Per this mornings conference call, the ceo stated that there are no missing sec documents, that the issue is a complete fabrication by Pearson. In fact, it was stated that management plans to make significant open market purchases in the "coming days" and that those filings reflecting the purchases will be available very soon.
Having just listened to the entire conference call, the question and answer session immediately following, as well as having read several of the most recent 10-K's... It is mho that the company is totally legitimate and that they have suffered compensable damages from Pearson and his associates.