Jazz Pharmaceuticals will buy Actio Biosciences for $820 million upfront and up to $500 million more if certain milestones are met for its ultra-rare epilepsy drug.

Actio Biosciences, which will receive $820 million up front in the deal, adds to a major upswing in private biotech buyouts seen throughout this year.

Jazz Pharmaceuticals will buy Actio Biosciences for $820 million upfront and up to $500 million more if certain milestones are met for its ultra-rare epilepsy drug.