David Mangan


David is a partner in our Corporate team, practising in the areas of equity capital markets and securities law.

Between 2016 and 2019, David headed the New York office of Mason Hayes & Curran.

David is also a member of our Capital Markets team and advises listed and unlisted corporate clients and financial advisers on public company transactions, debt and equity offerings, share buybacks, reorganisations and corporate finance.


  • Capital markets
  • Mergers and acquisitions
  • Corporate governance
  • Private equity

Representative Matters

  • Advising Goldman Sachs International in connection with the €718m offer by way of recommended scheme of arrangement by Causeway Consortium Limited for Applegreen plc.
  • Advising Nomura International plc in connection with the €318m offer by way of recommended scheme of arrangement by Outsourcing Inc. for CPL Resources plc.

  • Advised SCISYS on its inversion under an Irish holding company and admission to AIM and Euronext Dublin and on the recommended offer by way of scheme of arrangement by CGI, Inc.   


Legal 500, 2021

David is a ‘Recommended Lawyer’.

Legal 500, 2019

Clients praise David for being “responsive and helpful”.

Speaking Engagements & Teaching

David lectures regularly on topics in company law and securities law to a wide variety of audiences.

  • LinkedIn

Areas of Expertise

Equity Capital Markets Company Law Corporate Governance & Compliance Corporate Law Mergers & Acquisitions

Professional Memberships

The Law Society of Ireland

The Law Society of England and Wales


Trinity College Dublin, BA, Business Economics and Social Studies

Columbia University, MA, Political Science