Ooooh hell yeah!!
I know very little about the corporate world, but I do know one thing, you never, ever fuck with the SEC and if they're ever looking into you, you're fucked.
As far as I'm aware though, disclosures about potential lawsuits as required by GAAP should have required Activision Blizzard to at the very least disclose the investigation, so there is a legitimate question as to who in Activision Blizzard was not ensuring that such information was included and why. If there isn't a legitimate reason as to why they refused to disclose it, there are going to be some hefty fines being paid