Transactions
3
Insider / BERKSHIRE HATHAWAY INC
O'Sullivan Michael J.
See Remarks at BERKSHIRE HATHAWAY INC · BRK.B
O'Sullivan Michael J., See Remarks at BERKSHIRE HATHAWAY INC, has disclosed 3 transactions in BRK.B since August 13, 2026: 3 purchases (3 open-market buys) and 0 sales, worth about $250K at the reported prices. The latest was filed August 13, 2026, 1 day after the trade.
Open-market buys
3
Sales
0
Avg. disclosure lag
1.0d
Transactions
| Security | Side | Trade date | Disclosed | Lag | Shares | Price | Value | Flags | Source |
|---|---|---|---|---|---|---|---|---|---|
| BRK.B | Buy P | August 12, 2026 | August 13, 2026 | 1d | 43 | $514 | $22K | indirect | Form 4 ↗ |
| BRK.B | Buy P | August 12, 2026 | August 13, 2026 | 1d | 400 | $513 | $205K | indirect | Form 4 ↗ |
| BRK.B | Buy P | August 12, 2026 | August 13, 2026 | 1d | 45 | $511 | $23K | indirect | Form 4 ↗ |
Filings
| Filed | Form | Accession | Rows | Status | Source |
|---|---|---|---|---|---|
| August 13, 2026 | Form 4 | 0001193125-26-349574 | 3 | published | EDGAR ↗ |
Sources and method
Every row comes from the reporting owner's Form 4 as filed with the SEC (EDGAR ownership XML), read daily. "Value" is shares × the reported price; code P is an open-market purchase, S a sale, M an option exercise, A a grant. The lag is the filing date minus the trade date; Form 4 is due within two business days. Amendments (4/A) are not merged. Details on the methodology page; report an error on corrections.
Not investment advice. Figures are public disclosures shown as filed; they may lag the trade and may be amended later. No recommendation is made or implied.