August 2025 · Ongoing
CEO insider trading tracker
An automated pipeline that pulls SEC Form 4 filings, isolates CEO transactions, and surfaces unusual activity.
What it does
Watches SEC Form 4 filings, filters to chief executive transactions, and flags purchases that are unusual relative to that executive’s own history.
Why
Open-market CEO purchases are one of the few insider signals with a reasonable literature behind them. Most public trackers report raw volume, which is dominated by scheduled sales under 10b5-1 plans.
Live signals
The pipeline’s output is published on the signals page — a live, automatically updated paper book of ranked insider purchases.