Insider buying clusters
This list shows companies where three or more insiders (officers, directors or major owners) bought shares on the open market within 14 days of each other at some point in the past 90 days, as reported on Form 4, the filing insiders must make after trading their company's stock. It counts purchases only, not sales, and companies enter and leave the list automatically as new filings arrive. It uses the same rule as our insider cluster buys leaderboard.
Companies
Companies where three or more insiders bought shares on the open market within 14 days of each other, over the past 90 days, ranked by the number of insiders buying. Recomputed from new Form 4 filings every day.
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How this list is chosen
Last reviewed Oct 27, 2026.
Companies where three or more insiders bought shares on the open market within 14 days of each other, over the past 90 days, ranked by the number of insiders buying. Recomputed from new Form 4 filings every day.
Change log
- Oct 27, 2026Rule published.
Why people look at this data
What people who follow this kind of filing usually say. Not our view.
- Supporters point out that officers and directors know their own business closely.
- The case usually made is that open-market purchases use personal money, unlike stock awards.
- Supporters note that several different buyers in a short window is less likely to be a one-off.
Limits commonly cited
Why this kind of filing says little on its own. Not our view.
- Critics note that insiders buy for many reasons, including personal ones unrelated to the company's outlook.
- Critics note that clusters can be coincidental, and insiders can be wrong about timing.
- Risks often raised include that Form 4 filings arrive after the trade and say nothing about what happens next.
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Using 13F.ai, which companies on the "Insider buying clusters" list had insider buying or selling, or trades by members of Congress, in the last 90 days? Show the filings.
Using 13F.ai, compare the companies on the "Insider buying clusters" list by federal contracts and lobbying spend over the last 12 months.
Using 13F.ai, which big funds added to or trimmed positions in the companies on the "Insider buying clusters" list in the latest 13F quarter?
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A theme is a list of companies with something in common, chosen under a published rule. It is information, not a recommendation or investment advice. Activity figures come from public filings, each linked on the company's page; none of it predicts what a price will do. Disclaimer.