As a rig worker he should know that he can't say anything, and as a shareholder everyone should know that if he messes up and does talk they could face jail time for acting on that information.
Ask yourself this... if you contact him and he sings like a bird, can you *not* act on that info? In most cases, if you're honest with yourself, you have to admit that you *would* act on it.
Now ask yourself. Is it worth going to jail for?