Sisäpiiriläinen
Sisäpiiriläinen is a Finnish term that translates to "insider" or "insider trader" in English. It refers to an individual who possesses or has access to non-public, material information about a publicly traded company. This information is considered "inside" because it has not yet been disseminated to the general public and could, if known, significantly influence an investor's decision to buy or sell the company's stock.
The concept of a sisäpiiriläinen is closely tied to insider trading regulations. Laws in most jurisdictions
The act of trading on this inside information for personal profit is illegal and carries severe penalties,