In my opinion they have to grow their business, find other sources of revenue what ever it takes.
The CEO was complaining himself about the depressed stock price in his conference call arguing that based on his own valuations ZOLT should be a 16 buck stock.
To bad that Wall Street doesn't agree with him and investors are running out of patience.
I'm sure nobody is left from the early investors but this was a 70 bucks stock at the IPO and it hit $ 45 couple of times over the years.
We are way-way off from those levels.