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Michael J. O'Sullivan - Insider Trading Activity | SEC Form 4 | SmartMoneyDB

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Michael J. O'Sullivan

See Remarks

Total Bought

$475.69K

Total Sold

$0

Net Position

+$475.69K

Companies

1

Open-Market Trades

4

4 buys · 0 sells

Buy Hit Rate (90d)

+100.00%

Sell Timing (90d)

—

Weighted Return (90d)

+10.09%

Median: +10.09%

30d Win Rate

100%

4 trades evaluated

90d Win Rate

100%

1 trades evaluated

Avg 30d Return

+1.03%

Avg 90d Return

+10.09%

Active in:BRK-B

Transaction History

Date	Company	Code	Type	Shares	Price	Value	30d	90d	180d
Aug 12, 2026	BRK-B BERKSHIRE HATHAWAY INC	P	Purchase	45	$510.64	$22.98K	+0.07%	—	—
Aug 12, 2026	BRK-B BERKSHIRE HATHAWAY INC	P	Purchase	400	$512.52	$205.01K	+0.07%	—	—
Aug 12, 2026	BRK-B BERKSHIRE HATHAWAY INC	P	Purchase	43	$513.61	$22.09K	+0.07%	—	—
May 6, 2026	BRK-B BERKSHIRE HATHAWAY INC	P	Purchase	483	$467.13	$225.62K	+3.90%	+10.09%	—