Transactions and Corporate Finance by EY-Parthenon

EY-Parthenon works with CEOs, boards, private equity and governments 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 network, we help leaders accelerate transformation and deliver 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

US M&A activity insights: November 2025

Read the latest Merger Monthly, with insights on recent US M&A activity and what M&A trends to expect as we look ahead.

Healthcare sector outlook: growing amid headwinds in 2026 

Healthcare sector leaders can unlock strategic growth in 2026 amidst economic and regulatory challenges. Learn more.

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.

How Bristol Myers Squibb overhauled working capital to fund its future

EY-Parthenon team helped BMS establish a cash leadership office as part of an award-winning Treasury transformation. Learn more in this case study.

Turning risks into advantages: M&A as a growth engine for industrials

Despite an uncertain market, industrial manufacturers that adopt a thoughtful strategy can use M&A to make progress on key agenda items. Read the article.

What drives value in chemicals industry carve-out strategy

Leaders in the US chemicals industry considering a strategic divestment can increase value in three areas. Learn more.

Corporate spin-off, M&A: A conversation with Carrier CEO David Gitlin

Carrier Chairman & CEO David Gitlin speaks with Mitch Berlin, EY Americas Vice Chair, EY-Parthenon on acquisition and financial strategy. Watch the video.

Five actions to enhance shareholder value in M&A deals

Enhance M&A success by aligning corporate strategy with 5 key actions: strategic planning, data-driven capital allocation, AI use, and early communication.

How an M&A clean room strategy can accelerate transactions synergies

Discover how an M&A clean room strategy enhances transaction synergies, ensuring compliance, security, and faster integration.

M&A stress test: Are you prepared for the next big deal?

Prepare for successful M&A with the EY-Parthenon M&A Stress Test. Learn how to maximize deal value and avoid pitfalls.

Boosting carve-out sale value with holistic financial management

Strengthen carve-out sale strategy with early holistic financial planning. Discover essential steps for CFOs to enhance transaction value and deal success.

How a global firm moved swiftly to set up a stand-alone energy business

A global conglomerate with newly acquired oil and gas assets leveraged an accelerated approach to cost, supply chain and technology. Learn more.

Three cash disciplines to create value and resilience

Building the cash discipline and control needed in today’s markets will ensure future resiliency. Find out more.

Three lessons learned from transformative health care M&A

Unlock value in health care M&A by avoiding pitfalls. Discover strategies for successful health care deals and effective transformation.

Earning the right to grow: how capital efficiency drives TSR performance

Companies should assess their ROIC before pursuing growth. Read the article to explore strategies for improving capital efficiency and success.

Beyond integration: Value creation from bolt-on life sciences deals

Discover strategies for successful bolt-on acquisitions in life sciences for 2025. Read the full article for essential insights.

Enterprise software carve-outs: insights for success, distilled

Discover how leading enterprise software companies use carve-out divestitures to innovate, enhance shareholder value, and outperform peers. Learn more.

Beyond the deal: accurately estimating M&A integration costs

Discover key drivers of M&A integration costs and ensure deal success. Learn how to plan strategically for long-term value. Read more.

How to be a savvy technology M&A dealmaker

The EY-Parthenon Technology Corporate Development Survey confirms seven key traits of companies that succeed with mergers and acquisitions (M&A). Read more.

Banking M&A Quick Takes: merger of equals

Banks are considering mergers with similar-sized institutions to create more resilient entities. Learn more about banking M&A trends.

Energy M&A Quick Takes: How companies are transforming deal structures

In the Energy M&A Quick Takes video, EY leaders discuss oil and gas consolidation, and integrations that require more due diligence.

How the drivers of private equity value creation are changing

Discover the five key drivers in private equity value creation in uncertain markets.

Macro Bites: Capital allocation priorities

What are companies’ capital allocation priorities as interest rates are poised to fall? Watch the episode.

Strategies for successful corporate separations

Gain competitive advantage with valuable insights from 160+ corporate separations, including spin offs, carve outs, optimal timing, and value maximization.