He is probably just maintaining his 25% stake in the company. With the convertible, warrants and interest being paid in stock......he needs to keep buying from time to time. If he wanted to buy the company out.....I imagine he would have made that move a year ago. A year ago with a higher price, a $6 offer would have been a 25% to 50% premium over the $4 to $5 range it played in vs today paying $5 for more shares. Either way he pays $300M (or an additional $225M) for entire company. But he is an unknown, so I doubt he is in the buyout and run it game.