trading around the .48-.54 range, a biotech analyst has a mv of 4.00 on the stock, and that was prior to the latest announcement, check 'helmets' message on HC this week
to get a good basic view of the stock I suggest you go to the 'tradingroom' website, quotes and charts, pull up NAL, gives a years trading history, all company announcements etc
or if you are a commsec member do the same on that website
cheers