AlphaYouMJ
Insider buying
Michael J. O'Sullivan bought $250K of Berkshire Hathaway Inc (BRK.B) stock
Michael J. O'Sullivan bought 488 shares of BRK.B stock worth $250K, per an SEC Form 4 filed Aug 13, 2026.
It was an open-market purchase.
The trade happened on Aug 12, 2026, 1 day before it was made public.
- Traded
- Aug 12, 2026
- Disclosed
- Aug 13, 2026
- Filing delay
- 1 day
- Source
- SEC Form 4
More BRK.B insider and Congress trades
From a public SEC Form 4, linked above. Not investment advice, and not a recommendation to buy or sell.