BUFFETT WARREN E (CIK 315090) reported 53 SEC Form 4 insider transactions across 5 companies over the past 18 months (most recent 2026-08-04). Recent activity: Sell DVA (182,980 shares), Buy BRK.A (12.0M shares), Sell BRK.A (9.0M shares), Sell BRK.A (1.0M shares), Sell BRK.A (1.0M shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-04 | DAVITA INC. (DVA) | 10% Owner | Sell | 182,980 | $36.5M |
| 2026-07-15 | BERKSHIRE HATHAWAY INC (BRK.A) | Director | Buy | 12.0M | $0 |
| 2026-07-15 | BERKSHIRE HATHAWAY INC (BRK.A) | Director | Sell | 9.0M | $0 |
| 2026-07-15 | BERKSHIRE HATHAWAY INC (BRK.A) | Director | Sell | 1.0M | $0 |
| 2026-07-15 | BERKSHIRE HATHAWAY INC (BRK.A) | Director | Sell | 1.0M | $0 |
| 2026-07-15 | BERKSHIRE HATHAWAY INC (BRK.A) | Director | Sell | 1.0M | $0 |
| 2026-05-26 | BERKSHIRE HATHAWAY INC (BRK.A) | Director | Sell | 160 | $0 |
| 2026-05-20 | BERKSHIRE HATHAWAY INC (BRK.A) | Director | Buy | 37,500 | $0 |
| 2026-05-20 | BERKSHIRE HATHAWAY INC (BRK.A) | Director | Sell | 18,646 | $0 |
| 2026-05-20 | BERKSHIRE HATHAWAY INC (BRK.A) | Director | Sell | 18,646 | $0 |
| 2026-05-05 | DAVITA INC. (DVA) | 10% Owner | Sell | 1.2M | $182.9M |
| 2026-02-17 | Liberty Live Holdings, Inc. (LLYVA/K) | Insider | Sell | 44,100 | $3.6M |
| 2026-02-17 | Liberty Live Holdings, Inc. (LLYVA/K) | Insider | Sell | 20,226 | $1.7M |
| 2026-02-17 | Liberty Live Holdings, Inc. (LLYVA/K) | Insider | Sell | 65,071 | $5.4M |
| 2026-02-17 | Liberty Live Holdings, Inc. (LLYVA/K) | Insider | Sell | 18,689 | $1.5M |
| 2026-02-17 | Liberty Live Holdings, Inc. (LLYVA/K) | Insider | Sell | 66,568 | $5.5M |
| 2026-02-17 | Liberty Live Holdings, Inc. (LLYVA/K) | Insider | Sell | 30,643 | $2.5M |
| 2026-02-17 | Liberty Live Holdings, Inc. (LLYVA/K) | Insider | Sell | 59,411 | $5.0M |
| 2026-02-17 | Liberty Live Holdings, Inc. (LLYVA/K) | Insider | Sell | 18,125 | $1.5M |
| 2026-02-17 | Liberty Live Holdings, Inc. (LLYVA/K) | Insider | Sell | 7,685 | $643,388 |
| 2026-02-02 | DAVITA INC. (DVA) | Insider | Sell | 1.7M | $199.9M |
| 2025-11-12 | BERKSHIRE HATHAWAY INC (BRK.A) | Chairman and CEO | Buy | 2.7M | $0 |
| 2025-11-12 | BERKSHIRE HATHAWAY INC (BRK.A) | Chairman and CEO | Sell | 1.5M | $0 |
| 2025-11-12 | BERKSHIRE HATHAWAY INC (BRK.A) | Chairman and CEO | Sell | 400,000 | $0 |
| 2025-11-12 | BERKSHIRE HATHAWAY INC (BRK.A) | Chairman and CEO | Sell | 400,000 | $0 |
Source: SEC Form 4 filings · as of 2026-08-04