Strategy Consulting by EY-Parthenon

EY-Parthenon is a global strategy consulting firm that works with CEOs, boards, private equity investors and governments to help drive organic and inorganic growth, strategic transformation and value creation. 

Strategy Consulting Solutions

We tailor every engagement to our clients’ unique situation and bring extensive outside-in business and sector experience supported by leading AI-powered technologies to give you the confidence that any strategy we recommend will work in the real world. Our strategy consulting solutions, span the full enterprise and investment lifecycle. Click on a solution to learn more.

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Learn how EY-Parthenon drives transformation and delivers business impact.

EY-Parthenon recognized by Forbes as one of the World’s Best Management Consulting Firms 2025

The prestigious ranking of best consultancies worldwide is based on peer and client surveys across 13 industries and 15 functional areas.

2025 World’s Best Management Consulting Firms, powered by Statista

Why EY-Parthenon for Strategy Consulting

EY-Parthenon teams bring a distinctive approach to strategy consulting that combines rigorous strategic thinking with the discipline of an investor and the ability to execute at scale. We operate at the intersection of strategy, M&A, capital allocation and transformation, helping leadership teams make bold choices, reallocate resources with confidence and translate strategy into action.

What differentiates our Strategy Consulting approach:

Our combination of strategy and execution helps enable us to provide real-world value to our clients. Benefiting from EY broad spectrum of services, we’ve reimagined strategic consulting to work in a world of increasing complexity.

The EY-Parthenon team

Manabu Shinohara

EY-Parthenon Japan Strategy and Transformation Leader, Strategy and Execution Leader; Partner, EY Strategy and Consulting Co., Ltd.
A leader in strategy advisory services that cover everything from value-increasing strategies to the use of external resources (M&A, etc.).
Tokyo, Japan

Yoshimasa Sakata

EY-Parthenon Japan Markets Leader; Strategy and Execution Deputy Leader, EY Strategy and Consulting Co., Ltd.
Deep consulting experience in the Shosha sector. Cross-border and domestic transaction strategy and operations focusing primarily on integration, carve-outs, and organizational transformation.
Tokyo, Japan

John van Rossen

EY-Parthenon Global Strategy and Execution Leader
Driven by purpose and motivated to always help colleagues and clients find a better way of doing things. Fascinated by military history. Podcast addict. Curious nerd.
London, United Kingdom

Behnaz Saboonchi

EY-Parthenon Partner, Strategy and Transactions, Ernst & Young LLP
Corporate strategist. AI and digital supply chain executive. Advisory board member. Public speaker. BIPOC professional women mentor. Mother.
Montréal, Canada

Lukas Hoebarth

EY-Parthenon Americas Strategy & Execution Leader
Trusted C-suite advisor with more than 20 years of global business experience focusing on shareholder value creation through large scale transactions and transformations.
Los Angeles, CA, United States

Igor Mikhalev

EY-Parthenon Partner, Strategy and Transactions, EY-Parthenon Adviseurs B.V.; EY-Parthenon Europe West Head of Emerging Technologies Strategy; EY-Parthenon Netherlands AI Strategy Lead
Deep strategy. Deep tech. Creative and visionary. Hands-on yet big-picture thinker.
Amsterdam, Netherlands

Mark Reich

EY-Parthenon Global Strategy and Transactions Chief Data Officer
Technology, data, value creation expert in M&A. Connecting investors, corporates and disruptors. DJ and ice hockey player.
Amsterdam, Netherlands

Jeff Vogel

EY-Parthenon Americas Software Strategy Group Leader
Advisor to top PE firms and software companies. Provides guidance for driving value across product, technology and R&D strategy. Navigates the software economy.
Boston, MA, United States

Marco Duso

EY-Parthenon Global Sustainability Leader; Partner, Strategy and Transactions, EY Advisory S.p.A.
Driven to achieve net zero. Entrepreneur and business founder. Passionate about mentoring and inspiring others. Married with one daughter. Loves traveling, sports and cooking.
Milano, Italy

Oliver Jones

EY Global Leader, Client Insights and Research; EY-Parthenon Geostrategy Leader
Passionate about providing outstanding support to governments and businesses in a fast changing world. Deeply committed to excellence in public policy. Team builder. Mentor. Flexible worker. Husband and father of three.
London, United Kingdom

Marc Forstemann

EY-Parthenon EMEIA Strategy and Transactions Deputy Leader
Trusted advisor for executives facing major challenges and change. Inspiring leader and people personality. Can-do attitude. Desert driving fan. Petrol head. Loving husband and father of three.
Munich, Germany

Falco Weidemeyer

EY-Parthenon Global Strategic Transformation Leader and Global Turnaround & Restructuring Leader
Seasoned, internationally trained performance professional. CRO and turnaround manager. Experienced in consulting and industry functions. Passionate for outdoors.
Eschborn/Frankfurt (Main), Germany

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