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Home/Insider Dashboard/O'Sullivan Michael J.
INSIDER · CIK 1713777

O'Sullivan Michael J.

See Remarks at BERKSHIRE HATHAWAY INC (BRK.A)

↗1 Form 4 rows in the window

Covers original filings from Aug 1, 2026 to Oct 29, 2026. Older trades and amendments are in the SEC history.

$0.00Bought on the market
$0.00Sold on the market
1Companies
Aug 13, 2026Latest filing
Form 4 trades by O'Sullivan Michael J.
CompanyTitleTypeOwned
Aug 13, 202617:06Aug 12, 2026BRK.ABERKSHIRE HATHAWAY INCSee RemarksP · BuyPrice unverified$512.44+4881,151+74%———
O'Sullivan Michael J. Insider Trades (BRK.A) | Shameless Cloning