Different company, Different CEO and Different story. The last time I looked, CEO of PEGA owns 51% of the common stock. IF and when Mr T wants to sell it will be for a pretty penny. Until then, buy not for take-overs, but as a revenue growth software and services company.
If Pega is sold, whoever buys it will have to pay an arm and a leg. Trefler owns too much stock, and as long as the company keeps growing revenues like it is there is literally no value proposition for him to sell unless it's a stupid amount.