Only open-market buys / sells (codes P/S) are a conviction signal; grants, option exercises, tax-withholding, and gifts are compensation mechanics, shown but greyed. The trailing 12-month tallies run to today but the store covers filings through 2026-06-30 only (SEC bulk data sets publish quarterly), so recent activity may be absent.
| Date | Insider | Role | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-06-23 | Jackson Richard A. | Director,Officer | +Buy | 4,770 | $52.38 | $249,853 |
| 2026-06-01 | Hollub Vicki A. | Director | −Tax w/h | 73,477 | $58.92 | $4M |
| 2026-06-01 | Hollub Vicki A. | Director | +Grant | 3,183 | — | — |
| 2026-06-01 | Hollub Vicki A. | Director | −Tax w/h | 701 | $58.92 | $41,303 |
| 2026-06-01 | Jackson Richard A. | Director,Officer | +Grant | 101,833 | — | — |
| 2026-05-04 | ONeill Claire | Director | +Grant | 3,734 | — | — |
| 2026-05-04 | Shearer Bob | Director | +Grant | 3,734 | — | — |
| 2026-05-04 | POLADIAN AVEDICK BARUYR | Director | +Grant | 4,149 | — | — |
| 2026-05-04 | KLESSE WILLIAM R | Director | +Grant | 4,149 | — | — |
| 2026-05-04 | KLESSE WILLIAM R | Director | −Tax w/h | 913 | $60.27 | $55,027 |
| 2026-05-04 | GUTIERREZ CARLOS M | Director | +Grant | 3,734 | — | — |
| 2026-05-04 | GOULD ANDREW | Director | +Grant | 4,978 | — | — |
| 2026-05-04 | GOULD ANDREW | Director | −Tax w/h | 1,494 | $60.27 | $90,043 |
| 2026-05-04 | Robinson Kenneth B. | Director | −Tax w/h | 913 | $60.27 | $55,027 |
| 2026-05-04 | Robinson Kenneth B. | Director | +Grant | 4,149 | — | — |
| 2026-05-04 | BAILEY VICKY A | Director | −Tax w/h | 1,223 | $60.27 | $73,710 |
| 2026-05-04 | BAILEY VICKY A | Director | +Grant | 3,734 | — | — |
| 2026-05-04 | MOORE JACK B | Director | +Grant | 6,720 | — | — |
| 2026-05-04 | MOORE JACK B | Director | −Tax w/h | 1,479 | $60.27 | $89,139 |
| 2026-04-14 | POLADIAN AVEDICK BARUYR | Director | −Gift | 5,000 | — | — |
| 2026-04-14 | POLADIAN AVEDICK BARUYR | Director | +Gift | 5,000 | — | — |
| 2026-04-14 | POLADIAN AVEDICK BARUYR | Director | +Gift | 5,000 | — | — |
| 2026-04-14 | POLADIAN AVEDICK BARUYR | Director | +Gift | 5,000 | — | — |
| 2026-04-14 | POLADIAN AVEDICK BARUYR | Director | −Gift | 5,000 | — | — |
| 2026-04-14 | POLADIAN AVEDICK BARUYR | Director | −Gift | 5,000 | — | — |
| 2026-03-01 | Champion Christopher O | Officer | +Grant | 13,565 | — | — |
| 2026-03-01 | Dillon Kenneth | Officer | +Grant | 27,883 | — | — |
| 2026-03-01 | Hollub Vicki A. | Director,Officer | +Grant | 94,198 | — | — |
| 2026-03-01 | Jackson Richard A. | Officer | +Grant | 37,679 | — | — |
| 2026-03-01 | Kerrigan Sylvia J | Officer | +Grant | 48,983 | — | — |
| 2026-03-01 | Simmons Jeff F | Officer | +Grant | 24,115 | — | — |
| 2026-03-01 | Mathew Sunil | Officer | +Grant | 26,376 | — | — |
| 2026-03-01 | Peterson Robert L | Officer | +Grant | 24,115 | — | — |
| 2026-02-28 | Champion Christopher O | Officer | −Tax w/h | 4,970 | $53.08 | $263,808 |
| 2026-02-28 | Dillon Kenneth | Officer | −Tax w/h | 10,131 | $53.08 | $537,753 |
| 2026-02-28 | Hollub Vicki A. | Director,Officer | −Tax w/h | 33,136 | $53.08 | $2M |
| 2026-02-28 | Jackson Richard A. | Officer | −Tax w/h | 10,131 | $53.08 | $537,753 |
| 2026-02-28 | Kerrigan Sylvia J | Officer | −Tax w/h | 18,304 | $53.08 | $971,576 |
| 2026-02-28 | Simmons Jeff F | Officer | −Tax w/h | 9,436 | $53.08 | $500,863 |
| 2026-02-28 | Mathew Sunil | Officer | −Tax w/h | 9,732 | $53.08 | $516,575 |
| 2026-02-28 | Peterson Robert L | Officer | −Tax w/h | 8,988 | $53.08 | $477,083 |
| 2026-02-23 | GUTIERREZ CARLOS M | Director | +Gift | 3,656 | — | — |
| 2026-02-18 | Champion Christopher O | Officer | +Grant | 9,197 | — | — |
| 2026-02-18 | Champion Christopher O | Officer | −Tax w/h | 3,712 | $47.11 | $174,872 |
| 2026-02-18 | Dillon Kenneth | Officer | +Grant | 18,393 | — | — |
| 2026-02-18 | Dillon Kenneth | Officer | −Tax w/h | 7,264 | $47.11 | $342,207 |
| 2026-02-18 | Hollub Vicki A. | Director,Officer | +Grant | 59,121 | — | — |
| 2026-02-18 | Hollub Vicki A. | Director,Officer | −Tax w/h | 23,265 | $47.11 | $1M |
| 2026-02-18 | Jackson Richard A. | Officer | −Tax w/h | 7,268 | $47.11 | $342,395 |
| 2026-02-18 | Jackson Richard A. | Officer | +Grant | 18,393 | — | — |
| 2026-02-18 | Peterson Robert L | Officer | −Tax w/h | 6,655 | $47.11 | $313,517 |
| 2026-02-18 | Peterson Robert L | Officer | +Grant | 16,817 | — | — |
| 2025-12-16 | KLESSE WILLIAM R | Director | +Buy | 5,000 | $38.98 | $194,900 |
| 2025-10-02 | Kerrigan Sylvia J | Officer | −Tax w/h | 5,324 | $44.23 | $235,481 |
| 2025-10-01 | Jackson Richard A. | Officer | +Grant | 31,434 | — | — |
| 2025-05-09 | GUTIERREZ CARLOS M | Director | +Gift | 3,723 | — | — |
| 2025-05-05 | ONeill Claire | Director | +Grant | 5,798 | — | — |
| 2025-05-05 | MOORE JACK B | Director | +Grant | 10,436 | — | — |
| 2025-05-05 | MOORE JACK B | Director | −Tax w/h | 2,296 | $38.81 | $89,108 |
| 2025-05-05 | Shearer Bob | Director | +Grant | 5,798 | — | — |
| 2025-05-05 | Robinson Kenneth B. | Director | −Tax w/h | 1,418 | $38.81 | $55,033 |
| 2025-05-05 | Robinson Kenneth B. | Director | +Grant | 6,442 | — | — |
| 2025-05-05 | POLADIAN AVEDICK BARUYR | Director | +Grant | 6,442 | — | — |
| 2025-05-05 | GUTIERREZ CARLOS M | Director | +Grant | 5,798 | — | — |
| 2025-05-05 | KLESSE WILLIAM R | Director | +Grant | 6,442 | — | — |
| 2025-05-05 | KLESSE WILLIAM R | Director | −Tax w/h | 1,418 | $38.81 | $55,033 |
| 2025-05-05 | GOULD ANDREW | Director | −Tax w/h | 1,933 | $38.81 | $75,020 |
| 2025-05-05 | GOULD ANDREW | Director | +Grant | 6,442 | — | — |
| 2025-05-05 | BAILEY VICKY A | Director | +Grant | 6,442 | — | — |
| 2025-05-05 | BAILEY VICKY A | Director | −Tax w/h | 2,110 | $38.81 | $81,889 |
| 2025-03-31 | Mathew Sunil | Officer | +Exercise | 4,491 | $21.30 | $95,658 |
| 2025-03-31 | KLESSE WILLIAM R | Director | +Exercise | 25,900 | $21.30 | $551,670 |
| 2025-03-31 | GOULD ANDREW | Director | +Exercise | 2,351 | $21.30 | $50,076 |
| 2025-03-31 | POLADIAN AVEDICK BARUYR | Director | +Exercise | 9,327 | $21.30 | $198,665 |
| 2025-03-01 | Champion Christopher O | Officer | +Grant | 14,743 | — | — |
| 2025-03-01 | Dillon Kenneth | Officer | +Grant | 30,304 | — | — |
| 2025-03-01 | Hollub Vicki A. | Director,Officer | +Grant | 100,328 | — | — |
| 2025-03-01 | Jackson Richard A. | Officer | +Grant | 30,304 | — | — |
| 2025-03-01 | Kerrigan Sylvia J | Officer | +Grant | 53,236 | — | — |
| 2025-03-01 | Mathew Sunil | Officer | +Grant | 27,028 | — | — |
| 2025-03-01 | Peterson Robert L | Officer | +Grant | 26,209 | — | — |
| 2025-03-01 | Simmons Jeff F | Officer | +Grant | 26,209 | — | — |
| 2025-02-28 | Champion Christopher O | Officer | −Tax w/h | 4,371 | $48.84 | $213,480 |
| 2025-02-28 | Dillon Kenneth | Officer | −Tax w/h | 8,826 | $48.84 | $431,062 |
| 2025-02-28 | Hollub Vicki A. | Director,Officer | −Tax w/h | 27,416 | $48.84 | $1M |
| 2025-02-28 | Jackson Richard A. | Officer | −Tax w/h | 8,597 | $48.84 | $419,877 |
| 2025-02-28 | Kerrigan Sylvia J | Officer | −Tax w/h | 10,904 | $48.84 | $532,551 |
| 2025-02-28 | Mathew Sunil | Officer | −Tax w/h | 10,567 | $48.84 | $516,092 |
| 2025-02-28 | Peterson Robert L | Officer | −Tax w/h | 7,991 | $48.84 | $390,280 |
| 2025-02-28 | Simmons Jeff F | Officer | −Tax w/h | 10,526 | $48.84 | $514,090 |
| 2025-02-12 | Champion Christopher O | Officer | −Tax w/h | 12,997 | $47.83 | $621,647 |
| 2025-02-12 | Champion Christopher O | Officer | +Grant | 20,360 | — | — |
| 2025-02-12 | Champion Christopher O | Officer | +Grant | 12,384 | — | — |
| 2025-02-12 | Dillon Kenneth | Officer | −Tax w/h | 25,846 | $47.83 | $1M |
| 2025-02-12 | Dillon Kenneth | Officer | +Grant | 40,718 | — | — |
| 2025-02-12 | Dillon Kenneth | Officer | +Grant | 24,766 | — | — |
| 2025-02-12 | Jackson Richard A. | Officer | −Tax w/h | 23,643 | $47.83 | $1M |
| 2025-02-12 | Jackson Richard A. | Officer | +Grant | 37,228 | — | — |
| 2025-02-12 | Jackson Richard A. | Officer | +Grant | 22,643 | — | — |
| 2025-02-12 | Mathew Sunil | Officer | +Grant | 41,039 | — | — |
| 2025-02-12 | Mathew Sunil | Officer | −Tax w/h | 16,231 | $47.83 | $776,329 |
| 2025-02-12 | Peterson Robert L | Officer | −Tax w/h | 23,646 | $47.83 | $1M |
| 2025-02-12 | Peterson Robert L | Officer | +Grant | 22,643 | — | — |
| 2025-02-12 | Peterson Robert L | Officer | +Grant | 37,228 | — | — |
| 2025-02-12 | Simmons Jeff F | Officer | −Tax w/h | 16,790 | $47.83 | $803,066 |
| 2025-02-12 | Simmons Jeff F | Officer | +Grant | 42,455 | — | — |
| 2025-02-12 | Hollub Vicki A. | Director,Officer | +Grant | 113,426 | — | — |
| 2025-02-12 | Hollub Vicki A. | Director,Officer | −Tax w/h | 68,646 | $47.83 | $3M |
| 2025-02-12 | Hollub Vicki A. | Director,Officer | +Grant | 68,989 | — | — |
| 2025-02-07 | BUFFETT WARREN E | TenPercentOwner | +Buy | 763,017 | $46.82 | $36M |
| 2024-12-19 | BUFFETT WARREN E | TenPercentOwner | +Buy | 241,706 | $46.31 | $11M |
| 2024-12-19 | BUFFETT WARREN E | TenPercentOwner | +Buy | 3,372,309 | $45.55 | $154M |
| 2024-12-18 | BUFFETT WARREN E | TenPercentOwner | +Buy | 2,430,924 | $46.16 | $112M |
| 2024-12-18 | BUFFETT WARREN E | TenPercentOwner | +Buy | 374,589 | $46.92 | $18M |
| 2024-12-17 | BUFFETT WARREN E | TenPercentOwner | +Buy | 2,477,362 | $46.25 | $115M |
| 2024-10-02 | Kerrigan Sylvia J | Officer | −Tax w/h | 5,324 | $53.44 | $284,515 |
| 2024-06-17 | BERKSHIRE HATHAWAY INC | TenPercentOwner | +Buy | 334,461 | $59.75 | $20M |
| 2024-06-14 | BERKSHIRE HATHAWAY INC | TenPercentOwner | +Buy | 1,060,653 | $59.59 | $63M |
| 2024-06-13 | BERKSHIRE HATHAWAY INC | TenPercentOwner | +Buy | 1,552,497 | $59.77 | $93M |
| 2024-06-12 | BUFFETT WARREN E | TenPercentOwner | +Buy | 765,899 | $60.28 | $46M |
Source: the SEC bulk insider (Form 3/4/5) data sets — non-derivative transactions in the issuer's common stock, most recent first, covering filings through 2026-06-30. Insiders file within 2 business days of a transaction, but the bulk sets publish quarterly, so this store lags live filings; option/derivative lines are excluded. Codes: P buy · S sell · A grant · M/X/C exercise · F tax · G gift.
Model-derived estimate for research. See the Disclaimer.
