This is what E&O insurance is for. Insurance company will defend and settle. Class members will get a $5 gift card to Applebee's. And the lawyers will get 1/3 of the settlement in fees, probably a few million bucks.
That's a very common thing and nothing comes out of these lawsuits. Heck, sometimes the CEOs and boards get sued when stock underperforms drastically and it is rare-to-none that any lawsuits gets stockholders any $