Peter O'Brien



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Peter O'Brien "is able to see commercial angles in the transaction and see things from the banks' perspective".

Chambers Global & Europe


Peter O'Brien is a partner in the Finance and Capital Markets Department at Matheson. His main focus is on banking and structured finance transactions with a special emphasis on project finance. Peter acts for a range of international and domestic financial institutions from our Dublin office and has twenty years' experience in advising on all aspects of banking and finance related transactions. Prior to joining Matheson in 2004,  Peter worked  for several years with leading international law firm, Clifford Chance LLP in its London, Dubai and Hong Kong offices.

Peter is a regular speaker and attendee at finance conferences and has published numerous articles on banking and finance related issues.

Experience Highlights

Peter has advised:

  • syndicates of lenders in relation to syndicated credit facilities to a number of Irish corporates (both secured and unsecured)
  • lenders and borrowers in relation to the restructuring of a variety of debt financings
  • banks and corporates on all aspects of acquisition financing
  • an international bank on its exit and wind-down of its operations in the Irish market
  • a number of Irish banks in relation to the financing of complex commercial property transactions
  • in relation to a private placement of debt securities by a major Irish semi-state body
  • a consortium of lenders in relation to various accommodation projects
  • a European bank in relation to the financing of a number of Irish wind farms
  • a borrower on all financing aspects of the re-development of Greystones Harbour (value circa €300 million)
  • lenders and borrowers in relation to the financing of a variety of PPP transactions and other projects

Peter O’Brien is named ‘Highly Regarded’
IFLR1000 2020

Peter O'Brien is recommended.
European Legal 500 2019

According to clients, Peter O'Brien is "a calm person who does very well at taking the big picture and breaking it down in terms of what the legal requirements are and identifying the legal risks. Clear and well considered, he is a very pleasant man to deal with."
Banking and Finance: Chambers Global 2019

Peter O’Brien is "an incredibly friendly, engaging guy. He has a down-to-earth and practical approach – he's always looking for the solution."
Chambers Global & Europe 2018

Peter O'Brien is named a Highly Regarded Individual.
IFLR1000 2018

Peter O'Brien is recommended.
European Legal 500 2016

Peter O'Brien has "client service at the heart of his approach."
European Legal 500 2017

Clients say Peter O'Brien is "approachable, commercial, down-to-earth, with a positive can-do attitude", and add "everyone likes him and wants to make transactions work".
Chambers Global & Europe 2017

Peter O'Brien is named a Leading Lawyer.
IFLR1000 2017

Peter O'Brien is characterised as "calm, intelligent and highly practical" by impressed clients. "In times of stress talking to Peter helps me tremendously, as he always finds a solution that is acceptable to both sides."
Chambers Global 2016

Peter O’Brien is named a Leading Lawyer.
IFLR1000 2016

Energy and Natural Resources expert
Euromoney Expert Guide 2015

Peter O’Brien is recommended in Banking and Finance, Energy and Natural Resources, and Projects and PPP.
European Legal 500 2015

Peter O'Brien "is able to see commercial angles in the transaction and see things from the banks' perspective".
Chambers Global & Europe 2015

Project Finance expert
Who’s Who Legal 100 2014

Peter O’Brien "simplifies even the most complex transactions". He has a "very natural problem-solving approach to negotiations".
European Legal 500 2014

Peter O’Brien is also recommended by European Legal 500 and Who's Who of Project Finance Lawyers.

"Another big-ticket deal saw O'Brien advise borrower Saorgus Energy in respect of the re-financing of the 15.2MW Tursillagh wind farm."
IFLR1000 2013

Peter O'Brien is regarded by clients as a valuable adviser. He was part of the team that advised the Bank of Ireland on the restructuring of the Schools Bundle Two PPP transaction.
Chambers Europe 2013

Peter O'Brien is valued by clients for his ability to "think clearly and put legal language into layman's terms".
Chambers Europe 2013


Qualified as a solicitor in England and Wales (non-practising)
College of Law (Diploma in Legal Practice)
University of Oxford, Pembroke College (BCL)
University College, Cork (BCL, first class honours, LLM)

Related Practice Areas

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