If they sell 5.8 million shares at $17.30 (they won't the price will crater with that much supply added), the percentage will fall to 68%-ish. I'd count on it falling to 65% or less.
As I stated long ago, the percentage ownership will just keep fading and dropping and George will get richer and shareholders will get less. It's the way it's been for five years now almost. October 2007 is when his mind imploded. The process began with the LACK of shares being sold as part of a 6,000,000 share ATM with prices over $100 per share. Imagine, then he could have sold 1 million shares of DRYS and raised the $100 million he needs now. That many often trade in the first minute of the day now.