John Ryan

Head of US Offices

New York

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John Ryan is "knowledgeable, technical, responsive and approachable".

Chambers Global


John Ryan is head of the firm’s US offices and practises corporate tax focusing principally on advising foreign corporations doing business in and from Ireland. His areas of expertise include advising on corporate acquisitions, mergers, reorganisations, inward investment tax incentives, workouts and cross-border restructurings.

He has represented numerous US and other foreign corporations in establishing their Irish operations, and is standing advisor to a number of Irish based multinationals across a range of industry sectors. He has extensive experience in advising on transfer pricing and Irish competent authority proceedings. John has also held a number of directorships on the boards of Irish subsidiaries of multinational groups.

John is a frequent speaker on taxation law topics such as planning for corporate acquisitions and mergers, inbound investment under Ireland’s corporate tax regime and the taxation issues for business relating to the exploitation of intellectual property in and through Ireland.

John is also the Irish correspondent for the Irish Chapter of Tax Management Portfolio - Business Operations in Ireland, a US publication that has widespread circulation both within and outside the US.

Experience Highlights

John most recently has advised:

  • Eaton Corporation (NYSE) on its $11.8 billion acquisition of Cooper Industries and redomestication to Ireland
  • Actavis Inc (NYSE) on its $8.5 billion acquisition of Warner Chilcott and redomestication to Ireland
  • An Irish headquartered logistics company on its US$400 million acquisition of an Atlanta based logistics group and more recently on its subsequent high yield bond issue
  • Royalty Pharma on its $6.5 billion hostile bid for Elan Corporation (NYSE:ISE)

Corporate Tax Expert
Who's Who Legal 2017

The "outstanding" John Ryan is head of Matheson's US offices and is a seasoned tax practitioner highly sought after for his advice to US and other foreign corporations on doing business in and through Ireland.
Chambers Global 2017

One admiring source says of John Ryan: "He provides thorough analysis of complex questions and he approaches things in a creative, holistic way to try to get a better answer".
Chambers Global 2017

"John Ryan is outstanding."
Chambers Europe 2016

John Ryan "provides thorough analysis of complex questions and approaches things in a creative, holistic way to try to get a better answer".
Chambers Europe 2016

Tax expert
Euromoney Expert Guide 2015

John Ryan is "excellent".
European Legal 500 2015

John Ryan is recommended.
European Legal 500 2015

Clients feel that John "has a great oversight and keen interest; he instils a lot of confidence".
Chambers Global & Europe 2014

New York-based John Ryan is praised by clients for his "knowledgeable, technical, responsive and approachable" style.
Chambers Global 2013

John is also listed as a leading individual by international directories including Chambers Europe and World Tax.


Dublin City University (DPA)
University College Dublin (BA in Agriculture Economics)

Related Practice Areas

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