I scraped every insider trade filed with European regulators — here's who's buying their own stock

The data exists. Nobody aggregates it.

Every CEO, CFO and board member of every listed company in Europe is legally required to disclose their own-company trades within 3 business days. The regulation is called MAR Article 19 — it has been in force since 2014. BaFin publishes the German filings. Finansinspektionen publishes Sweden. The FCA publishes the UK. The data is public, free, and almost entirely ignored by the retail audience it was designed to protect.

Why? Because it sits fragmented across 30+ national regulators, in 6+ languages, in formats ranging from XML feeds to JavaScript-rendered portals that resist scraping. No single source stitches it together.

Until now. I built InsideREU to do exactly that.

What the tool does

InsideREU scrapes every MAR Article 19 filing it can reach, normalises it, and ranks each insider by how well their personal buys actually performed 3 and 12 months later.

The ranking uses Bayesian shrinkage — a statistical technique that prevents a single lucky trade from topping the leaderboard. An insider needs at least 3 buys with verifiable price data before they start climbing. The result is a leaderboard that surfaces the executives who consistently time it right when they buy their own stock.

Three signals worth watching

1. The leaderboard — who actually makes money

Not all insider buying is equal. Some executives buy mechanically as part of compensation plans; others buy because they believe the stock is undervalued. The leaderboard separates signal from noise by measuring actual forward returns. You can browse the full thing for free at /leaderboard.

2. Cluster buys — when the whole board buys at once

When 3 or more executives at the same company independently buy their own stock in the same week, that stops being noise. They all see the same forecasts. They all sit in the same board meetings. They all chose nowto buy. Academic research (Lakonishok & Lee 2001; Jeng, Metrick & Zeckhauser 2003) consistently shows that clustered insider purchases outperform isolated ones. /cluster tracks every one across Europe.

3. Whale crossings — the 5%+ threshold

Under the EU Transparency Directive, any entity crossing a 5% voting rights threshold must disclose. These are activist funds, family offices, sovereign wealth — anyone committing real capital and accepting disclosure obligations to do it. A fund quietly accumulating 5% of a small listed industrial is conviction with a capital C. /whales tracks these crossings.

Coverage today

Day-one sources live: Germany (BaFin) and Sweden (Finansinspektionen), which together account for roughly 30-35% of European listed-equity market cap by value. The UK (LSE RNS) and Euronext markets (France, Netherlands, Belgium, Portugal, Italy, Ireland, Norway) are deployed and warming up. You can check the live status of every source at /coverage.

Free to browse. Alerts if you want them.

Everything is free to browse — the full leaderboard, every cluster signal, every whale crossing. If you want daily email alerts when insiders on your watchlist move, or a curated Monday digest, that is €9/month. No card required to sign up.

Questions, feedback, or want to talk bulk data? Get in touch.