confidence: high
- sec_items: 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1067983/000119312525229405/0001193125-25-229405-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1067983/000119312525229405/d84825d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-25-229405
- JSON: https://secwatch.observer/filing/0001193125-25-229405.json
- Plain text: https://secwatch.observer/filing/0001193125-25-229405.txt

## Source-grounded claims
- claim_id: 76b1dd3c03d659cab099901836fc7cf651e44fdd
  claim: BERKSHIRE HATHAWAY INC: Amended and restated By-Laws to separate the roles of Chairman and CEO, effective upon appointment of Greg Abel as CEO on Jan 1, 2026 (effective 2025-09-30).
  evidence_excerpt: On September 30, 2025, the Board of Directors (the “Board”) of Berkshire Hathaway Inc., a Delaware corporation (the “Company”) voted to amend and restate the Company’s By-Laws effective immediately.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1067983/000119312525229405/0001193125-25-229405-index.htm

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