When a company's own executives buy or sell shares, they have to report it to the SEC within two business days using a form called Form 4. Watching those filings is one way retail investors spot conviction moves before the broader market catches on.
The problem is that thousands of Form 4 filings drop every week. Sorting through them manually is tedious and easy to miss.
What Are Insider Filings and Why Do They Matter?
"Insider trading" sounds illegal, but most of it is perfectly legal. Corporate insiders (CEOs, CFOs, board members, and large shareholders) can buy and sell stock in their own company as long as they follow SEC rules and report it on time.
The filing that records these transactions is called Form 4. It goes public on the SEC's EDGAR database, usually within 48 hours of the trade.
Retail investors pay attention to these filings because:
- A CEO buying a large chunk of their own stock can signal confidence in the business.
- A wave of executives selling at the same time can be worth noting.
- Cluster buying (multiple insiders buying around the same time) is often seen as a stronger signal than one person buying alone.
None of this guarantees anything about price movement, and this post is general information only, not financial advice.
The Real Problem: Volume and Noise
On any given week, there are hundreds or thousands of Form 4 filings. A lot of them are routine: automatic plan sales (called 10b5-1 plans), small option exercises, or transfers between accounts that mean very little.
If you want to focus on meaningful moves, you need to filter for things like:
- Open market purchases (the insider spent their own cash, not exercising options)
- Large transaction sizes relative to what the insider already owns
- Multiple insiders buying within a short window
- Filings on companies you actually follow
That is a lot of manual work if you are doing it by hand every day.
A Smarter Way to Follow Insider Filings
Instead of checking EDGAR or finance sites every morning, you can set up an automated brief that pulls the relevant filings for you.
AIDular lets you describe exactly what you want to track in plain English, then emails you a sourced report on whatever schedule you pick. You do not need to know how to code or set up any data feeds.
Here is an example prompt you can copy and paste into AIDular:
"Every weekday morning at 7am, search for new SEC Form 4 insider buying filings from the past 24 hours. Focus on open market purchases (not option exercises or 10b5-1 plan sales) where the transaction value is over $100,000. Highlight any cluster buying where more than one insider at the same company bought within 3 days of each other. Include the company name, insider role, dollar amount, and a link to the source."
You set the schedule, and AIDular handles the searching and summarising. The report lands in your inbox before the market opens.
What to Do With the Information
Getting a daily insider filing brief gives you a starting point for your own research, not a buy list.
A few things worth doing when you see an interesting filing:
- Check if the insider has a history of well-timed purchases or if this is unusual for them.
- Look at what percentage of their total holdings the purchase represents. A $200,000 buy from someone who already owns $50 million in stock is different from someone doubling their position.
- Cross-reference with recent earnings, news, or analyst notes to get more context.
Sites like the SEC's own EDGAR, OpenInsider, and Finviz can help you dig deeper once you have a name to look into.
Keeping It Manageable
You do not need to follow every company on the market. You can narrow your AIDular prompt to just the sectors or tickers you already care about. That keeps the daily report short, relevant, and actually useful rather than overwhelming.
The Lite plan at aidular.com is free, so you can try building an insider filings brief without spending anything.
Staying informed does not have to mean spending your mornings glued to a screen. A focused, scheduled report gets you the signal without the noise.