BRK.B Insider Trading Activity and SEC Form 4 Filings
BRK.B insider trading summary
Over the past 12 months, insiders at Berkshire Hathaway Inc (BRK.B) reported 5 open-market purchases worth $501K by 1 insider and no sales on SEC Form 4. Net insider buying was $501K.
Latest BRK.B insider buys and sells
| Date | Insider | Role | Type | Value |
|---|---|---|---|---|
| Aug 12, 2026 | Michael J. O'Sullivan | See Remarks | Buy | $23K (45 @ $510.64) |
| Aug 12, 2026 | Michael J. O'Sullivan | See Remarks | Buy | $205K (400 @ $512.52) |
| Aug 12, 2026 | Michael J. O'Sullivan | See Remarks | Buy | $22K (43 @ $513.61) |
| May 6, 2026 | Michael J. O'Sullivan | See Remarks | Buy | $25K (53 @ $470.22) |
| May 6, 2026 | Michael J. O'Sullivan | See Remarks | Buy | $226K (483 @ $467.13) |
| Dec 19, 2014 | Ronald L Olson | Director | Sell | $10K (65 @ $152.07) |
| Feb 26, 2010 | Bill & Melinda Gates Foundation Trust | 10% Owner | Sell | $3.3M (41,400 @ $79.62) |
| Feb 25, 2010 | Bill & Melinda Gates Foundation Trust | 10% Owner | Sell | $2.9M (36,384 @ $79.17) |
| Feb 24, 2010 | Bill & Melinda Gates Foundation Trust | 10% Owner | Sell | $3.2M (40,000 @ $79.64) |
| Feb 23, 2010 | Bill & Melinda Gates Foundation Trust | 10% Owner | Sell | $2.8M (35,000 @ $79.75) |
Source: SEC Form 4 filings. Open-market purchases (code P) and sales (code S) only; option exercises, grants and gifts are excluded.