Most Form 4 activity is awards, option exercises, tax withholding, or one-off purchases. This board only counts open-market buys where at least two distinct insiders each bought $10K or more in the last 30 days. Use it as a watchlist for research, not as a standalone buy signal.
Only 50 tickers clear the cluster filter: at least two distinct insiders, each buying at least $10K of stock on the open market in the last 30 days.
10 buyers, 13 purchases and $159.0M disclosed.
Rows sort by distinct buyer count first, then disclosed dollars. The ticker index below is coverage, not a ranking signal.
Open-market Form 4 purchase clusters, last 30 days
Any recent insider transaction type. This is the lookup tail, not the cluster-buy ranking.
Programmatic access: call insider.clusters for the market-wide scan, then insider.company to inspect one ticker. Available through the Arkolith API & MCP server. Public-domain SEC EDGAR Form 4 data, normalized by Arkolith.