If my arithmetic is right at $400/share the company is with more than a quarter of a billion and Gerry's shares would be worth around a quarter billion.
What would happen if Lenfest decided to buy the float for a dollar or less per share to take TEVE private just before the company showed a profit, then waited a year to sell the whole company for much higher in a private transaction? He's not a billionaire because he's stupid, I'm sure...
There's nothing anyone can do about it unless you want to spend alot of money suing a billionaire. Good luck with that...
The value of a company is not set by what someone pays for shares on a particular day but on the earnings of that company on a sustained basis. As far as I know the TEVE lost money on a full year basis as last reported.
To be valued at a quarter billion dollars, they'd need to have annual after tax earnings of at least $12 million.