O'Sullivan Michael J. bought BRK.B
August 12, 2026 · Form 4 insider transaction
O'Sullivan Michael J. bought 43 shares of Berkshire hathaway Inc. New at $513.61 per share, a transaction worth $22.1K. The trade was recorded as open-market purchase and disclosed on an SEC Form 4, filed 1 day after the transaction.
Footnotes
The reported price in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $513.60 to $513.64 per share, inclusive. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.; Shares held by a living trust of which the reporting person is trustee.