430 companies where the last 90 days of Form 4 filings showed something worth writing up — a cluster of buyers, buying that broke from the company’s own baseline, discretionary selling worth flagging, or a named insider with a track record. Grouped by what the filings actually showed.
Several different insiders bought in the same short window — the pattern that historically carries the most signal.
Purchase volume well above what this company’s insiders normally do, measured against an 11-month baseline.
Selling that is not scheduled vesting or tax withholding, so it reflects an actual decision.
One identifiable buyer whose past purchases we can score, with the size of the stake they took.
Rebuilt from SEC Form 4 filings twice a week. Cluster buys · How insider signals performed