By quitting.
If you start out with the right roommate in college and are not particularly brilliant yourself but are carried along anyway by association, due in part if not in the most part to loyalty of the one who really is brilliant, just straight up loyalty, carried along way beyond your abilities as the company grows despite your presence and in no case due to it, but because you own so much of the company stock it occurs when you finally do quit the entire global organization breathes a sigh of relief and the stock you hold increases in value phenomenally. Because you're gone.
Steve Ballmer quits Microsoft and instantly gets a billion bucks.