Michael J. O'Sullivan

See Remarks

See Remarks at BERKSHIRE HATHAWAY INC, filing insider transactions on 2026-08-12.

Total Purchases

$250K

3 transactions

Total Sales

—

0 transactions

Companies Traded

1

3 total filings

Active Since

2026-08-12

Last: 2026-08-12

Companies

BRK.B2026-08-12

BERKSHIRE HATHAWAY INC

Other Reporting Insiders at Berkshire Hathaway Inc

Michael J. O'Sullivan
See Remarks
Last filing 2026-05-06

Transaction History

Date	Ticker	Type	Shares	Price	Value	Owned After
2026-08-12	BRK.B	Purchase	400	$512.52	$205K	1,108	SEC ↗
2026-08-12	BRK.B	Purchase	43	$513.61	$22K	1,151	SEC ↗
2026-08-12	BRK.B	Purchase	45	$510.64	$23K

Michael J. O'Sullivan (Berkshire Hathaway Inc) Insider Trades | Tormere