Wait, how are 401ks part of a bankruptcy? I guess the matching portion?

Edit: from my quick research, it appears 401ks are completely protected in a bankruptcy. The only thing would be if the company had not yet sent your contribution to the servicer, then that payment would be considered another creditor. But if the money is in your 401k account at your servicer, the money is protected from any bankruptcy.

I worked for a company that went bankrupt. They ended up taking several thousand dollars out of my account to cover IIRC unpaid fees to the provider.