Insider · CIK 0001713777
Michael J. O'Sullivan
Files at: BRK.A, SNAP. On EDGAR ↗
Reported trades — common stock
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Aug 12, 2026 PForm 4 → | Aug 13, 5:06 pm EDT | BERKSHIRE HATHAWAY INCBRK.B | 488 | $512.44 | $250,072 | 1,151 | +73.6% |
Reported trades — derivatives (options, RSUs, warrants)
No reported derivative activity in this period.