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.



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#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


The EY-Parthenon Transactions and Corporate Finance team

Our latest thinking

Geostrategic Analysis: November 2025 edition

Read the November 2025 Geostrategic Analysis for our take on geopolitical developments and the impact of these political risks on international business.

Does today’s disruption provide the blueprint for tomorrow’s growth?

EY-Parthenon CEO Survey September 2025 reveals how leaders build confidence, resilience, and growth strategies amid disruption and transformation.

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.