There's no requirement for information to be "publicly known" to trade on it. You have to be an "insider" for it to be insider trading - ie, there has to be so

There's no requirement for information to be "publicly known" to trade on it. You have to be an "insider" for it to be insider trading - ie, there has to be some relationship of trust (eg an employee or officer, or in some circumstances people they "tip off").