BRK.B · Insider Trading
BERKSHIRE HATHAWAY Class B
Every open-market purchase and sale reported by BRK.B officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-29 | Ajit Jain | Vice Chairman | Sell | −39,700 | −$19.97M |
| 2026-09-04 | Ajit Jain | Vice Chairman | G | −10 | — |
| 2026-08-13 | Charles C Chang | See Remarks | Buy | +2 deriv. | — |
| 2026-08-13 | Michael J. O'Sullivan | See Remarks | Buy | +488 | +$250.07K |
| 2026-07-15 | Warren E Buffett | Director | MIXED | — | — |
| 2026-07-02 | Ajit Jain | Vice Chairman | G | −3 | — |
| 2026-05-26 | Warren E Buffett | Director | G | −160 | — |
| 2026-05-20 | Warren E Buffett | Director | MIXED | +208 | — |
| 2026-05-18 | Charlotte Guyman | Director | G | −574 | — |
| 2026-05-06 | Michael J. O'Sullivan | See Remarks | Buy | +536 | +$250.55K |
| 2026-03-27 | Ajit Jain | Vice Chairman | G | −22 | — |
| 2026-03-19 | Warren E Buffett | Chairman and CEO | G | — | — |
| 2026-03-05 | Gregory E. Abel | See Remarks | Buy | — | — |
| 2025-11-12 | Warren E Buffett | Chairman and CEO | MIXED | — | — |
| 2025-11-05 | Charlotte Guyman | Director | MIXED | +1,090 | — |
| 2025-10-24 | Ajit Jain | Vice Chairman | G | −32 | — |
| 2025-09-26 | Ajit Jain | Vice Chairman | G | −32 | — |
| 2025-09-26 | Ajit Jain | Vice Chairman | Sell | −15,000 | — |
| 2025-08-08 | Ajit Jain | Vice Chairman | Sell | −2,000 | −$929.45K |
| 2025-07-16 | Warren E Buffett | Chairman and CEO | G | −30 | — |
| 2025-06-30 | Warren E Buffett | Chairman and CEO | MIXED | +179 | — |
| 2025-05-15 | Warren E Buffett | Chairman and CEO | MIXED | +174 | — |
| 2025-04-09 | Warren E Buffett | Chairman and CEO | G | −160 | — |
| 2025-04-04 | Ajit Jain | Vice Chairman | G | −10 | — |
| 2025-03-21 | Charlotte Guyman | Director | G | −1,000 | — |
| 2025-03-14 | Ajit Jain | Vice Chairman | G | −10 | — |
| 2025-03-04 | Meryl B Witmer | Director | Sell | −2 | −$1.55M |
| 2025-02-25 | Meryl B Witmer | Director | G | −1,000 | — |
| 2025-01-17 | Ajit Jain | Vice Chairman | G | −3 | — |
| 2025-01-03 | Charlotte Guyman | Director | Sell | −1 deriv. | — |
| 2024-12-27 | Charlotte Guyman | Director | G | −247 | — |
| 2024-12-11 | Charlotte Guyman | Director | G | −336 | — |
| 2024-12-04 | Warren E Buffett | Chairman and CEO | MIXED | −382 | — |
| 2024-11-25 | Warren E Buffett | Chairman and CEO | MIXED | — | — |
| 2024-11-22 | Ajit Jain | Vice Chairman | G | −4 | — |
| 2024-11-07 | Charlotte Guyman | Director | C | +3,000 | — |
| 2024-09-13 | Warren E Buffett | Chairman and CEO | G | −20 | — |
| 2024-09-13 | Ajit Jain | Vice Chairman | G | −23 | — |
| 2024-09-11 | Ajit Jain | Vice Chairman | Sell | — | — |
| 2024-07-02 | Warren E Buffett | Chairman and CEO | G | −1,233 | — |
| 2024-06-28 | Warren E Buffett | Chairman and CEO | MIXED | +2,242 | — |
| 2024-05-17 | Ajit Jain | Vice Chairman | G | −25 | — |
| 2024-01-12 | Ajit Jain | Vice Chairman | G | −28 | — |
| 2023-12-18 | Charlotte Guyman | Director | G | −268 | — |
| 2023-12-14 | Charlotte Guyman | Director | MIXED | +1,223 | — |
| 2023-11-27 | Warren E Buffett | Chairman and CEO | MIXED | — | — |
| 2023-11-21 | Warren E Buffett | Chairman and CEO | MIXED | — | — |
| 2023-11-13 | Ajit Jain | Vice Chairman | G | −3 | — |
| 2023-10-30 | Ronald L Olson | Director | MIXED | −843 | — |
| 2023-10-25 | Ajit Jain | Vice Chairman | G | −75 | — |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Warren E Buffett | Chairman and CEO | 12,001,162 | $6.13B |
| Ajit Jain | Vice Chairman | 67,925 | $34.71M |
| Charlotte Guyman | Director | 2,888 | $1.48M |
| Gregory E. Abel | See Remarks | 2,289 | $1.17M |
| Michael J. O'Sullivan | See Remarks | 1,108 | $566.24K |
| Meryl B Witmer | Director | 5 | $2.56K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the BRK.B quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.