Mason Hayes & Curran
Mason Hayes & Curran is an Irish business law firm with 670 staff across Dublin, London, New York, and San Francisco, providing specialist corporate, transactional, and financial services legal advice to enterprise clients, with deep regulatory expertise in financial services and energy/data-centre sectors.
- Company typePrivate
- Founded1970
- HeadquartersDublin, Ireland
- Headcount251–500
- GTM typeB2B
- OfferingServices
What Mason Hayes & Curran does
Mason Hayes & Curran is an Irish business law firm headquartered in Dublin, founded in 1970, providing specialist legal services across transactional, corporate, and financial services areas. The firm employs 670 people across offices in Dublin, London, New York, and San Francisco, serving enterprise clients with Irish business interests — primarily financial services firms requiring regulatory compliance and energy/data-centre operators navigating policy uncertainty. Managing partner Will Carmody leads the firm, with specialist partners such as Keith Newman anchoring the energy regulation practice.
The firm's core offerings are professional legal services rather than technology products — it has no disclosed software platform, API, or application, and operates on a quote-based fee structure tailored to client and matter complexity. MHC differentiates through deep sector expertise and proprietary thought leadership, including annual surveys of 330+ financial services professionals and an annual Dublin energy conference attracting 250+ policymakers and industry leaders. This research positions the firm as an authority on regulatory developments such as the Central Bank's revised Consumer Protection Code (effective March 2026) and data-centre regulatory policy.
MHC's revenue model is professional services fees, with FY2025 turnover of €131.5 million, representing 8% year-over-year growth and approximately one-third cumulative growth since 2021. The go-to-market motion is sales-led and partner-driven, relying on direct client relationships rather than channel or self-serve distribution. The firm is privately held with no disclosed parent company, external investment, or institutional ownership structure, consistent with traditional Irish partnership-based law firm models. Forward management guidance points to 7-8% revenue growth in 2026, supported by planned trainee intake expansion and selection of a new Dublin headquarters.
Mason Hayes & Curran firmographics
Firmographics- Name
- Mason Hayes & Curran
- Legal name
- Mason Hayes & Curran
- Website
- https://mhc.ie
- Company type
- Private
- Founded year
- 1970
- Operating status
- Operating
- Headcount range
- 251–500 employees
- Short description
- Mason Hayes & Curran is an Irish business law firm with 670 staff across Dublin, London, New York, and San Francisco, providing specialist corporate, transactional, and financial services legal advice to enterprise clients, with deep regulatory expertise in financial services and energy/data-centre sectors.
- Ownership category
- akta.pro rank
Mason Hayes & Curran industry classification
Industry- Product category
- Business Legal Services
- NAICS
- Offices of Lawyers (541110), Legal Services (5411), Offices of Lawyers (54111)
- SIC
- Services-Legal Services (8111)
- akta.pro primary industry
- Mergers & Acquisitions (M&A) & Securities Law (BPAHAAAI)
- akta.pro secondary industries
- M&A Advisory (Buy-side/Sell-side) (BPAHADAC), Accounting & Bookkeeping Services (BPAHABAC)
Keywords
Where Mason Hayes & Curran is headquartered
LocationHeadquarters
- HQ city
- Dublin
- HQ country
- Ireland
- HQ region
- Europe
Offices4 records
Markets served
Mason Hayes & Curran business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Marketing or Sales, Technology or R&D
Revenue model
- Legal Services Fees: Professional legal services revenue from specialist advisory work across transactional, corporate, and financial services areas. Revenue increased by 8% to €131.5 million with approximately one-third growth since 2021.
Go-to-market motion1 record
Distribution channels1 record
Marketing channels3 records
Mason Hayes & Curran product offering
Product offeringCore offering
Mason Hayes & Curran is an Irish business law firm providing specialist legal advice across transactional, corporate, and financial services areas. The firm operates from offices in Dublin, London, New York, and San Francisco with 670 professionals, advising domestic and international clients on regulatory compliance, M&A, and sector-specific matters including financial services and energy.
Product overview
Mason Hayes & Curran is an Irish business-law firm providing specialist legal services across transactional, corporate, and financial services areas. The firm serves clients from offices in Dublin, London, New York, and San Francisco with a team of 670 people. As a professional services firm, it does not offer software products or technology platforms.
Differentiator
Problem solved
Functional benefit
Products and services
- Corporate and Transactional Legal Advisory Specialist legal advice across transactional and corporate areas, including M&A and ongoing corporate advisory, delivered from offices in Dublin, London, New York, and San Francisco to enterprise and corporate clients with Irish and international interests.
- Financial Services Regulatory and Compliance Advisory Regulatory and compliance advisory for Irish financial services firms preparing for the Central Bank's revised Consumer Protection Code (effective March 2026), covering digital compliance requirements and consumer protection obligations under the new framework.
- Energy and Data Centre Regulatory Advisory Legal and policy advisory for energy companies and data-centre developers operating in or considering locating in Ireland, addressing regulatory and policy uncertainty, infrastructure capacity, and consumer energy pricing implications. Backed by MHC's annual energy conference convening 250+ policymakers and business leaders.
Quantifiable outcome
- Revenue growth of approximately one-third since 2021
- +1 more outcomes
Companies that use Mason Hayes & Curran
Customer profileSegments2 records
Ideal customer profiles3 records
Mason Hayes & Curran technology and API
TechnologyTechnology focussed No
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Mason Hayes & Curran partnerships and signals
Strategic signalScale indicators4 records
Recent moves6 records
Expansion highlights5 records
Mason Hayes & Curran competitors and assessment
Company assessmentDirect peers
- Arthur Cox: One of Ireland's largest and most established full-service business law firms, headquartered in Dublin with international offices. Directly comparable to MHC in serving Irish corporates, financial institutions, and energy/data centre clients with similar practice mix.
- A&L Goodbody: Top-tier Irish business law firm with deep practices in financial services, corporate, and energy sectors. Direct competitor to MHC for Irish transactional, regulatory, and financial services mandates, with similar Dublin-led platform.
- Matheson: Leading Irish law firm with strong focus on financial services, corporate, and tax. Direct peer competing for the same institutional clients in Dublin, with comparable transatlantic capability and technology-sector expertise.
- William Fry: Major Irish corporate law firm with significant financial services, technology, and energy practices. Direct competitor to MHC across core Dublin-based mandates, with comparable headcount and practice breadth.
- McCann FitzGerald: Established Irish full-service business law firm headquartered in Dublin. Direct peer to MHC with overlapping client base in financial services, corporate, and energy sectors, serving many of the same Irish institutional clients.
- Maples Group: International law firm with significant Irish (Dublin) operations serving financial services, corporate, and funds clients. Direct competitor to MHC for cross-border mandates involving Irish entities, particularly in financial services.
Broad incumbents
- Eversheds Sutherland: Global full-service law firm with established Irish practice. Competes with MHC on multi-jurisdictional corporate and financial services mandates, offering broader geographic reach but less specialization in Irish energy and data centre regulation.
- Dentons: World's largest global law firm with a Dublin office. Competes for cross-border corporate and energy mandates involving Ireland, leveraging global scale that MHC's transatlantic offices cannot fully match.
- Allen & Overy (now A&O Shearman): Magic Circle / global elite law firm with significant Dublin presence serving financial institutions and corporates. Competes with MHC for high-end Irish and cross-border financial services and corporate mandates.
- Clifford Chance: Global Magic Circle law firm with Dublin office serving financial institutions, energy, and infrastructure clients. Competes with MHC for premium Irish and cross-border mandates, particularly in banking, capital markets, and energy.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat3 records
Key risks5 records
Key highlights7 records
Customer concentration
Mason Hayes & Curran social profiles
Digital presenceMason Hayes & Curran financial estimates
Financial estimateRevenue estimate
Valuation estimate
Mason Hayes & Curran leadership team
Management profileNumber of profiles
Profiles2 records
Mason Hayes & Curran funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Mason Hayes & Curran M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Mason Hayes & Curran
What does Mason Hayes & Curran do?
Mason Hayes & Curran is an Irish business law firm providing specialist legal advice across transactional, corporate, and financial services areas. The firm operates from offices in Dublin, London, New York, and San Francisco with 670 professionals, advising domestic and international clients on regulatory compliance, M&A, and sector-specific matters including financial services and energy.
Is Mason Hayes & Curran a public or private company?
Mason Hayes & Curran is a private company. It is classified as management employee owned and is currently operating.
When was Mason Hayes & Curran founded?
Mason Hayes & Curran was founded in 1970. It employs 251 to 500 people.
Where is Mason Hayes & Curran based?
Mason Hayes & Curran is headquartered in Dublin, Ireland, in the Europe region.
How does Mason Hayes & Curran make money?
One revenue line is on record: legal Services Fees.
Who are Mason Hayes & Curran's main competitors?
Direct peers on record are Arthur Cox, A&L Goodbody, Matheson, William Fry, McCann FitzGerald and Maples Group. Broad incumbents are Eversheds Sutherland, Dentons, Allen & Overy (now A&O Shearman) and Clifford Chance.
Does Mason Hayes & Curran have an API?
No public API is recorded for Mason Hayes & Curran.
What industry is Mason Hayes & Curran in?
Mason Hayes & Curran's product category is Business Legal Services. Its primary akta.pro industry code is BPAHAAAI, Mergers & Acquisitions (M&A) & Securities Law, with a secondary code of BPAHADAC, M&A Advisory (Buy-side/Sell-side). Its NAICS code is 541110 and its SIC code is 8111.