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People
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Michael O'Sullivan
MO
Person
US
Michael O'Sullivan
1
company
·
1
mandates
Mandates
1
Holdings
Filings
Insider
API
Company
Relation
Title
Age
Since
As of
BERKSHIRE HATHAWAY INC.
BRK-B
Officer
●
General Counsel
60
2025-12-31
2026-07-09
Michael O'Sullivan — Person
