So I received a notice in the mail about a company I own some stock in. I am glad there was a class action lawsuit against the company, because I believe the company made some material misstatements about their business operations which, if I had known, I definitely would not have bought shares in the company.
The notice I received claims I need proof of purchase of shares of the company (I have that) and also either of the following:
* proof of sale of shares
* proof of ownership of shares at a specific date
I did not sell my shares in this company, though certainly I am wishing I had at a certain point in time. I seem to have misplaced some of my brokerage account statements. Must I provide a copy of my brokerage statement from the specified period in the class action lawsuit (February 23, 2009), or would a current brokerage statement suffice? How specific do I need to be with this documentation?
Any help woiuld be greatly appreciated.

