Hoping for a boost…

A regular points to a string of interesting filings by Icos Corp. (ICOS), a company best known for the ED-drug Cialis.

In addition to lots of insider buying at cheap-o prices — sometimes even free — the company filed another exhibit last week that outlined new change-in-control agreements with eight top executives. The stock is up about 20% since the end of June and investors on the Icos message board on Yahoo! (YHOO) are placing bets on when the company will get taken over and how much money they’ll make in the process.