Reporting owner · CIK 0000315090
Buffett Warren E
Visual SEC Form 4 history across 9 companies, 63 transactions and 11 filings.
10%LENNAR CORP /NEW/
Open-market mix
53%buys
Open-market buy performance
90-day forward return on this insider's open-market purchases
Forward return is not available yet
We compute this from each buy's stock performance 90 days after the transaction. The price history is still being populated for some of their open-market buys, so the average and median will appear here once the daily price refresh has covered the relevant trading days.
Monthly open-market activity
Reported purchase and sale transaction counts
Buys Sells
Net value flow
Buys minus sells
Jan 24
$82.1M
Dec 24
$332K
Jan 25
$40.7M
Feb 25
−$95M
Jan 26
−$227.3M
Mar 26
$0
Sep 26
$212.4M
Transaction texture
Ownership and ticket size
Average P/S size$12.3M
Median P/S size$5.3M
Direct1
Indirect62
Sep 21, 2026buy
Filing-only signals
Deterministic matches in this insider's history
Latest Form 4 facts
Quick context from source filings
Associated companies
Visual map of known reporting history
LEN, LEN.BLENNAR CORP /NEW/16 transactions · latest Sep 22, 2026, 01:31 AMBRK.ABERKSHIRE HATHAWAY INC1 transactions · latest Mar 19, 2026, 12:00 AMDVADAVITA INC.20 transactions · latest Feb 02, 2026, 12:00 AMOXYOCCIDENTAL PETROLEUM CORP /DE/1 transactions · latest Feb 12, 2025, 01:35 AMSIRISIRIUS XM HOLDINGS INC.4 transactions · latest Feb 04, 2025, 12:27 AMVRSNVERISIGN INC/CA4 transactions · latest Jan 04, 2025, 01:27 AMLSXMKLIBERTY MEDIA LLC4 transactions · latest Jan 04, 2024, 09:32 PMLSXMALIBERTY MEDIA LLC4 transactions · latest Jan 04, 2024, 09:26 PM
Latest insider transactions
Form 4 filings from available history. Click any column to sort; click it again to flip the order.
| ID | Ticker | Insider | Role | Type | Shares | Value | Code | Filed | Trans date |
|---|---|---|---|---|---|---|---|---|---|
| #227237 | LEN, LEN.B | Buffett Warren E | 10% | buy | 7.90k | $62.3M | P | 09/22 | 09/18 |
| #227236 | LEN, LEN.B | Buffett Warren E | 10% | buy | 68.7k | $536M | P | 09/22 | 09/18 |
| #227235 | LEN, LEN.B | Buffett Warren E | 10% | buy | 51.5k | $397M | P | 09/22 | 09/18 |
| #227234 | LEN, LEN.B | Buffett Warren E | 10% | buy | 1.21M | $9.30B | P | 09/22 | 09/18 |
| #227233 | LEN, LEN.B | Buffett Warren E | 10% | buy | 410k | $3.25B | P | 09/22 | 09/17 |
| #227232 | LEN, LEN.B | Buffett Warren E | 10% | buy | 267k | $2.09B | P | 09/22 | 09/17 |
| #86586 | BRK.A | Buffett Warren E | CHAIR | gift | 2 | — | G | 03/19 | 03/17 |
| #86528 | — | Buffett Warren E | 10% | sale | 7.68k | -$64.3M | S | 02/17 | 01/16 |
| #86527 | — | Buffett Warren E | 10% | sale | 18.1k | -$152M | S | 02/17 | 01/15 |
| #86526 | — | Buffett Warren E | 10% | sale | 59.4k | -$497M | S | 02/17 | 01/14 |
Buffett Warren E Insider Activity FAQ
SEC Form 4 context
Who is Buffett Warren E?
Buffett Warren E is a reporting owner in SEC Form 4 filings with reporting owner CIK 0000315090.
Which companies has Buffett Warren E reported transactions for?
LENNAR CORP /NEW/, BERKSHIRE HATHAWAY INC, Liberty Live Holdings, Inc., DAVITA INC., OCCIDENTAL PETROLEUM CORP /DE/, SIRIUS XM HOLDINGS INC., VERISIGN INC/CA, LIBERTY MEDIA LLC, LIBERTY MEDIA LLC
When was Buffett Warren E's latest insider buy?
buy at LENNAR CORP /NEW/ on Sep 21, 2026 valued at $1,390,347.
When was Buffett Warren E's latest insider sale?
sale at DAVITA INC. on Jan 29, 2026 valued at $199,939,881.
Where can I see the original SEC filings?
Each transaction row links directly to the source SEC filing so the reported Form 4 details can be reviewed.
Are performance metrics included?
This version does not calculate win rates, forward returns, benchmark-adjusted returns, or high-conviction scores.