Formula One Group (FWONK) has 15 known insider and institutional holders on record. The largest holder is BERKSHIRE HATHAWAY INC with 43,552,860 shares. Other notable holders include MAFFEI GREGORY B and MALONE JOHN C.
Over the last 12 months, insiders have made 31 transactions in FWONK stock — 4 buys (valued at $1.81M) and 4 sells (valued at $27.73M).
FWONK Insider Ownership
Top Holder
BERKSHIRE HATHAWAY INC
43,552,860 shares
Buys (12 mo)
4
$1.81M value
Sells (12 mo)
4
$27.73M value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Berkshire Hathaway Inc |
10 Percent Owner |
43,552,860 |
2024-01-18 |
|
| 2 |
Maffei Gregory B |
President, CEO |
369,606 |
2023-03-07 |
|
| 3 |
Malone John C |
10 Percent Owner |
250,000 |
2026-03-31 |
|
| 4 |
Carey Chase |
Director |
83,536 |
2025-12-18 |
|
| 5 |
Rosenthaler Albert E |
Chief Corp. Dev. Officer |
40,768 |
2023-03-17 |
|
| 6 |
Wilm Renee L |
Chief Legal/admin Officer |
27,187 |
2026-03-09 |
|
| 7 |
Chang Derek |
President & CEO |
23,628 |
2025-05-14 |
|
| 8 |
Wendling Brian J |
CAO/pfo |
14,046 |
2026-03-09 |
|
| 9 |
Romrell Larry E |
Director |
1,141 |
2024-12-10 |
|
| 10 |
Gilchrist Malcolm Ian Grant |
Director |
1,141 |
2024-12-10 |
|
| 11 |
Gamco Investors, Inc. Et Al |
10 Percent Owner |
1,010 |
2023-07-10 |
|
| 12 |
Wong Andrea L |
Director |
671 |
2025-05-27 |
|
| 13 |
Bennett Robert R |
Director |
454 |
2024-12-10 |
|
| 14 |
Malone Evan Daniel |
Director |
239 |
2022-12-12 |
|
| 15 |
Deevy Brian |
Director |
227 |
2024-12-10 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-30 |
Malone John C |
10 Percent Owner |
Informative Sell |
250,000 |
$71.75 |
$17.94M |
| 2026-03-05 |
Wilm Renee L |
Chief Legal/admin Officer |
Tax Withholding of RSU |
7,791 |
$85.48 |
$665.97K |
| 2026-03-05 |
Wendling Brian J |
CAO/pfo |
Tax Withholding of RSU |
4,002 |
$85.48 |
$342.09K |
| 2026-02-04 |
Wilm Renee L |
Chief Legal/admin Officer |
RSU Award |
17,808 |
- |
- |
| 2026-02-04 |
Wendling Brian J |
CAO/pfo |
RSU Award |
9,127 |
- |
- |
| 2025-12-17 |
Carey Chase |
Director |
Option Exercise (Sell) |
83,536 |
$33.22 |
$2.78M |
| 2025-12-16 |
Carey Chase |
Director |
Option Exercise (Sell) |
83,500 |
$33.22 |
$2.77M |
| 2025-12-15 |
Wilm Renee L |
Chief Legal/admin Officer |
Other (Sell) |
604 |
$20.03 |
$12.1K |
| 2025-12-15 |
Wendling Brian J |
CAO/pfo |
Other (Sell) |
17,266 |
- |
- |
| 2025-12-15 |
Wong Andrea L |
Director |
Other (Sell) |
898 |
- |
- |
| 2025-12-15 |
Gilchrist Malcolm Ian Grant |
Director |
Other (Sell) |
109 |
$27.92 |
$3.04K |
| 2025-12-15 |
Malone Evan Daniel |
Director |
Other (Sell) |
1,152 |
$33.97 |
$39.13K |
| 2025-12-15 |
Deevy Brian |
Director |
Other (Sell) |
54 |
$27.92 |
$1.51K |
| 2025-12-15 |
Chang Derek |
President & CEO |
Other (Sell) |
1,024 |
- |
- |
| 2025-12-15 |
Carey Chase |
Director |
Other (Sell) |
219 |
- |
- |
| 2025-12-15 |
Romrell Larry E |
Director |
Other (Sell) |
163 |
$20.86 |
$3.4K |
| 2025-12-15 |
Bennett Robert R |
Director |
Other (Sell) |
191,741 |
- |
- |
| 2025-12-15 |
Malone John C |
10 Percent Owner, Officer: Chairman of the Board |
Other (Sell) |
26,533 |
- |
- |
| 2025-12-09 |
Wilm Renee L |
Chief Legal/admin Officer |
Option Exercise (Sell) |
2,192 |
- |
- |
| 2025-12-09 |
Wendling Brian J |
CAO/pfo |
Tax Withholding of RSU |
2,270 |
$90.56 |
$205.57K |
| 2025-05-22 |
Wong Andrea L |
Director |
Informative Sell |
385 |
$76.27 |
$29.36K |
| 2025-05-16 |
Carey Chase |
Director |
Option Exercise (ITM) |
500 |
$85.00 |
$42.5K |
| 2025-05-13 |
Wong Andrea L |
Director |
Option Exercise (Sell) |
1,552 |
$42.26 |
$65.59K |
| 2025-05-12 |
Chang Derek |
President & CEO |
RSU Award |
23,628 |
$76.45 |
$1.81M |
| 2025-05-13 |
Carey Chase |
Director |
Informative Sell |
100,000 |
$96.38 |
$9.64M |
