Transactions and Corporate Finance by EY-Parthenon 

EY-Parthenon works with CEOs and business leaders to shape high-impact M&A strategy and corporate finance decisions. We help organizations evaluate growth opportunities, optimize portfolios, and execute deals with confidence—from strategic diligence and valuation through integration or separation.

Our senior advisors bring investor-grade insight, deep industry experience, and disciplined execution across every stage of the deal lifecycle. Backed by EY’s global network, we help leaders accelerate transformation and deliver measurable value.



Our Solutions
Reimagine your strategy and realize your transformation plans. Select a topic to see more.


Get in touch
Talk to us about how to reimagine your strategy and realize your transformation plans.

Strategic Case Studies



#1 Global M&A Accountant Advisor — EY-Parthenon, H1 2025

Mergermarket’s latest for top M&A transaction advisor by both deal value and volume globally, and across key markets including Australia, France, Germany, Singapore, UK and USA.

M&A

Our latest thinking



EY Ireland Strategy and Transactions update

Explore EY Ireland January 2024 Strategy and Transactions Update to learn more about our most recent successful transactions within the Irish Market. Our diverse teams help clients achieve their strategic objectives and unlock value across a wide range of sectors. Contact us using the form below to learn more.

Low angle view of contemporary corporate skyscrapers with urban architectural design in downtown financial district

The EY-Parthenon Transactions and Corporate Finance team

Our latest thinking

Geostrategic Analysis: June 2026

Read the June 2026 Geostrategic Analysis for our take on geopolitical developments and the impact of these political risks on international business.

Can disciplined ambition unlock growth in a volatile global economy?

Explore CEO 2026 priorities: disciplined growth that ties AI to ROI, embeds geopolitics into strategy and uses M&A to compete amid volatility.

Transact to transform: How a human focus can unlock deal value

Transactions which have a bold vision, prioritize the workforce and set conditions to navigate hurdles are more likely to transform a business. Learn more.

Liz Fealy + 2

How artificial intelligence can unlock a new future for infrastructure

To unlock the value of AI and truly transform the infrastructure sector, it must adopt a new mindset, skillset, toolset. Find out how in EY’s new report.

EY Financial Services Thought Gallery

Discover more information on EY’s Financial Services Strategy and Transactions offerings in Ireland.