Data from public SEC Form 4 filings. For information only, not investment advice. Created by Caleb Love.

Methodology

Source: every new Form 4 on SEC EDGAR, scanned every 10 minutes by our Worker under SEC fair-access rules (declared User-Agent, <10 req/s).
Only non-derivative transactions with code P (open-market or private purchase) count. Awards, option exercises, tax withholding and gifts are excluded.
Grouped by issuer over the look-back window; a cluster buy = 2+ distinct buyers. Transactions are deduped by filing and row, all reporting owners on one filing count as one buyer, and separate filings that report the identical holding (joint filers such as a fund, its manager and its partners) are merged into one buyer.
A buyer only counts toward a cluster if their open-market purchases in the window total at least $10,000. Large broker-dealer and bank filers (for example Bank of America, JPMorgan, Goldman Sachs, Morgan Stanley, Citigroup, Wells Fargo, UBS and Barclays) are not counted as buyers, though their filings still appear in the list.
Coverage starts when the scanner was deployed and rolls up to 30 days.
Known limits: amended filings and parsing errors. Always read the filing.

Developers: REST API on RapidAPI · Apify actor · free MCP endpoint https://sec-edgar-api.kidriahx.workers.dev/mcp.

Data: U.S. SEC EDGAR Form 4 filings (public domain), open-market non-derivative purchases (code P) only, parsed automatically by MonRiah Studio. Pages are generated by software from those filings; summaries are computed from the numbers, not written by a person. Not affiliated with the SEC. Not investment advice; insider buying is one data point, filings can be amended, and parsing can be wrong; always check the linked filing.