Well, they could always file it earlier - seen it happen many times in biotech stocks. They just threw that date out there as a worst case scenario. Bet they file early and get it approved 6 to 10 months before the date already out there, if they are not bought out before then. You don't have to have an approval or go that far down the timeline for a Pfizer to step up and bid. Pfizer at 52 wk high with loads of cash - don't be surprised!
no one gets bought out before FDA approval. That would be a massive gamble. WHat if FDA denies it? The buying company would be pi$$ed... so yeah, no buyout before any FDA approval which is 2+ years away.