I don't believe so. Rights as shareholders would be an obvious thing to address in the RSA. Claims would be for additional damages, litigation, to prove malfeasance or some such. Which would be a standard strategy considering the usual low likelihood of commons receiving any kind of recovery.
I called Epiq's hotline. Recording says shareholders aren't expected to get any recovery. But I believe that's a pretty standard disclaimer. I didn't wait to talk to a representative. I may try again when I have more time.