re: sellers disappearing Trading during the last session in...

re: sellers disappearing Trading during the last session in London on Thursday was most encouraging; perhaps this frustrating stock will soon reward those who have been patient.
But as always with PBI, there are the questions which will probably remain unanswerable to the common folk like us.
Where did these parcels of over 1 million shares come from? According to ASX , only 5 companies/ individuals have shareholdings of more than 1 million shares.
Where have the blocks of shares traded in London gone to?
We never found out who had bought/sold the other large parcels traded in London a few weeks ago. Will last Thursday's sales also remain secret?