Tracefour turns public SEC EDGAR filings into a single, readable picture of who is buying and selling inside America's listed companies.

Every Form 4 — the disclosure each director, officer, and 10%+ owner files when they trade their own company's stock — is pulled hourly straight from EDGAR, parsed, deduplicated, split-adjusted, and laid out as an interactive treemap. Cell color shows direction (buys green, sells red), intensity shows conviction in dollars, and size is an impact composite that combines transaction value, materiality vs. shares outstanding, and how many distinct insiders are involved. One look tells you where insider money is actually moving this week.

### What you get

• The Insider Map — a treemap heatmap of the last 7 / 30 / 90 days of buying and selling, grouped by sector, click-through to any ticker.
• /today — every transaction filed today with a price chart, role badges, and filter chips for buys, sells, clusters, and big trades.
• /clusters — tickers where 3+ insiders bought inside a short window, scored 0–100 for conviction.
• /streaks — companies on consecutive-week insider-buying runs, with track-record performance.
• /congress — STOCK Act disclosures from U.S. Senators and Representatives, cross-linked with corporate insider activity on the same tickers.
• Per-ticker and per-insider pages — full filing history with summary cards, value totals, and links back to the source filing on EDGAR.

### How it's built

• Fully static site, regenerated hourly — pages load instantly, no accounts, no paywall.
• Data sources: SEC EDGAR (Form 4) and Financial Modeling Prep (Congress STOCK Act).
• 365-day rolling window of transactions; identity tables preserve URLs forever.

Data is sourced from public SEC EDGAR filings. Tracefour displays public record — it is not investment advice and does not produce trading signals or recommendations.