SEC CIK 1713777
O'Sullivan Michael J.
Reported ownership across 3 companies, sourced from SEC Form 4 filings and updated daily.
Current Positions
| Company | Shares Owned | As Of |
|---|---|---|
| SNAPview stock → | 1,854,982 | 2025-11-17 |
| BRK.Bview stock → | 1,151 | 2026-08-12 |
| BRK.Aview stock → | 127 | 2026-05-03 |
Position History — BRK.B
Reported shares owned immediately after each Form 4 transaction, over time.
Recent Filings — BRK.B
| Date | Activity | Shares | Price | Owned After |
|---|---|---|---|---|
| 2026-08-12 | Open-market buy | 43 | $513.61 | 1,151 |
| 2026-08-12 | Open-market buy | 400 | $512.52 | 1,108 |
| 2026-08-12 | Open-market buy | 45 | $510.64 | 708 |
| 2026-05-06 | Open-market buy | 53 | $470.22 | 663 |
| 2026-05-06 | Open-market buy | 483 | $467.13 | 610 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.