General Counsel
Berkshire Hathaway Inc (BRK-B)Equibles does not estimate personal net worth.
Get an email with a short summary when Berkshire Hathaway Inc publishes a filing, an earnings call transcript or a press release.
Get BRK-B alertsMichael J. O'Sullivan is recorded as General Counsel at Berkshire Hathaway Inc (BRK-B) since January 1, 2026. Berkshire Hathaway Inc reported in an 8-K filed December 11, 2025 that Michael J. O'Sullivan was appointed Senior Vice President and General Counsel, effective January 1, 2026. Berkshire Hathaway Inc is classified in the Insurance - Diversified industry within the Financial Services sector. Other leadership on record at Berkshire Hathaway Inc includes Greg Abel (CEO), Gregory E. Abel (CEO), Nancy L. Pierce (CEO) and 7 others.
“Michael J. O'Sullivan has been appointed Senior Vice President and General Counsel, effective January 1, 2026.”
2026-01-01–present
BRK-B
Insurance - Diversified · Financial Services
General Counsel
2026-01-01–present
