Loan made a really good point. The point wasn't that they must disclose this information because of the investigation, but rather because a shareholder (RME) knew of the investigation.
Loan, they why doesn't the same rule apply to the OS and other material events?
I beg to differ. Please read the link provided and see if you still disagree. The Electronic Code of Federal Regulations is in existence so that we don't have to "call the sec and ask them." If you would like to call them, please include the fact that some shareholders were aware of the investigation in your question.