| May 22, 2026 | Other Gift ⓘ | Class B Common Stock | BUFFETT WARREN E CEO | -160 | $0.00 | $0 | 1,162 | low |
| May 18, 2026 | Other Conversion · Class A Common Stock ⓘ | Class A Common Stock | BUFFETT WARREN E CEO | -25 | — | — | 196,290 | low |
| May 18, 2026 | Other Gift ⓘ | Class B Common Stock | BUFFETT WARREN E CEO | -18,646 | $0.00 | $0 | 1,322 | low |
| May 18, 2026 | Other Gift ⓘ | Class B Common Stock | BUFFETT WARREN E CEO | -18,646 | $0.00 | $0 | 19,968 | low |
| May 18, 2026 | Other Conversion | Class B Common Stock | BUFFETT WARREN E CEO | +37,500 | $0.00 | $0 | 38,614 | low |
| May 14, 2026 | Other Gift ⓘ | Class B Common Stock | GUYMAN CHARLOTTE Director | -574 | $0.00 | $0 | 2,888 | low |
| May 6, 2026 | Buy ⓘ | Class B Common Stock | O'Sullivan Michael J. Executive | +53 | $470.22 | $24.9K | 663 | low |
| May 6, 2026 | Buy ⓘ | Class B Common Stock | O'Sullivan Michael J. Executive | +483 | $467.13 | $225.6K | 610 | medium |
| Mar 27, 2026 | Other Gift ⓘ | Class B Common Stock | Jain Ajit Executive | -22 | — | — | 330 | low |
| Mar 17, 2026 | Other Gift · Class A Common Stock | Class A Common Stock | BUFFETT WARREN E CEO | -2 | — | — | 196,315 | low |
| Mar 4, 2026 | Buy · Class A Common Stock | Class A Common Stock | Abel Gregory E. Executive | +1 | — | — | 249 | low |
| Mar 4, 2026 | Buy · Class A Common Stock | Class A Common Stock | Abel Gregory E. Executive | +1 | — | — | 248 | low |
| Mar 4, 2026 | Buy · Class A Common Stock | Class A Common Stock | Abel Gregory E. Executive | +1 | — | — | 247 | low |
| Mar 4, 2026 | Buy · Class A Common Stock | Class A Common Stock | Abel Gregory E. Executive | +2 | — | — | 246 | low |
| Mar 4, 2026 | Buy · Class A Common Stock | Class A Common Stock | Abel Gregory E. Executive | +1 | — | — | 244 | low |
| Mar 4, 2026 | Buy · Class A Common Stock | Class A Common Stock | Abel Gregory E. Executive | +1 | — | — | 243 | low |
| Mar 4, 2026 | Buy · Class A Common Stock | Class A Common Stock | Abel Gregory E. Executive | +1 | — | — | 242 | low |
| Mar 4, 2026 | Buy · Class A Common Stock | Class A Common Stock | Abel Gregory E. Executive | +1 | — | — | 241 | low |
| Mar 4, 2026 | Buy · Class A Common Stock | Class A Common Stock | Abel Gregory E. Executive | +1 | — | — | 240 | low |
| Mar 4, 2026 | Buy · Class A Common Stock | Class A Common Stock | Abel Gregory E. Executive | +2 | — | — | 239 | low |
| Mar 4, 2026 | Buy · Class A Common Stock | Class A Common Stock | Abel Gregory E. Executive | +1 | — | — | 237 | low |
| Mar 4, 2026 | Buy · Class A Common Stock | Class A Common Stock | Abel Gregory E. Executive | +2 | — | — | 236 | low |
| Mar 4, 2026 | Buy · Class A Common Stock | Class A Common Stock | Abel Gregory E. Executive | +1 | — | — | 234 | low |
| Mar 4, 2026 | Buy · Class A Common Stock | Class A Common Stock | Abel Gregory E. Executive | +1 | — | — | 233 | low |
| Mar 4, 2026 | Buy · Class A Common Stock | Class A Common Stock | Abel Gregory E. Executive | +1 | — | — | 232 | low |
| Mar 4, 2026 | Buy · Class A Common Stock | Class A Common Stock | Abel Gregory E. Executive | +1 | — | — | 231 | low |
| Mar 4, 2026 | Buy · Class A Common Stock | Class A Common Stock | Abel Gregory E. Executive | +1 | — | — | 230 | low |
| Mar 4, 2026 | Buy · Class A Common Stock | Class A Common Stock | Abel Gregory E. Executive | +1 | — | — | 229 | low |