Pádraig Ó Ríordáin

Padraig O Riordain | Corporate Lawyer | Healthcare Law | Arthur Cox


Pádraig is one of Ireland’s leading corporate lawyers and was Managing Partner of Arthur Cox from 2003-2011. He was named European Managing Partner of the Year in 2009 and received the Lifetime Achievement Award from Managing Partners’ Forum in 2012. During his tenure as Managing Partner, Arthur Cox was recognised as European Law Firm of the Year (2006), Best Managed European Law Firm (2007), Best European Corporate Citizen (2007) and has been ranked by the Financial Times as one of the Most Innovative Law Firms in Europe in four of the past five years.

Pádraig was ‘Dealmaker in the Spotlight‘ in the American Lawyer’s January 2011 edition and is rated as the top performing corporate lawyer in Ireland by Chambers and Partners.

Pádraig specialises in regulated sectors, advising a range of public companies, private companies and State-related entities on their strategic, transactional and regulatory issues. He trained in a Wall Street law firm prior to joining Arthur Cox as head of our New York Office, before returning to our Corporate Department in Dublin.

Pádraig is Chairman of Dublin Airport Authority and is a director of Paddy Power plc. He is also a member of the European Commission’s Insolvency Law Expert Group (ILEG), the advisory body to the European Commission on the development of an EU cross-border regulatory crisis management regime and resolution for the banking sector.


Pádraig led the Arthur Cox team which advised CRH plc globally on its 2015 €6.5 billion acquisition of assets from Lafarge S.A. and Holcim Limited. The American Lawyer awarded the transaction the Global M&A Deal of the Year: Europe for 2015.

From 2008 to 2015, Pádraig led the Arthur Cox team which advised the Irish State on the Irish banking crisis. These projects included:

  • assisting in the management of overall State legal regulatory risk;
  • the refinancing arrangements between the Irish State and the IMF, the EFSF and the EFSM;
  • the recapitalisations and equity structuring of Allied Irish Banks, Bank of Ireland and Irish Life & Permanent;
  • legally implementing €5 billion burden sharing with subordinated debt holders through liability management exercises and application for a subordinated liability order;
  • the nationalisation and restructuring of Anglo Irish Bank and Irish Nationwide Building Society;
  • the establishment of the National Asset Management Agency;
  • assisting with the preparation of the Covered Institutions (Financial Support) Act 2008, the Anglo Irish Bank Corporation Act 2009, the National Asset Management Agency Act 2009, and the Credit Institutions (Stabilisation) Act 2010.

Pádraig has advised on the initial public offerings of Paddy Power plc, eircom plc and TVC Holdings, plc. as well as on the €1.2 billion rights issue of CRH plc, the largest undertaken by an Irish company.

  • LLM, 1990, Harvard Law School
  • LLM, 1989, University College Cork
  • BL, 1988, Honourable Society of King's Inns
  • BCL, 1986, University College Cork
  • Chairman of Dublin Airport Authority plc
  • Director of Paddy Power plc
  • Member of the European Commission’s Insolvency Law Expert Group (ILEG)
  • Chairman of the Editorial Board of the European Lawyer
  • Admitted, Law Society of Ireland, 2000
  • Admitted, New York Bar, 1991
  • Admitted, Bar of Ireland, 1988
  • Institute of Directors
  • Association of the Bar of the City of New York
  • The American Bar Association
  • The International Bar Association
  • The Harvard Law School Association