FWONA · Insider Trading
Liberty Media Corporation Series A Common Stock
Every open-market purchase and sale reported by FWONA officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-03-31 | John C Malone | 10%+ Owner | Sell | −250,000 deriv. | — |
| 2024-09-12 | BERKSHIRE HATHAWAY INC | 10%+ Owner | J | −35,182,219 | — |
| 2024-09-12 | BERKSHIRE HATHAWAY INC | 10%+ Owner | J | −70,002,897 | — |
| 2024-06-17 | BERKSHIRE HATHAWAY INC | 10%+ Owner | Sell | −65,330 | −$2.21M |
| 2024-05-01 | BERKSHIRE HATHAWAY INC | 10%+ Owner | Buy | +311,637 | +$7.94M |
| 2024-04-26 | BERKSHIRE HATHAWAY INC | 10%+ Owner | Buy | +647,016 | +$15.87M |
| 2024-04-26 | BERKSHIRE HATHAWAY INC | 10%+ Owner | Buy | +500,000 | +$12.32M |
| 2024-04-12 | BERKSHIRE HATHAWAY INC | 10%+ Owner | Buy | +803,890 | +$20.84M |
| 2024-04-12 | BERKSHIRE HATHAWAY INC | 10%+ Owner | Buy | +1,134,331 | +$29.32M |
| 2024-04-08 | BERKSHIRE HATHAWAY INC | 10%+ Owner | Buy | +1,122,705 | +$30.69M |
| 2024-04-08 | BERKSHIRE HATHAWAY INC | 10%+ Owner | Buy | +2,423,625 | +$66.42M |
| 2024-03-28 | BERKSHIRE HATHAWAY INC | 10%+ Owner | Buy | +7,599,572 | +$221.18M |
| 2024-03-28 | BERKSHIRE HATHAWAY INC | 10%+ Owner | Buy | +2,521,431 | +$73.40M |
| 2024-03-25 | BERKSHIRE HATHAWAY INC | 10%+ Owner | Buy | +1,282,569 | +$36.91M |
| 2024-03-25 | BERKSHIRE HATHAWAY INC | 10%+ Owner | Buy | +1,276,439 | +$36.77M |
| 2024-03-12 | BERKSHIRE HATHAWAY INC | 10%+ Owner | Buy | +5,927,375 | +$176.68M |
| 2024-03-12 | BERKSHIRE HATHAWAY INC | 10%+ Owner | Buy | +3,720,082 | +$111.40M |
| 2024-03-06 | BERKSHIRE HATHAWAY INC | 10%+ Owner | Buy | +1,491,510 | +$43.58M |
| 2024-03-06 | BERKSHIRE HATHAWAY INC | 10%+ Owner | Buy | +2,183,430 | +$63.89M |
| 2024-02-01 | BERKSHIRE HATHAWAY INC | 10%+ Owner | Buy | +799,629 | +$24.29M |
| 2024-02-01 | BERKSHIRE HATHAWAY INC | 10%+ Owner | Buy | +1,028,053 | +$31.15M |
| 2024-01-25 | BERKSHIRE HATHAWAY INC | 10%+ Owner | Buy | +438,945 | +$13.60M |
| 2024-01-25 | BERKSHIRE HATHAWAY INC | 10%+ Owner | Buy | +1,002,741 | +$31.06M |
| 2024-01-17 | BERKSHIRE HATHAWAY INC | 10%+ Owner | Buy | +1,591,168 | +$48.36M |
| 2024-01-17 | BERKSHIRE HATHAWAY INC | 10%+ Owner | Buy | +1,203,024 | +$36.61M |
| 2021-11-03 | BERKSHIRE HATHAWAY INC | 10%+ Owner | Buy | +5,347,320 | +$267.45M |
| 2020-06-19 | BERKSHIRE HATHAWAY INC | 10%+ Owner | J | +340,221 | +$8.67M |
| 2020-06-09 | BERKSHIRE HATHAWAY INC | 10%+ Owner | X | +7,175,955 | +$182.77M |
| 2020-06-03 | BERKSHIRE HATHAWAY INC | 10%+ Owner | Buy | +450,000 | +$16.81M |
| 2020-05-29 | BERKSHIRE HATHAWAY INC | 10%+ Owner | Buy | +2,374,180 | +$85.82M |
| 2020-05-26 | BERKSHIRE HATHAWAY INC | 10%+ Owner | MIXED | +1,776,950 | +$65.68M |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the FWONA quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.