I don't get it. Over months I get official papers from the bank...

I don't get it. Over months I get official papers from the bank that the take over bid will be for 0,73 audollar. For example a letter of 5 oktober 2010 the bid will be 0,70 audollar. Then the letter of 20 december 2010 ..the bid will be 0,73 audollar. So I think I am smart by selling on the market for 0,745 au dollar in the early january days. But I am amazed to see the shareprice now at 0,80 audollar. What kind of take-over is this? I am not crying because I might have lost some extra rendement (difference between 0,80 and 0,745 ) but it doesn't seem right with al the insinuations that were made about the take over. (When the bank tells me that the takeover price will be 0,73 ...I tend to believe this to be the maximum.) Maybe someone can explain this to me or am I missing some information????