My dad had money in stocks before the crash in the early 2000s

My dad was fired from a company that he put $10,000 lf his money in worth of their stocks, after he was fired they wouldn't let him take the money back out (or sell it back idk how it exactly went down I was little). He thought after the crash it was all gone. But that company is still in business and is making millions a year. Would he still be entitled to any of the stocks still?