Yes. The class members in the Washington Federal case are everyone who owned either common or (junior) preferred shares as of September 5 2008. It is spelled out in the complaint, and nobody else is included.
The Wazee case was filed as a class action, and seeks damages for
and similarly for Freddie. If Sweeney ever actually enters a judgment (a near impossibility in my opinion, I think all the cases will get settled), it looks like both current shareholders and people who held shares on the date of the NWS (but sold since then) would participate in the award.
I don't think Sweeney has certified any classes yet, and here is what a source I trust had to say on the matter:
If Sweeney's cases are settled before she certifies any classes, then the government only has to negotiate with (and potentially pay off) the named plaintiffs.