What Is a 10b5-1 Plan?
10b5-1 plans let insiders schedule trades in advance to avoid trading on non-public information. Here is what that means for how you read insider sales.
A 10b5-1 plan is a written trading plan an insider sets up in advance. It tells the broker exactly when, how many, and at what price to trade shares on the insider’s behalf. The insider gives up day-to-day control once the plan is in place.
Why these plans exist
Insiders have access to information that ordinary investors do not. Trading at the wrong moment, even with good intentions, can look like trading on material non-public information. A 10b5-1 plan defends the insider by setting up trades in advance, while the insider has no inside information, so the trades execute later mechanically. SEC Rule 10b5-1 is the rule that authorizes this defense.
Why this matters when you read insider sales
A scheduled sale executed under a 10b5-1 plan is a different conversation from a discretionary sale. It does not necessarily mean the insider sees a problem at the company. It means the trade was queued up months earlier and triggered by the calendar or a price target.
Form 4 filings often note when a transaction was made under a 10b5-1 plan, usually in a footnote. If you are reading a sale and trying to decide whether it is bearish, that footnote is important context.
The newer rules
In 2023 the SEC tightened the rules. There are now mandatory cooling-off periods between when a plan is adopted and when the first trade can execute. The plan must be entered in good faith. Officers and directors have to certify the plan was set up while they had no material non-public information. These changes were a response to research showing that insiders were sometimes timing plan adoption around non-public news.
When you see “10b5-1” in a footnote, it is shorthand for “this trade was scheduled, not reactive.”