BUFFETT WARREN E
CIK 315090 · Chairman and CEO · last filed 2026-05-26
BUFFETT WARREN E is a Chairman and CEO who has filed 140 SEC Form 4 insider transactions across 15 companies since 2007. The most recent filing, for BRK.B, was dated May 26, 2026. Across all open-market trades the lifetime net is +$12.77B, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $59.99B across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$59.99B
15
140
$12.77B
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| BRK.B | Chairman and CEO | 1,162 | $487.77 | $566.8K | $0 | 37 | 2026-05-26 |
| DVA | 10%+ Owner | 28,880,209 | $198.19 | $5.72B | -$511.73M | 20 | 2026-05-05 |
| SIRI | 10%+ Owner | 121,754,529 | $27.61 | $3.36B | $708.75M | 4 | 2025-08-04 |
| VRSN | 10%+ Owner | 13,289,080 | $283.89 | $3.77B | $130.16M | 3 | 2025-01-03 |
| MERpK | 10%+ Owner | 766,305,462 | $25.61 | $19.63B | -$6.79B | 7 | 2024-10-17 |
| FWONK | 10%+ Owner | 0 | $87.97 | $0 | $0 | 1 | 2024-09-12 |
| LSXMK | 10%+ Owner | 4,986,588 | $22.29 | — | $2.28B | 25 | 2024-06-20 |
| OXY.WS | 10%+ Owner | 238,533,189 | $34.50 | $8.23B | $14.65B | 10 | 2023-12-13 |
| HPQ | 10%+ Owner | 102,519,035 | $24.94 | $2.56B | -$503.53M | 2 | 2023-10-02 |
| LSXMR | 10%+ Owner | 35,692,115 | — | — | $336.62M | 3 | 2020-06-03 |
| LUV | 10%+ Owner | 52,644,964 | $43.17 | $2.27B | -$148.69M | 1 | 2020-04-03 |
| DALw | 10%+ Owner | 70,910,456 | — | — | $531.12M | 2 | 2019-03-13 |
| PSX | 10%+ Owner | 80,689,892 | $179.00 | $14.44B | $2.49B | 13 | 2016-09-19 |
| MCOw | 10%+ Owner | 29,923,326 | — | — | -$1.01B | 2 | 2010-09-14 |
| BNI | 10%+ Owner | 70,089,029 | — | — | $607.43M | 7 | 2008-12-12 |
Recent Filings
140 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-05-26 | BRK.B | Gift (G) | −160 | $0 | EDGAR |
| 2026-05-20 | BRK.B | Mixed | +208 | $0 | EDGAR |
| 2026-05-05 | DVA | Sell (S) | −2,440,752 | -$365.73M | EDGAR |
| 2026-03-19 | BRK.B | Gift (G) | — | $0 | EDGAR |
| 2025-11-12 | BRK.B | Mixed | — | $0 | EDGAR |
| 2025-08-04 | DVA | Sell (S) | −3,271,924 | -$460.05M | EDGAR |
| 2025-08-04 | SIRI | Buy (P) | +10,060,850 | $212.91M | EDGAR |
| 2025-07-16 | BRK.B | Gift (G) | −30 | $0 | EDGAR |
| 2025-06-30 | BRK.B | Mixed | +179 | $0 | EDGAR |
| 2025-05-27 | DVA | Sell (S) | −400,000 | -$55.54M | EDGAR |