John Barrett

John Barrett | Corporate Lawyer | Mergers & Acquisitions | Arthur Cox


John specialises in corporate and commercial law issues for public and private companies. John has advised on some of the largest corporate transactions in recent years, including reorganisations, joint ventures, mergers, acquisitions, cross-border transactions, demergers, public takeovers, corporate migrations and IPOs. He has particular expertise in corporate transactions in the pharmaceuticals, energy and aviation sectors, as well as corporate inversions, redomiciliations and migrations into and out of Ireland. John also provides ongoing corporate law advice to a number of NYSE listed Irish plcs.



  • Zoetis Inc. on its $85 million acquisition of Nexvet Biopharma plc
  • Allergan plc on its $10 billion accelerated share repurchase
  • James Hardie Industries plc on its accelerated share repurchase
  • Allergan plc on its proposed €150 billion merger with Pfizer Inc.
  • Mylan N.V. on its $27 billion offer for Perrigo Company plc
  • Allergan plc on its $40 billion disposal of its generics business to Teva Pharmaceuticals
  • Covidien plc on its $43 billion takeover by Medtronic plc
  • Air France on the sale of Cityjet to Intro Aviation
  • Hypo Real Estate on its sale of Depfa Bank plc
  • Covidien plc on the $2.4 billion demerger and listing on the NYSE of Mallinckrodt plc
  • Ingersoll-Rand plc on the demerger of its commercial and residential security businesses to Allegion plc
  • Mallinckrodt plc on its $2.5 billion capital reduction
  • Covanta on its joint venture with DONG Energy Generation A/S in relation to the Dublin Waste to Energy Project
  • Paddy Power plc on its acquisition of the remaining 39.2% minority shareholding of Sportsbet Pty Limited
  • James Hardie Industries N.V. on its transformation to a Societas Europaea, subsequent transfer of its registered office from the Netherlands to Ireland, and subsequent conversion to a public limited company
  • CRH plc on the sale of its Premier Periclase business to RHI AG
  • Allied Irish Banks on the disposal of its international financial services business
  • Lloyds Banking Group on all aspects of a cross border merger between Bank of Scotland (Ireland) Limited and Bank of Scotland plc, whereby Bank of Scotland (Ireland) Limited exited the Irish market
  • Greencore Group plc in the sale of its malting business to Axereal Union de Cooperatives Agricoles