Because they were "happy" sellers at a price 11 cents above the 4pm close on 6/17.
Let's say you have a position and you are not in love with the stock. Some trader calls you late Friday and says, "we are a buyer of ECU in the after-market at C$.95.
Believe me, many would be happy to offer their stock at that price., and that is the price requited to accumulate (cross) 8 million shares. It is literally a "free lunch" for the sellers.
Silverbull50