Horizon Pharma to Acquire Hyperion Therapeutics for $1.1 Billion

Palo Alto – March 31, 2015 – Cooley is advising Horizon Pharma plc on its agreement to acquire Hyperion Therapeutics for $1.1 billion in an all cash transaction and related debt commitments.

Horizon Pharma plc, which is headquartered in Dublin, Ireland, is a specialty biopharmaceutical company focused on improving patients' lives by identifying, developing, acquiring and commercializing differentiated products that address unmet medical needs. The company markets a portfolio of products in arthritis, inflammation and orphan diseases. Hyperion Therapeutics is a commercial-stage biopharmaceutical company committed to developing and delivering life-changing treatments for orphan diseases.

Earlier this month, Cooley advised Horizon Pharma and Horizon Pharma Investments Limited on its Rule 144A offering of $400 million aggregate principal amount of exchangeable senior notes due 2022.

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Barbara Borden  Partner San Diego
Rama Padmanabhan  Partner San Diego
Michael Tollini  Partner Washington, DC, New York
Natasha Leskovsek  Of Counsel Washington, DC
Wade Andrews  Associate San Diego
Jacqueline Grise  Partner Washington, DC
Tanisha A. James  Partner New York, Washington, DC
Amanda Fant  Associate New York
Ben Beerle  Partner San Francisco
Dani Nazemian  Associate San Diego
Todd Gluth  Partner San Diego
Matthew D. Silverman  Special Counsel San Diego