NYSE · CIK 0001067983
BRK-B BERKSHIRE HATHAWAY INC
Insider trading from SEC Form 4. Last filing 15 d ago. Close $517.60 on Oct 12, 2026, +11% from the 52-week low and -2% from the high.
In brief
BERKSHIRE HATHAWAY INC (BRK-B) has 43 SEC Form 4 filings on file from 7 insiders, the latest filed on Sep 29, 2026. In the last 90 days insiders made 1 open-market buy worth $250k and 1 open-market sell worth $20M, net -$20M.
5 open-market trades have been scored at BRK-B. The newest: Ajit Jain (Vice Chairman) sold $20M of stock on Sep 28, 2026, filed Sep 29, 2026, scored 55 (moderate).
1 Form 144 notice of planned sales is on file, the latest filed Dec 26, 2024.
Last 90 days
Price and insider trades, last year
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
Open-market buys and sells at BERKSHIRE HATHAWAY INC, scored.
| Score | Insider | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 55Moderate | Ajit Jain Vice Chairman sell | $20M 39,700 shares | -37% | - | |
| 48Moderate | Michael J. O'Sullivan See Remarks buy | $250k 488 shares | +74% | +10% from low-4% from high | |
| 48Moderate | Michael J. O'Sullivan See Remarks buy | $251k 536 shares | +422% | +2% from low-9% from high | |
| 44Moderate | Ajit Jain Vice Chairman sell | $929k 2,000 shares | -2% | +5% from low-14% from high | |
| 70Notable | Meryl B Witmer director sell | $1.6M 2 shares | -50% | - |
Planned sales
Form 144 notices filed before a sale of restricted or control stock, newest first. The sale itself usually reaches a Form 4 within days. All planned sales
| Filed | Seller | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Dec 26, 2024 | GUYMAN CHARLOTTE Member of immediate family of any of the foregoing | 1 0.00% of outstanding | $675 | Dec 26, 2024 | none |
Transactions
The newest 50 of 120 rows filed, every code.
| Date | Insider | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 28, 2026 | Ajit Jain Vice Chairman | SOpen-market sale Class B Common Stockindirect: By Jain Foundation Inc. (Non-Profit Corporation) | -39,700 | $503.09 | $20M | 67,608 | 15 d ago |
| Sep 3, 2026 | Ajit Jain Vice Chairman | GGift Class B Common Stock | -10 | - | - | 317 | 40 d ago |
| Aug 12, 2026 | Charles C Chang See Remarks | POpen-market purchase Class A Common Stockderivativeindirect: By LLC | +1 | $765,189.94 | $765k | 7 | Aug 13, 2026 |
| Aug 12, 2026 | Michael J. O'Sullivan See Remarks | POpen-market purchase Class B Common Stockindirect: By Trust | +45 | $510.64 | $23k | 708 | Aug 13, 2026 |
| Aug 12, 2026 | Charles C Chang See Remarks | POpen-market purchase Class A Common Stockderivativeindirect: By LLC | +1 | $765,184.18 | $765k | 8 | Aug 13, 2026 |
| Aug 12, 2026 | Michael J. O'Sullivan See Remarks | POpen-market purchase Class B Common Stockindirect: By Trust | +400 | $512.52 | $205k | 1,108 | Aug 13, 2026 |
| Aug 12, 2026 | Michael J. O'Sullivan See Remarks | POpen-market purchase Class B Common Stockindirect: By Trust | +43 | $513.61 | $22k | 1,151 | Aug 13, 2026 |
| Jul 14, 2026 | Warren E Buffett Chairman and CEO | CConversion Class B Common Stock | +12,000,000 | $0.00 | $0 | 12,001,162 | Jul 15, 2026 |
| Jul 14, 2026 | Warren E Buffett Chairman and CEO | GGift Class B Common Stock | -9,000,000 | $0.00 | $0 | 3,001,162 | Jul 15, 2026 |
| Jul 14, 2026 | Warren E Buffett Chairman and CEO | GGift Class B Common Stock | -1,000,000 | $0.00 | $0 | 2,001,162 | Jul 15, 2026 |
| Jul 14, 2026 | Warren E Buffett Chairman and CEO | GGift Class B Common Stock | -1,000,000 | $0.00 | $0 | 1,001,162 | Jul 15, 2026 |
| Jul 14, 2026 | Warren E Buffett Chairman and CEO | GGift Class B Common Stock | -1,000,000 | $0.00 | $0 | 1,162 | Jul 15, 2026 |
| Jul 14, 2026 | Warren E Buffett Chairman and CEO | CConversion Class A Common Stockderivative | -8,000 | - | - | 188,290 | Jul 15, 2026 |
| Jul 1, 2026 | Ajit Jain Vice Chairman | GGift Class B Common Stock | -3 | - | - | 327 | Jul 2, 2026 |
| May 22, 2026 | Warren E Buffett Chairman and CEO | GGift Class B Common Stock | -160 | $0.00 | $0 | 1,162 | May 26, 2026 |
| May 18, 2026 | Warren E Buffett Chairman and CEO | CConversion Class B Common Stock | +37,500 | $0.00 | $0 | 38,614 | May 20, 2026 |
| May 18, 2026 | Warren E Buffett Chairman and CEO | GGift Class B Common Stock | -18,646 | $0.00 | $0 | 19,968 | May 20, 2026 |
| May 18, 2026 | Warren E Buffett Chairman and CEO | GGift Class B Common Stock | -18,646 | $0.00 | $0 | 1,322 | May 20, 2026 |
| May 18, 2026 | Warren E Buffett Chairman and CEO | CConversion Class A Common Stockderivative | -25 | - | - | 196,290 | May 20, 2026 |
| May 14, 2026 | Charlotte Guyman director | GGift Class B Common Stock | -574 | $0.00 | $0 | 2,888 | May 18, 2026 |
| May 6, 2026 | Michael J. O'Sullivan See Remarks | POpen-market purchase Class B Common Stockindirect: By Trust | +483 | $467.13 | $226k | 610 | May 6, 2026 |
| May 6, 2026 | Michael J. O'Sullivan See Remarks | POpen-market purchase Class B Common Stockindirect: By Trust | +53 | $470.22 | $25k | 663 | May 6, 2026 |
| Mar 27, 2026 | Ajit Jain Vice Chairman | GGift Class B Common Stock | -22 | - | - | 330 | Mar 27, 2026 |
| Mar 17, 2026 | Warren E Buffett Chairman and CEO | GGift Class A Common Stockderivative | -2 | - | - | 196,315 | Mar 19, 2026 |
| Mar 4, 2026 | Gregory E. Abel See Remarks | POpen-market purchase Class A Common Stockderivativeindirect: By Gregory E. Abel Revocable Trust | +1 | $725,210.19 | $725k | 229 | Mar 5, 2026 |
| Mar 4, 2026 | Gregory E. Abel See Remarks | POpen-market purchase Class A Common Stockderivativeindirect: By Gregory E. Abel Revocable Trust | +1 | $725,995.00 | $726k | 230 | Mar 5, 2026 |
| Mar 4, 2026 | Gregory E. Abel See Remarks | POpen-market purchase Class A Common Stockderivativeindirect: By Gregory E. Abel Revocable Trust | +1 | $725,999.99 | $726k | 231 | Mar 5, 2026 |
| Mar 4, 2026 | Gregory E. Abel See Remarks | POpen-market purchase Class A Common Stockderivativeindirect: By Gregory E. Abel Revocable Trust | +1 | $726,079.01 | $726k | 232 | Mar 5, 2026 |
| Mar 4, 2026 | Gregory E. Abel See Remarks | POpen-market purchase Class A Common Stockderivativeindirect: By Gregory E. Abel Revocable Trust | +1 | $726,407.57 | $726k | 233 | Mar 5, 2026 |
| Mar 4, 2026 | Gregory E. Abel See Remarks | POpen-market purchase Class A Common Stockderivativeindirect: By Gregory E. Abel Revocable Trust | +1 | $726,994.76 | $727k | 234 | Mar 5, 2026 |
| Mar 4, 2026 | Gregory E. Abel See Remarks | POpen-market purchase Class A Common Stockderivativeindirect: By Gregory E. Abel Revocable Trust | +2 | $727,185.00 | $1.5M | 236 | Mar 5, 2026 |
| Mar 4, 2026 | Gregory E. Abel See Remarks | POpen-market purchase Class A Common Stockderivativeindirect: By Gregory E. Abel Revocable Trust | +1 | $727,453.25 | $727k | 237 | Mar 5, 2026 |
| Mar 4, 2026 | Gregory E. Abel See Remarks | POpen-market purchase Class A Common Stockderivativeindirect: By Gregory E. Abel Revocable Trust | +2 | $727,530.26 | $1.5M | 239 | Mar 5, 2026 |
| Mar 4, 2026 | Gregory E. Abel See Remarks | POpen-market purchase Class A Common Stockderivativeindirect: By Gregory E. Abel Revocable Trust | +1 | $729,000.00 | $729k | 240 | Mar 5, 2026 |
| Mar 4, 2026 | Gregory E. Abel See Remarks | POpen-market purchase Class A Common Stockderivativeindirect: By Gregory E. Abel Revocable Trust | +1 | $730,145.00 | $730k | 241 | Mar 5, 2026 |
| Mar 4, 2026 | Gregory E. Abel See Remarks | POpen-market purchase Class A Common Stockderivativeindirect: By Gregory E. Abel Revocable Trust | +1 | $730,700.00 | $731k | 242 | Mar 5, 2026 |
| Mar 4, 2026 | Gregory E. Abel See Remarks | POpen-market purchase Class A Common Stockderivativeindirect: By Gregory E. Abel Revocable Trust | +1 | $730,707.01 | $731k | 243 | Mar 5, 2026 |
| Mar 4, 2026 | Gregory E. Abel See Remarks | POpen-market purchase Class A Common Stockderivativeindirect: By Gregory E. Abel Revocable Trust | +1 | $731,349.99 | $731k | 244 | Mar 5, 2026 |
| Mar 4, 2026 | Gregory E. Abel See Remarks | POpen-market purchase Class A Common Stockderivativeindirect: By Gregory E. Abel Revocable Trust | +2 | $732,000.00 | $1.5M | 246 | Mar 5, 2026 |
| Mar 4, 2026 | Gregory E. Abel See Remarks | POpen-market purchase Class A Common Stockderivativeindirect: By Gregory E. Abel Revocable Trust | +1 | $732,500.00 | $733k | 247 | Mar 5, 2026 |
| Mar 4, 2026 | Gregory E. Abel See Remarks | POpen-market purchase Class A Common Stockderivativeindirect: By Gregory E. Abel Revocable Trust | +1 | $733,100.00 | $733k | 248 | Mar 5, 2026 |
| Mar 4, 2026 | Gregory E. Abel See Remarks | POpen-market purchase Class A Common Stockderivativeindirect: By Gregory E. Abel Revocable Trust | +1 | $733,300.00 | $733k | 249 | Mar 5, 2026 |
| Nov 10, 2025 | Warren E Buffett Chairman and CEO | CConversion Class B Common Stock | +2,700,000 | $0.00 | $0 | 2,701,114 | Nov 12, 2025 |
| Nov 10, 2025 | Warren E Buffett Chairman and CEO | GGift Class B Common Stock | -1,500,000 | $0.00 | $0 | 1,201,114 | Nov 12, 2025 |
| Nov 10, 2025 | Warren E Buffett Chairman and CEO | GGift Class B Common Stock | -400,000 | $0.00 | $0 | 801,114 | Nov 12, 2025 |
| Nov 10, 2025 | Warren E Buffett Chairman and CEO | GGift Class B Common Stock | -400,000 | $0.00 | $0 | 401,114 | Nov 12, 2025 |
| Nov 10, 2025 | Warren E Buffett Chairman and CEO | GGift Class B Common Stock | -400,000 | $0.00 | $0 | 1,114 | Nov 12, 2025 |
| Nov 10, 2025 | Warren E Buffett Chairman and CEO | CConversion Class A Common Stockderivative | -1,800 | - | - | 196,317 | Nov 12, 2025 |
| Nov 3, 2025 | Charlotte Guyman director | CConversion Class B Common Stock | +1,500 | $0.00 | $0 | 3,872 | Nov 5, 2025 |
| Nov 3, 2025 | Charlotte Guyman director | GGift Class B Common Stock | -410 | $0.00 | $0 | 3,462 | Nov 5, 2025 |
Insiders
Everyone who has filed a Form 4 here.
- Gregory E. AbelSee Remarks
- Warren E BuffettChairman and CEO
- Charles C ChangSee Remarks
- Charlotte Guymandirector
- Ajit JainVice Chairman
- Michael J. O'SullivanSee Remarks
- Meryl B Witmerdirector
Questions about BRK-B
Answered from the filings on this page, as of the latest one.
Are insiders buying BRK-B?
As of Sep 29, 2026, SEC Form 4 filings show 1 open-market buy worth $250k by 1 insider and 1 open-market sell worth $20M by 1 insider at BERKSHIRE HATHAWAY INC in the last 90 days, net -$20M. Only purchases (code P) and sales (code S) count; grants, option exercises and tax withholding do not.
Who was the last insider to trade BRK-B on the open market?
Ajit Jain (Vice Chairman) sold $20M of BRK-B on Sep 28, 2026 and filed the Form 4 on Sep 29, 2026. InsiderTell scored 55 (moderate).
How many insiders file Form 4 at BERKSHIRE HATHAWAY INC?
7 people have filed a Form 4 at BERKSHIRE HATHAWAY INC, among them Gregory E. Abel (See Remarks), Warren E Buffett (Chairman and CEO), Charles C Chang (See Remarks). Officers, directors and holders of more than 10% of a share class must report their trades within two business days.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.