104 transactions by 13 insiders, from November 26, 2025 to October 7, 2026.
People inside the company. What they do with their own shares is the reason this data exists.
| Insider | Trades | Planned | Bought | Sold |
|---|---|---|---|---|
| Jeffrey SonnenfeldDir | 7 | — | — | — |
| Armando J. OliveraDir | 7 | — | — | — |
| Amy BanseDir | 6 | — | — | — |
| Stuart A. MillerCEO | 6 | 2/6 | — | — |
| Diane J. BessetteCFO | 5 | 2/5 | — | — |
| Dacona SmithDir | 4 | — | — | — |
| Martin Katherine LeeGC | 4 | — | — | — |
| Sherrill W. HudsonDir | 4 | — | — | — |
| Teri P. McClureDir | 4 | — | — | — |
| David M. CollinsCAO | 4 | 3/4 | — | — |
| Theron I. GilliamDir | 4 | — | — | — |
| Serena WolfeDir | 4 | — | — | — |
Holders above 10%, often funds. They file the same form, but they trade for portfolio reasons, not because of what they know.
| Insider | Trades | Planned | Bought | Sold |
|---|---|---|---|---|
| BERKSHIRE HATHAWAY INC10% | 45 | — | $595.3M | — |
104 in total, newest filings first.
| Insider | Date | Code | Shares | Price | Value |
|---|---|---|---|---|---|
| Armando J. OliveraDir | Oct 7 | A | 24 | $76.13 | $2K |
| Jeffrey SonnenfeldDir | Oct 7 | A | 21 | $76.13 | $2K |
| Sherrill W. HudsonDir | Oct 7 | A | 15 | $76.13 | $1K |
| Dacona SmithDir | Oct 7 | A | 15 | $76.13 | $1K |
| Serena WolfeDir | Oct 7 | A | 15 | $76.13 | $1K |
| Theron I. GilliamDir | Oct 7 | A | 15 | $76.13 | $1K |
| Teri P. McClureDir | Oct 7 | A | 15 | $76.13 | $1K |
| Amy BanseDir | Oct 7 | A | 15 | $76.13 | $1K |
| BERKSHIRE HATHAWAY INC10%JOINT | Oct 2 | P | 299 | $79.74 | $24K |
| BERKSHIRE HATHAWAY INC10%JOINT | Oct 2 | P | 5,135 | $78.77 | $404K |
| BERKSHIRE HATHAWAY INC10%JOINT | Oct 2 | P | 2,452 | $77.93 | $191K |
| BERKSHIRE HATHAWAY INC10%JOINT | Oct 2 | P | 2,290 | $77.12 | $177K |
| BERKSHIRE HATHAWAY INC10%JOINT | Oct 1 | P | 100 | $80.00 | $8K |
| BERKSHIRE HATHAWAY INC10%JOINT | Oct 1 | P | 950 | $79.51 | $76K |
| BERKSHIRE HATHAWAY INC10%JOINT | Oct 1 | P | 3,802 | $78.26 | $298K |
| BERKSHIRE HATHAWAY INC10%JOINT | Oct 2 | P | 20,200 | $81.90 | $1.7M |
| BERKSHIRE HATHAWAY INC10%JOINT | Oct 2 | P | 44,300 | $81.14 | $3.6M |
| BERKSHIRE HATHAWAY INC10%JOINT | Oct 2 | P | 842,753 | $80.04 | $67.5M |
| BERKSHIRE HATHAWAY INC10%JOINT | Oct 2 | P | 342,553 | $79.03 | $27.1M |
| BERKSHIRE HATHAWAY INC10%JOINT | Oct 2 | P | 448,113 | $78.37 | $35.1M |
| BERKSHIRE HATHAWAY INC10%JOINT | Oct 1 | P | 186,991 | $81.46 | $15.2M |
| BERKSHIRE HATHAWAY INC10%JOINT | Oct 1 | P | 92,830 | $80.57 | $7.5M |
| BERKSHIRE HATHAWAY INC10%JOINT | Oct 1 | P | 425,869 | $79.49 | $33.9M |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 30 | P | 4,008 | $79.98 | $321K |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 29 | P | 100 | $80.00 | $8K |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 30 | P | 638,813 | $81.59 | $52.1M |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 29 | P | 12,289 | $81.95 | $1.0M |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 28 | P | 5,200 | $81.96 | $426K |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 25 | P | 7,022 | $79.53 | $558K |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 24 | P | 2,975 | $79.91 | $238K |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 24 | P | 9,415 | $79.42 | $748K |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 23 | P | 1,263 | $79.99 | $101K |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 25 | P | 171,723 | $81.60 | $14.0M |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 25 | P | 313,379 | $80.90 | $25.4M |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 24 | P | 241,692 | $81.44 | $19.7M |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 24 | P | 399,238 | $80.58 | $32.2M |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 23 | P | 532,993 | $81.65 | $43.5M |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 21 | P | 18,146 | $76.62 | $1.4M |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 21 | P | 4,888 | $75.76 | $370K |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 18 | P | 500 | $78.38 | $39K |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 18 | P | 710 | $76.98 | $55K |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 18 | P | 390 | $75.76 | $30K |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 18 | P | 33,122 | $74.80 | $2.5M |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 17 | P | 8,306 | $77.94 | $647K |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 17 | P | 8,959 | $76.96 | $689K |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 21 | P | 483,809 | $77.97 | $37.7M |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 21 | P | 160,275 | $77.23 | $12.4M |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 18 | P | 7,900 | $78.88 | $623K |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 18 | P | 68,760 | $78.09 | $5.4M |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 18 | P | 51,586 | $77.06 | $4.0M |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 18 | P | 1,218,429 | $76.39 | $93.1M |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 17 | P | 410,164 | $79.41 | $32.6M |
| BERKSHIRE HATHAWAY INC10%JOINT | Sep 17 | P | 267,585 | $78.41 | $21.0M |
| Jeffrey SonnenfeldDir | Aug 31 | A | 341 | $84.11 | $29K |
| Armando J. OliveraDir | Aug 31 | A | 535 | $84.11 | $45K |
| Jeffrey SonnenfeldDir | Jul 10 | A | 17 | $84.27 | $1K |
| Teri P. McClureDir | Jul 10 | A | 14 | $84.27 | $1K |
| Serena WolfeDir | Jul 10 | A | 14 | $84.27 | $1K |
| Dacona SmithDir | Jul 10 | A | 14 | $84.27 | $1K |
| Armando J. OliveraDir | Jul 10 | A | 19 | $84.27 | $2K |
| Sherrill W. HudsonDir | Jul 10 | A | 14 | $84.27 | $1K |
| Theron I. GilliamDir | Jul 10 | A | 14 | $84.27 | $1K |
| Amy BanseDir | Jul 10 | A | 14 | $84.27 | $1K |
| Jeffrey SonnenfeldDir | May 29 | A | 320 | $89.78 | $29K |
| Armando J. OliveraDir | May 29 | A | 501 | $89.78 | $45K |
| Stuart A. MillerCEO | May 11 | G | 2,000 | $0.00 | — |
| Jeffrey SonnenfeldDir | Apr 22 | A | 13 | $94.45 | $1K |
| Armando J. OliveraDir | Apr 22 | A | 14 | $94.45 | $1K |
| Teri P. McClureDir | Apr 22 | A | 12 | $94.45 | $1K |
| Serena WolfeDir | Apr 22 | A | 12 | $94.45 | $1K |
| Dacona SmithDir | Apr 22 | A | 12 | $94.45 | $1K |
| Sherrill W. HudsonDir | Apr 22 | A | 12 | $94.45 | $1K |
| Theron I. GilliamDir | Apr 22 | A | 12 | $94.45 | $1K |
| Amy BanseDir | Apr 22 | A | 12 | $94.45 | $1K |
| Teri P. McClureDir | Apr 8 | A | 2,313 | $0.00 | — |
| Serena WolfeDir | Apr 8 | A | 2,313 | $0.00 | — |
| Dacona SmithDir | Apr 8 | A | 2,313 | $0.00 | — |
| Jeffrey SonnenfeldDir | Apr 8 | A | 2,312 | $0.00 | — |
| Armando J. OliveraDir | Apr 8 | A | 2,312 | $0.00 | — |
| Sherrill W. HudsonDir | Apr 8 | A | 2,313 | $0.00 | — |
| Theron I. GilliamDir | Apr 8 | A | 2,313 | $0.00 | — |
| Amy BanseDir | Apr 8 | A | 2,313 | $0.00 | — |
| Stuart A. MillerCEO | Mar 16 | FPLAN | 59,958 | $95.95 | $5.8M |
| Stuart A. MillerCEO | Mar 16 | DPLAN | 55,490 | $0.00 | — |
| Diane J. BessetteCFO | Mar 16 | FPLAN | 4,698 | $95.95 | $451K |
| Diane J. BessetteCFO | Mar 16 | DPLAN | 4,862 | $0.00 | — |
| Jeffrey SonnenfeldDir | Feb 27 | A | 251 | $114.36 | $29K |
| Armando J. OliveraDir | Feb 27 | A | 393 | $114.36 | $45K |
| Martin Katherine LeeGC | Feb 14 | F | 989 | $122.28 | $121K |
| Martin Katherine LeeGC | Feb 14 | F | 2,966 | $122.28 | $363K |
| David M. CollinsCAO | Feb 14 | FPLAN | 998 | $122.28 | $122K |
| David M. CollinsCAO | Feb 14 | FPLAN | 836 | $122.28 | $102K |
| David M. CollinsCAO | Feb 14 | FPLAN | 1,177 | $122.28 | $144K |
| Stuart A. MillerCEO | Jan 20 | F | 25,913 | $115.16 | $3.0M |
| Stuart A. MillerCEO | Jan 20 | A | 69,035 | $0.00 | — |
| Stuart A. MillerCEO | Jan 20 | A | 161,083 | $0.00 | — |
| Martin Katherine LeeGC | Jan 20 | A | 8,683 | $0.00 | — |
| Martin Katherine LeeGC | Jan 20 | A | 8,683 | $0.00 | — |
| David M. CollinsCAO | Jan 20 | A | 8,687 | $0.00 | — |
| Diane J. BessetteCFO | Jan 20 | F | 6,871 | $115.16 | $791K |
| Diane J. BessetteCFO | Jan 20 | A | 20,625 | $0.00 | — |
| Diane J. BessetteCFO | Jan 20 | A | 20,625 | $0.00 | — |
| Amy BanseDir | Nov 28 | A | 133 | $0.00 | — |
| Amy BanseDir | Nov 26 | J | 220 | — | — |