Alan Casey is a partner based in our Dublin office. Alan was previously Head of the firm's New York office for a number of years. He is a member of the firm's Corporate and M&A practice and advises leading Irish and multi-national public and private companies across a broad range of Mergers & Acquisitions, Governance and Equity Capital Markets issues. Alan has advised on many of the largest corporate transactions in Irish history, was shortlisted for Transatlantic Dealmaker of the Year 2017, and is listed as a Leading Lawyer in both M&A and Equity Capital Markets by several publications including IFLR1000, Chambers Global and Legal 500.
Areas of Expertise
Corporate and M&A/Corporate Governance & Compliance/Investing in Ireland/Capital Markets – Equity/Commercial Contracts/Finance/Brexit
Experience Advising:
- Morgan Stanley, as AbbVie's lead financial advisor and lender, in connection with AbbVie's proposed $63bn acquisition of Allergan.
- Osmotica Pharmaceuticals on its migration from Luxembourg and IPO on NASDAQ.
- Iterum Therapeutics plc on its IPO on NASDAQ
- Adient plc on various matters including its $5bn spin-off from Johnson Controls plc.
- Johnson Controls Inc. on its $20bn merger with Tyco plc.
- Pfizer on its proposed $160bn merger with Allergan plc.
- Perrigo Company plc on various matters including its successful defence of the $27bn hostile offer by Mylan N.V., its $2.7bn sale of Tysabri to Royalty Pharma.
- Medtronic Inc. on its $49bn acquisition of Covidien plc.
- Prothena Corporation plc on various matters including its spin-off from elan and several NASDAQ equity raises totalling over $400m.
- Endo International plc on various matters including its $2.6bn acquisition of Auxilium Pharmaceuticals and its $1.6bn acquisition of Paladin Labs.
- élan on Perrigo Company's recommended $8.6bn takeover offer, its successful defence of the hostile $6.7bn offer by Royalty Pharma, the $1bn merger of its Elan Drug Technologies business with Alkermes Inc and Johnson & Johnson’s US$885mn equity investment in élan and related $500mn investment in élan's Alzheimers Immunotherapy Programme.
- Eaton Corporation on its $13bn offer for Cooper Industries plc.
- Ryanair in its acquisition of a 29% stake in Aer Lingus and its multiple takeover offers.
- Various Investment Banks as Underwriters, Lead Global Arrangers etc on numerous equity capital markets transactions.
Market Recommendations
"Very practical adviser who provides solutions." (Chambers Global 2018)
"Shortlisted for Transatlantic Dealmaker of the Year 2017." (American Lawyer Transatlantic Legal Awards 2017)
"Highly regarded lawyer." (IFLR1000 2020)
"Noted as a leading lawyer for his expertise on advising US companies on investments into Ireland." (Chambers Global 2017)
Professional activities
Alan is a member of the Law Society of Ireland and the American Bar Association and is a contributor to many publications on private and public company M&A and securities laws.
Education
- Solicitor, Law Society of Ireland
- BCL, University College Dublin

Alan Casey
Partner, Corporate and M&A
Dublin