| Date | Insider | Title | Code | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 12, 2026 | Chang Charles C | See Remarks | P | 1 | – | – |
| Aug 12, 2026 | Chang Charles C | See Remarks | P | 1 | – | – |
| Aug 12, 2026 | O'Sullivan Michael J. | See Remarks | P | 43 | $513.6100 | $22.09K |
| Aug 12, 2026 | O'Sullivan Michael J. | See Remarks | P | 400 | $512.5200 | $205.01K |
| Aug 12, 2026 | O'Sullivan Michael J. | See Remarks | P | 45 | $510.6400 | $22.98K |
| Jul 31, 2026 | BERKSHIRE HATHAWAY INC | 10% Owner | S | 182,980 | $199.5480 | $36.51M |
| Jul 14, 2026 | BUFFETT WARREN E | Director, 10% Owner | C | 8,000 | – | – |
| Jul 14, 2026 | BUFFETT WARREN E | Director, 10% Owner | G | 1,000,000 | $0.0000 | $0.00 |
| Jul 14, 2026 | BUFFETT WARREN E | Director, 10% Owner | G | 1,000,000 | $0.0000 | $0.00 |
| Jul 14, 2026 | BUFFETT WARREN E | Director, 10% Owner | G | 1,000,000 | $0.0000 | $0.00 |
| Jul 14, 2026 | BUFFETT WARREN E | Director, 10% Owner | G | 9,000,000 | $0.0000 | $0.00 |
| Jul 14, 2026 | BUFFETT WARREN E | Director, 10% Owner | C | 12,000,000 | $0.0000 | $0.00 |
| Jul 1, 2026 | Jain Ajit | Vice Chairman | G | 3 | – | – |
| May 22, 2026 | BUFFETT WARREN E | Director, 10% Owner | G | 160 | $0.0000 | $0.00 |
| May 18, 2026 | BUFFETT WARREN E | Director, 10% Owner | C | 25 | – | – |
| May 18, 2026 | BUFFETT WARREN E | Director, 10% Owner | G | 18,646 | $0.0000 | $0.00 |
| May 18, 2026 | BUFFETT WARREN E | Director, 10% Owner | G | 18,646 | $0.0000 | $0.00 |
| May 18, 2026 | BUFFETT WARREN E | Director, 10% Owner | C | 37,500 | $0.0000 | $0.00 |
| May 14, 2026 | GUYMAN CHARLOTTE | Director | G | 574 | $0.0000 | $0.00 |
| May 6, 2026 | O'Sullivan Michael J. | See Remarks | P | 53 | $470.2200 | $24.92K |
| May 6, 2026 | O'Sullivan Michael J. | See Remarks | P | 483 | $467.1300 | $225.62K |
| May 1, 2026 | BERKSHIRE HATHAWAY INC | 10% Owner | S | 1,220,376 | $149.8429 | $182.86M |
| Mar 27, 2026 | Jain Ajit | Vice Chairman | G | 22 | – | – |
| Mar 17, 2026 | BUFFETT WARREN E | Chairman and CEO | G | 2 | – | – |
| Mar 4, 2026 | Abel Gregory E. | See Remarks | P | 1 | – | – |
| Mar 4, 2026 | Abel Gregory E. | See Remarks | P | 1 | – | – |
| Mar 4, 2026 | Abel Gregory E. | See Remarks | P | 1 | – | – |
| Mar 4, 2026 | Abel Gregory E. | See Remarks | P | 2 | – | – |
| Mar 4, 2026 | Abel Gregory E. | See Remarks | P | 1 | – | – |
| Mar 4, 2026 | Abel Gregory E. | See Remarks | P | 1 | – | – |
| Mar 4, 2026 | Abel Gregory E. | See Remarks | P | 1 | – | – |
| Mar 4, 2026 | Abel Gregory E. | See Remarks | P | 1 | – | – |
| Mar 4, 2026 | Abel Gregory E. | See Remarks | P | 1 | – | – |
| Mar 4, 2026 | Abel Gregory E. | See Remarks | P | 2 | – | – |
| Mar 4, 2026 | Abel Gregory E. | See Remarks | P | 1 | – | – |
| Mar 4, 2026 | Abel Gregory E. | See Remarks | P | 2 | – | – |
| Mar 4, 2026 | Abel Gregory E. | See Remarks | P | 1 | – | – |
| Mar 4, 2026 | Abel Gregory E. | See Remarks | P | 1 | – | – |
| Mar 4, 2026 | Abel Gregory E. | See Remarks | P | 1 | – | – |
| Mar 4, 2026 | Abel Gregory E. | See Remarks | P | 1 | – | – |
| Mar 4, 2026 | Abel Gregory E. | See Remarks | P | 1 | – | – |
| Mar 4, 2026 | Abel Gregory E. | See Remarks | P | 1 | – | – |
| Jan 29, 2026 | BERKSHIRE HATHAWAY INC | 10% Owner | S | 1,658,480 | $120.5561 | $199.94M |
| Jan 16, 2026 | BERKSHIRE HATHAWAY INC | 10% Owner | S | 7,685 | $83.7221 | $643.40K |
| Jan 15, 2026 | BERKSHIRE HATHAWAY INC | 10% Owner | S | 18,125 | $84.0387 | $1.52M |
| Jan 14, 2026 | BERKSHIRE HATHAWAY INC | 10% Owner | S | 59,411 | $83.7909 | $4.98M |
| Jan 13, 2026 | BERKSHIRE HATHAWAY INC | 10% Owner | S | 30,643 | $82.7759 | $2.54M |
| Jan 12, 2026 | BERKSHIRE HATHAWAY INC | 10% Owner | S | 66,568 | $83.2746 | $5.54M |
| Jan 9, 2026 | BERKSHIRE HATHAWAY INC | 10% Owner | S | 18,689 | $82.3952 | $1.54M |
| Jan 8, 2026 | BERKSHIRE HATHAWAY INC | 10% Owner | S | 65,071 | $82.2489 | $5.35M |