
Described as ‘knowledgeable, personable and professional’, Mason Hayes & Curran LLP showcases strong expertise across M&A work, private equity matters, public company transactions, reorganisations and partnership structures. Practice head Martin Kelleher has deep expertise in high-profile and complex M&A transactions in Ireland and internationally, while Wendy Hederman is skilled in the digital advisory space, frequently advising global tech companies and start-ups on contractual issues and compliance with EU laws. Adept in healthcare related mandates is Robert Dickson, who is well-equipped to cover the full range of corporate mandates. While David O’Donnell is a key port of call for corporates and entrepreneurs, Conall Geraghty leads the start-up and fast growth companies team.
Legal 500 Editorial commentary
Testimonials
Collated independently by Legal 500 research team.
- ‘The Team is very knowledgeable, personable and professional.’
- ‘‘What impressed me most was their ability to keep control of a complex, multi-jurisdictional process while remaining pragmatic and approachable. They managed the deal with great efficiency, coordinated smoothly with local counsel, and provided clear, commercially focused guidance throughout.’
- ‘David O’Donnell stands out for calm, decisive leadership in complex, multi-jurisdictional deals. On our seller-side build-up, he combined rigorous technical judgment with crisp, commercially focused advice, keeping timelines and negotiations on track.’
- ‘William Dillon Leetch is excellent. He listens and is always available for a quick chat on an issue that might arise, even outside a specific project. Ron Boucher is a formidable partner to have in your corner in a deal, a fundraise or during a crisis.’
- ‘Anne Harkin is a pleasure to work with. She has excellent technical ability while also being client focused, commercial and practical. She is responsive and proactive and is a trusted adviser.’
- ‘Conall Geraghty together with his corporate team of Angela Freeman and Sara Twomey provided excellent advice and support throughout the transaction, always responsive and understanding of the requirements of the transaction.’
- ‘Three stand-out partners that have supported us, namely; Catherine Kelly, Eimear Lyons and Declan Black. Clearly its a culture within the partnership as all three delivered quality support and counsel irrespective of the timing of the ask! Key qualities include clarity of communication and tone, the clarity of legal thought and commercial balance, and a risk managed approach to the question in hand.’
- ‘The team is distinguished by its deep understanding of complex commercial and corporate matters, coupled with a strategic approach to mergers and acquisitions. Their ability to navigate intricate legal landscapes and provide tailored solutions is unparalleled. Clients can expect a proactive and responsive service, characterised by clear communication and a commitment to achieving their business objectives.’
Key clients
- WaterWipes
- VentureWave
- Descartes Systems Group Inc.
- MML Capital
- BDO Development Fund
- Bord Gáis Energy
- Commerz Real Fund Management S.à r.l.
- Paulus Holdings Limited (t/a LetsGetChecked)
- Enterprise Ireland
- Invesco Asset Management
- Scholastic Inc
Work highlights
Advised Edward McCloskey for over a decade on his two businesses, Boyne Valley Group and WaterWipes.
Advised Development Capital Fund on its strategic acquisition of a 26.9% stake in Buttimer Engineering.
Acted for Commerz Real Fund Management S.à r.l. on its entry into the renewable energy market in Ireland.
Lawyers
Hall of Fame
The lawyers at the very top of the profession, widely known and respected by peers and clients for their longstanding involvement in market-leading work.

Leading partners
The strongest partners in their field, leading on market-leading deals and endorsed by peers and clients alike.
Conall Geraghty
Practice head
Martin Kelleher; Philip Nolan
Other key lawyers
Wendy Hederman; Robert Dickson; David O’Donnell; William Dillon Leetch; Ron Boucher; Anne Harkin; Conall Geraghty; Angela Freeman; Sara Twomey; Catherine Kelly; Eimear Lyons; Declan Black; Cara Cooke
