Why do you think insiders are buying?
The company is billions in negative equity, the bonds trade at less than 5 cents on the dollar, and there is a ton of preferred other convertibles. Even the latest Q seemed to raise the possibility that even the debt wouldn't be paid, which would have to be paid before the preferred, let alone the common get anything in a BK? Wouldn't they buy the bonds or pfd stock instead?
I just don't see how this will get any value other than speculative bumps, but if you see something that isn't apparent, I'd love to hear it. Good luck, it would be nice to see a phoenix rise from the ashes, but I don't think common stockholders will benefit.