I don't believe in a buyout since Linda has such a big stake in the company. She doesn't want to sell her "magnus opus" to a company without bringing it to a good end first (read commercializing dcvax-L, dcvax-prostate/ovarian and dcvax-direct).
We are Lucky with that, because if the vaccines work (in more/equal to at least 50% of all patients) than it will be worth an ONXX price (+ $100/share)