Insider trades › Berkshire Hathaway › Michael J. O'Sullivan
Michael J. O'Sullivan: Berkshire Hathaway stock transactions
Michael J. O'Sullivan (See Remarks at Berkshire Hathaway) reported 3 transactions in BRK-B stock on SEC Form 4 over the last 120 days. Name as filed with the SEC: O'Sullivan Michael J..
$0open-market sales (0 shares)
$250Kopen-market purchases (488 shares)
2026-08-12most recent transaction
Transactions
| Date | Transaction | Shares | Price | Value | Filing |
|---|---|---|---|---|---|
| Aug 12, 2026 | Open-market purchase indirect | 45 | $510.64 | $23K | Form 4 ↗ |
| Aug 12, 2026 | Open-market purchase indirect | 400 | $512.52 | $205K | Form 4 ↗ |
| Aug 12, 2026 | Open-market purchase indirect | 43 | $513.61 | $22K | Form 4 ↗ |
Source: SEC EDGAR Form 4 filings; each row links to the filing. Sales marked "10b5-1 plan" were reported as made under a pre-arranged trading plan. Insider trades are reported facts, not recommendations. Not investment advice.