My Poet says: "I dont believe it was PC dumping. You cannot be an insider today, resign and cease to be an insider tomorrow. You are still an insider for 90 days as you still posess insider knowledge and you are subject to filing your transactions within 5 days."

This is not correct. Once someone is designated as no longer an insider on SEDI, there is no further requirement to file any transactions. PC was no longer considered an insider as of May 1st, 2016. There is no doubt in my mind it is PC who is selling to exercise his millions of cheap cheap options before the SP goes higher and increases his tax bill.

There is absolutely no requirement for a former insider to file transactions.

This does not exclude possible investigation of trading by any person, former insider or not, where they may have traded advantageously using non-public information. That is distinct from insider reporting requirements. There are no reporting requirements for former insiders.