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Quick facts
Number of partners

100

Number of other fee earners

600

Other offices

Belfast, London, New York, San Francisco

Languages

English, French, German, Spanish

Key practice areas
Banking and finance
Banking
Project finance
Capital markets
Capital markets : Debt
Capital markets : Equity
Capital markets : Structured finance and securitisation
Financial and corporate
Financial services regulatory
Investment funds
Corporate and M&A
Restructuring and insolvency
M&A
Project development
Asset finance
Firm overview

Arthur Cox LLP is one of Ireland’s leading law firms. We are an “all-island” firm with offices in Dublin and Belfast. We also have offices in London, New York, and San Francisco. Our practice encompasses all aspects of corporate and business law.

With 600 legal staff and a total headcount of nearly 900, we provide a comprehensive service to an international client base ranging from multinational organisations, banks, and financial institutions and established global leaders to government agencies and new players in emerging industry sectors.

Our story has been defined by our progressive outlook. For over 100 years, we have led the way in the legal field in Ireland, and have continuously worked to strive towards our goals. For our clients, we work to deliver the best service and support. With an independent, entrepreneurial spirit of innovation leading the way.

News

Our story has been defined by our progressive outlook. Our news section contains details of new developments and items of interest happening in the firm, and you can read more by clicking here: News - Arthur Cox LLP

Key transactional practices
  • Asset finance
  • Banking
  • Capital markets: Debt
  • Capital markets: Derivatives
  • Capital markets: Equity
  • Capital markets: High yield
  • CLO/CDO
  • Competition
  • Financial restructuring
  • Financial services regulatory
  • Hedge funds
  • Investment funds
  • M&A
  • PPP/PFI
  • Private equity
  • Private equity funds
  • Project development
  • Project finance
  • Real estate finance
  • Real estate funds
  • Restructuring and insolvency
  • Securitisation
  • Structured finance/securitisation
Key practice contacts

Corporate and M&A:
Stephen Ranalow

Commercial:
Louise O’Byrne

International:
John Matson, Geoff Moore

Real Estate:
Simon Hannigan

Litigation, Dispute Resolution and Investigations:
Michael Twomey

Tax:
Ailish Finnerty

Competition and Regulated Markets:
Patrick Horan

Banking:
David Molloy

Investment Funds:
Ian Dillon, Kevin Murphy, Tara O'Reilly

Capital Markets:
Aiden Small

Insolvency and Corporate Recovery:
John Donald

Technology and Innovation:
Colin Rooney

PPP/Projects:
Aaron Boyle

Financial Regulatory
Sarah Thompson

Sector expertise
  • Aviation
  • Banking
  • Construction and materials
  • Energy
  • Financial services
  • Food and beverage
  • Gaming
  • Government and public policy
  • Healthcare
  • Industrials
  • Insurance
  • Investment management
  • Media
  • Natural resources
  • Pharm and life sciences
  • Real estate
  • Social infrastructure
  • Tech and telecoms
  • Transport
  • Utilities
Other offices

Victoria House
Gloucester Street
Belfast
BT1 4LS
Northern Ireland
T: + 44 28 9023 0007
F: + 44 28 9023 3464
belfast@arthurcox.com

12 Gough Square
London
EC4A 3DW
United Kingdom
T: +44 207 832 0200
F: +44 207 832 0201
london@arthurcox.com

Arthur Cox
One Rockefeller Plaza
15th Floor
New York NY 10020
USA
T: +1 212 782 3294
F: +1 212 782 3295
newyork@arthurcox.com

10th Floor
315 Montgomery Street
San Francisco, 94104
USA
T: +1 415 829 4247
F: +1 415 829 4304
E: sanfrancisco@arthurcox.com

Address:
Ten Earlsfort Terrace
Dublin D02 T380
Tel:+353 1 920 1000 Fax:+353 1 920 1020 Email:Contact Us Web Address:http://www.arthurcox.com
2026 Edition
Asset finance
Tier 2
10 firms ranked
View full list

Tier 1

A&L Goodbody
15 practice areas
View full profile
Matheson LLP
15 practice areas
View full profile
McCann FitzGerald LLP
15 practice areas
View full profile

Tier 2

Arthur Cox
15 practice areas
View full profile
Maples Group
16 practice areas
View profile
Mason Hayes & Curran
15 practice areas
View full profile
Walkers
12 practice areas
View full profile
William Fry
15 practice areas
View full profile

Notable

Dillon Eustace
14 practice areas
View full profile
Flynn O'Driscoll
3 practice areas
View full profile
Banking
Tier 1
27 firms ranked
View full list

Tier 1

A&L Goodbody
15 practice areas
View full profile
Arthur Cox
15 practice areas
View full profile
Mason Hayes & Curran
15 practice areas
View full profile
Matheson LLP
15 practice areas
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McCann FitzGerald LLP
15 practice areas
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Tier 2

Maples Group
16 practice areas
View profile
William Fry
15 practice areas
View full profile

Tier 3

Byrne Wallace Shields
8 practice areas
View profile
Dillon Eustace
14 practice areas
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Eversheds Sutherland
5 practice areas
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Walkers
12 practice areas
View full profile

Tier 4

Addleshaw Goddard
7 practice areas
View profile
BHSM LLP incorporating OBH Partners
4 practice areas
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Beauchamps Solicitors
7 practice areas
View profile
Dentons
5 practice areas
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Flynn O'Driscoll
3 practice areas
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Hayes solicitors
4 practice areas
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Ogier
7 practice areas
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Philip Lee
6 practice areas
View profile
Ronan Daly Jermyn
5 practice areas
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Notable

AMOSS Solicitors
3 practice areas
View profile
DLA Piper
3 practice areas
View profile
Gartlan Furey Solicitors
1 practice area
View profile
Holmes O’Malley Sexton
3 practice areas
View profile
Pinsent Masons
7 practice areas
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Simmons & Simmons
3 practice areas
View profile
Taylor Wessing
2 practice areas
View profile
Capital markets : Debt
Tier 1
10 firms ranked
View full list

Tier 1

A&L Goodbody
15 practice areas
View full profile
Arthur Cox
15 practice areas
View full profile
Matheson LLP
15 practice areas
View full profile
McCann FitzGerald LLP
15 practice areas
View full profile

Tier 2

Maples Group
16 practice areas
View profile
Mason Hayes & Curran
15 practice areas
View full profile
Walkers
12 practice areas
View full profile
William Fry
15 practice areas
View full profile

Tier 3

Dillon Eustace
14 practice areas
View full profile

Notable

Ogier
7 practice areas
View full profile
Capital markets : Equity
Tier 1
8 firms ranked
View full list

Tier 1

A&L Goodbody
15 practice areas
View full profile
Arthur Cox
15 practice areas
View full profile
McCann FitzGerald LLP
15 practice areas
View full profile

Tier 2

Mason Hayes & Curran
15 practice areas
View full profile
Matheson LLP
15 practice areas
View full profile
William Fry
15 practice areas
View full profile

Notable

Byrne Wallace Shields
8 practice areas
View profile
Maples Group
16 practice areas
View profile
Capital markets : Structured finance and securitisation
Tier 1
10 firms ranked
View full list

Tier 1

A&L Goodbody
15 practice areas
View full profile
Arthur Cox
15 practice areas
View full profile
Maples Group
16 practice areas
View profile
Matheson LLP
15 practice areas
View full profile
McCann FitzGerald LLP
15 practice areas
View full profile
Walkers
12 practice areas
View full profile

Tier 2

Dillon Eustace
14 practice areas
View full profile
Mason Hayes & Curran
15 practice areas
View full profile
William Fry
15 practice areas
View full profile

Notable

Ogier
7 practice areas
View full profile
Financial services regulatory
Tier 1
12 firms ranked
View full list

Tier 1

A&L Goodbody
15 practice areas
View full profile
Arthur Cox
15 practice areas
View full profile
Matheson LLP
15 practice areas
View full profile
McCann FitzGerald LLP
15 practice areas
View full profile
William Fry
15 practice areas
View full profile

Tier 2

Dillon Eustace
14 practice areas
View full profile
Maples Group
16 practice areas
View profile
Mason Hayes & Curran
15 practice areas
View full profile
Walkers
12 practice areas
View full profile

Tier 3

Hogan Lovells Cadwalader
2 practice areas
View profile

Notable

Addleshaw Goddard
7 practice areas
View profile
Byrne Wallace Shields
8 practice areas
View profile
Investment funds
Tier 1
15 firms ranked
View full list

Tier 1

A&L Goodbody
15 practice areas
View full profile
Arthur Cox
15 practice areas
View full profile
Dillon Eustace
14 practice areas
View full profile
Maples Group
16 practice areas
View profile
Matheson LLP
15 practice areas
View full profile
McCann FitzGerald LLP
15 practice areas
View full profile

Tier 2

Walkers
12 practice areas
View full profile
William Fry
15 practice areas
View full profile

Tier 3

Dechert
2 practice areas
View profile
Mason Hayes & Curran
15 practice areas
View full profile
Simmons & Simmons
3 practice areas
View profile

Notable

Byrne Wallace Shields
8 practice areas
View profile
K&L Gates
1 practice area
View profile
Ogier
7 practice areas
View full profile
Pinsent Masons
7 practice areas
View profile
M&A
Tier 1
25 firms ranked
View full list

Tier 1

A&L Goodbody
15 practice areas
View full profile
Arthur Cox
15 practice areas
View full profile
Matheson LLP
15 practice areas
View full profile
McCann FitzGerald LLP
15 practice areas
View full profile
William Fry
15 practice areas
View full profile

Tier 2

Maples Group
16 practice areas
View profile
Mason Hayes & Curran
15 practice areas
View full profile

Tier 3

Beauchamps Solicitors
7 practice areas
View profile
Byrne Wallace Shields
8 practice areas
View profile
Dentons
5 practice areas
View full profile
Dillon Eustace
14 practice areas
View full profile
Hayes solicitors
4 practice areas
View profile
Walkers
12 practice areas
View full profile

Tier 4

Addleshaw Goddard
7 practice areas
View profile
Eversheds Sutherland
5 practice areas
View profile
Flynn O'Driscoll
3 practice areas
View full profile
Philip Lee
6 practice areas
View profile

Tier 5

BHSM LLP incorporating OBH Partners
4 practice areas
View full profile
Pinsent Masons
7 practice areas
View profile
Ronan Daly Jermyn
5 practice areas
View profile

Notable

DLA Piper
3 practice areas
View profile
Lavelle Partners LLP
4 practice areas
View profile
Ogier
7 practice areas
View full profile
Taylor Wessing
2 practice areas
View profile
Whitney Moore
1 practice area
View profile
Project development
Tier 1
10 firms ranked
View full list

Tier 1

A&L Goodbody
15 practice areas
View full profile
Arthur Cox
15 practice areas
View full profile
Mason Hayes & Curran
15 practice areas
View full profile
Matheson LLP
15 practice areas
View full profile
McCann FitzGerald LLP
15 practice areas
View full profile
William Fry
15 practice areas
View full profile

Tier 2

Beauchamps Solicitors
7 practice areas
View profile
Philip Lee
6 practice areas
View profile

Notable

Dentons
5 practice areas
View full profile
Pinsent Masons
7 practice areas
View profile
Project finance
Tier 1
10 firms ranked
View full list

Tier 1

A&L Goodbody
15 practice areas
View full profile
Arthur Cox
15 practice areas
View full profile
Matheson LLP
15 practice areas
View full profile
McCann FitzGerald LLP
15 practice areas
View full profile
William Fry
15 practice areas
View full profile

Tier 2

Mason Hayes & Curran
15 practice areas
View full profile

Tier 3

Beauchamps Solicitors
7 practice areas
View profile
Eversheds Sutherland
5 practice areas
View profile
Philip Lee
6 practice areas
View profile

Notable

Pinsent Masons
7 practice areas
View profile
Restructuring and insolvency
Tier 1
21 firms ranked
View full list

Tier 1

A&L Goodbody
15 practice areas
View full profile
Arthur Cox
15 practice areas
View full profile
Matheson LLP
15 practice areas
View full profile
McCann FitzGerald LLP
15 practice areas
View full profile
William Fry
15 practice areas
View full profile

Tier 2

Maples Group
16 practice areas
View profile
Mason Hayes & Curran
15 practice areas
View full profile

Tier 3

Beauchamps Solicitors
7 practice areas
View profile
Byrne Wallace Shields
8 practice areas
View profile
Dillon Eustace
14 practice areas
View full profile
Walkers
12 practice areas
View full profile

Tier 4

Addleshaw Goddard
7 practice areas
View profile
BHSM LLP incorporating OBH Partners
4 practice areas
View full profile
Eversheds Sutherland
5 practice areas
View profile
Ronan Daly Jermyn
5 practice areas
View profile

Notable

AMOSS Solicitors
3 practice areas
View profile
Brady Kilroy Solicitors
1 practice area
View profile
Dentons
5 practice areas
View full profile
Hayes solicitors
4 practice areas
View profile
Lavelle Partners LLP
4 practice areas
View profile
Pinsent Masons
7 practice areas
View profile
Linked Reviews
Financial and corporate
Arthur Cox is one of Ireland’s largest and oldest law firms and is presently led by managing partner Geoff Moore. Founded more than 100 years ago in Dublin, where it is still based, the firm now employs 530 legal professionals across its headquarters and offices in Belfast, London,New York and San Francisco.  


Highlights 


Arthur Cox advised Ryanair Holdings on its EURO 1.1 billion unsecured credit facility with a syndicate of 17 lenders, acting as lead Irish counsel from term sheet through until close. This represented a significant landmark financing for one of Europe's largest airlines.


The firm also advised James Hardie on its USD8.75 billion acquisition of AZEK, representing a landmark cross border M&A transaction that included the issuance of new shares by an Irish plc and a NYSE listing.


Testimonials 2026


"Dedication, professional, responsiveness, client focused approach." - Banking and finance

"The team is super-responsive, always. They are practical, efficient, and understand the transaction needs intuitively." - Banking and finance

"Very good team, kept our internal legal department updated and delivered on time." - Capital markets

"Arthur Cox stands out for the combination of deep technical expertise and commercial judgement. In debt capital markets, they are clearly very experienced across the full range of debt structures." - Capital markets

"In depth knowledge of our company and priorities, which is reflected in nuanced and commercially sensible advice. Also always looking around corners to mitigate risks we may not have thought of." - Capital markets

"Provide practical and knowledgeable counsel with attention to detail and service." - Capital markets

"Excellent client service, strong technical knowledge but with commercial and pragmatic approach." - Financial service regulatory

"Attention to detail, timeliness and commercial knowledge." - Financial service regulatory

"Finance team (Aisling Kelly) responsive over email and able to work through issues in a constructive manner. Tax advice also of a high quality." - Investment funds

"Arthur Cox has a very strong partner-level team, supported by very capable associates. The teams knowledge of AIFMD and Irish regulatory issues is top class, and is balanced by a pragmatic and commercial approach to advice." - Investment funds

"Arthur Cox have a broad scope of services and a deep knowledge of the market and areas of expertise." - M&A

"Superb firm with excellent lawyers experienced and very good at what they do!" - Restructuring

"Aidan is the leading specialist in all things fund and securitisation-related in Ireland for Arthur Cox. He is a really excellent professional, always available, very commercial in his advice and a trusted partner for our business." - Aiden Small

"Connor is very knowledgeable and gives practical and useful advice." - Connor Manning

"Attention to detail, problem solving and good communication." - Cormac Commins

"Dara is an expert in AIFMD and Irish regulatory matters; he balances technical legal points with pragmatic commercial advice." - Dara Harrington

"Kylie is an attentive and intelligent lawyer that provides practical and well thought out advice." - Kylie Dollard

"Engages with the commercial realities from the outset, incredible depth of legal knowledge and experience and inspires complete trust as an advisor on any topic." - Maura McLaughlin

"Excellent at understanding the requirements, able to bring a practical and pragmatic approach without over complicating the subject matter." -
Maura McLaughlin


"Phil Cody is excellent at combining deep technical expertise with practical, commercial advice. What stands out most is Phil’s ability to make complex issues clear and actionable. He is very responsive, pragmatic and detail-oriented, but also commercial in his approach. He does not simply identify legal issues; he helps find workable solutions and gives advice that can be used by the business in real time. He is also very strong on execution. He understands market practice, transaction timelines and the need to give clear guidance quickly." - Phil Cody

"Ruth has great knowledge and provides very practical and advice." - Ruth Lillis


Key clients 


Ryanair plc, Dubai Aerospace Enterprise, AviLease, Aviator Capital, Amergin Asset Management, Ireland Limited, Goldman Sachs, Starwood, Bank of Ireland, Brookfield, Ares, Bank of Ireland, AIB, Lone Star, Blackstone, M&G, Energia, Celtic Roads, Power Capital, Valley Healthcare, LDA 

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Deal Highlights
203 results203 results
Deal Name Deal Date Firm Name Jurisdiction Deal Type Lawyer Names Client Names Client Role
Xtrackers ETC; DWS International - Securitisation
2020-03-16
Arthur Cox
Ireland
Securitisation
Glenn Butt
Xtrackers ETC, DWS International
Issuer
Lone Star International Finance DAC; LSF XI GLas II Investments DAC; European Residential Loan Securitisation 2020-NPL1 DAC - Securitisation
2020-11-20
Arthur Cox
Ireland
Securitisation
Aiden Small
Lone Star International Finance DAC, LSF XI GLas II Investments DAC, European Residential Loan Securitisation 2020-NPL1 DAC
Issuer
BNP Paribas; Bank of America - Securitisation
2020-11-10
Arthur Cox
Ireland
Securitisation
Aiden Small, David Kilty, Deirdre Sheehan
BNP Paribas, Bank of America
Underwriter
JP Morgan; UBS - Securitisation
2020-10-01
Arthur Cox
Ireland
Securitisation
Aiden Small
JP Morgan, UBS
Underwriter
Janus Henderson - Fund formation
2021-02-25
Arthur Cox
Ireland
Fund formation
Kevin Murphy
Janus Henderson
Sponsor
MacKay Shields - Fund formation
2020-01-01
Arthur Cox
Ireland
Fund formation
Dara Harrington
MacKay Shields
Fund manager
Rize ETF - Fund formation
2020-01-01
Arthur Cox
Ireland
Fund formation
Tara O’Reilly
Rize ETF
Sponsor
Lazard - Fund formation
2020-08-01
Arthur Cox
Ireland
Fund formation
Dara Harrington
Lazard
Investment manager
Global X; Mirae Asset Global Investments - Fund formation
2021-02-25
Arthur Cox
Ireland
Fund formation
Tara O’Reilly
Global X, Mirae Asset Global Investments
Sponsor
AlbaCore Capital - Fund formation
2020-12-01
Arthur Cox
Ireland
Fund formation
Ian Dillon, Siobhán Mcbean
AlbaCore Capital
Investment manager
HSBC ETFs - Fund formation
2021-01-01
Arthur Cox
Ireland
Fund formation
Sarah Cunniff
HSBC ETFs
Fund manager
CIFC Asset Management - Fund formation
2020-07-01
Arthur Cox
Ireland
Fund formation
Cormac Commins
CIFC Asset Management
Asset manager
First Eagle Investment Management - Fund formation
2020-03-01
Arthur Cox
Ireland
Fund formation
Kevin Murphy
First Eagle Investment Management
Fund manager
Export–Import Bank of Korea; KB Kookmin Bank - Project finance
2020-10-01
Arthur Cox
Ireland
Project finance
Matt Dunn
Export–Import Bank of Korea, KB Kookmin Bank
Lender
Energia Renewables - Project finance
2020-06-01
Arthur Cox
Ireland
Project finance
Matt Dunn
Energia Renewables
Borrower
DZ Bank; European Investment Bank - Project finance
2020-12-01
Arthur Cox
Ireland
Project finance
Matt Dunn
DZ Bank, European Investment Bank
Lender
Legal & General Assurance Society - Project finance
2020-12-01
Arthur Cox
Ireland
Project finance
Matt Dunn
Legal & General Assurance Society
Lender
ESB; Bord na Móna - Project finance
2021-02-25
Arthur Cox
Ireland
Project finance
Alex Mclean
ESB, Bord na Móna
Borrower
Greenlink - Project finance
2021-02-25
Arthur Cox
Ireland
Project finance
Alex Mclean
Greenlink
Borrower
Windgeneration Ireland - Project finance
2021-01-01
Arthur Cox
Ireland
Project finance
Matt Dunn
Windgeneration Ireland
Borrower
5
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11
ESG
With four months until a final decision is made on cutting red tape, Arthur Cox's head of ESG says the firm is not advising clients to put their pens down
IFLR spoke to Arthur Cox chief people officer Triona Ferriter about the firm's culture and the shift to hybrid working in the post-pandemic era
The IFLR team is pleased to announce all the winning deals, teams, firms and individuals and the launch of our first ever podcast
The shortlist for the ninth annual Euromoney Legal Media Group Europe Women in Business Law Awards has been announced. For the 2019 nominees, please see below.
All the winning deals, teams, individuals and firms were revealed at IFLR’s ceremony in London on April 4
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