Offer your thoughts or opinion on the input financial query or topic using your financial background.

Buying shares in a company after you quit
US law dictates that you cannot buy / sell shares in a company you   work for except during open trading windows. I understand lockout   periods when you're in a company but what about after you quit? There's no such law. Trading lockouts are imposed by companies themselves to avoid the complexities of identifying "insiders". For large companies it sometimes is easier/cheaper to assume everyone is insider instead of imposing internal data flow controls and limitations. For such companies, their internal policies would also manage how the employees who are leaving should be treated.