Horizon Pharma plc to acquire co for $46/shr cash in $1.1B deal; deal to be immed accretive - Horizon Pharma plc (NASDAQ: HZNP) and Hyperion Therapeutics, Inc. (NASDAQ: HPTX) today announced they have entered into a definitive agreement under which Horizon Pharma will acquire all of the issued and outstanding shares of Hyperion's common stock for $46.00 per share in cash or approximately $1.1 billion on a fully diluted basis. The per share consideration represents a premium of approximately 35 percent to Hyperion's volume weighted average price for the trailing 60-days. The proposed transaction has been unanimously approved by both companies' boards of directors.