Other than selling it right now, if the company files for 13 does the stock become worthless or is that only if it files for Chapter 7?
Chapter 13 is for individuals. Companies have to file Chapter 7 or 11. Either way in Chapter 7 or 11 there is usually no equity left. Debtholders get everything and common shareholdes being the last ones to get paid off usually end up with nothing. In Chapter 11 the stock is usually canceled and new stock issued which shareholders have to buy again. In Chapter 7 the company is liquidated.