What are insider transactions in a company?
Updated on August 24, 2026 · by Alex
These are the stock purchases and sales made by the people inside a company: directors, senior executives and large shareholders. By law they have to disclose them publicly, and that information is available to anyone.
There is a basic asymmetry between buying and selling, and understanding it is half the job.
Selling has a thousand innocent reasons: buying a house, paying a tax bill, diversifying a net worth that sits almost entirely in one company, or simply an automatic selling plan scheduled a year in advance. One isolated sale by an executive tells you almost nothing.
Buying essentially has one: they think the stock is going up. Nobody puts their own money into the company they already work for, concentrating their risk even further, unless they are convinced.
It is one of the few pieces of data where someone with legitimate inside knowledge — they know the business from within — is putting their own money on the line. It is not a recommendation, but it is an opinion backed by cash.
The pattern most worth watching is cluster buying: several executives buying in the same window, with no news to explain it. That is harder to write off as coincidence than a single purchase.
Panicking at every sale. A large share of executive pay is handed out in stock; selling some of it is just cashing a paycheck. Headlines along the lines of "the CEO sold millions in shares" almost always leave that detail out.
The second mistake is the reporting lag. Transactions are disclosed days after the fact, so by the time you see one the market has already digested it. It works as context on internal confidence, not as an entry signal.
