Chapter 11 – what happens to my stocks?

I’ve got some Party City stocks but they recently filed for chapter 11.

It’s not much, so I’m holding in case they bounce back, but I’m wondering what could be the repercussions of doing so?

Could debtors hunt down shareholders like me to get paid? (Ye maybe a stupid question but that’s why I’m asking it).

I’m in EU if that makes any difference.