Steve has 10 million shares of restricted stock...they vest this month and are worth about $620 million. He also has options on another 120,000 shares that he can purchase for $18.65...another $5 million...chump change.
The buyout has only been announced. It will not happen until later this year, which means it has no effect on Steve's current rank. It will play a role in his rank next year.
Your statement is true, but the post he was correcting is not. It is either "150% of" or "50% more," but not "Increasing your net worth 150%," which is what Oryan's post said.