Is Insider Trading Illegal?
By InsiderAlpha · Published
Written from SEC primary filings, with every rule cited inline. Editorial standards.
The phrase "insider trading" covers two very different things. The kind in headlines - trading on confidential information - is a federal crime. But the everyday kind, corporate executives buying and selling their own company's shares, is perfectly legal, tightly regulated, and publicly disclosed. That disclosure is exactly the dataset InsiderAlpha tracks.
Legal insider trading
Directors, officers, and large shareholders may trade their company's stock provided they:
- are not in possession of material non-public information (MNPI) at the time of the trade, or trade under a pre-arranged Rule 10b5-1 plan adopted while clean;
- report the trade on Form 4 within two business days;
- respect company blackout windows and the short-swing profit rule, which forces disgorgement of profits from round-trips inside six months.
Illegal insider trading
Trading becomes illegal under Rule 10b-5 when someone buys or sells on the basis of MNPI in breach of a duty - an executive front-running an earnings miss, a lawyer trading on a deal they're papering, or anyone trading on a tip they know came from such a breach ("tippee" liability). The SEC brings civil cases (disgorgement, penalties, officer bans) and the DOJ prosecutes criminal ones, with sentences that have reached double-digit years. Notably, the information need not come from inside the company - misappropriating confidential information from any source (an employer, a client, even a spouse) can qualify.
Why the legal kind is worth following
Because legal insider trades are disclosed within two days, they form one of the cleanest public datasets on what informed capital is doing. Decades of academic work show open-market insider purchases predict positive abnormal returns on average (see are insider buys bullish?) - the insiders aren't breaking the law; they simply understand their business better than the market does. Watch what they're buying right now on the recent buys feed.
This article is informational and is not legal or investment advice.