FWONK Insider Transactions
922 retained open-market purchase and sale rows from SEC Forms 3, 4 and 5, newest first. This page shows rows 1–100; provenance stays internal.
FWONK insiders transaction timeline
PurchaseSale
| Insider profile | Role | Date | Transaction | Shares | Price |
|---|
| Wilm Renee L | Chief Legal/Admin Officer | 2026-06-15 | Sale | 11,597.0 | $90.09 |
|---|
| CAREY CHASE | Director | 2026-05-27 | Sale | 98,546.0 | $90.27 |
|---|
| CAREY CHASE | Director | 2026-05-27 | Sale | 1,454.0 | $91.12 |
|---|
| CAREY CHASE | Director | 2025-12-17 | Sale | 57,836.0 | $96.76 |
|---|
| CAREY CHASE | Director | 2025-12-17 | Sale | 25,700.0 | $97.36 |
|---|
| CAREY CHASE | Director | 2025-12-16 | Sale | 81,487.0 | $95.78 |
|---|
| CAREY CHASE | Director | 2025-12-16 | Sale | 2,013.0 | $96.16 |
|---|
| CAREY CHASE | Director | 2025-11-12 | Sale | 41,383.0 | $102.5 |
|---|
| CAREY CHASE | Director | 2025-11-12 | Sale | 39,623.0 | $103.29 |
|---|
| CAREY CHASE | Director | 2025-11-10 | Sale | 99,180.0 | $102.48 |
|---|
| CAREY CHASE | Director | 2025-11-10 | Sale | 9,941.0 | $103.12 |
|---|
| Wilm Renee L | Chief Legal/Admin Officer | 2025-11-07 | Sale | 6,524.0 | $84.34 |
|---|
| Wilm Renee L | Chief Legal/Admin Officer | 2025-11-07 | Sale | 4,676.0 | $102.42 |
|---|
| Wendling Brian J | CAO/PFO | 2025-09-12 | Sale | 4,430.0 | $102.0 |
|---|
| Wendling Brian J | CAO/PFO | 2025-09-10 | Sale | 5,021.0 | $100.2 |
|---|
| Gilchrist Malcolm Ian Grant | Director | 2025-09-08 | Sale | 898.0 | $100.2 |
|---|
| Gilchrist Malcolm Ian Grant | Director | 2025-08-27 | Sale | 868.0 | $97.11 |
|---|
| Gilchrist Malcolm Ian Grant | Director | 2025-08-25 | Sale | 3,885.0 | $102.44 |
|---|
| Wong Andrea L | Director | 2025-08-12 | Sale | 2,615.0 | $97.07 |
|---|
| Wong Andrea L | Director | 2025-05-22 | Sale | 385.0 | $76.27 |
|---|
| Wong Andrea L | Director | 2025-05-22 | Sale | 1,200.0 | $97.21 |
|---|
| CAREY CHASE | Director | 2025-05-13 | Sale | 100,000.0 | $96.38 |
|---|
| CAREY CHASE | Director | 2025-05-12 | Sale | 50,000.0 | $94.6 |
|---|
| Wendling Brian J | CAO/PFO | 2025-05-09 | Sale | 9,500.0 | $95.21 |
|---|
| Wilm Renee L | Chief Legal/Admin Officer | 2025-05-09 | Sale | 66,510.0 | $95.25 |
|---|
| Gilchrist Malcolm Ian Grant | Director | 2025-05-09 | Sale | 1,303.0 | $94.79 |
|---|
| MAFFEI GREGORY B | President, CEO | 2024-12-16 | Sale | 34,603.0 | $71.52 |
|---|
| MAFFEI GREGORY B | President, CEO | 2024-12-16 | Sale | 860.0 | $72.05 |
|---|
| Wendling Brian J | CAO/PFO | 2024-11-21 | Sale | 1,094.0 | $69.57 |
|---|
| Wong Andrea L | Director | 2024-09-30 | Sale | 5,274.0 | $50.13 |
|---|
| Wong Andrea L | Director | 2024-09-30 | Sale | 1,038.0 | $48.76 |
|---|
| Wong Andrea L | Director | 2024-09-25 | Sale | 1,604.0 | $47.41 |
|---|
| Wilm Renee L | Chief Legal/Admin Officer | 2024-09-20 | Sale | 19,202.0 | $78.78 |
|---|
| Wendling Brian J | CAO/PFO | 2024-09-20 | Sale | 3,113.0 | $78.8 |
|---|
| Wendling Brian J | CAO/PFO | 2024-09-20 | Sale | 6,898.0 | $71.54 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-06-14 | Sale | 1,167.0 | $34.05 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-06-14 | Sale | 1,167.0 | $34.05 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-06-14 | Sale | 11,252.0 | $33.02 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-06-14 | Sale | 11,252.0 | $33.02 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-06-14 | Sale | 1,167.0 | $34.05 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-06-14 | Sale | 1,167.0 | $34.05 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-06-14 | Sale | 11,252.0 | $33.02 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-06-14 | Sale | 11,252.0 | $33.02 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-06-13 | Sale | 52,911.0 | $34.06 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-06-13 | Sale | 52,911.0 | $34.06 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-06-13 | Sale | 52,911.0 | $34.06 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-06-13 | Sale | 52,911.0 | $34.06 |
|---|
| Wendling Brian J | CAO/PFO | 2024-06-04 | Sale | 145.0 | $70.21 |
|---|
| MALONE JOHN C | Chairman of the Board | 2024-05-14 | Sale | 120,984.0 | $69.7 |
|---|
| MALONE JOHN C | Chairman of the Board | 2024-05-13 | Sale | 113,807.0 | $68.81 |
|---|
| MALONE JOHN C | Chairman of the Board | 2024-05-13 | Sale | 25,258.0 | $69.75 |
|---|
| MALONE JOHN C | Chairman of the Board | 2024-05-10 | Sale | 82,112.0 | $70.46 |
|---|
| MALONE JOHN C | Chairman of the Board | 2024-05-10 | Sale | 7,839.0 | $71.24 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-04-29 | Purchase | 311,637.0 | $25.47 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-04-29 | Purchase | 311,637.0 | $25.47 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-04-26 | Purchase | 219,303.0 | $24.46 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-04-26 | Purchase | 219,303.0 | $24.46 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-04-26 | Purchase | 277,248.0 | $24.34 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-04-26 | Purchase | 277,248.0 | $24.34 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-04-25 | Purchase | 157,309.0 | $24.43 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-04-25 | Purchase | 157,309.0 | $24.43 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-04-25 | Purchase | 227,469.0 | $24.36 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-04-25 | Purchase | 227,469.0 | $24.36 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-04-24 | Purchase | 123,388.0 | $25.22 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-04-24 | Purchase | 123,388.0 | $25.22 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-04-24 | Purchase | 142,299.0 | $25.16 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-04-24 | Purchase | 142,299.0 | $25.16 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-04-12 | Purchase | 413,227.0 | $25.58 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-04-12 | Purchase | 413,227.0 | $25.58 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-04-12 | Purchase | 317,017.0 | $25.67 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-04-12 | Purchase | 317,017.0 | $25.67 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-04-11 | Purchase | 208,000.0 | $26.13 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-04-11 | Purchase | 208,000.0 | $26.13 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-04-11 | Purchase | 168,650.0 | $26.19 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-04-11 | Purchase | 168,650.0 | $26.19 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-04-10 | Purchase | 513,104.0 | $25.96 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-04-10 | Purchase | 513,104.0 | $25.96 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-04-10 | Purchase | 318,223.0 | $26.02 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-04-10 | Purchase | 318,223.0 | $26.02 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-04-08 | Purchase | 938,896.0 | $26.98 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-04-08 | Purchase | 938,896.0 | $26.98 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-04-08 | Purchase | 399,677.0 | $26.95 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-04-08 | Purchase | 399,677.0 | $26.95 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-04-05 | Purchase | 234,729.0 | $27.21 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-04-05 | Purchase | 234,729.0 | $27.21 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-04-05 | Purchase | 165,517.0 | $27.22 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-04-05 | Purchase | 165,517.0 | $27.22 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-04-04 | Purchase | 1,250,000.0 | $27.76 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-04-04 | Purchase | 1,250,000.0 | $27.76 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-04-04 | Purchase | 557,511.0 | $27.64 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-04-04 | Purchase | 557,511.0 | $27.64 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-03-28 | Purchase | 158.0 | $29.5 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-03-28 | Purchase | 158.0 | $29.5 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-03-28 | Purchase | 3,408.0 | $29.5 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-03-28 | Purchase | 3,408.0 | $29.5 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-03-27 | Purchase | 189,759.0 | $29.25 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-03-27 | Purchase | 189,759.0 | $29.25 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-03-27 | Purchase | 217,664.0 | $29.25 |
|---|
| BERKSHIRE HATHAWAY INC | TenPercentOwner | 2024-03-27 | Purchase | 217,664.0 | $29.25 |
|---|
| BUFFETT WARREN E | TenPercentOwner | 2024-03-26 | Purchase | 2,331,514.0 | $29.1 |
|---|