1 insiders reported 5 Form 4 transactions for BERKSHIRE HATHAWAY INC (BRK.B) over the past 18 months (most recent 2026-08-13). Recent activity: O'Sullivan Michael J. (See Remarks) Buy 45 shares, O'Sullivan Michael J. (See Remarks) Buy 400 shares, O'Sullivan Michael J. (See Remarks) Buy 43 shares, O'Sullivan Michael J. (See Remarks) Buy 483 shares, O'Sullivan Michael J. (See Remarks) Buy 53 shares. Source: SEC Form 4.
| Date | Insider | Title | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-13 | O'Sullivan Michael J. | See Remarks | Buy | 45 | $22,979 |
| 2026-08-13 | O'Sullivan Michael J. | See Remarks | Buy | 400 | $205,008 |
| 2026-08-13 | O'Sullivan Michael J. | See Remarks | Buy | 43 | $22,085 |
| 2026-05-06 | O'Sullivan Michael J. | See Remarks | Buy | 483 | $225,624 |
| 2026-05-06 | O'Sullivan Michael J. | See Remarks | Buy | 53 | $24,922 |
Source: SEC Form 4 filings · as of 2026-08-13