Insiders who reported open-market trades in the last 12 months at the companies Warren E. Buffett files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
Ajit Jain - $19.97M in BRK.A purchases and sales in the last 12 months
Gregory E. Abel - $15.31M in BRK.A purchases and sales in the last 12 months
Charles C. Chang - $1.53M in BRK.A purchases and sales in the last 12 months
Warren E. Buffett is a corporate insider of BERKSHIRE HATHAWAY INC (BRK.A). InsiderAlpha holds 11 primary Form 4 filings for them, the earliest from 2024, updated as new SEC EDGAR filings are processed.
When did Warren E. Buffett last file a Form 4?
The most recent primary Form 4 on record is dated 15 July 2026, one of 11 filings going back to 2024.
Warren E. Buffett files SEC Form 4 reports at BERKSHIRE HATHAWAY INC (BRK.A). 11 SEC Form 4 filings on record going back to 2024, most recently on 15 July 2026.
Recent transactions
20
The latest 20 SEC Form 4 transactions reported by Warren E. Buffett.
InsiderAlpha's records for Warren E. Buffett go back to 2024: 11 primary Form 4 filings, an average of 3.7 per year. No recorded transaction carries a Rule 10b5-1 plan flag. An absent flag does not establish whether a transaction was pre-arranged or discretionary.
