I mean, if you make decisions that affect the corporations profits directly, give a benefit to one company over another and then increase your holdings in one company or another before the benefits are announced to everyone else... you're a person who runs the corporation, and never has to be on the board. You make profits from the shift in the stock market, and you can even go long if you think you'll have even more positive changes to make for that corporations benefit.

If you're confused ask Nanci and Paul Pelosi, they've the epitomal example.