maybe being a Non-Executive Director he may not be in the know...

maybe being a Non-Executive Director he may not be in the know of significant news to come and when it does it will be completley left of field? ... or maybe any news that is significant is in the reports as announced by them so any news to come will relate to what the reports have said, ergo Directors buy up? ... or any news that could be price sensitive in future could be argued as speculative at the moment, ergo Directors buy up? ...